diff --git a/.gitlab-ci.py b/.gitlab-ci.py
deleted file mode 100644
index 6c6a6f51114e29dfe8ccdd759fe764b7a246a73d..0000000000000000000000000000000000000000
--- a/.gitlab-ci.py
+++ /dev/null
@@ -1,207 +0,0 @@
-#!/usr/bin/env python
-
-# -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-# -------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# -------------------------------------------------------------------------------
-
-import os
-import sys
-import subprocess
-
-valid_stages = ['conan', 'cmake', 'build', 'test', 'deliver']
-valid_os = ['Windows', 'Linux', 'macOS']
-valid_compilers = {
-    'Windows': ['Visual Studio'],
-    'Linux': ['gcc'],
-    'macOS': ['apple-clang', 'gcc']
-}
-valid_channels = ['develop', 'stable']
-
-visual_studio_version_year_map = {
-    '15': '2017'
-}
-
-
-def execute(command, arguments):
-    call_arguments = [command]
-    call_arguments.extend(arguments)
-    print('\033[92m$ ' + command + ' ' + ' '.join(arguments) + '\033[0m')
-    sys.stdout.flush()
-    return_value = subprocess.call(call_arguments)
-    if return_value != 0:
-        sys.exit(return_value)
-
-
-def get_conan_flags(compiler, compiler_version):
-    conan_flags = []
-
-    conan_flags.extend(['-s', 'compiler=%s' % compiler])
-    conan_flags.extend(['-s', 'compiler.version=%s' % compiler_version])
-    conan_flags.extend(['-s', 'arch=x86_64'])
-    conan_flags.extend(['-s', 'build_type=Release'])
-
-    if compiler == 'Visual Studio':
-        conan_flags.extend(['-s', 'compiler.runtime=MT'])
-    elif compiler == 'gcc':
-        conan_flags.extend(['-s', 'compiler.libcxx=libstdc++11'])
-    elif compiler == 'apple-clang':
-        conan_flags.extend(['-s', 'compiler.libcxx=libc++'])
-
-    return conan_flags
-
-
-def main(argv):
-    if len(argv) != 5:
-        print('usage: .gitlab-ci.py stage os compiler compiler_version')
-        sys.exit(-1)
-
-    stage = argv[1]
-    operating_system = argv[2]
-    compiler = argv[3]
-    compiler_version = argv[4]
-
-    if not stage in valid_stages:
-        print('Invalid stage, possible values: %s' % ', '.join(valid_stages))
-        sys.exit(-1)
-
-    if not operating_system in valid_os:
-        print('Invalid operating system, possible values: %s' %
-              ', '.join(valid_os))
-        sys.exit(-1)
-
-    if not compiler in valid_compilers[operating_system]:
-        print('Invalid compiler for %s, possible values: %s' %
-              (operating_system, ', '.join(valid_compilers[operating_system])))
-        sys.exit(-1)
-
-    if operating_system == 'Windows':
-        path_list = os.environ['PATH'].split(';')
-        path_list.insert(0, 'C:\\Python27_64\\')
-        path_list.insert(1, 'C:\\Python27_64\\Scripts')
-        os.environ['PATH'] = ';'.join(path_list)
-    elif operating_system == 'Linux':
-        os.environ['CC'] = 'gcc'
-        os.environ['CXX'] = 'g++'
-    elif operating_system == 'macOS' and compiler == 'gcc':
-        if compiler_version == '5':
-            os.environ['CC'] = 'gcc-5'
-            os.environ['CXX'] = 'g++-5'
-        elif compiler_version == '6':
-            os.environ['CC'] = 'gcc-6'
-            os.environ['CXX'] = 'g++-6'
-        elif compiler_version == '7':
-            os.environ['CC'] = 'gcc-7'
-            os.environ['CXX'] = 'g++-7'
-
-    if stage == 'conan':
-        execute('mkdir', ['build'])
-        os.chdir('build')
-
-        execute('conan',
-                ['remote', 'update', 'rwth-vr--bintray',
-                 'https://api.bintray.com/conan/rwth-vr/conan'])
-        execute('conan', ['user', '-p', os.environ['CONAN_PASSWORD'],
-                          '-r', 'rwth-vr--bintray', os.environ['CONAN_LOGIN_USERNAME']])
-
-        conan_install_flags = ['install', '--build=missing']
-        conan_install_flags.extend(get_conan_flags(compiler, compiler_version))
-        conan_install_flags.append('..')
-        execute('conan', conan_install_flags)
-
-    elif stage == 'cmake':
-        os.chdir('build')
-
-        cmake_flags = ['..']
-
-        execute('pip', ['install', '--user', 'pytest'])
-
-        if operating_system == 'Windows':
-            pytest_dir = subprocess.Popen('pip show pytest', stdout=subprocess.PIPE).communicate()[
-                0].splitlines()[7].replace('Location: ', '')
-        elif operating_system == 'macOS':
-            pytest_dir = (
-                '/Users/gitlabci/Library/Python/2.7/lib/python/site-packages')
-        else:
-            pytest_dir = subprocess.Popen(
-                'which pytest', stdout=subprocess.PIPE, shell=True).communicate()[0][:-1]
-
-        os.environ['PY_TEST_DIR'] = pytest_dir
-
-        if compiler == 'Visual Studio':
-            cmake_flags.extend(['-G', 'Visual Studio %s %s Win64' %
-                                (compiler_version, visual_studio_version_year_map[compiler_version])])
-        else:
-            cmake_flags.append('-DCMAKE_BUILD_TYPE=Release')
-
-        execute('cmake', cmake_flags)
-
-    elif stage == 'build':
-        os.chdir('build')
-
-        cmake_build_flags = ['--build', '.']
-        if compiler == 'Visual Studio':
-            cmake_build_flags.extend(['--config', 'Release'])
-
-        execute('cmake', cmake_build_flags)
-
-    elif stage == 'test':
-        os.chdir('build')
-        if operating_system == 'macOS':
-            os.environ['CTEST_OUTPUT_ON_FAILURE'] = '1'
-        execute('ctest', ['-C', 'Release'])
-
-    elif stage == 'deliver':
-        channel = os.environ['channel']
-        version = os.environ['version']
-        if channel not in valid_channels:
-            print('Invalid channel: %s possible values: %s' %
-                  (channel, ', '.join(valid_channels)))
-            sys.exit(-1)
-        conan_flags = get_conan_flags(compiler, compiler_version)
-
-        conan_export_flags = ['export-pkg', '.',
-                              'nesci/%s@RWTH-VR/%s' % (version, channel), '-f']
-        conan_export_flags.extend(conan_flags)
-        execute('conan', conan_export_flags)
-
-        if operating_system == 'Linux':
-            if compiler_version[:1] == '5':
-                conan_test_flags = ['test', './test_package', 'nesci/%s@RWTH-VR/%s' % (version, channel), 
-                                    '-e', 'CXX=/opt/rh/devtoolset-4/root/usr/bin/c++',
-                                    '-e', 'CC=/opt/rh/devtoolset-4/root/usr/bin/cc']
-            elif compiler_version[:1] == '6':
-                conan_test_flags = ['test', './test_package', 'nesci/%s@RWTH-VR/%s' % (version, channel), 
-                                    '-e', 'CXX=/opt/rh/devtoolset-6/root/usr/bin/c++',
-                                    '-e', 'CC=/opt/rh/devtoolset-6/root/usr/bin/cc']
-        
-        else:
-            conan_test_flags = ['test', './test_package', 'nesci/%s@RWTH-VR/%s' % (version, channel)]
-          
-                                    
-        conan_test_flags.extend(conan_flags)
-        execute('conan', conan_test_flags)
-
-        conan_upload_flags = ['upload', 'nesci/%s@RWTH-VR/%s' % (version, channel),
-                              '--all', '--force', '-r=rwth-vr--bintray']
-        execute('conan', conan_upload_flags)
-
-
-if (__name__ == '__main__'):
-    main(sys.argv)
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d663629b7bec063e21e0c028d530faac7bcce95f..ae662b2b1cadbbec0237fbc7fef90e0078c8d7fe 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -20,250 +20,199 @@
 # -------------------------------------------------------------------------------
 
 variables:
-  version: "18.07"
-  channel: "stable"
+  GIT_SUBMODULE_STRATEGY: recursive
 
 stages:
-  - conan
-  - cmake
-  - build
-  - test
-  - deliver
+  - full_pipeline
+
+.full_pipeline_branches_anchor: &full_pipeline_branches
+  - master
+  - stable
 
 .artifacts_template: &artifacts_definition
   artifacts:
     paths:
       - build
+    when: always
     expire_in: 1 week
-
-.delivery_branches_template: 
-  only: &delivery_branches
-    - master
-    - stable
   
 #-------------------------------------------------------------------------------
 #  Windows
 #-------------------------------------------------------------------------------
 
-conan:windows:msvc++14.1:
-  stage: conan
-  tags:
-    - msvc++14.1
-    - opengl
-  script:
-    - python .gitlab-ci.py conan Windows "Visual Studio" 15
-  <<: *artifacts_definition
-    
-cmake:windows:msvc++14.1:
-  stage: cmake
+full_pipeline:windows:msvc14.1:
+  stage: full_pipeline
   tags:
     - msvc++14.1
     - opengl
-  dependencies:
-    - conan:windows:msvc++14.1
   script:
-    - python .gitlab-ci.py cmake Windows "Visual Studio" 15
+    - mkdir build
+    - cd build
+    - cmake ..
+      -G "%COMPILER%"
+      -DENABLE_DEVELOPER_TESTS=ON
+      -DWITH_PYTHON_BINDINGS=ON
+      -DCMAKE_INSTALL_PREFIX=../install
+      -DPYTHON_EXECUTABLE:FILEPATH=C:\Python37_64\python.exe
+      -DPYTHON_INCLUDE_DIR:PATH=C:\Python37_64\include
+      -DPYTHON_LIBRARY:FILEPATH=C:\Python37_64\libs\python37.lib
+      -DConduit_DIR=C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install\lib\cmake
+      -DCMAKE_PREFIX_PATH=C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install
+      -DBOOST_ROOT=C:\boost_1_69_0
+      -DBoost_PYTHON_LIBRARY_DEBUG=C:\boost_1_69_0\lib64-msvc-14.1\boost_python37-vc141-mt-gd-x64-1_69.lib
+      -DBoost_PYTHON_LIBRARY_RELEASE=C:\boost_1_69_0\lib64-msvc-14.1\boost_python37-vc141-mt-x64-1_69.lib
+      -DCPPLINT_DIR=C:\dev\in_situ_dependencies\%COMPILER_SHORT%\src\cpplint
+      -DPYNESCI_INSTALL_PATH=C:\dev\in_situ_dependencies\pynesci\install
+#----------Build-----------
+    - cmake --build . --target INSTALL --config Release
+#----------Test------------
+    - set PATH=C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install\lib;C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install\bin\;C:\boost_1_69_0\lib64-msvc-14.1;%PATH%
+    - ctest . -C Release --verbose
+    - cd ../test_package
+    - mkdir build
+    - cd build
+    - cmake ..
+      -G "%COMPILER%"
+      -Dnesci_DIR=../install/lib/cmake/nesci
+      -DConduit_DIR=C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install\lib\cmake
+      -DBOOST_ROOT=C:\boost_1_60_0
+    - cmake --build . --config Release -- /p:CL_MPCount=8
+  variables:
+    COMPILER: 'Visual Studio 15 2017 Win64'
+    COMPILER_SHORT: msvc14.1-64
+    PY_TEST_DIR: C:/Python37_64/Scripts
+    CPPCHECK_DIR: C:\dev\in_situ_dependencies\%COMPILER_SHORT%\install\bin
   <<: *artifacts_definition
 
-build:windows:msvc++14.1:
-  stage: build
-  tags:
-    - msvc++14.1
-    - opengl
-  dependencies:
-    - cmake:windows:msvc++14.1
-  script:
-    - python .gitlab-ci.py build Windows "Visual Studio" 15
-  <<: *artifacts_definition
-
-test:windows:msvc++14.1:
-  stage: test
-  tags:
-    - msvc++14.1
-    - opengl
-  dependencies:
-    - build:windows:msvc++14.1
-  script:
-    - python .gitlab-ci.py test Windows "Visual Studio" 15
-  <<: *artifacts_definition
-
-deliver:windows:msvc++14.1:
-  stage: deliver
-  tags:
-    - msvc++14.1
-    - opengl
-  dependencies:
-    - test:windows:msvc++14.1
-  script:
-    - python .gitlab-ci.py deliver Windows "Visual Studio" 15
-  <<: *artifacts_definition
-  only:
-    *delivery_branches
-
 #-------------------------------------------------------------------------------
 #  Linux
 #-------------------------------------------------------------------------------
 
-# conan:linux:gcc5.3.1:
-#   stage: conan
-#   tags:
-#     - gcc5.3.1
-#     - opengl
-#   script:
-#     - python .gitlab-ci.py conan Linux gcc 5.3
-#   <<: *artifacts_definition
-    
-conan:linux:gcc6.3.1:
-  stage: conan
-  tags:
-    - gcc6.3.1
-    - opengl
-  script:
-    - python .gitlab-ci.py conan Linux gcc 6.3
-  <<: *artifacts_definition
-
-# cmake:linux:gcc5.3.1:
-#   stage: cmake
-#   tags:
-#     - gcc5.3.1
-#     - opengl
-#   dependencies:
-#     - conan:linux:gcc5.3.1
-#   script:
-#     - python .gitlab-ci.py cmake Linux gcc 5.3
-#   <<: *artifacts_definition
-
-cmake:linux:gcc6.3.1:
-  stage: cmake
-  tags:
-    - gcc6.3.1
-    - opengl
-  dependencies:
-    - conan:linux:gcc6.3.1
+# Templates
+# ---------
+.full_pipeline:linux:
+  stage: full_pipeline
   script:
-    - python .gitlab-ci.py cmake Linux gcc 6.3
+    - mkdir build
+    - cd build
+    - cmake ..
+      -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3
+      -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.4m
+      -DPYTHON_LIBRARY:FILEPATH=/usr/lib64/libpython3.4m.so
+      -DBOOST_INCLUDEDIR=/usr/include/boost169
+      -DBOOST_LIBRARYDIR=/usr/lib64/boost169
+      -DBoost_PYTHON_LIBRARY_DEBUG=/usr/lib64/boost169/libboost_python34.so
+      -DBoost_PYTHON_LIBRARY_RELEASE=/usr/lib64/boost169/libboost_python34.so
+      -DENABLE_DEVELOPER_TESTS=ON
+      -DWITH_PYTHON_BINDINGS=ON
+      -DCMAKE_INSTALL_PREFIX=./install
+      -DCMAKE_PREFIX_PATH=$HOME/dev/in_situ_dependencies/$COMPILER/install
+#----------Build-----------    
+    - make -j
+    - make install
+#----------Test------------
+    - ctest .
+    - cd ../test_package
+    - mkdir build
+    - cd build
+    - cmake ..
+      -Dnesci_DIR=../build/install/lib/cmake/nesci
+      -DCMAKE_PREFIX_PATH=$HOME/dev/in_situ_dependencies/$COMPILER/install
+    - make -j
   <<: *artifacts_definition
 
-# build:linux:gcc5.3.1:
-#   stage: build
-#   tags:
-#     - gcc5.3.1
-#     - opengl
-#   dependencies:
-#     - cmake:linux:gcc5.3.1
-#   script:
-#     - python .gitlab-ci.py build Linux gcc 5.3
-#   <<: *artifacts_definition
-
-build:linux:gcc6.3.1:
-  stage: build
+# Jobs
+# ----
+full_pipeline:linux:gcc5.3.1:
+  extends: .full_pipeline:linux
   tags:
-    - gcc6.3.1
+    - gcc5.3.1
     - opengl
-  dependencies:
-    - cmake:linux:gcc6.3.1
-  script:
-    - python .gitlab-ci.py build Linux gcc 6.3
-  <<: *artifacts_definition
+  only: *full_pipeline_branches
+  variables:
+    COMPILER: 'gcc5'
 
-# test:linux:gcc5.3.1:
-#   stage: test
-#   tags:
-#     - gcc5.3.1
-#     - opengl
-#   dependencies:
-#     - build:linux:gcc5.3.1
-#   script:
-#     - python .gitlab-ci.py test Linux gcc 5.3
-#   <<: *artifacts_definition
-
-test:linux:gcc6.3.1:
-  stage: test
+full_pipeline:linux:gcc6.3.1:
+  extends: .full_pipeline:linux
   tags:
     - gcc6.3.1
     - opengl
-  dependencies:
-    - build:linux:gcc6.3.1
-  script:
-    - python .gitlab-ci.py test Linux gcc 6.3
-  <<: *artifacts_definition
-
-# deliver:linux:gcc5.3.1:
-#   stage: deliver
-#   tags:
-#     - gcc5.3.1
-#     - opengl
-#   dependencies:
-#     - test:linux:gcc5.3.1
-#   script:
-#     - python .gitlab-ci.py deliver Linux gcc 5.3
-#   <<: *artifacts_definition
-#   only:
-#     *delivery_branches
+  only: *full_pipeline_branches
+  variables:
+    COMPILER: 'gcc6'
 
-deliver:linux:gcc6.3.1:
-  stage: deliver
+full_pipeline:linux:gcc7.3.1:
+  extends: .full_pipeline:linux
   tags:
-    - gcc6.3.1
+    - gcc7.3.1
     - opengl
-  dependencies:
-    - test:linux:gcc6.3.1
-  script:
-    - python .gitlab-ci.py deliver Linux gcc 6.3
-  <<: *artifacts_definition
-  only:
-    *delivery_branches
+  variables:
+    COMPILER: 'gcc7'
 
 #-------------------------------------------------------------------------------
 #  MacOS
 #-------------------------------------------------------------------------------
 
-conan:mac:clang9.1:
-  stage: conan
+.full_pipeline:macos:
+  stage: full_pipeline
   tags:
     - osx
   script:
-    - python .gitlab-ci.py conan macOS apple-clang 9.1
+    - mkdir build
+    - cd build
+    - cmake ..
+      -DConduit_DIR=$HOME/in_situ_dependencies/install/$COMPILER/lib/cmake
+      -DENABLE_DEVELOPER_TESTS=ON
+      -DWITH_PYTHON_BINDINGS=ON
+      -DBOOST_ROOT=$HOME/in_situ_dependencies/boost_1_69_0/build/macos-$COMPILER
+      -DCMAKE_INSTALL_PREFIX=./install
+#----------Build-----------    
+    - make -j
+    - make install
+#----------Test------------
+    - ctest . --output-on-failure
+    - cd ../test_package
+    - mkdir build
+    - cd build
+    - cmake ..
+      -DCMAKE_PREFIX_PATH=$HOME/in_situ_dependencies/install/$COMPILER
+      -Dnesci_DIR=../build/install/lib/cmake/nesci
+      -DConduit_DIR=$HOME/in_situ_dependencies/install/$COMPILER/lib/cmake
+      -DBOOST_INCLUDEDIR=/usr/local/opt/boost@1.59/include
+      -DBOOST_LIBRARYDIR=/usr/local/opt/boost-python@1.59/lib
+      -Dcppzmq_DIR=$HOME/in_situ_dependencies/install/$COMPILER/share/cmake/cppzmq/
+    - make -j
   <<: *artifacts_definition
 
-cmake:mac:clang9.1:
-  stage: cmake
-  tags:
-    - osx
-  dependencies:
-    - conan:mac:clang9.1
-  script:
-    - python .gitlab-ci.py cmake macOS apple-clang 9.1
+full_pipeline:macos:clang9.1:
+  extends: .full_pipeline:macos
+  variables:
+    COMPILER: clang9.1
   <<: *artifacts_definition
 
-build:mac:clang9.1:
-  stage: build
-  tags:
-    - osx
-  dependencies:
-    - cmake:mac:clang9.1
-  script:
-    - python .gitlab-ci.py build macOS apple-clang 9.1
+full_pipeline:macos:gcc5.5:
+  extends: .full_pipeline:macos
+  only: *full_pipeline_branches
+  variables:
+    CC: gcc-5
+    CXX: g++-5
+    COMPILER: gcc5.5
   <<: *artifacts_definition
 
-test:mac:clang9.1:
-  stage: test
-  tags:
-    - osx
-  dependencies:
-    - build:mac:clang9.1
-  script:
-    - python .gitlab-ci.py test macOS apple-clang 9.1
+full_pipeline:macos:gcc6.4:
+  extends: .full_pipeline:macos
+  only: *full_pipeline_branches
+  variables:
+    CC: gcc-6
+    CXX: g++-6
+    COMPILER: gcc6.4
   <<: *artifacts_definition
 
-deliver:mac:clang9.1:
-  stage: deliver
-  tags:
-    - osx
-  dependencies:
-    - test:mac:clang9.1
-  script:
-    - python .gitlab-ci.py deliver macOS apple-clang 9.1
+full_pipeline:macos:gcc7.3:
+  extends: .full_pipeline:macos
+  only: *full_pipeline_branches
+  variables:
+    CC: gcc-7
+    CXX: g++-7
+    COMPILER: gcc7.3
   <<: *artifacts_definition
-  only:
-    *delivery_branches
\ No newline at end of file
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..3d8390b2270407ae6aa53b8fb7a727b92faef230
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "cmake-utilities"]
+	path = cmake-utilities
+	url = https://devhub.vr.rwth-aachen.de/soehrl/cmake-utilities.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index be73800347b6e0e1b80a99eece905cfd882d6ce2..09cc79d4c07d7f2f0b32d5c813b293faa50ba145 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -23,67 +23,62 @@ cmake_minimum_required(VERSION 3.6.0)
 
 project(nesci)
 
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake-utilities)
 set(CMAKE_CXX_STANDARD 14)
 
-if (MSVC)
-  foreach(flag_var
-          CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
-          CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
-      if(${flag_var} MATCHES "/MD")
-          string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
-      endif(${flag_var} MATCHES "/MD")
-  endforeach(flag_var)
-endif (MSVC)
+if(UNIX AND NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Release)
+endif()
 
-include(ConanHelpers)
-include(CTest)
-include(GenerateExportHeader)
-include(rwthvr)
-include(get_target_include_directories)
+include(AddTarget)
+find_package(Conduit REQUIRED)
 
-enable_testing()
+option(ENABLE_TESTS "Enable testing to ensure contra is working correctly" ON)
+option(ENABLE_DEVELOPER_TESTS "Enable cppcheck and cpplint tests, only interesting for developers" OFF)
+option(WITH_PYTHON_BINDINGS "Create python bindings for the library" OFF)
 
-conan_or_find_package(catch REQUIRED)
-conan_or_find_package(conduit REQUIRED)
+if (NOT ENABLE_TESTS)
+  message(STATUS "ENABLE_TESTS was set to `OFF` cmake will skip the creation of all tests")
+endif (NOT ENABLE_TESTS)
 
-conan_or_find_package(cpplint REQUIRED)
-include(cpplint)
+if (ENABLE_TESTS AND NOT ENABLE_DEVELOPER_TESTS)
+  message(STATUS "ENABLE_TESTS was set to `ON` you can run the tests after building the library to ensure it is working correctly.")
+endif (ENABLE_TESTS AND NOT ENABLE_DEVELOPER_TESTS)
 
-conan_or_find_package(cppcheck REQUIRED)
-include(cppcheck)
+if (NOT ENABLE_TESTS AND ENABLE_DEVELOPER_TESTS)
+  message(SEND_ERROR "ENABLE_DEVELOPER_TESTS was set to `ON` but tests. To enable the developer tests you also need to set ENABLE_TESTS to `ON`.")
+endif (NOT ENABLE_TESTS AND ENABLE_DEVELOPER_TESTS)
 
-find_package(PythonInterp REQUIRED)
-find_package(PythonLibs REQUIRED)
+if (NOT ENABLE_DEVELOPER_TESTS)
+  set(GLOBAL_TARGET_OPTIONS NO_TESTS)
+endif ()
 
-include(py.test)
-include(python_module)
+if (ENABLE_TESTS)
+  enable_testing()
+  include(CTest)
+  add_subdirectory(testing)
+endif (ENABLE_TESTS)
 
-conan_or_find_package(boost_python REQUIRED)
-
-add_subdirectory(testing)
 add_subdirectory(consumer)
 add_subdirectory(producer)
-add_subdirectory(layout)
-add_subdirectory(pynesci)
-
-get_property(ALL_SOURCES GLOBAL PROPERTY RWTHVR_ALL_SOURCES)
-get_property(ALL_HEADERS GLOBAL PROPERTY RWTHVR_ALL_HEADERS)
-get_property(ALL_TARGETS GLOBAL PROPERTY RWTHVR_ALL_TARGETS)
-  
-add_test_cpplint(NAME "nesci-tests--cpplint"
-  ${ALL_SOURCES} ${ALL_HEADERS}
-)
-
-foreach(TARGET ${ALL_TARGETS})
-  message(${TARGET})
-  get_target_include_directories(TARGET_INCLUDE_DIRECTORIES TARGET ${TARGET})
-  set(INCLUDE_DIRECTORIES ${INCLUDE_DIRECTORIES};${TARGET_INCLUDE_DIRECTORIES})
-endforeach(TARGET ${ALL_TARGETS})
-list(REMOVE_DUPLICATES INCLUDE_DIRECTORIES)
-  
-add_test_cppcheck(NAME "nesci-tests--cppcheck"
-  SOURCES ${ALL_SOURCES}
-  INCLUDE_DIRECTORIES ${INCLUDE_DIRECTORIES}
-)
-  
+add_subdirectory(nesci)
+
+if (WITH_PYTHON_BINDINGS)
+  include(python_module)
+
+  if (ENABLE_TESTS)
+    include(py.test)
+  endif (ENABLE_TESTS)
+
+  find_package(PythonInterp REQUIRED)
+  find_package(PythonLibs ${PYTHON_VERSION_STRING} EXACT REQUIRED)
+  find_package(Boost REQUIRED COMPONENTS python${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR})
+
+  add_subdirectory(pynesci)
+endif (WITH_PYTHON_BINDINGS)
+
+install(
+  FILES ${CMAKE_SOURCE_DIR}/cmake/nesci-config.cmake
+        ${CMAKE_SOURCE_DIR}/cmake/FindConduit.cmake
+  DESTINATION lib/cmake/nesci)
diff --git a/CPPLINT.cfg b/CPPLINT.cfg
index ce7c7e4c264e5a39da61062cc86686e28865fee8..0628372ae2a303c7dc729c759e59b5267292dec6 100644
--- a/CPPLINT.cfg
+++ b/CPPLINT.cfg
@@ -2,3 +2,4 @@ set noparent
 filter=-readability/check,-build/c++tr1,-build/c++11,-build/c++14
 linelength=80
 headers=h,hpp
+root=nesci
diff --git a/LICENSE b/LICENSE
index fe0500bf23add2fa1639628e396c0b3d24f1c212..78cee5aa9c6083108924462d9dd9aa9a6097e11e 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,5 +1,5 @@
 --------------------------------------------------------------------------------
- nesci -- neural simulator conan interface
+ nesci -- neuronal simulator conan interface
 
  Copyright (c) 2018 RWTH Aachen University, Germany,
  Virtual Reality & Immersive Visualisation Group.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..9d5536ba4f4508dddd52d3a80e0af754ba1690bc
--- /dev/null
+++ b/README.md
@@ -0,0 +1,107 @@
+# nesci -- neuronal simulator conan interface
+
+[License](https://devhub.vr.rwth-aachen.de/VR-Group/nesci/blob/master/LICENSE)
+
+[Latest Version](https://devhub.vr.rwth-aachen.de/VR-Group/nesci)
+
+![Build Status](https://devhub.vr.rwth-aachen.de/VR-Group/nesci/badges/master/build.svg)
+
+# Introduction
+
+Nesci is designed as a conan interface for neuronal simulators such as NEST.
+It is split into a producer and a consumer part .
+
+Nesci has been cross-developed for both Windows and Unix systems.
+
+## Supported compilers:
+  - msvc (tested with msvc++14.1) 
+  - gcc (tested with gcc 5.3.1, 6.3.1 and 7.3.1)
+  - clang (tested with clang 9.1)
+  
+Other compilers versions might work as well. 
+
+## The different modules it includes:
+  - Producer
+    - The Producer records data received from different multimeters (NEST or Arbor) as well as spike detectors.
+	
+  - Consumer
+    - The Consumer receives the data recorded by the Producer, it also functions for the same multimeters and spike detectors.
+	- It has functionality to read out the timesteps for datapoints or a whole series of data.
+	
+    - The Consumer and Producer can also be used with a Python module by setting:
+	cmake -PYTHON_ENABLE_MODULE__pyconsumer=True
+	cmake -PYTHON_ENABLE_MODULE__pynesci=True
+	- or setting those options to true in the CMake GUI
+
+# API
+## Consumer
+Every class is inside the namespace `nesci::consumer`.
+
+**SpikeDetectorDataView**
+```c++
+class SpikeDetectorDataView {
+  conduit::float64_array GetTimesteps() const;
+  conduit::uint64_array GetNeuronIds() const;
+};
+```
+SpikeDetectorDataView gives access to two arrays with the same number of entries. The length of these arrays represent the number of spikes that are described in the dataset. So, GetTimesteps()[i] represents the simulation time and GetNeuronIds()[i] represents the neuron id of the `i`th spike described in the dataset. *The data is not guaranteed to be sorted in any way.*
+
+**NestMultimeterDataView**
+```c++
+class NestMultimeterDataView {
+  double GetTimestep() const;
+  conduit::uint64_array GetNeuronIds() const;
+  std::vector<std::string> GetIntegerAttributeNames() const;
+  std::vector<std::string> GetFloatingPointAttributeNames() const;
+  conduit::int64_array GetIntegerAttributeValues(
+      const std::string& attribute
+  ) const;
+  conduit::float64_array GetFloatingPointAttributeValues(
+      const std::string& attribute
+  ) const;
+};
+```
+NestMultimeterDataView gives access to the data recorded by a nest multimeter. One dataset describes the values of multiple attributes of multiple neurons *for a single timestep*.
+
+The timestep can be retreived using `GetTimestep()`. The IDs of the nereurons whose attributes values are contained in this dataset can be retrieved using `GetNeuronIds()`. The names of the attributes stored in the dataset can be retrieved using `GetIntegerAttributeNames()` and `GetFloatingPointAttributeNames()` depending on their type. Finally, the values of each neuron for one attribute can be retrieved using `GetIntegerAttributeValues()` or `GetFloatingPointAttributeValues()` again depending on their type. The value with index `i` again corresponds to the neuron id with index `i` returned from `GetNeuronIds()`.
+	
+# Building nesci
+
+## Dependencies
+The version numbers specify the versions used for testing. Other versions may also work.
+
+### Required
+  - [CMake](https://cmake.org/) (v3.6.0 or higher)
+  - [Conduit](https://github.com/LLNL/conduit) (v0.3.1)
+
+### Optional
+When you want the python bindings (`-DWITH_PYTHON_BINDINGS=ON`, `OFF` by default) you will also need the following:
+  - [Boost.Python](https://www.boost.org/users/download/)
+  - [Python](https://www.python.org/)
+
+If you want to enable the tests (`-DENABLE_TESTS=ON`, `ON` by default) you will also need:
+  - [Catch2](https://github.com/catchorg/Catch2)
+
+If you want to to contribute to the library you want to have the developer tests enabled (`-DENABLE_DEVELOPER_TESTS=ON`, `OFF` by default) and you will also need:
+  - [Cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint)
+  - [Cppcheck](https://sourceforge.net/projects/cppcheck/)
+
+## Building nesci
+
+1. Build all dependencies you need and install them to a directory `$DEPENDENCY_DIR`.
+2. Create a build directory and run CMake from there `cmake [FLAGS] -DCMAKE_INSTALL_PREFIX=[INSTALL_DIRECTORY] [PATH_TO_NESCI_SOURCE]`. Where `[INSTALL_DIRECTORY]` is the directory where the library should be installed and `[PATH_TO_NESCI_SOURCE]` is the path to the root of this repository. The values for `[FLAGS]` depends on your configuration (see below).
+3. Run `make [-j]` to build the library.
+4. Run `make test` to check if everything went fine (only if `ENABLE_TESTS` was set to `ON` default: `ON`).
+5. Run `make install` to install the library.
+
+### Minimal build
+`cmake -DCONDUIT_DIR=$DEPENDENCY_DIR -DENABLE_TESTS=OFF -DCMAKE_INSTALL_PREFIX=[INSTALL_DIRECTORY] [PATH_TO_NESCI_SOURCE]`
+
+## Using nesci
+
+```
+find_package(nesci REQUIRED producer consumer)
+# ...
+target_link_libraries(... nesci_producer nesci_consumer)
+```
+See `test_package/CMakeLists.txt` for an example.
\ No newline at end of file
diff --git a/cmake-utilities b/cmake-utilities
new file mode 160000
index 0000000000000000000000000000000000000000..e30f0946d67e80fbbe04e41d4fb294e01b75c3b8
--- /dev/null
+++ b/cmake-utilities
@@ -0,0 +1 @@
+Subproject commit e30f0946d67e80fbbe04e41d4fb294e01b75c3b8
diff --git a/cmake/ConanHelpers.cmake b/cmake/ConanHelpers.cmake
deleted file mode 100644
index 2a1b2cae384e84b00793b6b18291c9b33181d4b1..0000000000000000000000000000000000000000
--- a/cmake/ConanHelpers.cmake
+++ /dev/null
@@ -1,110 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-#download/build the missing dependencies
-include(conan)
-execute_process(COMMAND conan remote add bincrafters https://api.bintray.com/conan/bincrafters/public-conan False OUTPUT_QUIET)
-execute_process(COMMAND conan remote add rwth-vr https://api.bintray.com/conan/rwth-vr/conan False OUTPUT_QUIET)
-conan_cmake_run(CONANFILE conanfile.py
-                BUILD missing)
-
-find_file(CONAN_COMMAND
-  NAMES conan conan.exe
-  PATHS ENV PATH ENV CONAN_DIR
-)
-if(CONAN_COMMAND)
-  option(USE_CONAN "Use conan for dependency managment." ON)
-else()
-  message(STATUS
-    " NOTICE:\n"
-    "      This project can use conan for dependency management.\n"
-    "      Apparently, you do not have conan installed on your machine.\n"
-    "      So you need to keep track of all dependencies.\n"
-    "      In order to use conan, please install it:\n"
-    "          pip install conan\n"
-    "      More info: https://conan.io"
-  )
-endif()
-
-#we reset CONAN_BUILD_INFO, so it is searched everytime, e.g. if we want to change from multi to a specific config
-set (CONAN_BUILD_INFO "CONAN_BUILD_INFO-NOTFOUND")
-find_file(CONAN_BUILD_INFO conanbuildinfo_multi.cmake
-  NO_DEFAULT_PATH
-  PATHS ${CMAKE_BINARY_DIR}
-)
-if(${CONAN_BUILD_INFO} STREQUAL  "CONAN_BUILD_INFO-NOTFOUND")
-	find_file(CONAN_BUILD_INFO conanbuildinfo.cmake
-	  NO_DEFAULT_PATH
-	  PATHS ${CMAKE_BINARY_DIR}
-	)
-	if(NOT ${CONAN_BUILD_INFO} STREQUAL  "CONAN_BUILD_INFO-NOTFOUND")
-		set( USE_NOT_MULTI_CONAN_BUILD_INFO TRUE)
-	endif()
-endif()
-
-
-if(USE_CONAN AND NOT CONAN_BUILD_INFO)
-  message(FATAL_ERROR
-    " Error using conan:\n"
-    "   You need to execute 'conan install' before running cmake!\n"
-    "   Aborting.")
-endif()
-
-
-if(USE_CONAN AND CONAN_BUILD_INFO)
-  include(${CONAN_BUILD_INFO})
-  if(USE_NOT_MULTI_CONAN_BUILD_INFO)
-	conan_basic_setup(TARGETS NO_OUTPUT_DIRS KEEP_RPATHS)
-  else()
-    conan_basic_setup(TARGETS KEEP_RPATHS)
-  endif()
-endif()
-
-macro(CONAN_OR_FIND_PACKAGE package)
-  # parse arguments
-  set(options)
-  set(oneValueArgs CONAN_NAME)
-  set(multiValueArgs)
-  cmake_parse_arguments(CONAN_OR_FIND_PACKAGE
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  string(REPLACE ";" " " ADDITIONAL_PARAMS "${CONAN_OR_FIND_PACKAGE_UNPARSED_ARGUMENTS}")
-
-  # set default conan target name if CONAN_NAME was not specified
-  if(CONAN_OR_FIND_PACKAGE_CONAN_NAME)
-    set(CONAN_PACKAGE_NAME CONAN_PKG::${CONAN_OR_FIND_PACKAGE_CONAN_NAME})
-  else()
-    set(CONAN_PACKAGE_NAME CONAN_PKG::${package})
-  endif()
-
-  # set target variable to be used in target_link_libraries accordingly
-  option(USE_CONAN_${package} "Use conan for dependency ${package}" ${USE_CONAN})
-  string(REPLACE "." "_"
-    package_underscored
-    ${package}
-    )
-  if(USE_CONAN AND USE_CONAN_${package})
-    set(CONAN_OR_CMAKE_${package_underscored} ${CONAN_PACKAGE_NAME})
-  else()
-    find_package(${package} ${ADDITIONAL_PARAMS})
-    set(CONAN_OR_CMAKE_${package_underscored} ${package})
-  endif()
-endmacro()
-
diff --git a/layout/tests/CMakeLists.txt b/cmake/FindConduit.cmake
similarity index 53%
rename from layout/tests/CMakeLists.txt
rename to cmake/FindConduit.cmake
index 06fd88027fb9a1ba46f708237de3b2fc246939a4..179ee597b8d05069eb1fd2c9cd0720a8bf96bcf6 100644
--- a/layout/tests/CMakeLists.txt
+++ b/cmake/FindConduit.cmake
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,30 +19,41 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB LAYOUT_TEST_SOURCES *.cpp)
-file(GLOB LAYOUT_TEST_HEADERS *.hpp)
+find_file(
+  Conduit_CONFIG_FILE
+  "conduit.cmake"
+  HINTS
+    ${Conduit_DIR}
+    ${CONDUIT_DIR}/lib/cmake  # For backwards comability
+  PATH_SUFFIXES
+    lib/cmake
+)
 
-rwthvr_add_executable(
-  NAME layout_tests
-  SOURCES ${LAYOUT_TEST_SOURCES} 
-  HEADERS ${LAYOUT_TEST_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/layout_tests/suppress_warnings.hpp"
-  )
-  
-target_include_directories(layout_tests
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-set(LAYOUT_TESTS_ARGUMENTS ""
-  CACHE STRING
-  "Arguments, e.g., tags, that are passed to layout_tests executable."
-  )
-add_test(NAME layout_tests
-  COMMAND layout_tests ${LAYOUT_TESTS_ARGUMENTS}
-  )
+find_path(
+  Conduit_INCLUDE_DIRECTORIES
+  "conduit/conduit.h"
+  HINTS
+    ${Conduit_DIR}/../../include
+    ${CONDUIT_DIR}/include  # For backwards comability
+)
+
+mark_as_advanced(
+  Conduit_CONFIG_FILE
+  Conduit_INCLUDE_DIRECTORIES
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Conduit
+  FOUND_VAR Conduit_FOUND
+  REQUIRED_VARS
+    Conduit_CONFIG_FILE
+    Conduit_INCLUDE_DIRECTORIES
+)
 
-target_link_libraries(layout_tests
-  PRIVATE nesci_layout
-  PRIVATE testing
-  PRIVATE ${CONAN_OR_CMAKE_catch}
+if (Conduit_FOUND AND NOT TARGET conduit)
+  include(${Conduit_CONFIG_FILE})
+  set_target_properties(conduit
+    PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES ${Conduit_INCLUDE_DIRECTORIES}
   )
+endif ()
diff --git a/cmake/WarningLevels.cmake b/cmake/WarningLevels.cmake
deleted file mode 100644
index e97b46b436467cad62aa41c92b9f62c7500ab60e..0000000000000000000000000000000000000000
--- a/cmake/WarningLevels.cmake
+++ /dev/null
@@ -1,102 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-# flags for default warning levels
-set(WARNING_LEVELS_RWTH_CLANG
-  -Werror
-  -Weverything
-  -pedantic
-  -pedantic-errors
-  -Wextra-tokens
-  -Wambiguous-member-template
-  -Wbind-to-temporary-copy
-  -Wno-c++98-compat
-  -Wno-c++98-compat-pedantic
-  -Wno-weak-vtables
-  -Wno-exit-time-destructors
-  -Wno-global-constructors
-  -Wno-shadow-field-in-constructor
-)
-
-set(WARNING_LEVELS_RWTH_GCC
-  -Werror
-  -Wall
-  -Wextra
-  -Wmissing-braces
-  -pedantic
-  -pedantic-errors
-  -Wno-c++98-compat
-)
-
-set(WARNING_LEVELS_RWTH_MSVC
-  -D_SCL_SECURE_NO_WARNINGS
-  -WX
-  -W4
-  "$<$<CXX_COMPILER_ID:MSVC>:/w34062>"
-  "$<$<CXX_COMPILER_ID:MSVC>:/w24302>"
-  "$<$<CXX_COMPILER_ID:MSVC>:/w14311>"
-  "$<$<CXX_COMPILER_ID:MSVC>:/w14312>"
-)
-
-# compiler identification
-if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND
-    CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  set(IS_CLANG 1)
-elseif(CMAKE_C_COMPILER_ID MATCHES "MSVC" AND
-    CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-  set(IS_MSVC 1)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU" AND
-    CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-  set(IS_GCC 1)
-endif()
-
-# warning level setter macros
-macro(SET_WARNING_LEVELS_RWTH TARGET)
-  set(options)
-  set(oneValueArgs SUPPRESS_WARNINGS_HEADER)
-  set(multiValueArgs)
-  cmake_parse_arguments(SWLR
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-  if (SWLR_SUPPRESS_WARNINGS_HEADER)
-    set(SUPPRESS_WARNING_HEADER_FILE ${SWLR_SUPPRESS_WARNINGS_HEADER})
-  else()
-    set(SUPPRESS_WARNING_HEADER_FILE ${CMAKE_CURRENT_BINARY_DIR}/${target}/suppress_warnings.hpp) 
-  endif()
-  
-  find_file(SUPPRESS_WARNING_HEADER_TEMPLATE suppress_warnings.hpp.in
-    NO_DEFAULT_PATH
-    PATHS ${CMAKE_MODULE_PATH}
-  )
-  configure_file(${SUPPRESS_WARNING_HEADER_TEMPLATE} ${SUPPRESS_WARNING_HEADER_FILE})
-  
-  if(IS_CLANG)
-    target_compile_options(${TARGET} PRIVATE ${WARNING_LEVELS_RWTH_CLANG})
-  elseif(IS_GCC)
-    target_compile_options(${TARGET} PRIVATE ${WARNING_LEVELS_RWTH_GCC})
-  elseif(IS_MSVC)
-    target_compile_options(${TARGET} PRIVATE ${WARNING_LEVELS_RWTH_MSVC})
-  else()
-    message(WARNING "SET_WARNING_LEVELS_RWTH not implemented for your compiler. "
-      "Implement it to support our no-warning policy.")
-  endif()
-endmacro()
-  
diff --git a/cmake/conan.cmake b/cmake/conan.cmake
deleted file mode 100644
index c946ae44d42a05e692c87839e2b9cfa042955e80..0000000000000000000000000000000000000000
--- a/cmake/conan.cmake
+++ /dev/null
@@ -1,363 +0,0 @@
-# copied from https://github.com/conan-io/cmake-conan 
-# which should be under MIT license
-
-include(CMakeParseArguments)
-
-function(_get_msvc_ide_version result)
-    set(${result} "" PARENT_SCOPE)
-    if(NOT MSVC_VERSION VERSION_LESS 1400 AND MSVC_VERSION VERSION_LESS 1500)
-        set(${result} 8 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1500 AND MSVC_VERSION VERSION_LESS 1600)
-        set(${result} 9 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1600 AND MSVC_VERSION VERSION_LESS 1700)
-        set(${result} 10 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1700 AND MSVC_VERSION VERSION_LESS 1800)
-        set(${result} 11 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1800 AND MSVC_VERSION VERSION_LESS 1900)
-        set(${result} 12 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1900 AND MSVC_VERSION VERSION_LESS 1910)
-        set(${result} 14 PARENT_SCOPE)
-    elseif(NOT MSVC_VERSION VERSION_LESS 1910 AND MSVC_VERSION VERSION_LESS 1920)
-        set(${result} 15 PARENT_SCOPE)
-    else()
-        message(FATAL_ERROR "Conan: Unknown MSVC compiler version [${MSVC_VERSION}]")
-    endif()
-endfunction()
-
-function(conan_cmake_settings result)
-    #message(STATUS "COMPILER " ${CMAKE_CXX_COMPILER})
-    #message(STATUS "COMPILER " ${CMAKE_CXX_COMPILER_ID})
-    #message(STATUS "VERSION " ${CMAKE_CXX_COMPILER_VERSION})
-    #message(STATUS "FLAGS " ${CMAKE_LANG_FLAGS})
-    #message(STATUS "LIB ARCH " ${CMAKE_CXX_LIBRARY_ARCHITECTURE})
-    #message(STATUS "BUILD TYPE " ${CMAKE_BUILD_TYPE})
-    #message(STATUS "GENERATOR " ${CMAKE_GENERATOR})
-    #message(STATUS "GENERATOR WIN64 " ${CMAKE_CL_64})
-
-    message(STATUS "Conan ** WARNING** : This detection of settings from cmake is experimental and incomplete. "
-                    "Please check 'conan.cmake' and contribute")
-
-    if(CONAN_CMAKE_MULTI)
-        set(_SETTINGS -g cmake_multi)
-    else()
-        set(_SETTINGS -g cmake)
-    endif()
-    if(CMAKE_BUILD_TYPE)
-        set(_SETTINGS ${_SETTINGS} -s build_type=${CMAKE_BUILD_TYPE})
-    else()
-        message(FATAL_ERROR "Please specify in command line CMAKE_BUILD_TYPE (-DCMAKE_BUILD_TYPE=Release)")
-    endif()
-
-    #handle -s os setting
-    if(CMAKE_SYSTEM_NAME)
-        #use default conan os setting if CMAKE_SYSTEM_NAME is not defined
-        set(CONAN_SYSTEM_NAME ${CMAKE_SYSTEM_NAME})
-        if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-            set(CONAN_SYSTEM_NAME Macos)
-        endif()
-        set(CONAN_SUPPORTED_PLATFORMS Windows Linux Macos Android iOS FreeBSD)
-        list (FIND CONAN_SUPPORTED_PLATFORMS "${CONAN_SYSTEM_NAME}" _index)
-        if (${_index} GREATER -1)
-            #check if the cmake system is a conan supported one
-            set(_SETTINGS ${_SETTINGS} -s os=${CONAN_SYSTEM_NAME})
-        else()
-            message(FATAL_ERROR "cmake system ${CONAN_SYSTEM_NAME} is not supported by conan. Use one of ${CONAN_SUPPORTED_PLATFORMS}")
-        endif()
-    endif()
-
-    get_property(_languages GLOBAL PROPERTY ENABLED_LANGUAGES)
-    if (";${_languages};" MATCHES ";CXX;")
-        set(LANGUAGE CXX)
-        set(USING_CXX 1)
-    elseif (";${_languages};" MATCHES ";C;")
-        set(LANGUAGE C)
-        set(USING_CXX 0)
-    else ()
-        message(FATAL_ERROR "Conan: Neither C or C++ was detected as a language for the project. Unabled to detect compiler version.")
-    endif()
-
-    if (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL GNU)
-        # using GCC
-        # TODO: Handle other params
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        set(COMPILER_VERSION ${MAJOR}.${MINOR})
-        set(_SETTINGS ${_SETTINGS} -s compiler=gcc -s compiler.version=${COMPILER_VERSION})
-        if (USING_CXX)
-          conan_cmake_detect_gnu_libcxx(_LIBCXX)
-            set(_SETTINGS ${_SETTINGS} -s compiler.libcxx=${_LIBCXX})
-        endif ()
-    elseif (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL AppleClang)
-        # using AppleClang
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        set(_SETTINGS ${_SETTINGS} -s compiler=apple-clang -s compiler.version=${MAJOR}.${MINOR})
-        if (USING_CXX)
-            set(_SETTINGS ${_SETTINGS} -s compiler.libcxx=libc++)
-        endif ()
-    elseif (${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL Clang)
-        string(REPLACE "." ";" VERSION_LIST ${CMAKE_${LANGUAGE}_COMPILER_VERSION})
-        list(GET VERSION_LIST 0 MAJOR)
-        list(GET VERSION_LIST 1 MINOR)
-        if(APPLE)
-            cmake_policy(GET CMP0025 APPLE_CLANG_POLICY_ENABLED)
-            if(NOT APPLE_CLANG_POLICY_ENABLED)
-                message(STATUS "Conan: APPLE and Clang detected. Assuming apple-clang compiler. Set CMP0025 to avoid it")
-                set(_SETTINGS ${_SETTINGS} -s compiler=apple-clang -s compiler.version=${MAJOR}.${MINOR})
-            else()
-                set(_SETTINGS ${_SETTINGS} -s compiler=clang -s compiler.version=${MAJOR}.${MINOR})
-            endif()
-            if (USING_CXX)
-                set(_SETTINGS ${_SETTINGS} -s compiler.libcxx=libc++)
-            endif ()
-        else()
-            set(_SETTINGS ${_SETTINGS} -s compiler=clang -s compiler.version=${MAJOR}.${MINOR})
-            if (USING_CXX)
-                conan_cmake_detect_gnu_libcxx(_LIBCXX)
-                set(_SETTINGS ${_SETTINGS} -s compiler.libcxx=${_LIBCXX})
-            endif ()
-        endif()
-    elseif(${CMAKE_${LANGUAGE}_COMPILER_ID} STREQUAL MSVC)
-        set(_VISUAL "Visual Studio")
-        _get_msvc_ide_version(_VISUAL_VERSION)
-        if("${_VISUAL_VERSION}" STREQUAL "")
-            message(FATAL_ERROR "Conan: Visual Studio not recognized")
-        else()
-            set(_SETTINGS ${_SETTINGS} -s compiler=${_VISUAL} -s compiler.version=${_VISUAL_VERSION})
-        endif()
-
-        if (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "64")
-            set(_SETTINGS ${_SETTINGS} -s arch=x86_64)
-        elseif (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "^ARM")
-            message(STATUS "Conan: Using default ARM architecture from MSVC")
-            set(_SETTINGS ${_SETTINGS} -s arch=armv6)
-        elseif (MSVC_${LANGUAGE}_ARCHITECTURE_ID MATCHES "86")
-            set(_SETTINGS ${_SETTINGS} -s arch=x86)
-        else ()
-            message(FATAL_ERROR "Conan: Unknown MSVC architecture [${MSVC_${LANGUAGE}_ARCHITECTURE_ID}]")
-        endif()
-
-        conan_cmake_detect_vs_runtime(_vs_runtime)
-        message(STATUS "Detected VS runtime: ${_vs_runtime}")
-        set(_SETTINGS ${_SETTINGS} -s compiler.runtime=${_vs_runtime})
-    else()
-        message(FATAL_ERROR "Conan: compiler setup not recognized")
-    endif()
-
-    set(${result} ${_SETTINGS} PARENT_SCOPE)
-endfunction()
-
-
-function(conan_cmake_detect_gnu_libcxx result)
-    # Allow -D_GLIBCXX_USE_CXX11_ABI=ON/OFF as argument to cmake
-    if(DEFINED _GLIBCXX_USE_CXX11_ABI)
-        if(_GLIBCXX_USE_CXX11_ABI)
-            set(${result} libstdc++11 PARENT_SCOPE)
-            return()
-        else()
-            set(${result} libstdc++ PARENT_SCOPE)
-            return()
-        endif()
-    endif()
-
-    # Check if there's any add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
-    get_directory_property(defines DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} COMPILE_DEFINITIONS)
-    foreach(define ${defines})
-        if(define STREQUAL "_GLIBCXX_USE_CXX11_ABI=0")
-            set(${result} libstdc++ PARENT_SCOPE)
-            return()
-        endif()
-    endforeach()
-
-    # Use C++11 stdlib as default if gcc is 5.1+
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1")
-      set(${result} libstdc++ PARENT_SCOPE)
-    else()
-      set(${result} libstdc++11 PARENT_SCOPE)
-    endif()
-endfunction()
-
-
-function(conan_cmake_detect_vs_runtime result)
-    string(TOUPPER ${CMAKE_BUILD_TYPE} build_type)
-    set(variables CMAKE_CXX_FLAGS_${build_type} CMAKE_C_FLAGS_${build_type} CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
-    foreach(variable ${variables})
-        string(REPLACE " " ";" flags ${${variable}})
-        foreach (flag ${flags})
-            if(${flag} STREQUAL "/MD" OR ${flag} STREQUAL "/MDd" OR ${flag} STREQUAL "/MT" OR ${flag} STREQUAL "/MTd")
-                string(SUBSTRING ${flag} 1 -1 runtime)
-                set(${result} ${runtime} PARENT_SCOPE)
-                return()
-            endif()
-        endforeach()
-    endforeach()
-    if(${build_type} STREQUAL "DEBUG")
-        set(${result} "MDd" PARENT_SCOPE)
-    else()
-        set(${result} "MD" PARENT_SCOPE)
-    endif()
-endfunction()
-
-
-macro(parse_arguments)
-  set(options BASIC_SETUP CMAKE_TARGETS UPDATE KEEP_RPATHS)
-  set(oneValueArgs CONANFILE DEBUG_PROFILE RELEASE_PROFILE PROFILE)
-  set(multiValueArgs REQUIRES OPTIONS IMPORTS BUILD CONAN_COMMAND)
-  cmake_parse_arguments(ARGUMENTS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN} )
-endmacro()
-
-function(conan_cmake_install)
-    # Calls "conan install"
-    # Argument BUILD is equivalant to --build={missing, PkgName,...} or
-    # --build when argument is 'BUILD all' (which builds all packages from source)
-    # Argument CONAN_COMMAND, to specify the conan path, e.g. in case of running from source
-    # cmake does not identify conan as command, even if it is +x and it is in the path
-    parse_arguments(${ARGV})
-
-    set(CONAN_BUILD_POLICY "")
-    foreach(ARG ${ARGUMENTS_BUILD})
-        if(${ARG} STREQUAL "all")
-            set(CONAN_BUILD_POLICY ${CONAN_BUILD_POLICY} --build)
-            break()
-        else()
-            set(CONAN_BUILD_POLICY ${CONAN_BUILD_POLICY} --build=${ARG})
-        endif()
-    endforeach()
-    if(ARGUMENTS_CONAN_COMMAND)
-       set(conan_command ${ARGUMENTS_CONAN_COMMAND})
-    else()
-      set(conan_command conan)
-    endif()
-    set(CONAN_OPTIONS "")
-    if(ARGUMENTS_CONANFILE)
-      set(CONANFILE ${CMAKE_CURRENT_SOURCE_DIR}/${ARGUMENTS_CONANFILE})
-      # A conan file has been specified - apply specified options as well if provided
-      foreach(ARG ${ARGUMENTS_OPTIONS})
-          set(CONAN_OPTIONS ${CONAN_OPTIONS} -o ${ARG})
-      endforeach()
-    else()
-      set(CONANFILE ".")
-    endif()
-    if(CMAKE_BUILD_TYPE STREQUAL "Debug" AND ARGUMENTS_DEBUG_PROFILE)
-      set(settings -pr ${ARGUMENTS_DEBUG_PROFILE})
-    endif()
-    if(CMAKE_BUILD_TYPE STREQUAL "Release" AND ARGUMENTS_RELEASE_PROFILE)
-      set(settings -pr ${ARGUMENTS_RELEASE_PROFILE})
-    endif()
-    if(ARGUMENTS_PROFILE)
-      set(settings -pr ${ARGUMENTS_PROFILE})
-    endif()
-    if(ARGUMENTS_UPDATE)
-      set(CONAN_INSTALL_UPDATE --update)
-    endif()
-    set(conan_args install ${CONANFILE} ${settings} ${CONAN_BUILD_POLICY} ${CONAN_INSTALL_UPDATE} ${CONAN_OPTIONS})
-
-    string (REPLACE ";" " " _conan_args "${conan_args}")
-    message(STATUS "Conan executing: ${conan_command} ${_conan_args}")
-
-    execute_process(COMMAND ${conan_command} ${conan_args}
-                     RESULT_VARIABLE return_code
-                     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-
-    if(NOT "${return_code}" STREQUAL "0")
-      message(FATAL_ERROR "Conan install failed='${return_code}'")
-    endif()
-
-endfunction()
-
-
-function(conan_cmake_setup_conanfile)
-  parse_arguments(${ARGV})
-  if(ARGUMENTS_CONANFILE)
-    # configure_file will make sure cmake re-runs when conanfile is updated
-    configure_file(${ARGUMENTS_CONANFILE} ${ARGUMENTS_CONANFILE}.junk)
-    file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/${ARGUMENTS_CONANFILE}.junk)
-  else()
-    conan_cmake_generate_conanfile(${ARGV})
-  endif()
-endfunction()
-
-function(conan_cmake_generate_conanfile)
-  # Generate, writing in disk a conanfile.txt with the requires, options, and imports
-  # specified as arguments
-  # This will be considered as temporary file, generated in CMAKE_CURRENT_BINARY_DIR)
-  parse_arguments(${ARGV})
-  set(_FN "${CMAKE_CURRENT_BINARY_DIR}/conanfile.txt")
-
-  file(WRITE ${_FN} "[generators]\ncmake\n\n[requires]\n")
-  foreach(ARG ${ARGUMENTS_REQUIRES})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-
-  file(APPEND ${_FN} ${ARG} "\n[options]\n")
-  foreach(ARG ${ARGUMENTS_OPTIONS})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-
-  file(APPEND ${_FN} ${ARG} "\n[imports]\n")
-  foreach(ARG ${ARGUMENTS_IMPORTS})
-    file(APPEND ${_FN} ${ARG} "\n")
-  endforeach()
-endfunction()
-
-
-macro(conan_load_buildinfo)
-    if(CONAN_CMAKE_MULTI)
-      set(_CONANBUILDINFO conanbuildinfo_multi.cmake)
-    else()
-      set(_CONANBUILDINFO conanbuildinfo.cmake)
-    endif()
-    # Checks for the existence of conanbuildinfo.cmake, and loads it
-    # important that it is macro, so variables defined at parent scope
-    if(EXISTS "${CMAKE_CURRENT_BINARY_DIR}/${_CONANBUILDINFO}")
-      message(STATUS "Conan: Loading ${_CONANBUILDINFO}")
-      include(${CMAKE_CURRENT_BINARY_DIR}/${_CONANBUILDINFO})
-    else()
-      message(FATAL_ERROR "${_CONANBUILDINFO} doesn't exist in ${CMAKE_CURRENT_BINARY_DIR}")
-    endif()
-endmacro()
-
-
-macro(conan_cmake_run)
-    parse_arguments(${ARGV})
-
-    if(CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE AND NOT CONAN_EXPORTED)
-        set(CONAN_CMAKE_MULTI ON)
-        message(STATUS "Conan: Using cmake-multi generator")
-    else()
-        set(CONAN_CMAKE_MULTI OFF)
-    endif()
-    if(NOT CONAN_EXPORTED)
-        conan_cmake_setup_conanfile(${ARGV})
-        if(CONAN_CMAKE_MULTI)
-            foreach(CMAKE_BUILD_TYPE "Release" "Debug")
-                conan_cmake_settings(settings)
-                conan_cmake_install(SETTINGS ${settings} ${ARGV})
-            endforeach()
-            set(CMAKE_BUILD_TYPE)
-        else()
-            conan_cmake_settings(settings)
-            conan_cmake_install(SETTINGS ${settings} ${ARGV})
-        endif()
-    endif()
-
-    conan_load_buildinfo()
-
-    if(ARGUMENTS_BASIC_SETUP)
-      if(ARGUMENTS_CMAKE_TARGETS)
-        if(ARGUMENTS_KEEP_RPATHS)
-            conan_basic_setup(TARGETS KEEP_RPATHS)
-        else()
-            conan_basic_setup(TARGETS)
-        endif()
-      else()
-        if(ARGUMENTS_KEEP_RPATHS)
-            conan_basic_setup(KEEP_RPATHS)
-        else()
-            conan_basic_setup()
-        endif()
-      endif()
-    endif()
-endmacro()
diff --git a/cmake/cppcheck.cmake b/cmake/cppcheck.cmake
deleted file mode 100644
index a0890e58238e9d86887cc317828a1b138b6395c3..0000000000000000000000000000000000000000
--- a/cmake/cppcheck.cmake
+++ /dev/null
@@ -1,62 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-set(CPPCHECK_COMMAND NOTFOUND)
-find_program(CPPCHECK_COMMAND NAMES cppcheck cppcheck.exe 
-    PATHS ${CONAN_BIN_DIRS_CPPCHECK} ${CONAN_BIN_DIRS_CPPCHECK_RELEASE} 
-    $ENV{PATH} $ENV{CPPCHECK_DIR})
-
-if(NOT CPPCHECK_COMMAND)
-  message(SEND_ERROR
-    " ERROR: Could not find cppcheck.
-    Having cppcheck is a mandatory requirement.
-    CMake will not generate the project without it.
-    Add its location to the environments variables PATH or CPPCHECK_DIR.
-	However, this should normally be supplied by conan!")
-else()
-  message(STATUS "Use cppcheck from: ${CPPCHECK_COMMAND}")
-endif()
-
-set(CPPCHECK_ARGUMENTS --enable=warning,performance,portability,missingInclude,style --suppress=missingIncludeSystem --error-exitcode=1 --verbose)
-if(MSVC)
-  list(APPEND CPPCHECK_ARGUMENTS --template=vs)
-elseif(CLANG)
-  list(APPEND CPPCHECK_ARGUMENTS --template=clang)
-elseif(GCC)
-  list(APPEND CPPCHECK_ARGUMENTS --template=gcc)
-endif()
-
-function(ADD_TEST_CPPCHECK)
-  set(options)
-  set(oneValueArgs NAME)
-  set(multiValueArgs SOURCES INCLUDE_DIRECTORIES)
-  cmake_parse_arguments(ARGS
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-    set(INCLUDE_DIRECTORIES "")
-    foreach(INCLUDE_DIRECTORY ${ARGS_INCLUDE_DIRECTORIES})
-      set(INCLUDE_DIRECTORIES ${INCLUDE_DIRECTORIES};-I;${INCLUDE_DIRECTORY})
-    endforeach(INCLUDE_DIRECTORY ${ARGS_INCLUDE_DIRECTORIES})
-
-  add_test(NAME "${ARGS_NAME}"
-    COMMAND "${CPPCHECK_COMMAND}" ${CPPCHECK_ARGUMENTS} ${ARGS_SOURCES} ${INCLUDE_DIRECTORIES})
-  set_tests_properties(${ARGS_NAME} PROPERTIES TIMEOUT 20.0)
-endfunction()
diff --git a/cmake/cpplint.cmake b/cmake/cpplint.cmake
deleted file mode 100644
index d0b9cef796b481c8f4ca425d681c0209c187a0b9..0000000000000000000000000000000000000000
--- a/cmake/cpplint.cmake
+++ /dev/null
@@ -1,81 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-
-find_package(PythonInterp 2.7 REQUIRED)
-if(NOT PYTHON_EXECUTABLE)
-  message(SEND_ERROR
-    " ERROR: Could not find any python interpreter.
-        Having a python interpreter is a mandatory requirement for cpplint.
-        CMake will not generate the project without it. ")
-endif()
-if(NOT (PYTHON_VERSION_MAJOR EQUAL 2 AND PYTHON_VERSION_MINOR EQUAL 7))
-  message(SEND_ERROR
-    " ERROR: Did not find python 2.7.
-        Having python 2.7 is a mandatory requirement for cpplint.
-        CMake will not generate the project without it. ")  
-endif()
-
-set(CONAN_CPPLINT_DIR)
-if(TARGET CONAN_PKG::cpplint)
-  get_property(CONAN_CPPLINT_DIR
-    TARGET CONAN_PKG::cpplint
-    PROPERTY INTERFACE_INCLUDE_DIRECTORIES
-    )
-else()
-  message("No cpplint found through conan, trying to find an installed one on the system")
-endif()
-set(CPPLINT_COMMAND NOTFOUND)
-#this find_file also uses the direct CONAN_INCLUDE_DIRS to avoid generator expressions, furthermore the release one for multi config
-find_file(CPPLINT_COMMAND cpplint.py
-	PATHS ${CONAN_CPPLINT_DIR} ${CONAN_INCLUDE_DIRS_CPPLINT} ${CONAN_INCLUDE_DIRS_CPPLINT_RELEASE}
-	$ENV{PATH} $ENV{CPPLINT_DIR}
-  )
-if(NOT CPPLINT_COMMAND)
-  message(SEND_ERROR
-    " ERROR: Could not find cpplint.py.
-        Having cpplint.py is a mandatory requirement.
-        CMake will not generate the project without it.
-        Add its location to the environments variables PATH or CPPLINT_DIR.")
-else()
-  message(STATUS "Using cpplint from: ${CPPLINT_COMMAND}")
-endif()
-
-function(ADD_TEST_CPPLINT)
-  set(options )
-  set(oneValueArgs NAME)
-  set(multiValueArgs )
-  cmake_parse_arguments(ADD_TEST_CPPLINT
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN} )
-  
-  set(CPPLINT_ARGS "--quiet")
-  if(MSVC)
-    set(CPPLINT_OUTPUT "--output=vs7")
-  else()
-    set(CPPLINT_OUTPUT "")
-  endif()
-
-  add_test(NAME "${ADD_TEST_CPPLINT_NAME}"
-    COMMAND ${PYTHON_EXECUTABLE} ${CPPLINT_COMMAND} ${CPPLINT_OUTPUT} ${CPPLINT_ARGS}
-    ${ADD_TEST_CPPLINT_UNPARSED_ARGUMENTS}
-    )
-  set_tests_properties(${ADD_TEST_CPPLINT_NAME} PROPERTIES TIMEOUT 20.0)
-endfunction()
diff --git a/cmake/get_target_include_directories.cmake b/cmake/get_target_include_directories.cmake
deleted file mode 100644
index 26e71599431b4111b94e6640ab9a8dd6cc2d043b..0000000000000000000000000000000000000000
--- a/cmake/get_target_include_directories.cmake
+++ /dev/null
@@ -1,51 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-function(get_target_include_directories VAR)
-  set(options)
-  set(oneValueArgs TARGET)
-  set(multiValueArgs)
-  cmake_parse_arguments(ARGS
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-  if (TARGET ${ARGS_TARGET})
-    # message("${ARGS_TARGET}")
-    get_target_property(IS_IMPORTED ${ARGS_TARGET} IMPORTED)
-    # message("imported: ${IS_IMPORTED}")
-    if (${IS_IMPORTED})
-      # get_target_property(INCLUDE_DIRECTORIES ${ARGS_TARGET} INTERFACE_INCLUDE_DIRECTORIES)
-    else (${IS_IMPORTED})
-      get_target_property(INCLUDE_DIRECTORIES ${ARGS_TARGET} INCLUDE_DIRECTORIES)
-      get_target_property(LINK_LIBRARIES ${ARGS_TARGET} LINK_LIBRARIES)
-
-      foreach(LIB ${LINK_LIBRARIES})
-        get_target_include_directories(LIB_INCLUDE_DIRECTORIES TARGET ${LIB})
-        set(INCLUDE_DIRECTORIES ${INCLUDE_DIRECTORIES} ${LIB_INCLUDE_DIRECTORIES})
-      endforeach(LIB ${LINK_LIBRARIES})
-    endif(${IS_IMPORTED})
-
-  else (TARGET ${ARGS_TARGET})
-    set(INCLUDE_DIRECTORIES "")
-  endif (TARGET ${ARGS_TARGET})
-
-  set(${VAR} ${INCLUDE_DIRECTORIES} PARENT_SCOPE)
-
-endfunction(get_target_include_directories)
\ No newline at end of file
diff --git a/cmake/nesci-config.cmake b/cmake/nesci-config.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..e58fcae9a964ae32e634d633799c0712f1b96d1b
--- /dev/null
+++ b/cmake/nesci-config.cmake
@@ -0,0 +1,46 @@
+#-------------------------------------------------------------------------------
+# nesci -- neuronal simulator conan interface
+#
+# Copyright (c) 2018 RWTH Aachen University, Germany,
+# Virtual Reality & Immersive Visualization Group.
+#-------------------------------------------------------------------------------
+#                                  License
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#-------------------------------------------------------------------------------
+
+get_filename_component(CURRENT_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+list(APPEND CMAKE_MODULE_PATH ${CURRENT_DIR})
+find_package(Conduit REQUIRED)
+
+include(${CURRENT_DIR}/nesciTargets.cmake)
+
+foreach(COMPONENT ${nesci_FIND_COMPONENTS})
+    set(COMPONENT_CONFIG_FILE ${CURRENT_DIR}/${COMPONENT}Targets.cmake)
+
+    if(EXISTS ${COMPONENT_CONFIG_FILE})
+        include(${COMPONENT_CONFIG_FILE})
+        if(NOT nesci_FIND_QUIETLY)
+            message(STATUS "Found nesci component: ${COMPONENT}")
+        endif(NOT nesci_FIND_QUIETLY)
+    else()
+        if(nesci_FIND_REQUIRED_${COMPONENT})
+            set(nesci_FOUND FALSE)
+        endif()
+
+        if(NOT nesci_FIND_QUIETLY)
+            message(SEND_ERROR "Cannot find nesci component: ${COMPONENT}")
+        endif(NOT nesci_FIND_QUIETLY)
+    endif()
+endforeach()
diff --git a/cmake/py.test.cmake b/cmake/py.test.cmake
index c19803402cb3ad0dff99a43fa8ccf68955257332..bfa46e19236b63aa9fa84313a928b4133eb40b13 100644
--- a/cmake/py.test.cmake
+++ b/cmake/py.test.cmake
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
diff --git a/cmake/python_module.cmake b/cmake/python_module.cmake
index 8ba9503c8b8290b629a7861760a782016242aed4..8249e4cc5ced73c1d2ab5b98a8953cfd8bd5d634 100644
--- a/cmake/python_module.cmake
+++ b/cmake/python_module.cmake
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
diff --git a/cmake/rwthvr.cmake b/cmake/rwthvr.cmake
deleted file mode 100644
index 113d192110378320ccb9a85814e3e9736d28d4ce..0000000000000000000000000000000000000000
--- a/cmake/rwthvr.cmake
+++ /dev/null
@@ -1,90 +0,0 @@
-#-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-#-------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-
-include(WarningLevels)
-
-macro(RWTHVR_ADD_LIBRARY)
-  set(options)
-  set(oneValueArgs NAME SUPPRESS_WARNINGS_HEADER)
-  set(multiValueArgs SOURCES HEADERS)
-  cmake_parse_arguments(RWTHVR_ADD_LIBRARY_
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  
-  add_library(${RWTHVR_ADD_LIBRARY__NAME}
-    ${RWTHVR_ADD_LIBRARY__SOURCES}
-    ${RWTHVR_ADD_LIBRARY__HEADERS})
-   
-  get_property(RWTHVR_ALL_SOURCES GLOBAL PROPERTY RWTHVR_ALL_SOURCES)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_SOURCES 
-    ${RWTHVR_ALL_SOURCES}
-    ${RWTHVR_ADD_LIBRARY__SOURCES}
-  )
-
-  get_property(RWTHVR_ALL_HEADERS GLOBAL PROPERTY RWTHVR_ALL_HEADERS)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_HEADERS 
-    ${RWTHVR_ALL_HEADERS}
-    ${RWTHVR_ADD_LIBRARY__HEADERS}
-  )
-
-  get_property(RWTHVR_ALL_TARGETS GLOBAL PROPERTY RWTHVR_ALL_TARGETS)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_TARGETS 
-    ${RWTHVR_ALL_TARGETS}
-    ${RWTHVR_ADD_LIBRARY__NAME}
-  )
-
-  set_warning_levels_rwth(${RWTHVR_ADD_LIBRARY__NAME}
-    SUPPRESS_WARNINGS_HEADER ${RWTHVR_ADD_LIBRARY__SUPPRESS_WARNINGS_HEADER}
-  )
-endmacro()
-
-macro(RWTHVR_ADD_EXECUTABLE)
-  set(options)
-  set(oneValueArgs NAME SUPPRESS_WARNINGS_HEADER)
-  set(multiValueArgs SOURCES HEADERS)
-  cmake_parse_arguments(RWTHVR_ADD_EXECUTABLE_
-    "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-  add_executable(${RWTHVR_ADD_EXECUTABLE__NAME}
-    ${RWTHVR_ADD_EXECUTABLE__SOURCES}
-    ${RWTHVR_ADD_EXECUTABLE__HEADERS})
-    
-  get_property(RWTHVR_ALL_SOURCES GLOBAL PROPERTY RWTHVR_ALL_SOURCES)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_SOURCES 
-    ${RWTHVR_ALL_SOURCES}
-    ${RWTHVR_ADD_EXECUTABLE__SOURCES}
-  )
-
-  get_property(RWTHVR_ALL_HEADERS GLOBAL PROPERTY RWTHVR_ALL_HEADERS)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_HEADERS 
-    ${RWTHVR_ALL_HEADERS}
-    ${RWTHVR_ADD_EXECUTABLE__HEADERS}
-  )
-
-  get_property(RWTHVR_ALL_TARGETS GLOBAL PROPERTY RWTHVR_ALL_TARGETS)
-  set_property(GLOBAL PROPERTY RWTHVR_ALL_TARGETS 
-    ${RWTHVR_ALL_TARGETS}
-    ${RWTHVR_ADD_EXECUTABLE__NAME}
-  )
-
-  set_warning_levels_rwth(${RWTHVR_ADD_EXECUTABLE__NAME}
-    SUPPRESS_WARNINGS_HEADER ${RWTHVR_ADD_EXECUTABLE__SUPPRESS_WARNINGS_HEADER}
-  )
-endmacro()
diff --git a/cmake/suppress_warnings.hpp.in b/cmake/suppress_warnings.hpp.in
deleted file mode 100644
index 324811bdfa5dfa660ceb15528e08bce9ff0cedb0..0000000000000000000000000000000000000000
--- a/cmake/suppress_warnings.hpp.in
+++ /dev/null
@@ -1,79 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef NESCI_SUPPRESS_WARNINGS_
-#define NESCI_SUPPRESS_WARNINGS_
-
-// clang-format off
-
-#if defined __clang__
-#define SUPPRESS_WARNINGS_BEGIN                                           \
-  _Pragma("clang diagnostic push")                                        \
-  _Pragma("clang diagnostic ignored \"-Wall\"")                           \
-  _Pragma("clang diagnostic ignored \"-Wextra\"")                         \
-  _Pragma("clang diagnostic ignored \"-Wreserved-id-macro\"")             \
-  _Pragma("clang diagnostic ignored \"-Wimplicit-fallthrough\"")          \
-  _Pragma("clang diagnostic ignored \"-Wdocumentation\"")                 \
-  _Pragma("clang diagnostic ignored \"-Wdocumentation-unknown-command\"") \
-  _Pragma("clang diagnostic ignored \"-Wpadded\"")                        \
-  _Pragma("clang diagnostic ignored \"-Wpessimizing-move\"")              \
-  _Pragma("clang diagnostic ignored \"-Wunused-parameter\"")              \
-  _Pragma("clang diagnostic ignored \"-Wold-style-cast\"")                \
-  _Pragma("clang diagnostic ignored \"-Wsign-conversion\"")               \
-  _Pragma("clang diagnostic ignored \"-Wnewline-eof\"")                   \
-  _Pragma("clang diagnostic ignored \"-Wmissing-prototypes\"")            \
-  _Pragma("clang diagnostic ignored \"-Wundefined-func-template\"")       \
-  _Pragma("clang diagnostic ignored \"-Wnon-virtual-dtor\"")              \
-  _Pragma("clang diagnostic ignored \"-Wundefined-func-template\"")       \
-    _Pragma("clang diagnostic ignored \"-Wextra-semi\"")
-#define SUPPRESS_WARNINGS_BEGIN_PADDED \
-  _Pragma("clang diagnostic push")                                        \
-  _Pragma("clang diagnostic ignored \"-Wpadded\"")
-#define SUPPRESS_WARNINGS_END _Pragma("clang diagnostic pop")
-
-#elif defined _MSC_VER
-#define SUPPRESS_WARNINGS_BEGIN __pragma(warning(push, 0));
-#define SUPPRESS_WARNINGS_BEGIN_PADDED  __pragma(warning(push));
-#define SUPPRESS_WARNINGS_END __pragma(warning(pop));
-
-#elif defined __GNUC__
-#if __GNUC__ >= 7
-  #define SUPPRESS_WARNINGS_GCC7_AND_ABOVE \
-    _Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"")
-#else
-  #define SUPPRESS_WARNINGS_GCC7_AND_ABOVE
-#endif
-#define SUPPRESS_WARNINGS_BEGIN                                           \
-  _Pragma("GCC diagnostic push")                                          \
-  SUPPRESS_WARNINGS_GCC7_AND_ABOVE                                        \
-  _Pragma("GCC diagnostic ignored \"-Wall\"")                             \
-  _Pragma("GCC diagnostic ignored \"-Wextra\"")                           \
-  _Pragma("GCC diagnostic ignored \"-Wpadded\"")
-#define SUPPRESS_WARNINGS_BEGIN_PADDED                                    \
-  _Pragma("GCC diagnostic push")                                          \
-  _Pragma("GCC diagnostic ignored \"-Wpadded\"")
-#define SUPPRESS_WARNINGS_END _Pragma("GCC diagnostic pop")
-
-#endif
-
-// clang-format on
-
-#endif // NESCI_SUPPRESS_WARNINGS_
diff --git a/conanfile.py b/conanfile.py
deleted file mode 100644
index b1e11a2640f12696ce1756717c8298e417c34612..0000000000000000000000000000000000000000
--- a/conanfile.py
+++ /dev/null
@@ -1,90 +0,0 @@
-# -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-# -------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# -------------------------------------------------------------------------------
-
-from conans import ConanFile, CMake
-
-
-class nesci(ConanFile):
-    name = "nesci"
-    version = "18.07"
-    license = "Apache License, Version 2.0"
-    description = """nesci -- neural simulator conan interface"""
-    settings = "os", "compiler", "build_type", "arch"
-    exports_sources = "*"
-    url = "https://devhub.vr.rwth-aachen.de/VR-Group/nesci"
-
-    requires = (("catch/1.12.0@RWTH-VR/thirdparty"),
-                ("cpplint/e8ffd7c@RWTH-VR/thirdparty"),
-                ("cppcheck/1.84@RWTH-VR/thirdparty"),
-                ("conduit/0.3.1@RWTH-VR/thirdparty"),
-                ("boost_python/1.66.0@bincrafters/testing"))
-    generators = "cmake"
-
-    def configure(self):
-        self.options["boost"].header_only = False
-        self.options["boost"].shared = True
-        self.options["boost_python"].python_version = 2.7
-        if (self.settings.os == "Windows"):
-            self.options["boost_python"].shared = False
-        else:
-            self.options["boost_python"].shared = True
-        self.options["conduit"].shared = False
-
-    def imports(self):
-        self.copy("*.dll", dst="consumer/tests/Debug", src="bin")
-        self.copy("*.dll", dst="consumer/tests/Release", src="bin")
-        self.copy("*.dll", dst="consumer/tests", src="bin")
-        self.copy("*.so", dst="consumer/tests", src="lib")
-        self.copy("*.dylib", dst="consumer/tests", src="lib")
-
-        self.copy("*.dll", dst="layout/tests/Debug", src="bin")
-        self.copy("*.dll", dst="layout/tests/Release", src="bin")
-        self.copy("*.dll", dst="layout/tests", src="bin")
-        self.copy("*.so", dst="layout/tests", src="lib")
-        self.copy("*.dylib", dst="layout/tests", src="lib")
-
-        self.copy("*.dll", dst="producer/tests/Debug", src="bin")
-        self.copy("*.dll", dst="producer/tests/Release", src="bin")
-        self.copy("*.dll", dst="producer/tests", src="bin")
-        self.copy("*.so", dst="producer/tests", src="lib")
-        self.copy("*.dylib", dst="producer/tests", src="lib")
-
-    def build(self):
-        cmake = CMake(self)
-        cmake.configure(source_folder='.')
-        cmake.build()
-
-    def package(self):
-        self.copy("*.hpp", dst="include", src="layout/include")
-        self.copy("*.hpp", dst="include", src="producer/include")
-        self.copy("*.hpp", dst="include", src="consumer/include")
-        self.copy("*.hpp", dst="include", src="build/layout/include")
-        self.copy("*.hpp", dst="include", src="build/producer/include")
-        self.copy("*.hpp", dst="include", src="build/consumer/include")
-        self.copy("*.lib", dst="lib", keep_path=False)
-        self.copy("*.dll", dst="bin", keep_path=False)
-        self.copy("*.so*", dst="lib", keep_path=False)
-        self.copy("*.a", dst="lib", keep_path=False)
-        self.copy("*.dylib", dst="lib", keep_path=False, symlinks=True)
-
-    def package_info(self):
-        self.cpp_info.libs = ["nesci_consumer",
-                              "nesci_producer", "nesci_layout"]
diff --git a/consumer/CMakeLists.txt b/consumer/CMakeLists.txt
index c2dd360640bc8ec9511baac72b3bb0f9c68cc232..54e27659fefef194249537af3584dff783c3a484 100644
--- a/consumer/CMakeLists.txt
+++ b/consumer/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,31 +19,23 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB CONSUMER_SOURCES src/*.cpp)
-file(GLOB CONSUMER_HEADERS include/nesci/consumer/*.hpp)
+add_target(
+  LIBRARY
+  NAME consumer
+  SOURCE_GLOB src/*.cpp
+  HEADER_GLOB include/nesci/consumer/*.hpp
+  DEPENDENCIES
+    PUBLIC conduit
+    PUBLIC nesci::nesci
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-rwthvr_add_library(NAME nesci_consumer
-  SOURCES ${CONSUMER_SOURCES}
-  HEADERS ${CONSUMER_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/consumer/suppress_warnings.hpp"
-  )
-generate_export_header(nesci_consumer
-  EXPORT_FILE_NAME
-  "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/consumer/export.hpp"
-  )
-  
-target_include_directories(nesci_consumer
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-
-target_link_libraries(nesci_consumer
-  PUBLIC nesci_layout
-  PUBLIC ${CONAN_OR_CMAKE_conduit}
-  )
-
-target_compile_options(nesci_consumer
-  PRIVATE -fPIC
+if (NOT MSVC)
+  target_compile_options(consumer
+    PRIVATE -fPIC
   )
+endif (NOT MSVC)
 
-add_subdirectory(tests)
+if (ENABLE_TESTS)
+  add_subdirectory(tests)
+endif (ENABLE_TESTS)
diff --git a/consumer/include/nesci/consumer/arbor_multimeter.hpp b/consumer/include/nesci/consumer/arbor_multimeter.hpp
deleted file mode 100644
index 7ebaba2d090acdbac31b76a8d35b5007d574a272..0000000000000000000000000000000000000000
--- a/consumer/include/nesci/consumer/arbor_multimeter.hpp
+++ /dev/null
@@ -1,58 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_ARBOR_MULTIMETER_HPP_
-#define CONSUMER_INCLUDE_NESCI_CONSUMER_ARBOR_MULTIMETER_HPP_
-
-#include <string>
-#include <vector>
-
-#include "nesci/consumer/multimeter.hpp"
-#include "nesci/layout/multimeter.hpp"
-
-namespace nesci {
-namespace consumer {
-
-class ArborMultimeter : public nesci::consumer::Multimeter {
- public:
-  ArborMultimeter() = delete;
-  explicit ArborMultimeter(const std::string& name);
-  ArborMultimeter(const ArborMultimeter&) = default;
-  ArborMultimeter(ArborMultimeter&&) = default;
-  ~ArborMultimeter() = default;
-
-  ArborMultimeter& operator=(const ArborMultimeter&) = default;
-  ArborMultimeter& operator=(ArborMultimeter&&) = default;
-
-  std::vector<double> GetTimestepData(const std::string& time,
-                                      const std::string& attribute) const;
-
-  std::vector<double> GetTimeSeriesData(const std::string& attribute,
-                                        const std::string& neuron_id) const;
-
-  double GetDatum(const std::string& time, const std::string& attribute,
-                  const std::string& neuron_id) const;
-};
-
-}  // namespace consumer
-}  // namespace nesci
-
-#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_ARBOR_MULTIMETER_HPP_
diff --git a/consumer/include/nesci/consumer/consumer.hpp b/consumer/include/nesci/consumer/consumer.hpp
index 81adab015b0368167dae664fed975471d28de732..195adc3b86316e3a7b3492992532197954d492f2 100644
--- a/consumer/include/nesci/consumer/consumer.hpp
+++ b/consumer/include/nesci/consumer/consumer.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -27,6 +27,8 @@ namespace consumer {
 
 void Greet();
 
+class Consumer {};
+
 }  // namespace consumer
 }  // namespace nesci
 
diff --git a/consumer/include/nesci/consumer/device.hpp b/consumer/include/nesci/consumer/device_data_view.hpp
similarity index 57%
rename from consumer/include/nesci/consumer/device.hpp
rename to consumer/include/nesci/consumer/device_data_view.hpp
index f3690fc0026feabd581532355681f05ee822f64d..ec0eac30c2267fff9e7707cfb057100019321eca 100644
--- a/consumer/include/nesci/consumer/device.hpp
+++ b/consumer/include/nesci/consumer/device_data_view.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -19,50 +19,50 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_HPP_
-#define CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_HPP_
+#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_DATA_VIEW_HPP_
+#define CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_DATA_VIEW_HPP_
 
 #include <string>
 #include <vector>
 
+#include "conduit/conduit_data_array.hpp"
 #include "conduit/conduit_node.hpp"
 
-#include "nesci/layout/device.hpp"
+#include "nesci/data_type.hpp"
+#include "nesci/device_layout.hpp"
+
+namespace conduit {
+
+extern template class DataArray<uint64>;
+
+}  // namespace conduit
 
 namespace nesci {
 namespace consumer {
 
-class Device {
+class DeviceDataView {
  public:
-  Device() = delete;
-  explicit Device(const std::string& name);
-  Device(const Device&) = default;
-  Device(Device&&) = default;
-  virtual ~Device() = default;
-
-  Device& operator=(const Device&) = default;
-  Device& operator=(Device&&) = default;
-
-  std::vector<std::string> GetTimesteps() const;
+  DeviceDataView() = delete;
+  explicit inline DeviceDataView(const conduit::Node* node) : node_(node) {}
+  DeviceDataView(const DeviceDataView&) = default;
+  DeviceDataView(DeviceDataView&&) = default;
+  virtual ~DeviceDataView() = default;
 
-  void SetNode(const conduit::Node* node) { node_ = node; }
+  DeviceDataView& operator=(const DeviceDataView&) = default;
+  DeviceDataView& operator=(DeviceDataView&&) = default;
 
- protected:
+  bool HasName() const;
   std::string GetName() const;
+  DataType GetType() const;
 
-  std::vector<std::string> GetChildNames(const layout::Device& path) const;
-
-  double GetValue(const layout::Device& path) const;
-  std::vector<std::uint64_t> GetUint64Values(const layout::Device& path) const;
+ protected:
+  const conduit::Node* FetchPath(const std::string& path) const;
 
  private:
-  const conduit::Node* GetNode(const layout::Device& path) const;
-
   const conduit::Node* node_{nullptr};
-  std::string name_{""};
 };
 
 }  // namespace consumer
 }  // namespace nesci
 
-#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_HPP_
+#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_DEVICE_DATA_VIEW_HPP_
diff --git a/consumer/include/nesci/consumer/multimeter.hpp b/consumer/include/nesci/consumer/multimeter.hpp
deleted file mode 100644
index 46df6f9b16dce13c632c67f5fa6f8f40c1a663b3..0000000000000000000000000000000000000000
--- a/consumer/include/nesci/consumer/multimeter.hpp
+++ /dev/null
@@ -1,52 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_MULTIMETER_HPP_
-#define CONSUMER_INCLUDE_NESCI_CONSUMER_MULTIMETER_HPP_
-
-#include <string>
-#include <vector>
-
-#include "nesci/consumer/device.hpp"
-
-namespace nesci {
-namespace consumer {
-
-class Multimeter : public nesci::consumer::Device {
- public:
-  Multimeter() = delete;
-  explicit Multimeter(const std::string& name);
-  Multimeter(const Multimeter&) = default;
-  Multimeter(Multimeter&&) = default;
-  ~Multimeter() = default;
-
-  Multimeter& operator=(const Multimeter&) = default;
-  Multimeter& operator=(Multimeter&&) = default;
-
-  std::vector<std::string> GetAttributes(const std::string& time) const;
-  std::vector<std::string> GetNeuronIds(const std::string& time,
-                                        const std::string& attribute) const;
-};
-
-}  // namespace consumer
-}  // namespace nesci
-
-#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_MULTIMETER_HPP_
diff --git a/consumer/include/nesci/consumer/nest_multimeter.hpp b/consumer/include/nesci/consumer/nest_multimeter.hpp
deleted file mode 100644
index 5c6b014164bc864e1f2d321ba8b3062358ea96f1..0000000000000000000000000000000000000000
--- a/consumer/include/nesci/consumer/nest_multimeter.hpp
+++ /dev/null
@@ -1,60 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_HPP_
-#define CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_HPP_
-
-#include <string>
-#include <vector>
-
-#include "conduit/conduit_node.hpp"
-
-#include "nesci/consumer/multimeter.hpp"
-#include "nesci/layout/multimeter.hpp"
-
-namespace nesci {
-namespace consumer {
-
-class NestMultimeter : public consumer::Multimeter {
- public:
-  NestMultimeter() = delete;
-  explicit NestMultimeter(const std::string& name);
-  NestMultimeter(const NestMultimeter&) = default;
-  NestMultimeter(NestMultimeter&&) = default;
-  ~NestMultimeter() = default;
-
-  NestMultimeter& operator=(const NestMultimeter&) = default;
-  NestMultimeter& operator=(NestMultimeter&&) = default;
-
-  std::vector<double> GetTimestepData(const std::string& time,
-                                      const std::string& attribute) const;
-
-  std::vector<double> GetTimeSeriesData(const std::string& attribute,
-                                        const std::string& neuron_id) const;
-
-  double GetDatum(const std::string& time, const std::string& attribute,
-                  const std::string& neuron_id) const;
-};
-
-}  // namespace consumer
-}  // namespace nesci
-
-#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_HPP_
diff --git a/consumer/include/nesci/consumer/nest_multimeter_data_view.hpp b/consumer/include/nesci/consumer/nest_multimeter_data_view.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..361a5e1e6570cdb7e266305b7739ba6e1014b6ea
--- /dev/null
+++ b/consumer/include/nesci/consumer/nest_multimeter_data_view.hpp
@@ -0,0 +1,58 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualisation Group.
+//------------------------------------------------------------------------------
+//                                 License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_DATA_VIEW_HPP_
+#define CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_DATA_VIEW_HPP_
+
+#include <string>
+#include <vector>
+
+#include "nesci/consumer/device_data_view.hpp"
+
+namespace nesci {
+namespace consumer {
+
+class NestMultimeterDataView : public DeviceDataView {
+ public:
+  NestMultimeterDataView() = delete;
+  explicit NestMultimeterDataView(const conduit::Node* node);
+  NestMultimeterDataView(const NestMultimeterDataView&) = default;
+  NestMultimeterDataView(NestMultimeterDataView&&) = default;
+  ~NestMultimeterDataView() = default;
+
+  NestMultimeterDataView& operator=(const NestMultimeterDataView&) = default;
+  NestMultimeterDataView& operator=(NestMultimeterDataView&&) = default;
+
+  bool IsValid() const;
+  double GetTimestep() const;
+  conduit::uint64_array GetNeuronIds() const;
+  std::vector<std::string> GetIntegerAttributeNames() const;
+  std::vector<std::string> GetFloatingPointAttributeNames() const;
+  conduit::int64_array GetIntegerAttributeValues(
+      const std::string& attribute) const;
+  conduit::float64_array GetFloatingPointAttributeValues(
+      const std::string& attribute) const;
+};
+
+}  // namespace consumer
+}  // namespace nesci
+
+#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_NEST_MULTIMETER_DATA_VIEW_HPP_
diff --git a/consumer/include/nesci/consumer/spike_detector.hpp b/consumer/include/nesci/consumer/spike_detector_data_view.hpp
similarity index 59%
rename from consumer/include/nesci/consumer/spike_detector.hpp
rename to consumer/include/nesci/consumer/spike_detector_data_view.hpp
index d13dc3c5e537ece9a08c1e2bbe0ef148897c8854..56d47c69b6b6060ad9f351e1272dc39054a786e5 100644
--- a/consumer/include/nesci/consumer/spike_detector.hpp
+++ b/consumer/include/nesci/consumer/spike_detector_data_view.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -19,28 +19,30 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_HPP_
-#define CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_HPP_
+#ifndef CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_DATA_VIEW_HPP_
+#define CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_DATA_VIEW_HPP_
 
 #include <string>
 #include <vector>
-#include "nesci/consumer/device.hpp"
+#include "nesci/consumer/device_data_view.hpp"
 
 namespace nesci {
 namespace consumer {
 
-class SpikeDetector : public nesci::consumer::Device {
+class SpikeDetectorDataView : public DeviceDataView {
  public:
-  SpikeDetector() = delete;
-  explicit SpikeDetector(const std::string& name);
-  SpikeDetector(const SpikeDetector&) = default;
-  SpikeDetector(SpikeDetector&&) = default;
-  ~SpikeDetector() override = default;
+  SpikeDetectorDataView() = delete;
+  explicit SpikeDetectorDataView(const conduit::Node* node);
+  SpikeDetectorDataView(const SpikeDetectorDataView&) = default;
+  SpikeDetectorDataView(SpikeDetectorDataView&&) = default;
+  ~SpikeDetectorDataView() override = default;
 
-  std::vector<std::uint64_t> GetNeuronIds(const std::string& time);
+  bool IsValid() const;
+  conduit::float64_array GetTimesteps() const;
+  conduit::uint64_array GetNeuronIds() const;
 };
 
 }  // namespace consumer
 }  // namespace nesci
 
-#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_HPP_
+#endif  // CONSUMER_INCLUDE_NESCI_CONSUMER_SPIKE_DETECTOR_DATA_VIEW_HPP_
diff --git a/consumer/src/arbor_multimeter.cpp b/consumer/src/arbor_multimeter.cpp
deleted file mode 100644
index fb333f0d0b522b82b8b5ca99409444dbe64f9109..0000000000000000000000000000000000000000
--- a/consumer/src/arbor_multimeter.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-//------------------------------------------------------------------------------
-// nest in situ vis
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/consumer/arbor_multimeter.hpp"
-
-#include <cmath>
-
-#include <string>
-#include <vector>
-
-#include "nesci/layout/multimeter.hpp"
-
-namespace nesci {
-namespace consumer {
-
-ArborMultimeter::ArborMultimeter(const std::string& name) : Multimeter(name) {}
-
-std::vector<double> ArborMultimeter::GetTimestepData(
-    const std::string& time, const std::string& attribute) const {
-  std::vector<double> retval;
-  const auto neuron_ids{GetNeuronIds(time, attribute)};
-  retval.reserve(neuron_ids.size());
-
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  path.SetAttribute(attribute);
-
-  for (auto curr_neuron_id : neuron_ids) {
-    path.SetNeuronId(curr_neuron_id);
-    retval.push_back(GetValue(path));
-  }
-  return retval;
-}
-
-std::vector<double> ArborMultimeter::GetTimeSeriesData(
-    const std::string& attribute, const std::string& neuron_id) const {
-  std::vector<double> retval;
-  const auto timesteps = GetTimesteps();
-  retval.reserve(timesteps.size());
-
-  layout::Multimeter path(GetName());
-  path.SetAttribute(attribute);
-  path.SetNeuronId(neuron_id);
-  for (auto time : timesteps) {
-    path.SetTime(time);
-    retval.push_back(GetValue(path));
-  }
-  return retval;
-}
-
-double ArborMultimeter::GetDatum(const std::string& time,
-                                 const std::string& attribute,
-                                 const std::string& neuron_id) const {
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  path.SetAttribute(attribute);
-  path.SetNeuronId(neuron_id);
-  return GetValue(path);
-}
-
-}  // namespace consumer
-}  // namespace nesci
diff --git a/consumer/src/consumer.cpp b/consumer/src/consumer.cpp
index 0e05d0b7c62d0bf3fb465705f65c92f94c3328a8..157489b268bcbc594c54b7d1163c7e1d3f394c4a 100644
--- a/consumer/src/consumer.cpp
+++ b/consumer/src/consumer.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
diff --git a/consumer/src/device.cpp b/consumer/src/device.cpp
deleted file mode 100644
index 616753d7c02c1149a2904ea123116e634602afa4..0000000000000000000000000000000000000000
--- a/consumer/src/device.cpp
+++ /dev/null
@@ -1,88 +0,0 @@
-//------------------------------------------------------------------------------
-// nest in situ vis
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/consumer/device.hpp"
-
-#include <cmath>
-#include <cstdlib>
-
-#include <algorithm>
-#include <iostream>
-#include <string>
-#include <vector>
-
-#include "nesci/layout/device.hpp"
-#include "nesci/layout/utility.hpp"
-
-#include "nesci/layout/suppress_warnings.hpp"
-
-namespace nesci {
-namespace consumer {
-
-Device::Device(const std::string& name) : name_{name} {}
-
-std::vector<std::string> Device::GetTimesteps() const {
-  layout::Device path(name_);
-  std::vector<std::string> retvec;
-  for (auto s : GetChildNames(path)) {
-    retvec.push_back(s);
-  }
-  return retvec;
-}
-
-std::string Device::GetName() const { return name_; }
-
-std::vector<std::string> Device::GetChildNames(
-    const layout::Device& path) const {
-  const conduit::Node* node{GetNode(path)};
-  return (node != nullptr) ? node->child_names() : std::vector<std::string>();
-}
-
-double Device::GetValue(const layout::Device& path) const {
-  const conduit::Node* node{GetNode(path)};
-  return (node != nullptr) ? node->as_double() : std::nan("");
-}
-
-std::vector<std::uint64_t> Device::GetUint64Values(
-    const layout::Device& path) const {
-  const conduit::Node* node{GetNode(path)};
-  if (node != nullptr) {
-    SUPPRESS_WARNINGS_BEGIN
-    const auto data_array = node->as_uint64_array();
-    SUPPRESS_WARNINGS_END
-    return std::vector<std::uint64_t>{
-        &data_array[0], &data_array[0] + data_array.number_of_elements()};
-  } else {
-    return std::vector<std::uint64_t>{};
-  }
-}
-
-const conduit::Node* Device::GetNode(const layout::Device& path) const {
-  const conduit::Node* node{nullptr};
-  try {
-    node = &(node_->fetch_child(path.GetPath()));
-  } catch (...) {
-  }
-  return node;
-}
-
-}  // namespace consumer
-}  // namespace nesci
diff --git a/consumer/src/device_data_view.cpp b/consumer/src/device_data_view.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3246aa0ecefde898eaac500b8b981b8d8ffc1ff1
--- /dev/null
+++ b/consumer/src/device_data_view.cpp
@@ -0,0 +1,82 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualisation Group.
+//------------------------------------------------------------------------------
+//                                 License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#include "nesci/consumer/device_data_view.hpp"
+
+#include <cmath>
+#include <cstdlib>
+
+#include <algorithm>
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "nesci/device_layout.hpp"
+#include "nesci/suppress_warnings.hpp"
+
+namespace nesci {
+namespace consumer {
+
+namespace device_layout = nesci::layout::device;
+
+bool DeviceDataView::HasName() const {
+  return node_ != nullptr && node_->has_path(device_layout::GetNamePath());
+}
+
+std::string DeviceDataView::GetName() const {
+  if (node_ == nullptr) {
+    return "";
+  }
+
+  auto name_node = node_->fetch_ptr(device_layout::GetNamePath());
+  if (name_node != nullptr) {
+    return name_node->as_string();
+  } else {
+    return "";
+  }
+}
+
+DataType DeviceDataView::GetType() const {
+  if (node_ == nullptr) {
+    return DataType::OTHER;
+  }
+
+  auto name_node = node_->fetch_ptr(device_layout::GetTypePath());
+  if (name_node != nullptr) {
+    const auto data_type = static_cast<DataType>(name_node->as_uint64());
+    switch (data_type) {
+      case DataType::SPIKE_DETECTOR:
+      case DataType::NEST_MULTIMETER:
+      case DataType::OTHER:
+        return data_type;
+    }
+    return DataType::OTHER;
+  } else {
+    return DataType::OTHER;
+  }
+}
+
+const conduit::Node* DeviceDataView::FetchPath(const std::string& path) const {
+  return node_ ? node_->fetch_ptr(path) : nullptr;
+}
+
+}  // namespace consumer
+}  // namespace nesci
diff --git a/consumer/src/nest_multimeter.cpp b/consumer/src/nest_multimeter.cpp
deleted file mode 100644
index ef6ccbb8732bc66e22603105fbe3ab081ff79180..0000000000000000000000000000000000000000
--- a/consumer/src/nest_multimeter.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-//------------------------------------------------------------------------------
-// nest in situ vis
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/consumer/nest_multimeter.hpp"
-
-#include <cmath>
-
-#include <string>
-#include <vector>
-
-#include "nesci/layout/multimeter.hpp"
-
-namespace nesci {
-namespace consumer {
-
-NestMultimeter::NestMultimeter(const std::string& name)
-    : consumer::Multimeter{name} {}
-
-std::vector<double> NestMultimeter::GetTimestepData(
-    const std::string& time, const std::string& attribute) const {
-  std::vector<double> retval;
-  const auto neuron_ids{GetNeuronIds(time, attribute)};
-  retval.reserve(neuron_ids.size());
-
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  path.SetAttribute(attribute);
-
-  for (auto curr_neuron_id : neuron_ids) {
-    path.SetNeuronId(curr_neuron_id);
-    retval.push_back(GetValue(path));
-  }
-  return retval;
-}
-
-std::vector<double> NestMultimeter::GetTimeSeriesData(
-    const std::string& attribute, const std::string& neuron_id) const {
-  std::vector<double> retval;
-  const auto timesteps = GetTimesteps();
-  retval.reserve(timesteps.size());
-
-  layout::Multimeter path(GetName());
-  path.SetAttribute(attribute);
-  path.SetNeuronId(neuron_id);
-  for (auto time : timesteps) {
-    path.SetTime(time);
-    retval.push_back(GetValue(path));
-  }
-  return retval;
-}
-
-double NestMultimeter::GetDatum(const std::string& time,
-                                const std::string& attribute,
-                                const std::string& neuron_id) const {
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  path.SetAttribute(attribute);
-  path.SetNeuronId(neuron_id);
-  return GetValue(path);
-}
-
-}  // namespace consumer
-}  // namespace nesci
diff --git a/consumer/src/nest_multimeter_data_view.cpp b/consumer/src/nest_multimeter_data_view.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..8727cd1f1e1af862d79f139e3879d29791f0094c
--- /dev/null
+++ b/consumer/src/nest_multimeter_data_view.cpp
@@ -0,0 +1,102 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualisation Group.
+//------------------------------------------------------------------------------
+//                                 License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#include "nesci/consumer/nest_multimeter_data_view.hpp"
+
+#include <limits>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+#include "nesci/nest_multimeter_layout.hpp"
+
+namespace nesci {
+namespace consumer {
+
+namespace device_layout = nesci::layout::nest_multimeter;
+
+NestMultimeterDataView::NestMultimeterDataView(const conduit::Node* node)
+    : DeviceDataView{node} {}
+
+bool NestMultimeterDataView::IsValid() const {
+  return GetType() == nesci::DataType::NEST_MULTIMETER;
+}
+
+double NestMultimeterDataView::GetTimestep() const {
+  auto data_node = FetchPath(device_layout::GetTimestepPath());
+  return data_node != nullptr ? data_node->as_double()
+                              : std::numeric_limits<double>::quiet_NaN();
+}
+
+conduit::uint64_array NestMultimeterDataView::GetNeuronIds() const {
+  auto data_node = FetchPath(device_layout::GetNeuronIdsPath());
+  return data_node != nullptr ? data_node->as_uint64_array()
+                              : conduit::uint64_array{};
+}
+
+std::vector<std::string>
+NestMultimeterDataView::GetFloatingPointAttributeNames() const {
+  std::vector<std::string> attributes;
+  auto data_node = FetchPath(device_layout::GetAttributePath());
+  if (data_node) {
+    const auto& data_schema = data_node->schema();
+    for (conduit::index_t i = 0; i < data_schema.number_of_children(); ++i) {
+      const auto& child = data_schema.child(i);
+      if (child.dtype().is_float64()) {
+        attributes.push_back(data_schema.child_name(i));
+      }
+    }
+  }
+  return attributes;
+}
+
+conduit::float64_array NestMultimeterDataView::GetFloatingPointAttributeValues(
+    const std::string& attribute) const {
+  auto data_node = FetchPath(device_layout::GetPathForAttribute(attribute));
+  return data_node != nullptr ? data_node->as_float64_array()
+                              : conduit::float64_array{};
+}
+
+std::vector<std::string> NestMultimeterDataView::GetIntegerAttributeNames()
+    const {
+  std::vector<std::string> attributes;
+  auto data_node = FetchPath(device_layout::GetAttributePath());
+  if (data_node) {
+    const auto& data_schema = data_node->schema();
+    for (conduit::index_t i = 0; i < data_schema.number_of_children(); ++i) {
+      const auto& child = data_schema.child(i);
+      if (child.dtype().is_int64()) {
+        attributes.push_back(data_schema.child_name(i));
+      }
+    }
+  }
+  return attributes;
+}
+
+conduit::int64_array NestMultimeterDataView::GetIntegerAttributeValues(
+    const std::string& attribute) const {
+  auto data_node = FetchPath(device_layout::GetPathForAttribute(attribute));
+  return data_node != nullptr ? data_node->as_int64_array()
+                              : conduit::int64_array{};
+}
+
+}  // namespace consumer
+}  // namespace nesci
diff --git a/consumer/src/spike_detector.cpp b/consumer/src/spike_detector.cpp
deleted file mode 100644
index 0f88115069191ea8fa789b551684e6c89301ed38..0000000000000000000000000000000000000000
--- a/consumer/src/spike_detector.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/consumer/spike_detector.hpp"
-
-#include <string>
-#include <vector>
-#include "nesci/layout/spike_detector.hpp"
-
-namespace nesci {
-namespace consumer {
-
-SpikeDetector::SpikeDetector(const std::string& name) : Device{name} {}
-
-std::vector<std::uint64_t> SpikeDetector::GetNeuronIds(
-    const std::string& time) {
-  layout::SpikeDetector path(GetName());
-  path.SetTime(time);
-
-  return GetUint64Values(path);
-}
-
-}  // namespace consumer
-}  // namespace nesci
diff --git a/consumer/src/multimeter.cpp b/consumer/src/spike_detector_data_view.cpp
similarity index 54%
rename from consumer/src/multimeter.cpp
rename to consumer/src/spike_detector_data_view.cpp
index 3c12d06249fd02592519570664a39da425709093..7294746ec5719a93fdfc60d30beef68c4ee43881 100644
--- a/consumer/src/multimeter.cpp
+++ b/consumer/src/spike_detector_data_view.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nest in situ vis
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -19,31 +19,34 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "nesci/consumer/multimeter.hpp"
+#include "nesci/consumer/spike_detector_data_view.hpp"
 
 #include <string>
 #include <vector>
-
-#include "nesci/layout/multimeter.hpp"
+#include "nesci/spike_detector_layout.hpp"
 
 namespace nesci {
 namespace consumer {
 
-Multimeter::Multimeter(const std::string& name) : Device(name) {}
+namespace device_layout = nesci::layout::spike_detector;
+
+SpikeDetectorDataView::SpikeDetectorDataView(const conduit::Node* node)
+    : DeviceDataView{node} {}
+
+bool SpikeDetectorDataView::IsValid() const {
+  return GetType() == DataType::SPIKE_DETECTOR;
+}
 
-std::vector<std::string> Multimeter::GetAttributes(
-    const std::string& time) const {
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  return GetChildNames(path);
+conduit::float64_array SpikeDetectorDataView::GetTimesteps() const {
+  auto data_node = FetchPath(device_layout::GetTimesPath());
+  return data_node != nullptr ? data_node->as_float64_array()
+                              : conduit::float64_array{};
 }
 
-std::vector<std::string> Multimeter::GetNeuronIds(
-    const std::string& time, const std::string& attribute) const {
-  layout::Multimeter path(GetName());
-  path.SetTime(time);
-  path.SetAttribute(attribute);
-  return GetChildNames(path);
+conduit::uint64_array SpikeDetectorDataView::GetNeuronIds() const {
+  auto data_node = FetchPath(device_layout::GetNeuronIdsPath());
+  return data_node != nullptr ? data_node->as_uint64_array()
+                              : conduit::uint64_array{};
 }
 
 }  // namespace consumer
diff --git a/consumer/tests/CMakeLists.txt b/consumer/tests/CMakeLists.txt
index cb0a9230397c28d314a96b289f20c29188def342..35e845eb9549a83fdd6ab76b7e836dba06f40170 100644
--- a/consumer/tests/CMakeLists.txt
+++ b/consumer/tests/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,31 +19,20 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB CONSUMER_TEST_SOURCES *.cpp)
-file(GLOB CONSUMER_TEST_HEADERS *.hpp)
-
-rwthvr_add_executable(
+add_target(
+  EXECUTABLE
   NAME consumer_tests
-  SOURCES ${CONSUMER_TEST_SOURCES} 
-  HEADERS ${CONSUMER_TEST_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/consumer_tests/suppress_warnings.hpp"
-  )
-  
-target_include_directories(consumer_tests
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-set(CONSUMER_TESTS_ARGUMENTS ""
-  CACHE STRING
-  "Arguments, e.g., tags, that are passed to consumer_tests executable."
-  )
-add_test(NAME consumer_tests
-  COMMAND consumer_tests ${CONSUMER_TESTS_ARGUMENTS}
-  )
+  SOURCE_GLOB *.cpp
+  HEADER_GLOB *.hpp
+  DEPENDENCIES
+    PRIVATE nesci::consumer
+    PRIVATE nesci::producer
+    PRIVATE nesci::testing
+  SKIP_INSTALL
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-target_link_libraries(consumer_tests
-  PRIVATE nesci_consumer
-  PRIVATE nesci_producer
-  PRIVATE testing
-  PRIVATE ${CONAN_OR_CMAKE_catch}
-  )
+add_test(
+  NAME consumer_tests
+  COMMAND consumer_tests
+)
diff --git a/consumer/tests/test_arbor_multimeter.cpp b/consumer/tests/test_arbor_multimeter.cpp
deleted file mode 100644
index 2206481f05eae8ecaef8637c8026e4e2ff083dfd..0000000000000000000000000000000000000000
--- a/consumer/tests/test_arbor_multimeter.cpp
+++ /dev/null
@@ -1,217 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-#include <vector>
-
-#include "catch/catch.hpp"
-
-#include "nesci/consumer/arbor_multimeter.hpp"
-#include "nesci/testing/data.hpp"
-
-#include "utilities/vector_all_nan_or_empty.hpp"
-
-SCENARIO("ArborMultimeter retrieves datum for time, attribute, neuron",
-         "[nesci][nesci::consumer][nesci::consumer::ArborMultimeter]") {
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting data") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-      std::cout << "nesci::testing::ANY_TIME_STRING: "
-                << nesci::testing::ANY_TIME_STRING << std::endl;
-      std::cout << "nesci::testing::ANOTHER_ATTRIBUTE: "
-                << nesci::testing::ANOTHER_ATTRIBUTE << std::endl;
-      std::cout << "nesci::testing::THIRD_ID_STRING: "
-                << nesci::testing::THIRD_ID_STRING << std::endl;
-
-      THEN("it is correct") {
-        const std::size_t DATUM_OFFSET{
-            nesci::testing::ANY_TIME_OFFSET +
-            nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-            nesci::testing::THIRD_ID_OFFSET};
-        REQUIRE(datum == Approx(nesci::testing::ANY_DATA_VALUES[DATUM_OFFSET]));
-      }
-    }
-
-    WHEN("requesting datum at an invalid time") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::NO_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-
-    WHEN("requesting datum for an invalid attribute") {
-      const double datum = multimeter.GetDatum(nesci::testing::ANY_TIME_STRING,
-                                               nesci::testing::NO_ATTRIBUTE,
-                                               nesci::testing::THIRD_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-
-    WHEN("requesting datum for an invalid neuron id") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::NO_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting data") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-  }
-}
-
-SCENARIO("ArborMultimeter provides time series data",
-         "[nesci][nesci::consumer][nesci::consumer::ArborMultimeter]") {
-  std::vector<double> expected;
-  for (auto time_offset : nesci::testing::ANY_TIME_OFFSETS) {
-    const auto DATUM_INDEX{time_offset +
-                           nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-                           nesci::testing::THIRD_ID_OFFSET};
-    expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
-  }
-  const std::vector<double> nans(nesci::testing::ANY_TIMES_STRING.size(),
-                                 std::nan(""));
-
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time series data for an attribute and a neuron id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is correct") { REQUIRE(values == expected); }
-    }
-
-    WHEN(
-        "requesting time series data for an invalid attribute and a neuron "
-        "id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::NO_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-
-    WHEN(
-        "requesting time series data for an  attribute and an invalid neuron "
-        "id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::NO_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time series data for an attribute and a neuron id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-}
-
-SCENARIO("ArborMultimeter provides timestep data for all neurons",
-         "[nesci][nesci::consumer][nesci::consumer::ArborMultimeter]") {
-  std::vector<double> expected;
-  for (std::size_t i = 0; i < nesci::testing::ANY_IDS.size(); ++i) {
-    const auto ID_OFFSET{i * nesci::testing::ID_STRIDE};
-    const auto DATUM_INDEX{nesci::testing::THIRD_TIME_OFFSET +
-                           nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-                           ID_OFFSET};
-    expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
-  }
-
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time step data for an attribute") {
-      const std::vector<double> values{
-          multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
-                                     nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is correct") { REQUIRE(values == expected); }
-    }
-
-    WHEN("requesting time step data for an invalid time step") {
-      const std::vector<double> values{multimeter.GetTimestepData(
-          nesci::testing::NO_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-
-    WHEN("requesting time step data for an invalid attribute") {
-      const std::vector<double> values{multimeter.GetTimestepData(
-          nesci::testing::THIRD_TIME_STRING, nesci::testing::NO_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::ArborMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time step data for an attribute") {
-      const std::vector<double> values{
-          multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
-                                     nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-}
diff --git a/consumer/tests/test_consumer.cpp b/consumer/tests/test_consumer.cpp
index d599a12e14d6f698233a5aa879231ee1fed4f3bd..173da3d1ffe7b12a5018225126a857f39064d867 100644
--- a/consumer/tests/test_consumer.cpp
+++ b/consumer/tests/test_consumer.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,12 +19,11 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "consumer_tests/suppress_warnings.hpp"
+#include "nesci/consumer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
 #include "nesci/consumer/consumer.hpp"
-#include "nesci/layout/utility.hpp"
 #include "utilities/cout_capture.hpp"
 
 SCENARIO("call Greet() and check output", "[consumer]") {
diff --git a/consumer/tests/test_device.cpp b/consumer/tests/test_device_data_view.cpp
similarity index 53%
rename from consumer/tests/test_device.cpp
rename to consumer/tests/test_device_data_view.cpp
index 070950495f7298eb4a00c976115e7a2bac021104..6fe561ec9f678dcb3cb6d5173d4d6697de194c9b 100644
--- a/consumer/tests/test_device.cpp
+++ b/consumer/tests/test_device_data_view.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nest in situ vis
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -22,31 +22,33 @@
 #include <string>
 #include <vector>
 
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 
-#include "nesci/consumer/device.hpp"
+#include "conduit/conduit_node.hpp"
+#include "nesci/consumer/device_data_view.hpp"
+#include "nesci/data_type.hpp"
 #include "nesci/testing/data.hpp"
 
-SCENARIO("consumer::Device lists the timesteps",
-         "[nesci][nesci::consumer][nesci::consumer::Device]") {
+SCENARIO("consumer::DeviceView") {
   GIVEN("a device providing access to some data") {
-    nesci::consumer::Device device(nesci::testing::ANY_DEVICE_NAME);
-    device.SetNode(&nesci::testing::ANY_NEST_DATA);
+    conduit::Node n;
+    n["info/deviceType"] =
+        static_cast<conduit::uint64>(nesci::DataType::NEST_MULTIMETER);
+    nesci::consumer::DeviceDataView device_view(&n);
 
-    THEN("the device provides correct timesteps as strings") {
-      REQUIRE(device.GetTimesteps() == nesci::testing::ANY_TIMES_STRING);
+    THEN("the device view returns the correct type") {
+      REQUIRE(static_cast<uint64_t>(device_view.GetType()) ==
+              static_cast<uint64_t>(nesci::DataType::NEST_MULTIMETER));
     }
   }
+  GIVEN("a conduit node with invalid type") {
+    conduit::Node n;
+    n["info/deviceType"] = static_cast<conduit::uint64>(13131231);
+    nesci::consumer::DeviceDataView device_view(&n);
 
-  GIVEN("a device with an incorrect name providing access to some data") {
-    nesci::consumer::Device multimeter(nesci::testing::NOT_A_DEVICE_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    THEN("the device does not provide timesteps as strings") {
-      REQUIRE(multimeter.GetTimesteps().empty());
-    }
-    THEN("the device does not provide timesteps as doubles") {
-      REQUIRE(multimeter.GetTimesteps().empty());
+    THEN("the device view returns the type OTHER") {
+      REQUIRE(static_cast<uint64_t>(device_view.GetType()) ==
+              static_cast<uint64_t>(nesci::DataType::OTHER));
     }
   }
 }
diff --git a/consumer/tests/test_multimeter.cpp b/consumer/tests/test_multimeter.cpp
deleted file mode 100644
index a6879b8d610d80dd4fc858d264d5c0f751e18081..0000000000000000000000000000000000000000
--- a/consumer/tests/test_multimeter.cpp
+++ /dev/null
@@ -1,104 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "catch/catch.hpp"
-
-#include "nesci/consumer/multimeter.hpp"
-#include "nesci/testing/data.hpp"
-
-SCENARIO("consumer::Multimeter lists attributes for a timestep",
-         "[nesci][nesci::consumer][nesci::consumer::Multimeter]") {
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::Multimeter multimeter(nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("attributes are requested") {
-      auto attributes{
-          multimeter.GetAttributes(nesci::testing::ANY_TIME_STRING)};
-      THEN("the multimeter provides the attributes") {
-        REQUIRE(attributes == nesci::testing::ANY_ATTRIBUTES);
-      }
-    }
-
-    WHEN("attributes are requested for an invalid timestep") {
-      auto attributes{multimeter.GetAttributes(nesci::testing::NO_TIME_STRING)};
-      THEN("the multimeter does not provide attributes") {
-        REQUIRE(attributes.empty());
-      }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::Multimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("attributes are requested") {
-      auto attributes{
-          multimeter.GetAttributes(nesci::testing::ANY_TIME_STRING)};
-      THEN("the multimeter does not provide attributes") {
-        REQUIRE(attributes.empty());
-      }
-    }
-  }
-}
-
-SCENARIO(
-    "Multimeter lists the neuron ids stored for an attribute in a "
-    "timestep",
-    "[nesci][nesci::consumer][nesci::consumer::Multimeter]") {
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::Multimeter multimeter(nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("neuron ids are requested") {
-      auto ids{multimeter.GetNeuronIds(nesci::testing::ANY_TIME_STRING,
-                                       nesci::testing::ANY_ATTRIBUTE)};
-      THEN("the multimeter provides the ids") {
-        REQUIRE(ids == nesci::testing::ANY_IDS_STRING);
-      }
-    }
-
-    WHEN("neuron ids are requested for an invalid timestep") {
-      auto ids{multimeter.GetNeuronIds(nesci::testing::NO_TIME_STRING,
-                                       nesci::testing::ANY_ATTRIBUTE)};
-      THEN("the multimeter does not provide ids") { REQUIRE(ids.empty()); }
-    }
-
-    WHEN("neuron ids are requested for an invalid attribute") {
-      auto ids{multimeter.GetNeuronIds(nesci::testing::ANY_TIME_STRING,
-                                       nesci::testing::NO_ATTRIBUTE)};
-      THEN("the multimeter does not provide ids") { REQUIRE(ids.empty()); }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::Multimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("neuron ids are requested") {
-      auto ids{multimeter.GetNeuronIds(nesci::testing::ANY_TIME_STRING,
-                                       nesci::testing::ANY_ATTRIBUTE)};
-      THEN("the multimeter does not provide ids") { REQUIRE(ids.empty()); }
-    }
-  }
-}
diff --git a/consumer/tests/test_nest_multimeter.cpp b/consumer/tests/test_nest_multimeter.cpp
deleted file mode 100644
index 6c8ce79ad02f2de3b20ec16de8747486b3b29a61..0000000000000000000000000000000000000000
--- a/consumer/tests/test_nest_multimeter.cpp
+++ /dev/null
@@ -1,211 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <vector>
-
-#include "catch/catch.hpp"
-
-#include "conduit/conduit_node.hpp"
-
-#include "nesci/consumer/nest_multimeter.hpp"
-#include "nesci/testing/data.hpp"
-
-#include "utilities/vector_all_nan_or_empty.hpp"
-
-SCENARIO("NestMultimeter retrieves datum for time, attribute, neuron",
-         "[nesci][nesci::consumer][nesci::consumer::NestMultimeter]") {
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting data") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-      THEN("it is correct") {
-        const std::size_t DATUM_OFFSET{
-            nesci::testing::ANY_TIME_OFFSET +
-            nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-            nesci::testing::THIRD_ID_OFFSET};
-        REQUIRE(datum == Approx(nesci::testing::ANY_DATA_VALUES[DATUM_OFFSET]));
-      }
-    }
-
-    WHEN("requesting datum at an invalid time") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::NO_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-
-    WHEN("requesting datum for an invalid attribute") {
-      const double datum = multimeter.GetDatum(nesci::testing::ANY_TIME_STRING,
-                                               nesci::testing::NO_ATTRIBUTE,
-                                               nesci::testing::THIRD_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-
-    WHEN("requesting datum for an invalid neuron id") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::NO_ID_STRING);
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting data") {
-      const double datum = multimeter.GetDatum(
-          nesci::testing::ANY_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE,
-          nesci::testing::THIRD_ID_STRING);
-
-      THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
-    }
-  }
-}
-
-SCENARIO("NestMultimeter provides time series data",
-         "[nesci][nesci::consumer][nesci::consumer::NestMultimeter]") {
-  std::vector<double> expected;
-  for (auto time_offset : nesci::testing::ANY_TIME_OFFSETS) {
-    const auto DATUM_INDEX{time_offset +
-                           nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-                           nesci::testing::THIRD_ID_OFFSET};
-    expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
-  }
-  const std::vector<double> nans(nesci::testing::ANY_TIMES_STRING.size(),
-                                 std::nan(""));
-
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time series data for an attribute and a neuron id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is correct") { REQUIRE(values == expected); }
-    }
-
-    WHEN(
-        "requesting time series data for an invalid attribute and a neuron "
-        "id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::NO_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-
-    WHEN(
-        "requesting time series data for an  attribute and an invalid neuron "
-        "id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::NO_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time series data for an attribute and a neuron id") {
-      const std::vector<double> values{multimeter.GetTimeSeriesData(
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
-
-      THEN("the time series is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-}
-
-SCENARIO("NestMultimeter provides timestep data for all neurons",
-         "[nesci][nesci::consumer][nesci::consumer::NestMultimeter]") {
-  std::vector<double> expected;
-  for (std::size_t i = 0; i < nesci::testing::ANY_IDS.size(); ++i) {
-    const auto ID_OFFSET{i * nesci::testing::ID_STRIDE};
-    const auto DATUM_INDEX{nesci::testing::THIRD_TIME_OFFSET +
-                           nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
-                           ID_OFFSET};
-    expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
-  }
-
-  GIVEN("a multimeter providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::ANY_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time step data for an attribute") {
-      const std::vector<double> values{
-          multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
-                                     nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is correct") { REQUIRE(values == expected); }
-    }
-
-    WHEN("requesting time step data for an invalid time step") {
-      const std::vector<double> values{multimeter.GetTimestepData(
-          nesci::testing::NO_TIME_STRING, nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-
-    WHEN("requesting time step data for an invalid attribute") {
-      const std::vector<double> values{multimeter.GetTimestepData(
-          nesci::testing::THIRD_TIME_STRING, nesci::testing::NO_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-
-  GIVEN("a multimeter with an incorrect name providing access to some data") {
-    nesci::consumer::NestMultimeter multimeter(
-        nesci::testing::NOT_A_MULTIMETER_NAME);
-    multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
-
-    WHEN("requesting time step data for an attribute") {
-      const std::vector<double> values{
-          multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
-                                     nesci::testing::ANOTHER_ATTRIBUTE)};
-
-      THEN("the time step data is all nans or empty") {
-        REQUIRE_THAT(values, VectorAllNanOrEmpty());
-      }
-    }
-  }
-}
diff --git a/consumer/tests/test_nest_multimeter_data_view.cpp b/consumer/tests/test_nest_multimeter_data_view.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a90a681d1e74ae193f1d85d2cfc8526361d75cc7
--- /dev/null
+++ b/consumer/tests/test_nest_multimeter_data_view.cpp
@@ -0,0 +1,265 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualization Group.
+//------------------------------------------------------------------------------
+//                                  License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#include <vector>
+
+#include "catch2/catch.hpp"
+
+#include "conduit/conduit_node.hpp"
+
+#include "nesci/consumer/nest_multimeter_data_view.hpp"
+#include "nesci/testing/data.hpp"
+
+#include "utilities/vector_all_nan_or_empty.hpp"
+
+SCENARIO("NestMultimeter retrieves datum for time, attribute, neuron",
+         "[nesci][nesci::consumer][nesci::consumer::NestMultimeterDataView]") {
+  GIVEN("a multimeter providing access to some data") {
+    const conduit::Node node = nesci::testing::CreateNestMultimeterDataNode();
+    nesci::consumer::NestMultimeterDataView multimeter_view{&node};
+
+    THEN("the view is valid") { REQUIRE(multimeter_view.IsValid()); }
+    THEN("the device name is correct") {
+      REQUIRE(multimeter_view.HasName());
+      REQUIRE(multimeter_view.GetName() == nesci::testing::ANY_MULTIMETER_NAME);
+    }
+    THEN("the neuron ids are correct") {
+      auto neuron_ids = multimeter_view.GetNeuronIds();
+      REQUIRE(neuron_ids.number_of_elements() == 2);
+      REQUIRE(neuron_ids[0] == nesci::testing::ANY_ID);
+      REQUIRE(neuron_ids[1] == nesci::testing::OTHER_ID);
+    }
+    THEN("the double attributes are correct") {
+      auto float_param_names = multimeter_view.GetFloatingPointAttributeNames();
+      REQUIRE(float_param_names == nesci::testing::ANY_DOUBLE_ATTRIBUTES);
+
+      for (size_t i = 0; i < nesci::testing::ANY_DOUBLE_ATTRIBUTES.size();
+           ++i) {
+        auto float_param_values =
+            multimeter_view.GetFloatingPointAttributeValues(
+                nesci::testing::ANY_DOUBLE_ATTRIBUTES[i]);
+        REQUIRE(float_param_values.number_of_elements() == 2);
+        REQUIRE(float_param_values[0] == nesci::testing::ANY_DOUBLE_VALUES[i]);
+        REQUIRE(float_param_values[1] ==
+                nesci::testing::OTHER_DOUBLE_VALUES[i]);
+      }
+    }
+    THEN("the long attributes are correct") {
+      auto int_param_names = multimeter_view.GetIntegerAttributeNames();
+      REQUIRE(int_param_names == nesci::testing::ANY_LONG_ATTRIBUTES);
+
+      for (size_t i = 0; i < nesci::testing::ANY_LONG_ATTRIBUTES.size(); ++i) {
+        auto int_param_values = multimeter_view.GetIntegerAttributeValues(
+            nesci::testing::ANY_LONG_ATTRIBUTES[i]);
+        REQUIRE(int_param_values.number_of_elements() == 2);
+        REQUIRE(int_param_values[0] == nesci::testing::ANY_LONG_VALUES[i]);
+        REQUIRE(int_param_values[1] == nesci::testing::OTHER_LONG_VALUES[i]);
+      }
+    }
+  }
+
+  //   WHEN("requesting data") {
+  //     const double datum = multimeter.GetDatum(
+  //         nesci::testing::ANY_TIME_STRING,
+  //         nesci::testing::ANOTHER_ATTRIBUTE,
+  //         nesci::testing::THIRD_ID_STRING);
+  //     THEN("it is correct") {
+  //       const std::size_t DATUM_OFFSET{
+  //           nesci::testing::ANY_TIME_OFFSET +
+  //           nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
+  //           nesci::testing::THIRD_ID_OFFSET};
+  //       REQUIRE(datum ==
+  //       Approx(nesci::testing::ANY_DATA_VALUES[DATUM_OFFSET]));
+  //     }
+  //   }
+
+  //   WHEN("requesting datum at an invalid time") {
+  //     const double datum = multimeter.GetDatum(
+  //         nesci::testing::NO_TIME_STRING,
+  //         nesci::testing::ANOTHER_ATTRIBUTE,
+  //         nesci::testing::THIRD_ID_STRING);
+  //     THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
+  //   }
+
+  //   WHEN("requesting datum for an invalid attribute") {
+  //     const double datum =
+  //     multimeter.GetDatum(nesci::testing::ANY_TIME_STRING,
+  //                                              nesci::testing::NO_ATTRIBUTE,
+  //                                              nesci::testing::THIRD_ID_STRING);
+  //     THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
+  //   }
+
+  //   WHEN("requesting datum for an invalid neuron id") {
+  //     const double datum = multimeter.GetDatum(
+  //         nesci::testing::ANY_TIME_STRING,
+  //         nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::NO_ID_STRING);
+  //     THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
+  //   }
+  // }
+
+  // GIVEN("a multimeter with an incorrect name providing access to some
+  // data") {
+  //   nesci::consumer::NestMultimeter multimeter(
+  //       nesci::testing::NOT_A_MULTIMETER_NAME);
+  //   multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
+
+  //   WHEN("requesting data") {
+  //     const double datum = multimeter.GetDatum(
+  //         nesci::testing::ANY_TIME_STRING,
+  //         nesci::testing::ANOTHER_ATTRIBUTE,
+  //         nesci::testing::THIRD_ID_STRING);
+
+  //     THEN("nan is returned") { REQUIRE(std::isnan(datum)); }
+  //   }
+  // }
+}
+
+// SCENARIO("NestMultimeter provides time series data",
+//          "[nesci][nesci::consumer][nesci::consumer::NestMultimeter]") {
+//   std::vector<double> expected;
+//   for (auto time_offset : nesci::testing::ANY_TIME_OFFSETS) {
+//     const auto DATUM_INDEX{time_offset +
+//                            nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
+//                            nesci::testing::THIRD_ID_OFFSET};
+//     expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
+//   }
+//   const std::vector<double> nans(nesci::testing::ANY_TIMES_STRING.size(),
+//                                  std::nan(""));
+
+//   GIVEN("a multimeter providing access to some data") {
+//     nesci::consumer::NestMultimeter multimeter(
+//         nesci::testing::ANY_MULTIMETER_NAME);
+//     multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
+
+//     WHEN("requesting time series data for an attribute and a neuron id") {
+//       const std::vector<double> values{multimeter.GetTimeSeriesData(
+//           nesci::testing::ANOTHER_ATTRIBUTE,
+//           nesci::testing::THIRD_ID_STRING)};
+
+//       THEN("the time series is correct") { REQUIRE(values == expected); }
+//     }
+
+//     WHEN(
+//         "requesting time series data for an invalid attribute and a neuron
+//         " "id") {
+//       const std::vector<double> values{multimeter.GetTimeSeriesData(
+//           nesci::testing::NO_ATTRIBUTE, nesci::testing::THIRD_ID_STRING)};
+
+//       THEN("the time series is all nans or empty") {
+//         REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//       }
+//     }
+
+//     WHEN(
+//         "requesting time series data for an  attribute and an invalid
+//         neuron " "id") {
+//       const std::vector<double> values{multimeter.GetTimeSeriesData(
+//           nesci::testing::ANOTHER_ATTRIBUTE,
+//           nesci::testing::NO_ID_STRING)};
+
+//       THEN("the time series is all nans or empty") {
+//       REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//       }
+//   }
+// }
+
+// GIVEN("a multimeter with an incorrect name providing access to some data")
+// {
+//   nesci::consumer::NestMultimeter multimeter(
+//       nesci::testing::NOT_A_MULTIMETER_NAME);
+//   multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
+
+//   WHEN("requesting time series data for an attribute and a neuron id") {
+//     const std::vector<double> values{multimeter.GetTimeSeriesData(
+//         nesci::testing::ANOTHER_ATTRIBUTE,
+//         nesci::testing::THIRD_ID_STRING)};
+
+//     THEN("the time series is all nans or empty") {
+//       REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//     }
+//   }
+// }
+// }
+
+// SCENARIO("NestMultimeter provides timestep data for all neurons",
+//          "[nesci][nesci::consumer][nesci::consumer::NestMultimeter]") {
+//   std::vector<double> expected;
+//   for (std::size_t i = 0; i < nesci::testing::ANY_IDS.size(); ++i) {
+//     const auto ID_OFFSET{i * nesci::testing::ID_STRIDE};
+//     const auto DATUM_INDEX{nesci::testing::THIRD_TIME_OFFSET +
+//                            nesci::testing::ANOTHER_ATTRIBUTE_OFFSET +
+//                            ID_OFFSET};
+//     expected.push_back(nesci::testing::ANY_DATA_VALUES[DATUM_INDEX]);
+//   }
+
+//   GIVEN("a multimeter providing access to some data") {
+//     nesci::consumer::NestMultimeter multimeter(
+//         nesci::testing::ANY_MULTIMETER_NAME);
+//     multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
+
+//     WHEN("requesting time step data for an attribute") {
+//       const std::vector<double> values{
+//           multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
+//                                      nesci::testing::ANOTHER_ATTRIBUTE)};
+
+//       THEN("the time step data is correct") { REQUIRE(values == expected);
+//       }
+//     }
+
+//     WHEN("requesting time step data for an invalid time step") {
+//       const std::vector<double> values{multimeter.GetTimestepData(
+//           nesci::testing::NO_TIME_STRING,
+//           nesci::testing::ANOTHER_ATTRIBUTE)};
+
+//       THEN("the time step data is all nans or empty") {
+//         REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//       }
+//     }
+
+//     WHEN("requesting time step data for an invalid attribute") {
+//       const std::vector<double> values{multimeter.GetTimestepData(
+//           nesci::testing::THIRD_TIME_STRING,
+//           nesci::testing::NO_ATTRIBUTE)};
+
+//       THEN("the time step data is all nans or empty") {
+//         REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//       }
+//     }
+//   }
+
+//   GIVEN("a multimeter with an incorrect name providing access to some
+//   data")
+//   {
+//     nesci::consumer::NestMultimeter multimeter(
+//         nesci::testing::NOT_A_MULTIMETER_NAME);
+//     multimeter.SetNode(&nesci::testing::ANY_NEST_DATA);
+
+//     WHEN("requesting time step data for an attribute") {
+//       const std::vector<double> values{
+//           multimeter.GetTimestepData(nesci::testing::THIRD_TIME_STRING,
+//                                      nesci::testing::ANOTHER_ATTRIBUTE)};
+
+//       THEN("the time step data is all nans or empty") {
+//         REQUIRE_THAT(values, VectorAllNanOrEmpty());
+//       }
+//     }
+//   }
+// }
diff --git a/consumer/tests/test_spike_detector.cpp b/consumer/tests/test_spike_detector.cpp
index 56bd7b552139ca1a0fdadd105696d1cb54be720b..b48f743ceb4bcde39f025e076f2b8542092105db 100644
--- a/consumer/tests/test_spike_detector.cpp
+++ b/consumer/tests/test_spike_detector.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -21,53 +21,42 @@
 
 #include <vector>
 
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 
 #include "conduit/conduit_node.hpp"
 
-#include "nesci/consumer/spike_detector.hpp"
-#include "nesci/producer/spike_detector.hpp"
+#include "nesci/consumer/spike_detector_data_view.hpp"
 #include "nesci/testing/data.hpp"
 
 #include "utilities/vector_all_nan_or_empty.hpp"
 
-SCENARIO("Test GetNeuronIds", "[nesci][nesci::SpikeDetector]") {
+SCENARIO("Test GetNeuronIds",
+         "[nesci][nesci::consumer][nesci::consumer::SpikeDetectorDataView]") {
   GIVEN("a conduit node and a spike detector") {
-    nesci::consumer::SpikeDetector spike_detector(
-        nesci::testing::ANY_SPIKE_DETECTOR_NAME);
-
-    spike_detector.SetNode(&nesci::testing::ANY_SPIKE_DATA);
-
-    std::vector<std::uint64_t> output =
-        spike_detector.GetNeuronIds(nesci::testing::ANY_TIME_STRING);
-
-    for (uint64_t i = 0; i < output.size(); ++i) {
-      REQUIRE(output.at(i) == nesci::testing::ANY_IDS.at(i));
+    conduit::Node node = nesci::testing::CreateSpikeDetectorDataNode();
+    nesci::consumer::SpikeDetectorDataView spike_detector_view{&node};
+
+    THEN("the view is valid") { REQUIRE(spike_detector_view.IsValid()); }
+    THEN("the device name is correct") {
+      REQUIRE(spike_detector_view.HasName());
+      REQUIRE(spike_detector_view.GetName() ==
+              nesci::testing::ANY_SPIKE_DETECTOR_NAME);
     }
-  }
-}
-
-SCENARIO("Test consumer with producer output",
-         "[nesci][nesci::SpikeDetector]") {
-  GIVEN("a conduit node created by a producer") {
-    nesci::producer::SpikeDetector spike_detector_producer(
-        nesci::testing::ANY_SPIKE_DETECTOR_NAME);
-
-    spike_detector_producer.Record(nesci::producer::SpikeDetector::Datum{
-        nesci::testing::ANY_TIME, nesci::testing::ANY_ID});
-
-    WHEN("querying") {
-      nesci::consumer::SpikeDetector spike_detector_consumer(
-          nesci::testing::ANY_SPIKE_DETECTOR_NAME);
-
-      const auto node = spike_detector_producer.node();
-      spike_detector_consumer.SetNode(&node);
-
-      auto neuron_ids =
-          spike_detector_consumer.GetNeuronIds(nesci::testing::ANY_TIME_STRING);
-
-      REQUIRE(neuron_ids.size() == 1);
-      REQUIRE(neuron_ids[0] == nesci::testing::ANY_ID);
+    THEN("the data is correct") {
+      auto neuron_ids = spike_detector_view.GetNeuronIds();
+      auto timesteps = spike_detector_view.GetTimesteps();
+
+      REQUIRE(static_cast<size_t>(neuron_ids.number_of_elements()) ==
+              nesci::testing::ANY_SPIKE_DATA.size());
+      REQUIRE(static_cast<size_t>(timesteps.number_of_elements()) ==
+              nesci::testing::ANY_SPIKE_DATA.size());
+
+      for (size_t i = 0; i < nesci::testing::ANY_SPIKE_DATA.size(); ++i) {
+        REQUIRE(neuron_ids[static_cast<conduit::index_t>(i)] ==
+                nesci::testing::ANY_SPIKE_DATA[i].node_id);
+        REQUIRE(timesteps[static_cast<conduit::index_t>(i)] ==
+                nesci::testing::ANY_SPIKE_DATA[i].time);
+      }
     }
   }
 }
diff --git a/consumer/tests/tests.cpp b/consumer/tests/tests.cpp
index d76514a7f600170511de10808b5167f9cdadbd94..9297554e83f411cbe81c6ce211592efa3c05e220 100644
--- a/consumer/tests/tests.cpp
+++ b/consumer/tests/tests.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,8 +19,8 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "consumer_tests/suppress_warnings.hpp"
+#include "nesci/consumer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
 #define CATCH_CONFIG_MAIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
diff --git a/consumer/tests/utilities/cout_capture.hpp b/consumer/tests/utilities/cout_capture.hpp
index f354d037992f2fe6d939140c3ac801ce228d9973..d8701d4b4b26139845e68d2828bed9183e3b8aef 100644
--- a/consumer/tests/utilities/cout_capture.hpp
+++ b/consumer/tests/utilities/cout_capture.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -26,9 +26,9 @@
 #include <sstream>
 #include <string>
 
-#include "consumer_tests/suppress_warnings.hpp"
+#include "nesci/consumer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
 
 namespace test_utilities {
diff --git a/consumer/tests/utilities/vector_all_nan_or_empty.hpp b/consumer/tests/utilities/vector_all_nan_or_empty.hpp
index 61676926c6e0da9a6a020318e8c323855574dd3f..d99fec118899c12ca790526b326ffe3e7c0b9209 100644
--- a/consumer/tests/utilities/vector_all_nan_or_empty.hpp
+++ b/consumer/tests/utilities/vector_all_nan_or_empty.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -25,9 +25,9 @@
 #include <string>
 #include <vector>
 
-#include "consumer_tests/suppress_warnings.hpp"
+#include "nesci/consumer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
 
 namespace Catch {
diff --git a/layout/include/nesci/layout/device.hpp b/layout/include/nesci/layout/device.hpp
deleted file mode 100644
index c6b6ffca7e28006754d8c76ecac3a77022349b81..0000000000000000000000000000000000000000
--- a/layout/include/nesci/layout/device.hpp
+++ /dev/null
@@ -1,57 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef LAYOUT_INCLUDE_NESCI_LAYOUT_DEVICE_HPP_
-#define LAYOUT_INCLUDE_NESCI_LAYOUT_DEVICE_HPP_
-
-#include <string>
-
-namespace nesci {
-namespace layout {
-
-class Device {
- public:
-  Device() = delete;
-  explicit Device(const std::string& name);
-  Device(const Device&) = default;
-  Device(Device&&) = default;
-  virtual ~Device() = default;
-
-  Device& operator=(const Device&) = default;
-  Device& operator=(Device&&) = default;
-
-  virtual std::string GetPath() const;
-
-  void SetTime(const std::string& time);
-  void SetTime(double time);
-
- protected:
-  static std::string SuffixIfNotEmpty(const std::string& suffix);
-
- private:
-  std::string name_{""};
-  std::string time_{""};
-};
-
-}  // namespace layout
-}  // namespace nesci
-
-#endif  // LAYOUT_INCLUDE_NESCI_LAYOUT_DEVICE_HPP_
diff --git a/layout/include/nesci/layout/multimeter.hpp b/layout/include/nesci/layout/multimeter.hpp
deleted file mode 100644
index 68e633e51904d0c0f024b0b14aa5f94dd2d2e560..0000000000000000000000000000000000000000
--- a/layout/include/nesci/layout/multimeter.hpp
+++ /dev/null
@@ -1,58 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef LAYOUT_INCLUDE_NESCI_LAYOUT_MULTIMETER_HPP_
-#define LAYOUT_INCLUDE_NESCI_LAYOUT_MULTIMETER_HPP_
-
-#include <string>
-
-#include "nesci/layout/device.hpp"
-
-namespace nesci {
-namespace layout {
-
-class Multimeter : public Device {
- public:
-  Multimeter() = delete;
-  explicit Multimeter(const std::string& name);
-  Multimeter(const Multimeter&) = default;
-  explicit Multimeter(const Device& device);
-  Multimeter(Multimeter&&) = default;
-  explicit Multimeter(Device&& device);
-  ~Multimeter() override = default;
-
-  Multimeter& operator=(const Multimeter&) = default;
-  Multimeter& operator=(Multimeter&&) = default;
-
-  std::string GetPath() const override;
-
-  void SetAttribute(const std::string& attribute);
-  void SetNeuronId(const std::string& neuron_id);
-
- private:
-  std::string attribute_{""};
-  std::string neuron_id_{""};
-};
-
-}  // namespace layout
-}  // namespace nesci
-
-#endif  // LAYOUT_INCLUDE_NESCI_LAYOUT_MULTIMETER_HPP_
diff --git a/layout/include/nesci/layout/spike_detector.hpp b/layout/include/nesci/layout/spike_detector.hpp
deleted file mode 100644
index fb9e85bde3a4b9978801f167a410706597a9d452..0000000000000000000000000000000000000000
--- a/layout/include/nesci/layout/spike_detector.hpp
+++ /dev/null
@@ -1,51 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef LAYOUT_INCLUDE_NESCI_LAYOUT_SPIKE_DETECTOR_HPP_
-#define LAYOUT_INCLUDE_NESCI_LAYOUT_SPIKE_DETECTOR_HPP_
-
-#include <string>
-
-#include "nesci/layout/device.hpp"
-
-namespace nesci {
-namespace layout {
-
-class SpikeDetector : public Device {
- public:
-  SpikeDetector() = delete;
-  explicit SpikeDetector(const std::string& name);
-  SpikeDetector(const SpikeDetector&) = default;
-  explicit SpikeDetector(const Device& device);
-  SpikeDetector(SpikeDetector&&) = default;
-  explicit SpikeDetector(Device&& device);
-  ~SpikeDetector() override = default;
-
-  SpikeDetector& operator=(const SpikeDetector&) = default;
-  SpikeDetector& operator=(SpikeDetector&&) = default;
-
-  std::string GetPath() const override;
-};
-
-}  // namespace layout
-}  // namespace nesci
-
-#endif  // LAYOUT_INCLUDE_NESCI_LAYOUT_SPIKE_DETECTOR_HPP_
diff --git a/layout/src/multimeter.cpp b/layout/src/multimeter.cpp
deleted file mode 100644
index 41af2520ac06067ddc2e797583081c0e0f37aa5b..0000000000000000000000000000000000000000
--- a/layout/src/multimeter.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/layout/multimeter.hpp"
-
-#include <string>
-
-namespace nesci {
-namespace layout {
-
-Multimeter::Multimeter(const std::string& name) : Device(name) {}
-
-Multimeter::Multimeter(const Device& device) : Device(device) {}
-
-Multimeter::Multimeter(Device&& device) : Device(device) {}
-
-std::string Multimeter::GetPath() const {
-  return Device::GetPath() + SuffixIfNotEmpty(attribute_) +
-         SuffixIfNotEmpty(neuron_id_);
-}
-
-void Multimeter::SetAttribute(const std::string& attribute) {
-  attribute_ = attribute;
-}
-
-void Multimeter::SetNeuronId(const std::string& neuron_id) {
-  neuron_id_ = neuron_id;
-}
-
-}  // namespace layout
-}  // namespace nesci
diff --git a/layout/src/spike_detector.cpp b/layout/src/spike_detector.cpp
deleted file mode 100644
index 50affc42edc10de768bd943407a7cf3dbd813cd6..0000000000000000000000000000000000000000
--- a/layout/src/spike_detector.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "nesci/layout/spike_detector.hpp"
-#include <string>
-
-namespace nesci {
-namespace layout {
-
-SpikeDetector::SpikeDetector(const std::string& name) : Device(name) {}
-
-SpikeDetector::SpikeDetector(const Device& device) : Device(device) {}
-
-SpikeDetector::SpikeDetector(Device&& device) : Device(device) {}
-
-std::string SpikeDetector::GetPath() const { return Device::GetPath(); }
-
-}  // namespace layout
-}  // namespace nesci
diff --git a/layout/tests/test_device.cpp b/layout/tests/test_device.cpp
deleted file mode 100644
index 1b5bac4172d7598ca90d045269bc03a3a743f427..0000000000000000000000000000000000000000
--- a/layout/tests/test_device.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-//------------------------------------------------------------------------------
-// nest in situ vis
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "catch/catch.hpp"
-
-#include "nesci/layout/device.hpp"
-#include "nesci/testing/data.hpp"
-
-SCENARIO("Data layout for devices",
-         "[nesci][nesci::layout][nesci::layout::device]") {
-  GIVEN("a layout for a named device") {
-    nesci::layout::Device path(nesci::testing::ANY_DEVICE_NAME);
-
-    THEN("the path for the device itself is computed correctly") {
-      REQUIRE(path.GetPath() == nesci::testing::ANY_DEVICE_NAME);
-    }
-
-    WHEN("setting the time") {
-      path.SetTime(nesci::testing::ANY_TIME_STRING);
-      THEN("the path is computed correctly") {
-        REQUIRE(path.GetPath() == nesci::testing::ANY_DEVICE_NAME +
-                                      std::string("/") +
-                                      nesci::testing::ANY_TIME_STRING);
-      }
-    }
-
-    WHEN("setting the time") {
-      path.SetTime(nesci::testing::ANY_TIME);
-      THEN("the path is computed correctly") {
-        REQUIRE(path.GetPath() == nesci::testing::ANY_DEVICE_NAME +
-                                      std::string("/") +
-                                      nesci::testing::ANY_TIME_STRING);
-      }
-    }
-  }
-}
diff --git a/layout/tests/test_layout.cpp b/layout/tests/test_layout.cpp
deleted file mode 100644
index 6f9f3e9fd4970935097656f2e51935940f170c3e..0000000000000000000000000000000000000000
--- a/layout/tests/test_layout.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include "layout_tests/suppress_warnings.hpp"
-SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
-SUPPRESS_WARNINGS_END
-#include "nesci/layout/layout.hpp"
-#include "utilities/cout_capture.hpp"
-
-SCENARIO("call Greet() and check output", "[layout]") {
-  test_utilities::CoutCapture capture;
-  nesci::layout::Greet();
-  REQUIRE(capture.ToString() == "\"Hello World!\"");
-}
diff --git a/layout/tests/test_multimeter.cpp b/layout/tests/test_multimeter.cpp
deleted file mode 100644
index 700dd7cf9c3a50153786c7e39de77f7045106a88..0000000000000000000000000000000000000000
--- a/layout/tests/test_multimeter.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "catch/catch.hpp"
-
-#include "nesci/layout/multimeter.hpp"
-#include "nesci/testing/data.hpp"
-
-SCENARIO("Data layout for multimeters",
-         "[nesci][nesci::layout][nesci::layout::multimeter]") {
-  GIVEN("a layout for a multimeter") {
-    nesci::layout::Multimeter path(nesci::testing::ANY_MULTIMETER_NAME);
-
-    WHEN("setting a time,  an attribute, and a neuron id") {
-      path.SetTime(nesci::testing::ANY_TIME_STRING);
-      THEN("the multimeter reports the correct paths") {
-        REQUIRE(path.GetPath() == nesci::testing::ANY_MULTIMETER_NAME +
-                                      std::string("/") +
-                                      nesci::testing::ANY_TIME_STRING);
-      }
-      WHEN("setting a time, an attribute, and a neuron id") {
-        path.SetAttribute(nesci::testing::ANOTHER_ATTRIBUTE);
-        THEN("the multimeter reports the correct paths") {
-          REQUIRE(path.GetPath() ==
-                  nesci::testing::ANY_MULTIMETER_NAME + std::string("/") +
-                      nesci::testing::ANY_TIME_STRING + std::string("/") +
-                      nesci::testing::ANOTHER_ATTRIBUTE);
-        }
-        WHEN("setting a time, an attribute, and a neuron id") {
-          path.SetNeuronId(nesci::testing::THIRD_ID_STRING);
-          THEN("the multimeter reports the correct paths") {
-            REQUIRE(path.GetPath() ==
-                    nesci::testing::ANY_MULTIMETER_NAME + std::string("/") +
-                        nesci::testing::ANY_TIME_STRING + std::string("/") +
-                        nesci::testing::ANOTHER_ATTRIBUTE + std::string("/") +
-                        nesci::testing::THIRD_ID_STRING);
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/layout/tests/test_spike_detector.cpp b/layout/tests/test_spike_detector.cpp
deleted file mode 100644
index ebb76df2bbd9eff6f927f3b083803566056e1827..0000000000000000000000000000000000000000
--- a/layout/tests/test_spike_detector.cpp
+++ /dev/null
@@ -1,43 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "catch/catch.hpp"
-
-#include "nesci/layout/spike_detector.hpp"
-#include "nesci/testing/data.hpp"
-
-SCENARIO("Data layout for spike detectors",
-         "[nesci][nesci::layout][nesci::layout::SpikeDetector]") {
-  GIVEN("a layout for a multimeter") {
-    nesci::layout::SpikeDetector path(nesci::testing::ANY_SPIKE_DETECTOR_NAME);
-
-    WHEN("setting a time") {
-      path.SetTime(nesci::testing::ANY_TIME_STRING);
-      THEN("the spike detector reports the correct paths") {
-        REQUIRE(path.GetPath() == nesci::testing::ANY_SPIKE_DETECTOR_NAME +
-                                      std::string("/") +
-                                      nesci::testing::ANY_TIME_STRING);
-      }
-    }
-  }
-}
diff --git a/layout/tests/utilities/cout_capture.hpp b/layout/tests/utilities/cout_capture.hpp
deleted file mode 100644
index 129753285d33708c51249f86b6a3f133aa8afd5f..0000000000000000000000000000000000000000
--- a/layout/tests/utilities/cout_capture.hpp
+++ /dev/null
@@ -1,65 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualization Group.
-//------------------------------------------------------------------------------
-//                                  License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#ifndef LAYOUT_TESTS_UTILITIES_COUT_CAPTURE_HPP_
-#define LAYOUT_TESTS_UTILITIES_COUT_CAPTURE_HPP_
-
-#include <iostream>
-#include <sstream>
-#include <string>
-
-#include "layout_tests/suppress_warnings.hpp"
-SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
-SUPPRESS_WARNINGS_END
-
-namespace test_utilities {
-
-class CoutCapture {
- public:
-  CoutCapture() { original_rdbuf_ = std::cout.rdbuf(cout_stream_.rdbuf()); }
-  ~CoutCapture() { std::cout.rdbuf(original_rdbuf_); }
-
-  bool operator==(const std::string &other) const {
-    return cout_stream_.str() == other;
-  }
-
-  std::string ToString() const { return "\"" + cout_stream_.str() + "\""; }
-
- private:
-  std::streambuf *original_rdbuf_;
-  std::stringstream cout_stream_;
-};
-
-}  // namespace test_utilities
-
-namespace Catch {
-
-template <>
-struct StringMaker<test_utilities::CoutCapture> {
-  static std::string convert(const test_utilities::CoutCapture &cout_capture) {
-    return cout_capture.ToString();
-  }
-};
-
-}  // namespace Catch
-
-#endif  // LAYOUT_TESTS_UTILITIES_COUT_CAPTURE_HPP_
diff --git a/layout/CMakeLists.txt b/nesci/CMakeLists.txt
similarity index 58%
rename from layout/CMakeLists.txt
rename to nesci/CMakeLists.txt
index 75b0b44d1485ea9626dd06b3fb5429da50d16183..c1f775398e73b2c422465422f8feb8583d0f25fe 100644
--- a/layout/CMakeLists.txt
+++ b/nesci/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,26 +19,19 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB LAYOUT_SOURCES src/*.cpp)
-file(GLOB LAYOUT_HEADERS include/nesci/layout/*.hpp)
+add_target(
+  LIBRARY
+  NAME nesci
+  SOURCE_GLOB src/*.cpp
+  HEADER_GLOB include/nesci/*.hpp
+  INCLUDE_PREFIX "nesci/"
+  DEPENDENCIES
+    PUBLIC conduit
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-rwthvr_add_library(NAME nesci_layout
-  SOURCES ${LAYOUT_SOURCES}
-  HEADERS ${LAYOUT_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/layout/suppress_warnings.hpp"
+if (NOT MSVC)
+  target_compile_options(nesci
+    PRIVATE -fPIC
   )
-generate_export_header(nesci_layout
-  EXPORT_FILE_NAME
-  "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/layout/export.hpp"
-  )
-  
-target_include_directories(nesci_layout
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-
-target_compile_options(nesci_layout
-  PRIVATE -fPIC
-  )
-
-add_subdirectory(tests)
+endif (NOT MSVC)
diff --git a/layout/include/nesci/layout/layout.hpp b/nesci/include/nesci/data_type.hpp
similarity index 77%
rename from layout/include/nesci/layout/layout.hpp
rename to nesci/include/nesci/data_type.hpp
index ab10ea1f7b4994cedc3c8f3f0de65fea4866afe3..60b925f38ab5e4615c8f19669c7a3a1d9477ab88 100644
--- a/layout/include/nesci/layout/layout.hpp
+++ b/nesci/include/nesci/data_type.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,15 +19,19 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#ifndef LAYOUT_INCLUDE_NESCI_LAYOUT_LAYOUT_HPP_
-#define LAYOUT_INCLUDE_NESCI_LAYOUT_LAYOUT_HPP_
+#ifndef NESCI_INCLUDE_NESCI_DATA_TYPE_HPP_
+#define NESCI_INCLUDE_NESCI_DATA_TYPE_HPP_
+
+#include <cstdint>
 
 namespace nesci {
-namespace layout {
 
-void Greet();
+enum class DataType : uint64_t {
+  OTHER = 0,
+  SPIKE_DETECTOR = 1,
+  NEST_MULTIMETER = 2
+};
 
-}  // namespace layout
 }  // namespace nesci
 
-#endif  // LAYOUT_INCLUDE_NESCI_LAYOUT_LAYOUT_HPP_
+#endif  // NESCI_INCLUDE_NESCI_DATA_TYPE_HPP_
diff --git a/layout/include/nesci/layout/utility.hpp b/nesci/include/nesci/device_layout.hpp
similarity index 74%
rename from layout/include/nesci/layout/utility.hpp
rename to nesci/include/nesci/device_layout.hpp
index 0dee828d410a1fdc15beb86968d796dbb027056c..470c76beb17d085f42fdfb8dc97ad406818d2d1b 100644
--- a/layout/include/nesci/layout/utility.hpp
+++ b/nesci/include/nesci/device_layout.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,22 +19,20 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#ifndef LAYOUT_INCLUDE_NESCI_LAYOUT_UTILITY_HPP_
-#define LAYOUT_INCLUDE_NESCI_LAYOUT_UTILITY_HPP_
+#ifndef NESCI_INCLUDE_NESCI_DEVICE_LAYOUT_HPP_
+#define NESCI_INCLUDE_NESCI_DEVICE_LAYOUT_HPP_
 
 #include <string>
 
 namespace nesci {
 namespace layout {
-namespace utility {
+namespace device {
 
-template <typename T>
-std::string to_string(T&& value) {
-  return std::to_string(value);
-}
+inline std::string GetTypePath() { return "info/deviceType"; }
+inline std::string GetNamePath() { return "info/deviceName"; }
 
-}  // namespace utility
+}  // namespace device
 }  // namespace layout
 }  // namespace nesci
 
-#endif  // LAYOUT_INCLUDE_NESCI_LAYOUT_UTILITY_HPP_
+#endif  // NESCI_INCLUDE_NESCI_DEVICE_LAYOUT_HPP_
diff --git a/layout/src/device.cpp b/nesci/include/nesci/nest_multimeter_layout.hpp
similarity index 64%
rename from layout/src/device.cpp
rename to nesci/include/nesci/nest_multimeter_layout.hpp
index b22f4cabdcd6052ee37632cf411a92e73f7777ee..03404562a35e8c67eb385710e841f9b385e62333 100644
--- a/layout/src/device.cpp
+++ b/nesci/include/nesci/nest_multimeter_layout.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,25 +19,27 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "nesci/layout/device.hpp"
-#include <sstream>
+#ifndef NESCI_INCLUDE_NESCI_NEST_MULTIMETER_LAYOUT_HPP_
+#define NESCI_INCLUDE_NESCI_NEST_MULTIMETER_LAYOUT_HPP_
+
 #include <string>
-#include "nesci/layout/utility.hpp"
 
 namespace nesci {
 namespace layout {
+namespace nest_multimeter {
 
-Device::Device(const std::string& name) : name_(name) {}
-
-std::string Device::GetPath() const { return name_ + SuffixIfNotEmpty(time_); }
+inline std::string GetTimestepPath() { return "info/timestep"; }
 
-std::string Device::SuffixIfNotEmpty(const std::string& suffix) {
-  return suffix != "" ? "/" + suffix : "";
-}
+inline std::string GetNeuronIdsPath() { return "neuronIds"; }
 
-void Device::SetTime(const std::string& time) { time_ = time; }
+inline std::string GetAttributePath() { return "attributes"; }
 
-void Device::SetTime(double time) { SetTime(utility::to_string(time)); }
+inline std::string GetPathForAttribute(const std::string& attribute) {
+  return GetAttributePath() + "/" + attribute;
+}
 
+}  // namespace nest_multimeter
 }  // namespace layout
 }  // namespace nesci
+
+#endif  // NESCI_INCLUDE_NESCI_NEST_MULTIMETER_LAYOUT_HPP_
diff --git a/layout/src/layout.cpp b/nesci/include/nesci/spike_detector_layout.hpp
similarity index 71%
rename from layout/src/layout.cpp
rename to nesci/include/nesci/spike_detector_layout.hpp
index 4afaacd74dc0c804ead6a51b8ad94b25e65c3468..dfbb4c0b821c3db349420a1bce195125c7cb5cbb 100644
--- a/layout/src/layout.cpp
+++ b/nesci/include/nesci/spike_detector_layout.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,14 +19,20 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "nesci/layout/layout.hpp"
+#ifndef NESCI_INCLUDE_NESCI_SPIKE_DETECTOR_LAYOUT_HPP_
+#define NESCI_INCLUDE_NESCI_SPIKE_DETECTOR_LAYOUT_HPP_
 
-#include <iostream>
+#include <string>
 
 namespace nesci {
 namespace layout {
+namespace spike_detector {
 
-void Greet() { std::cout << "Hello World!"; }
+inline std::string GetNeuronIdsPath() { return "neuronIds"; }
+inline std::string GetTimesPath() { return "times"; }
 
+}  // namespace spike_detector
 }  // namespace layout
 }  // namespace nesci
+
+#endif  // NESCI_INCLUDE_NESCI_SPIKE_DETECTOR_LAYOUT_HPP_
diff --git a/layout/tests/tests.cpp b/nesci/src/nesci.cpp
similarity index 83%
rename from layout/tests/tests.cpp
rename to nesci/src/nesci.cpp
index 011aeb3b3b748cf404ab02bcd15f1b830adb9c7b..86f7b97d34f270893eed647b3e84d460a3459abc 100644
--- a/layout/tests/tests.cpp
+++ b/nesci/src/nesci.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,8 +19,4 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "layout_tests/suppress_warnings.hpp"
-SUPPRESS_WARNINGS_BEGIN
-#define CATCH_CONFIG_MAIN
-#include "catch/catch.hpp"
-SUPPRESS_WARNINGS_END
+namespace nesci {}
diff --git a/producer/CMakeLists.txt b/producer/CMakeLists.txt
index 0692db0e137e9aa4aaca8cf78b6527e8c72b3d2b..6b1b9154e2402cf03fdd0d3e0aa8743108d7506a 100644
--- a/producer/CMakeLists.txt
+++ b/producer/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -18,32 +18,23 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #-------------------------------------------------------------------------------
+add_target(
+  LIBRARY
+  NAME producer
+  SOURCE_GLOB src/*.cpp
+  HEADER_GLOB include/nesci/producer/*.hpp
+  DEPENDENCIES
+    PUBLIC conduit
+    PUBLIC nesci::nesci
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-file(GLOB PRODUCER_SOURCES src/*.cpp)
-file(GLOB PRODUCER_HEADERS include/nesci/producer/*.hpp)
-
-rwthvr_add_library(NAME nesci_producer
-  SOURCES ${PRODUCER_SOURCES}
-  HEADERS ${PRODUCER_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/producer/suppress_warnings.hpp"
-  )
-generate_export_header(nesci_producer
-  EXPORT_FILE_NAME
-  "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/producer/export.hpp"
-  )
-  
-target_include_directories(nesci_producer
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-
-target_link_libraries(nesci_producer
-  PUBLIC nesci_layout
-  PUBLIC ${CONAN_OR_CMAKE_conduit}
-  )
-
-target_compile_options(nesci_producer
-  PRIVATE -fPIC
+if (NOT MSVC)
+  target_compile_options(producer
+    PRIVATE -fPIC
   )
+endif (NOT MSVC)
 
-add_subdirectory(tests)
+if (ENABLE_TESTS)
+  add_subdirectory(tests)
+endif (ENABLE_TESTS)
diff --git a/producer/include/nesci/producer/arbor_multimeter.hpp b/producer/include/nesci/producer/arbor_multimeter.hpp
index 8b15fa17843149390d70d7f9c252511344538c03..07bec4a3a060621e04d0d03a57a48f572256a7eb 100644
--- a/producer/include/nesci/producer/arbor_multimeter.hpp
+++ b/producer/include/nesci/producer/arbor_multimeter.hpp
@@ -1,72 +1,72 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
+// //------------------------------------------------------------------------------
+// // nesci -- neuronal simulator conan interface
+// //
+// // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// // Virtual Reality & Immersive Visualisation Group.
+// //------------------------------------------------------------------------------
+// //                                 License
+// //
+// // Licensed under the Apache License, Version 2.0 (the "License");
+// // you may not use this file except in compliance with the License.
+// // You may obtain a copy of the License at
+// //
+// //     http://www.apache.org/licenses/LICENSE-2.0
+// //
+// // Unless required by applicable law or agreed to in writing, software
+// // distributed under the License is distributed on an "AS IS" BASIS,
+// // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// // See the License for the specific language governing permissions and
+// // limitations under the License.
+// //------------------------------------------------------------------------------
 
 #ifndef PRODUCER_INCLUDE_NESCI_PRODUCER_ARBOR_MULTIMETER_HPP_
 #define PRODUCER_INCLUDE_NESCI_PRODUCER_ARBOR_MULTIMETER_HPP_
 
-#include <string>
+// #include <string>
 
-#include "nesci/layout/multimeter.hpp"
-#include "nesci/producer/device.hpp"
+// #include "nesci/layout/multimeter.hpp"
+// #include "nesci/producer/device.hpp"
 
-namespace nesci {
-namespace producer {
+// namespace nesci {
+// namespace producer {
 
-class ArborMultimeter final : public Device {
- public:
-  struct Datum : public Device::Datum {
-    using Device_t = ArborMultimeter;
+// class ArborMultimeter final : public Device {
+//  public:
+//   struct Datum : public Device::Datum {
+//     using Device_t = ArborMultimeter;
 
-    Datum(double time, const std::string& attribute, const std::string& id,
-          double value)
-        : Device::Datum{ConstructTimestep(time)},
-          exact_time{time},
-          attribute{attribute},
-          id{id},
-          value{value} {}
-    double exact_time;
-    std::string attribute;
-    std::string id;
-    double value;
+//     Datum(double time, const std::string& attribute, const std::string& id,
+//           double value)
+//         : Device::Datum{ConstructTimestep(time)},
+//           exact_time{time},
+//           attribute{attribute},
+//           id{id},
+//           value{value} {}
+//     double exact_time;
+//     std::string attribute;
+//     std::string id;
+//     double value;
 
-    static double ConstructTimestep(double time) {
-      return std::round(10.0 * time) / 10.0;
-    }
-  };
+//     static double ConstructTimestep(double time) {
+//       return std::round(10.0 * time) / 10.0;
+//     }
+//   };
 
-  explicit ArborMultimeter(const std::string& name);
-  ArborMultimeter(const ArborMultimeter&) = default;
-  ArborMultimeter(ArborMultimeter&&) = default;
-  ~ArborMultimeter() = default;
+//   explicit ArborMultimeter(const std::string& name);
+//   ArborMultimeter(const ArborMultimeter&) = default;
+//   ArborMultimeter(ArborMultimeter&&) = default;
+//   ~ArborMultimeter() = default;
 
-  ArborMultimeter& operator=(const ArborMultimeter&) = default;
-  ArborMultimeter& operator=(ArborMultimeter&&) = default;
+//   ArborMultimeter& operator=(const ArborMultimeter&) = default;
+//   ArborMultimeter& operator=(ArborMultimeter&&) = default;
 
-  void RecordImplementation(const Datum& datum);
+//   void RecordImplementation(const Datum& datum);
 
- private:
-  layout::Multimeter ConstructPath(const Datum& datum);
-};
+//  private:
+//   layout::Multimeter ConstructPath(const Datum& datum);
+// };
 
-}  // namespace producer
-}  // namespace nesci
+// }  // namespace producer
+// }  // namespace nesci
 
 #endif  // PRODUCER_INCLUDE_NESCI_PRODUCER_ARBOR_MULTIMETER_HPP_
diff --git a/producer/include/nesci/producer/device.hpp b/producer/include/nesci/producer/device.hpp
index e976b32603c6782fadc727c6eec40ee87c265a08..b9e038ecb94787eff15367de78cdcb87223ec583 100644
--- a/producer/include/nesci/producer/device.hpp
+++ b/producer/include/nesci/producer/device.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -33,7 +33,7 @@ SUPPRESS_WARNINGS_BEGIN
 #include "conduit/conduit_node.hpp"
 SUPPRESS_WARNINGS_END
 
-#include "nesci/layout/device.hpp"
+#include "nesci/data_type.hpp"
 
 namespace conduit {
 
@@ -47,12 +47,6 @@ namespace producer {
 
 class Device {
  public:
-  struct Datum {
-    using Device_t = Device;
-
-    double time;
-  };
-
   Device() = delete;
   Device(const Device&) = default;
   Device(Device&&) = default;
@@ -61,35 +55,62 @@ class Device {
   Device& operator=(const Device&) = default;
   Device& operator=(Device&&) = default;
 
-  template <typename Datum_t>
-  void Record(const Datum_t& datum);
-
   inline conduit::Node& node() { return node_; }
   inline const conduit::Node& node() const { return node_; }
 
- protected:
-  explicit Device(const std::string& name);
+  virtual void Clear();
 
-  layout::Device ConstructPath(const Datum& datum);
+  inline size_t GetRecordCount() { return record_count_; }
+  inline DataType GetDataType() { return data_type_; }
+
+ protected:
+  Device(DataType data_type, size_t additional_info_size, size_t record_size,
+         std::string name = "");
 
   const std::string& GetName() { return name_; }
 
+  inline size_t GetAdditionalInfoOffset() { return general_info_size_; }
+  inline size_t GetRecordOffset() {
+    return general_info_size_ + additional_info_size_;
+  }
+  inline size_t GetRecordStride() { return record_size_; }
+  inline conduit::Schema& schema() { return schema_; }
+
+  template <typename T = uint8_t>
+  T* PrepareRecord() {
+    return reinterpret_cast<T*>(PrepareRecordInternal());
+  }
+  void FinalizeRecord();
+
+  template <typename T>
+  inline T* GetAdditionalInfoData(size_t offset = 0) {
+    assert(offset + sizeof(T) <= additional_info_size_);
+    assert(offset % 8 == 0);
+    return reinterpret_cast<T*>(buffer_.data() +
+                                (general_info_size_ + offset) / 8);
+  }
+
  private:
-  std::string name_{""};
+  DataType data_type_;
+  std::string name_;
   conduit::Node node_;
+  size_t general_info_size_;
+  size_t additional_info_size_;
+  size_t record_size_;
+  size_t record_count_;
+  std::vector<uint64_t> buffer_;
+  conduit::Schema schema_;
+
+  void* PrepareRecordInternal();
+
+  template <typename T>
+  inline T* GetGeneralInfoData(size_t offset = 0) {
+    assert(offset + sizeof(T) <= general_info_size_);
+    assert(offset % 8 == 0);
+    return reinterpret_cast<T*>(buffer_.data() + offset / 8);
+  }
 };
 
-template <>
-inline void Device::Record(const Datum& /*datum*/) {}
-
-template <typename Datum_t>
-inline void Device::Record(const Datum_t& datum) {
-  static_assert(std::is_base_of<Device, typename Datum_t::Device_t>::value,
-                "The class must derive from nesci::producer::Device");
-  assert(dynamic_cast<typename Datum_t::Device_t*>(this) != nullptr);
-  static_cast<typename Datum_t::Device_t*>(this)->RecordImplementation(datum);
-}
-
 }  // namespace producer
 }  // namespace nesci
 
diff --git a/producer/include/nesci/producer/nest_multimeter.hpp b/producer/include/nesci/producer/nest_multimeter.hpp
index dcfb360cadeefdbdcd1119c7a61498074d298802..550143508615c52e14ece91be2085be39ce0e974 100644
--- a/producer/include/nesci/producer/nest_multimeter.hpp
+++ b/producer/include/nesci/producer/nest_multimeter.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -27,29 +27,20 @@
 #include <string>
 #include <vector>
 
-#include "nesci/layout/multimeter.hpp"
 #include "nesci/producer/device.hpp"
 
+static_assert(sizeof(double) == 8, "");
+
 namespace nesci {
 namespace producer {
 
 class NestMultimeter final : public Device {
  public:
-  struct Datum : public Device::Datum {
-    using Device_t = NestMultimeter;
-
-    Datum(double time, const std::string& neuron_id,
-          const std::vector<double>& values)
-        : Device::Datum{time}, neuron_id{neuron_id}, values{values} {}
-    Datum(double time, std::size_t neuron_id, const std::vector<double>& values)
-        : Datum{time, NestMultimeter::IdString(neuron_id), values} {}
-    std::string neuron_id;
-    std::vector<double> values;
-  };
-
   NestMultimeter() = delete;
-  NestMultimeter(const std::string& name,
-                 const std::vector<std::string>& value_names);
+  NestMultimeter(std::string device_name,
+                 std::vector<std::string> double_value_names,
+                 std::vector<std::string> long_value_names,
+                 size_t estimated_node_count = 100);
   NestMultimeter(const NestMultimeter&) = default;
   NestMultimeter(NestMultimeter&&) = default;
   ~NestMultimeter() override = default;
@@ -57,16 +48,16 @@ class NestMultimeter final : public Device {
   NestMultimeter& operator=(const NestMultimeter&) = default;
   NestMultimeter& operator=(NestMultimeter&&) = default;
 
-  void RecordImplementation(const Datum& datum);
+  void Record(double time, uint64_t node_id, const double* double_values,
+              const long* long_values);  // NOLINT
 
  private:
-  static std::string IdString(std::size_t id);
-
-  layout::Multimeter ConstructPath(const Datum& datum,
-                                   std::size_t attribute_index);
+  std::vector<std::string> double_value_names_;
+  std::vector<std::string> long_value_names_;
 
-  std::vector<std::string> value_names_;
-};  // namespace producer
+  double GetTimestep();
+  void SetTimestep(double timestep);
+};
 
 }  // namespace producer
 }  // namespace nesci
diff --git a/producer/include/nesci/producer/producer.hpp b/producer/include/nesci/producer/producer.hpp
index df14a5162e6825c871f27d40c9797be88aa826e3..6c38a10e22dcef0ca05f82559bb249a7e0135afa 100644
--- a/producer/include/nesci/producer/producer.hpp
+++ b/producer/include/nesci/producer/producer.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
diff --git a/producer/include/nesci/producer/spike_detector.hpp b/producer/include/nesci/producer/spike_detector.hpp
index a496ec0676d74c334ab0cc8186b42eb90528a096..fecc4383237d1e43a5e42ece7b9c00a6a541be08 100644
--- a/producer/include/nesci/producer/spike_detector.hpp
+++ b/producer/include/nesci/producer/spike_detector.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -33,17 +33,8 @@ namespace producer {
 
 class SpikeDetector final : public Device {
  public:
-  struct Datum : public Device::Datum {
-    using Device_t = SpikeDetector;
-
-    Datum(double time, std::size_t neuron_id)
-        : Device::Datum{time}, neuron_id{neuron_id} {}
-
-    std::size_t neuron_id;
-  };
-
   SpikeDetector() = delete;
-  explicit SpikeDetector(const std::string& name);
+  explicit SpikeDetector(const std::string& name = "");
   SpikeDetector(const SpikeDetector&) = default;
   SpikeDetector(SpikeDetector&&) = default;
   ~SpikeDetector() override = default;
@@ -51,11 +42,13 @@ class SpikeDetector final : public Device {
   SpikeDetector& operator=(const SpikeDetector&) = default;
   SpikeDetector& operator=(SpikeDetector&&) = default;
 
-  void Record(const Datum& datum);
+  void Record(double time, uint64_t node_id);
 
  private:
-  std::vector<std::size_t> GetData(const conduit::Node& node);
-  std::vector<std::size_t> AsVector(const conduit::uint64_array& array);
+  struct Datum {
+    double time;
+    uint64_t node_id;
+  };
 };
 
 }  // namespace producer
diff --git a/producer/src/arbor_multimeter.cpp b/producer/src/arbor_multimeter.cpp
index 8bd9ccb2221eb4f27b768480d0a8a5974ff10426..567a547353a7d4ca82f9fad97978bfa1b16b489d 100644
--- a/producer/src/arbor_multimeter.cpp
+++ b/producer/src/arbor_multimeter.cpp
@@ -1,54 +1,54 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <cmath>
-
-#include <memory>
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include "conduit/conduit_node.hpp"
-
-#include "nesci/layout/multimeter.hpp"
-#include "nesci/producer/arbor_multimeter.hpp"
-
-namespace nesci {
-namespace producer {
-
-ArborMultimeter::ArborMultimeter(const std::string& name) : Device{name} {}
-
-void ArborMultimeter::RecordImplementation(
-    const ArborMultimeter::Datum& datum) {
-  const layout::Multimeter path{ConstructPath(datum)};
-  node().fetch(path.GetPath()) = datum.value;
-}
-
-layout::Multimeter ArborMultimeter::ConstructPath(
-    const ArborMultimeter::Datum& datum) {
-  layout::Multimeter path{Device::ConstructPath(datum)};
-  path.SetAttribute(datum.attribute);
-  path.SetNeuronId(datum.id);
-  return path;
-}
-
-}  // namespace producer
-}  // namespace nesci
+// //------------------------------------------------------------------------------
+// // nesci -- neuronal simulator conan interface
+// //
+// // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// // Virtual Reality & Immersive Visualisation Group.
+// //------------------------------------------------------------------------------
+// //                                 License
+// //
+// // Licensed under the Apache License, Version 2.0 (the "License");
+// // you may not use this file except in compliance with the License.
+// // You may obtain a copy of the License at
+// //
+// //     http://www.apache.org/licenses/LICENSE-2.0
+// //
+// // Unless required by applicable law or agreed to in writing, software
+// // distributed under the License is distributed on an "AS IS" BASIS,
+// // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// // See the License for the specific language governing permissions and
+// // limitations under the License.
+// //------------------------------------------------------------------------------
+
+// #include <cmath>
+
+// #include <memory>
+// #include <sstream>
+// #include <string>
+// #include <vector>
+
+// #include "conduit/conduit_node.hpp"
+
+// #include "nesci/layout/multimeter.hpp"
+// #include "nesci/producer/arbor_multimeter.hpp"
+
+// namespace nesci {
+// namespace producer {
+
+// ArborMultimeter::ArborMultimeter(const std::string& name) : Device{name} {}
+
+// void ArborMultimeter::RecordImplementation(
+//     const ArborMultimeter::Datum& datum) {
+//   const layout::Multimeter path{ConstructPath(datum)};
+//   node().fetch(path.GetPath()) = datum.value;
+// }
+
+// layout::Multimeter ArborMultimeter::ConstructPath(
+//     const ArborMultimeter::Datum& datum) {
+//   layout::Multimeter path{Device::ConstructPath(datum)};
+//   path.SetAttribute(datum.attribute);
+//   path.SetNeuronId(datum.id);
+//   return path;
+// }
+
+// }  // namespace producer
+// }  // namespace nesci
diff --git a/producer/src/device.cpp b/producer/src/device.cpp
index dd7e19f1bef9845290229f0708ae7da1d7297484..953db50c481dc92c9613719fdba7f4f1179e7d80 100644
--- a/producer/src/device.cpp
+++ b/producer/src/device.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -23,18 +23,48 @@
 #include <string>
 #include <vector>
 
-#include "nesci/layout/device.hpp"
+#include "nesci/device_layout.hpp"
 #include "nesci/producer/device.hpp"
 
 namespace nesci {
 namespace producer {
 
-Device::Device(const std::string& name) : name_(name) {}
+Device::Device(DataType data_type, size_t additional_info_size,
+               size_t record_size, std::string name)
+    : data_type_(data_type),
+      name_(std::move(name)),
+      general_info_size_(8),
+      additional_info_size_(additional_info_size),
+      record_size_(record_size),
+      record_count_(0) {
+  assert(additional_info_size % 8 == 0);
+  assert(record_size % 8 == 0);
+  buffer_.resize(general_info_size_ + additional_info_size_);
 
-layout::Device Device::ConstructPath(const Datum& datum) {
-  layout::Device path(name_);
-  path.SetTime(datum.time);
-  return path;
+  schema_[nesci::layout::device::GetTypePath()] = conduit::DataType::uint64();
+  *GetGeneralInfoData<DataType>() = data_type;
+}
+
+void Device::FinalizeRecord() { node_.set_external(schema_, buffer_.data()); }
+
+void Device::Clear() {
+  node_.reset();
+  record_count_ = 0;
+}
+
+void* Device::PrepareRecordInternal() {
+  ++record_count_;
+  assert((general_info_size_ + additional_info_size_ +
+          record_count_ * record_size_) %
+             8 ==
+         0);
+  buffer_.resize((general_info_size_ + additional_info_size_ +
+                  record_count_ * record_size_) /
+                 8);
+  return reinterpret_cast<void*>(buffer_.data() +
+                                 (general_info_size_ + additional_info_size_ +
+                                  (record_count_ - 1) * record_size_) /
+                                     8);
 }
 
 }  // namespace producer
diff --git a/producer/src/nest_multimeter.cpp b/producer/src/nest_multimeter.cpp
index 57fdc3cb67d10529b794773476274f58b161cc41..f6c4e5ae4e4ce9325918827cd1461c761f06b87b 100644
--- a/producer/src/nest_multimeter.cpp
+++ b/producer/src/nest_multimeter.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -20,41 +20,104 @@
 //------------------------------------------------------------------------------
 
 #include <cassert>
+#include <cmath>
 
+#include <limits>
 #include <memory>
 #include <string>
 #include <vector>
 
-#include "nesci/layout/multimeter.hpp"
-#include "nesci/layout/utility.hpp"
+#include "conduit/conduit_data_type.hpp"
+#include "nesci/nest_multimeter_layout.hpp"
 #include "nesci/producer/nest_multimeter.hpp"
 
 namespace nesci {
 namespace producer {
 
-NestMultimeter::NestMultimeter(const std::string& name,
-                               const std::vector<std::string>& value_names)
-    : Device{name}, value_names_{value_names} {}
+namespace device_layout = nesci::layout::nest_multimeter;
 
-void NestMultimeter::RecordImplementation(const Datum& datum) {
-  assert(datum.values.size() == value_names_.size());
+NestMultimeter::NestMultimeter(std::string device_name,
+                               std::vector<std::string> double_value_names,
+                               std::vector<std::string> long_value_names,
+                               size_t)
+    : Device(DataType::NEST_MULTIMETER, 8,
+             8 * (1 + double_value_names.size() + long_value_names.size()),
+             device_name),
+      double_value_names_{std::move(double_value_names)},
+      long_value_names_{std::move(long_value_names)} {
+  schema()[device_layout::GetTimestepPath()] = conduit::DataType::float64(
+      1, static_cast<conduit::index_t>(GetAdditionalInfoOffset()));
 
-  for (std::size_t i = 0u; i < datum.values.size(); ++i) {
-    const layout::Multimeter path{ConstructPath(datum, i)};
-    node().fetch(path.GetPath()) = datum.values[i];
+  conduit::index_t current_offset =
+      static_cast<conduit::index_t>(GetRecordOffset());
+  const conduit::index_t record_stride =
+      static_cast<conduit::index_t>(GetRecordStride());
+
+  schema()[device_layout::GetNeuronIdsPath()] =
+      conduit::DataType::uint64(0, current_offset, record_stride);  // NOLINT
+  current_offset += 8;
+
+  for (const auto& name : double_value_names_) {
+    schema()[device_layout::GetPathForAttribute(name)] =
+        conduit::DataType::float64(0, current_offset, record_stride);
+    current_offset += 8;
+  }
+
+  for (const auto& name : long_value_names_) {
+    schema()[device_layout::GetPathForAttribute(name)] =
+        conduit::DataType::int64(0, current_offset, record_stride);  // NOLINT
+    current_offset += 8;
+  }
+}
+
+void NestMultimeter::Record(double time, uint64_t node_id,
+                            const double* double_values,
+                            const long* long_values) {  // NOLINT
+  if (GetRecordCount() > 0 && GetTimestep() != time) {
+    throw std::runtime_error(
+        "The device data needs to be cleared before changing the timestep.");
+  }
+  if (GetRecordCount() == 0) {
+    SetTimestep(time);
   }
+
+  auto record_pointer = PrepareRecord();
+  conduit::index_t record_count =
+      static_cast<conduit::index_t>(GetRecordCount());
+
+  // Set node id
+  *reinterpret_cast<uint64_t*>(record_pointer) = node_id;
+  schema()[device_layout::GetNeuronIdsPath()].dtype().set_number_of_elements(
+      record_count);
+  record_pointer += 8;
+
+  // Set double values
+  for (size_t i = 0; i < double_value_names_.size(); ++i) {
+    *reinterpret_cast<double*>(record_pointer) = double_values[i];
+    schema()[device_layout::GetPathForAttribute(double_value_names_[i])]
+        .dtype()
+        .set_number_of_elements(record_count);
+    record_pointer += 8;
+  }
+
+  // Set long values
+  for (size_t i = 0; i < long_value_names_.size(); ++i) {
+    *reinterpret_cast<int64_t*>(record_pointer) = long_values[i];
+    schema()[device_layout::GetPathForAttribute(long_value_names_[i])]
+        .dtype()
+        .set_number_of_elements(record_count);
+    record_pointer += 8;
+  }
+
+  FinalizeRecord();
 }
 
-std::string NestMultimeter::IdString(std::size_t id) {
-  return layout::utility::to_string(id);
+double NestMultimeter::GetTimestep() {
+  return *GetAdditionalInfoData<double>();
 }
 
-layout::Multimeter NestMultimeter::ConstructPath(
-    const NestMultimeter::Datum& datum, std::size_t attribute_index) {
-  layout::Multimeter path{Device::ConstructPath(datum)};
-  path.SetAttribute(value_names_[attribute_index]);
-  path.SetNeuronId(datum.neuron_id);
-  return path;
+void NestMultimeter::SetTimestep(double timestep) {
+  *GetAdditionalInfoData<double>() = timestep;
 }
 
 }  // namespace producer
diff --git a/producer/src/producer.cpp b/producer/src/producer.cpp
index 8d2092e6ecaad16ce8ed1b3ab344c5415f472210..ba1960efa1da3fc0034e96e977932e1334eb42ac 100644
--- a/producer/src/producer.cpp
+++ b/producer/src/producer.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
diff --git a/producer/src/spike_detector.cpp b/producer/src/spike_detector.cpp
index dbb40f2be72324a88f049e6e19a60089c2f53bbc..e7cd06ced9a0d49700d5715e4fc966b4abd75053 100644
--- a/producer/src/spike_detector.cpp
+++ b/producer/src/spike_detector.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -24,34 +24,38 @@
 #include <vector>
 
 #include "nesci/producer/spike_detector.hpp"
+#include "nesci/spike_detector_layout.hpp"
 
 namespace nesci {
 namespace producer {
 
-SpikeDetector::SpikeDetector(const std::string& name) : Device{name} {}
-
-void SpikeDetector::Record(const Datum& datum) {
-  auto& recording_node = node().fetch(ConstructPath(datum).GetPath());
-
-  std::vector<std::size_t> data{GetData(recording_node)};
-  data.push_back(datum.neuron_id);
-  recording_node.set_uint64_vector(data);
-}
-
-std::vector<std::size_t> SpikeDetector::GetData(const conduit::Node& node) {
-  if (node.total_bytes_allocated() != 0) {
-    return AsVector(node.as_uint64_array());
-  }
-  return std::vector<std::size_t>();
+namespace device_layout = nesci::layout::spike_detector;
+
+SpikeDetector::SpikeDetector(const std::string& name)
+    : Device{DataType::SPIKE_DETECTOR, 0, sizeof(Datum), name} {
+  conduit::index_t current_offset =
+      static_cast<conduit::index_t>(GetRecordOffset());
+  const conduit::index_t record_stride =
+      static_cast<conduit::index_t>(GetRecordStride());
+  schema()[device_layout::GetTimesPath()] =
+      conduit::DataType::float64(0, current_offset, record_stride);
+  current_offset += 8;
+  schema()[device_layout::GetNeuronIdsPath()] =
+      conduit::DataType::uint64(0, current_offset, record_stride);  // NOLINT
 }
 
-std::vector<std::size_t> SpikeDetector::AsVector(
-    const conduit::uint64_array& array) {
-  const std::size_t num_elements =
-      static_cast<std::size_t>(array.number_of_elements());
-  const auto* begin = reinterpret_cast<std::size_t*>(array.data_ptr());
-  const auto* end = begin + num_elements;
-  return std::vector<std::size_t>(begin, end);
+void SpikeDetector::Record(double time, uint64_t node_id) {
+  auto datum = PrepareRecord<Datum>();
+  datum->time = time;
+  datum->node_id = node_id;
+
+  conduit::index_t record_count =
+      static_cast<conduit::index_t>(GetRecordCount());
+  schema()[device_layout::GetNeuronIdsPath()].dtype().set_number_of_elements(
+      record_count);
+  schema()[device_layout::GetTimesPath()].dtype().set_number_of_elements(
+      record_count);
+  FinalizeRecord();
 }
 
 }  // namespace producer
diff --git a/producer/tests/CMakeLists.txt b/producer/tests/CMakeLists.txt
index f4935d2ca36f59d2a1252d0e0670ab00a172b1f1..8427c6e0548be22254eb767ffa869fcb9fceee43 100644
--- a/producer/tests/CMakeLists.txt
+++ b/producer/tests/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,30 +19,19 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB PRODUCER_TEST_SOURCES *.cpp)
-file(GLOB PRODUCER_TEST_HEADERS *.hpp)
-
-rwthvr_add_executable(
+add_target(
+  EXECUTABLE
   NAME producer_tests
-  SOURCES ${PRODUCER_TEST_SOURCES} 
-  HEADERS ${PRODUCER_TEST_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/producer_tests/suppress_warnings.hpp"
-  )
-  
-target_include_directories(producer_tests
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-set(PRODUCER_TESTS_ARGUMENTS ""
-  CACHE STRING
-  "Arguments, e.g., tags, that are passed to producer_tests executable."
-  )
-add_test(NAME producer_tests
-  COMMAND producer_tests ${PRODUCER_TESTS_ARGUMENTS}
-  )
+  SOURCE_GLOB *.cpp
+  HEADER_GLOB *.hpp
+  DEPENDENCIES
+    PRIVATE nesci::producer
+    PRIVATE nesci::testing
+  SKIP_INSTALL
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-target_link_libraries(producer_tests
-  PRIVATE nesci_producer
-  PRIVATE testing
-  PRIVATE ${CONAN_OR_CMAKE_catch}
-  )
+add_test(
+  NAME producer_tests
+  COMMAND producer_tests
+)
diff --git a/producer/tests/test_arbor_multimeter.cpp b/producer/tests/test_arbor_multimeter.cpp
index d2ca9123a32f29e0da42eadde1c400e67920a143..8acd0db0e6ece5f12b31c94bb5a77c4f4aa7239b 100644
--- a/producer/tests/test_arbor_multimeter.cpp
+++ b/producer/tests/test_arbor_multimeter.cpp
@@ -1,56 +1,56 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
+// //------------------------------------------------------------------------------
+// // nesci -- neuronal simulator conan interface
+// //
+// // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// // Virtual Reality & Immersive Visualisation Group.
+// //------------------------------------------------------------------------------
+// //                                 License
+// //
+// // Licensed under the Apache License, Version 2.0 (the "License");
+// // you may not use this file except in compliance with the License.
+// // You may obtain a copy of the License at
+// //
+// //     http://www.apache.org/licenses/LICENSE-2.0
+// //
+// // Unless required by applicable law or agreed to in writing, software
+// // distributed under the License is distributed on an "AS IS" BASIS,
+// // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// // See the License for the specific language governing permissions and
+// // limitations under the License.
+// //------------------------------------------------------------------------------
 
-#include <memory>
-#include <sstream>
-#include <string>
-#include <vector>
+// #include <memory>
+// #include <sstream>
+// #include <string>
+// #include <vector>
 
-#include "catch/catch.hpp"
+// #include "catch2/catch.hpp"
 
-#include "conduit/conduit.hpp"
+// #include "conduit/conduit.hpp"
 
-#include "nesci/producer/arbor_multimeter.hpp"
-#include "nesci/testing/data.hpp"
+// #include "nesci/producer/arbor_multimeter.hpp"
+// #include "nesci/testing/data.hpp"
 
-SCENARIO("A arbor multimeter records to a conduit node",
-         "[nesci][nesci::ArborMultimeter]") {
-  GIVEN("A conduit node and a multimeter") {
-    nesci::producer::ArborMultimeter multimeter{
-        nesci::testing::ANY_MULTIMETER_NAME};
-    WHEN("recording data") {
-      nesci::producer::ArborMultimeter::Datum datum{
-          nesci::testing::ANY_TIME + nesci::testing::ANY_TIME_OFFSET,
-          nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING,
-          nesci::testing::ANY_DATA_VALUE};
-      multimeter.Record(datum);
-      THEN("the data is properly recorded") {
-        auto node = multimeter.node();
-        REQUIRE(
-            node[nesci::testing::PathFor(nesci::testing::ANY_MULTIMETER_NAME,
-                                         nesci::testing::ANY_TIME_STRING,
-                                         nesci::testing::ANOTHER_ATTRIBUTE,
-                                         nesci::testing::THIRD_ID_STRING)]
-                .as_double() == Approx(nesci::testing::ANY_DATA_VALUE));
-      }
-    }
-  }
-}
+// SCENARIO("A arbor multimeter records to a conduit node",
+//          "[nesci][nesci::ArborMultimeter]") {
+//   GIVEN("A conduit node and a multimeter") {
+//     nesci::producer::ArborMultimeter multimeter{
+//         nesci::testing::ANY_MULTIMETER_NAME};
+//     WHEN("recording data") {
+//       nesci::producer::ArborMultimeter::Datum datum{
+//           nesci::testing::ANY_TIME + nesci::testing::ANY_TIME_OFFSET,
+//           nesci::testing::ANOTHER_ATTRIBUTE, nesci::testing::THIRD_ID_STRING,
+//           nesci::testing::ANY_DATA_VALUE};
+//       multimeter.Record(datum);
+//       THEN("the data is properly recorded") {
+//         auto node = multimeter.node();
+//         REQUIRE(
+//             node[nesci::testing::PathFor(nesci::testing::ANY_MULTIMETER_NAME,
+//                                          nesci::testing::ANY_TIME_STRING,
+//                                          nesci::testing::ANOTHER_ATTRIBUTE,
+//                                          nesci::testing::THIRD_ID_STRING)]
+//                 .as_double() == Approx(nesci::testing::ANY_DATA_VALUE));
+//       }
+//     }
+//   }
+// }
diff --git a/producer/tests/test_nest_multimeter.cpp b/producer/tests/test_nest_multimeter.cpp
index 6f377d6e6bc0dc3619a7be982874109e8984b080..30f794d8294a11105d5e0e8a05e6bf8977901864 100644
--- a/producer/tests/test_nest_multimeter.cpp
+++ b/producer/tests/test_nest_multimeter.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -23,54 +23,111 @@
 #include <string>
 #include <vector>
 
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 
 #include "conduit/conduit_node.hpp"
 
+#include "nesci/nest_multimeter_layout.hpp"
 #include "nesci/producer/nest_multimeter.hpp"
 #include "nesci/testing/data.hpp"
 
+namespace device_layout = nesci::layout::nest_multimeter;
+
 SCENARIO("A nest multimeter records to a conduit node",
          "[nesci][nesci::NestMultimeter]") {
   GIVEN("A conduit node and a multimeter") {
     nesci::producer::NestMultimeter multimeter{
-        nesci::testing::ANY_MULTIMETER_NAME, nesci::testing::ANY_ATTRIBUTES};
+        nesci::testing::ANY_MULTIMETER_NAME,
+        nesci::testing::ANY_DOUBLE_ATTRIBUTES,
+        nesci::testing::ANY_LONG_ATTRIBUTES};
     WHEN("recording data") {
-      nesci::producer::NestMultimeter::Datum datum{
-          nesci::testing::ANY_TIME, nesci::testing::ANY_ID,
-          nesci::testing::ANY_DATA_VALUES_FOR_ATTRIBUTES};
-      multimeter.Record(datum);
+      multimeter.Record(nesci::testing::ANY_TIME, nesci::testing::ANY_ID,
+                        nesci::testing::ANY_DOUBLE_VALUES.data(),
+                        nesci::testing::ANY_LONG_VALUES.data());
+      conduit::Node node = multimeter.node();
+      std::cout << "Node after first record";
+      node.print();
+
+      THEN("the node is compact") { REQUIRE(node.is_compact() == true); }
+
       THEN("data is properly recorded") {
-        auto node = multimeter.node();
-        REQUIRE(
-            node[nesci::testing::PathFor(nesci::testing::ANY_MULTIMETER_NAME,
-                                         nesci::testing::ANY_TIME_STRING,
-                                         nesci::testing::ANY_ATTRIBUTE,
-                                         nesci::testing::ANY_ID_STRING)]
-                .as_double() ==
-            Approx(nesci::testing::ValueAt(nesci::testing::ANY_TIME_INDEX,
-                                           nesci::testing::ANY_ATTRIBUTE_INDEX,
-                                           nesci::testing::ANY_ID_INDEX)));
-
-        REQUIRE(
-            node[nesci::testing::PathFor(nesci::testing::ANY_MULTIMETER_NAME,
-                                         nesci::testing::ANY_TIME_STRING,
-                                         nesci::testing::ANOTHER_ATTRIBUTE,
-                                         nesci::testing::ANY_ID_STRING)]
-                .as_double() == Approx(nesci::testing::ValueAt(
-                                    nesci::testing::ANY_TIME_INDEX,
-                                    nesci::testing::ANOTHER_ATTRIBUTE_INDEX,
-                                    nesci::testing::ANY_ID_INDEX)));
-
-        REQUIRE(
-            node[nesci::testing::PathFor(nesci::testing::ANY_MULTIMETER_NAME,
-                                         nesci::testing::ANY_TIME_STRING,
-                                         nesci::testing::THIRD_ATTRIBUTE,
-                                         nesci::testing::ANY_ID_STRING)]
-                .as_double() == Approx(nesci::testing::ValueAt(
-                                    nesci::testing::ANY_TIME_INDEX,
-                                    nesci::testing::THIRD_ATTRIBUTE_INDEX,
-                                    nesci::testing::ANY_ID_INDEX)));
+        REQUIRE(node[device_layout::GetNeuronIdsPath()].as_uint64() ==
+                nesci::testing::ANY_ID);
+
+        for (size_t i = 0; i < nesci::testing::ANY_DOUBLE_ATTRIBUTES.size();
+             ++i) {
+          REQUIRE(node[device_layout::GetPathForAttribute(
+                           nesci::testing::ANY_DOUBLE_ATTRIBUTES[i])]
+                      .as_double() ==
+                  Approx(nesci::testing::ANY_DOUBLE_VALUES[i]));
+        }
+
+        for (size_t i = 0; i < nesci::testing::ANY_LONG_ATTRIBUTES.size();
+             ++i) {
+          REQUIRE(node[device_layout::GetPathForAttribute(
+                           nesci::testing::ANY_LONG_ATTRIBUTES[i])]
+                      .as_int64() ==
+                  Approx(nesci::testing::ANY_LONG_VALUES[i]));
+        }
+      }
+      WHEN("recording additional data") {
+        multimeter.Record(nesci::testing::ANY_TIME, nesci::testing::OTHER_ID,
+                          nesci::testing::OTHER_DOUBLE_VALUES.data(),
+                          nesci::testing::OTHER_LONG_VALUES.data());
+        node = multimeter.node();
+        std::cout << "Node after second record";
+        node.print();
+
+        THEN("the node is compact") { REQUIRE(node.is_compact() == true); }
+
+        const auto ids =
+            node[device_layout::GetNeuronIdsPath()].as_uint64_array();
+
+        THEN("data is properly recorded") {
+          REQUIRE(ids.number_of_elements() == 2);
+          REQUIRE(ids[1] == nesci::testing::OTHER_ID);
+
+          for (size_t i = 0; i < nesci::testing::ANY_DOUBLE_ATTRIBUTES.size();
+               ++i) {
+            const auto values =
+                node[device_layout::GetPathForAttribute(
+                         nesci::testing::ANY_DOUBLE_ATTRIBUTES[i])]
+                    .as_double_array();
+            REQUIRE(values.number_of_elements() == 2);
+            REQUIRE(values[1] ==
+                    Approx(nesci::testing::OTHER_DOUBLE_VALUES[i]));
+          }
+
+          for (size_t i = 0; i < nesci::testing::ANY_LONG_ATTRIBUTES.size();
+               ++i) {
+            const auto values =
+                node[device_layout::GetPathForAttribute(
+                         nesci::testing::ANY_LONG_ATTRIBUTES[i])]
+                    .as_int64_array();
+            REQUIRE(values.number_of_elements() == 2);
+            REQUIRE(values[1] == Approx(nesci::testing::OTHER_LONG_VALUES[i]));
+          }
+        }
+
+        THEN("the old data is still there") {
+          REQUIRE(node[device_layout::GetNeuronIdsPath()].as_uint64() ==
+                  nesci::testing::ANY_ID);
+
+          for (size_t i = 0; i < nesci::testing::ANY_DOUBLE_ATTRIBUTES.size();
+               ++i) {
+            REQUIRE(node[device_layout::GetPathForAttribute(
+                             nesci::testing::ANY_DOUBLE_ATTRIBUTES[i])]
+                        .as_double() ==
+                    Approx(nesci::testing::ANY_DOUBLE_VALUES[i]));
+          }
+
+          for (size_t i = 0; i < nesci::testing::ANY_LONG_ATTRIBUTES.size();
+               ++i) {
+            REQUIRE(node[device_layout::GetPathForAttribute(
+                             nesci::testing::ANY_LONG_ATTRIBUTES[i])]
+                        .as_int64() == nesci::testing::ANY_LONG_VALUES[i]);
+          }
+        }
       }
     }
   }
diff --git a/producer/tests/test_producer.cpp b/producer/tests/test_producer.cpp
index 521f42b9932df1f2143f276a85ec57aff98ab43f..df6fac81b0c3166d784d38517c768ffa09791b50 100644
--- a/producer/tests/test_producer.cpp
+++ b/producer/tests/test_producer.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,9 +19,9 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "producer_tests/suppress_warnings.hpp"
+#include "nesci/producer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
 #include "nesci/producer/producer.hpp"
 #include "utilities/cout_capture.hpp"
diff --git a/producer/tests/test_spike_detector.cpp b/producer/tests/test_spike_detector.cpp
index 4803586061043fbc4cfcdf381aafb47cd72973ba..052d80c190d418a9bcba05a44d876660a3e14f0b 100644
--- a/producer/tests/test_spike_detector.cpp
+++ b/producer/tests/test_spike_detector.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -22,13 +22,16 @@
 #include <memory>
 #include <string>
 
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 
 #include "conduit/conduit_node.hpp"
 
 #include "nesci/producer/spike_detector.hpp"
+#include "nesci/spike_detector_layout.hpp"
 #include "nesci/testing/data.hpp"
 
+namespace device_layout = nesci::layout::spike_detector;
+
 SCENARIO("A spike detector records to a conduit node",
          "[nesci][nesci::SpikeDetector]") {
   GIVEN("a conduit node and a spike detector") {
@@ -36,24 +39,34 @@ SCENARIO("A spike detector records to a conduit node",
         nesci::testing::ANY_SPIKE_DETECTOR_NAME);
 
     WHEN("recording") {
-      spike_detector.Record(nesci::producer::SpikeDetector::Datum{
-          nesci::testing::ANY_TIME, nesci::testing::ANY_ID});
+      spike_detector.Record(nesci::testing::ANY_TIME, nesci::testing::ANY_ID);
       THEN("data is recorded in the node") {
-        const auto recorded_node =
-            spike_detector.node()[nesci::testing::ANY_SPIKE_DETECTOR_NAME]
-                                 [nesci::testing::ANY_TIME_STRING];
-        REQUIRE(recorded_node.as_uint64_array()[0] == nesci::testing::ANY_ID);
+        const auto node_ids =
+            spike_detector.node()[device_layout::GetNeuronIdsPath()]
+                .as_uint64_array();
+        const auto times = spike_detector.node()[device_layout::GetTimesPath()]
+                               .as_float64_array();
+        REQUIRE(node_ids.number_of_elements() == 1);
+        REQUIRE(node_ids[0] == nesci::testing::ANY_ID);
+        REQUIRE(times.number_of_elements() == 1);
+        REQUIRE(times[0] == nesci::testing::ANY_TIME);
       }
       WHEN("recording another spike") {
-        spike_detector.Record(
-            {nesci::testing::ANY_TIME, nesci::testing::ANOTHER_ID});
+        spike_detector.Record(nesci::testing::OTHER_TIME,
+                              nesci::testing::OTHER_ID);
         THEN("data is recorded in the node") {
-          const auto recorded_node =
-              spike_detector.node()[nesci::testing::ANY_SPIKE_DETECTOR_NAME]
-                                   [nesci::testing::ANY_TIME_STRING];
-          REQUIRE(recorded_node.as_uint64_array()[0] == nesci::testing::ANY_ID);
-          REQUIRE(recorded_node.as_uint64_array()[1] ==
-                  nesci::testing::ANOTHER_ID);
+          const auto node_ids =
+              spike_detector.node()[device_layout::GetNeuronIdsPath()]
+                  .as_uint64_array();
+          const auto times =
+              spike_detector.node()[device_layout::GetTimesPath()]
+                  .as_float64_array();
+          REQUIRE(node_ids.number_of_elements() == 2);
+          REQUIRE(node_ids[0] == nesci::testing::ANY_ID);
+          REQUIRE(node_ids[1] == nesci::testing::OTHER_ID);
+          REQUIRE(times.number_of_elements() == 2);
+          REQUIRE(times[0] == nesci::testing::ANY_TIME);
+          REQUIRE(times[1] == nesci::testing::OTHER_TIME);
         }
       }
     }
diff --git a/producer/tests/tests.cpp b/producer/tests/tests.cpp
index f8bf2cdda2f0ad052239f451d9b49fc19f49cd92..371e877847097957bc8115a87da50fd0e4806348 100644
--- a/producer/tests/tests.cpp
+++ b/producer/tests/tests.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -19,8 +19,8 @@
 // limitations under the License.
 //------------------------------------------------------------------------------
 
-#include "producer_tests/suppress_warnings.hpp"
+#include "nesci/producer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
 #define CATCH_CONFIG_MAIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
diff --git a/producer/tests/utilities/cout_capture.hpp b/producer/tests/utilities/cout_capture.hpp
index f35875ef742b6e31e7238028f37cd8c4eadbe8c5..08a231e2e73ed1744c45746b042b0d0ac0d5fdd6 100644
--- a/producer/tests/utilities/cout_capture.hpp
+++ b/producer/tests/utilities/cout_capture.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -26,9 +26,9 @@
 #include <sstream>
 #include <string>
 
-#include "producer_tests/suppress_warnings.hpp"
+#include "nesci/producer_tests/suppress_warnings.hpp"
 SUPPRESS_WARNINGS_BEGIN
-#include "catch/catch.hpp"
+#include "catch2/catch.hpp"
 SUPPRESS_WARNINGS_END
 
 namespace test_utilities {
diff --git a/pynesci/src/CMakeLists.txt b/pynesci/src/CMakeLists.txt
index a183226911a22671e10a4d09b8348d739679ea03..0c4480487ad6d25c571058520e6f290536ad186c 100644
--- a/pynesci/src/CMakeLists.txt
+++ b/pynesci/src/CMakeLists.txt
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -34,8 +34,9 @@ add_python_module(
   HEADERS ${HEADERS}
   PYTHON_SOURCES ${PYTHON_SOURCES}
   INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}
-  LINK_LIBRARIES ${CONAN_OR_CMAKE_boost_python} ${CONAN_OR_CMAKE_conduit}
+  LINK_LIBRARIES Boost::python${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR} Boost::disable_autolinking conduit nesci::nesci
   OUTPUT_DIRECTORY ${PYNESCI_OUTPUT_DIR}
   )
 
+add_subdirectory(testing)
 add_subdirectory(consumer)
diff --git a/pynesci/src/__init__.py b/pynesci/src/__init__.py
index 454ba136cbf3e1f628514290617aa190fdfdc349..4e3e5510ae71eb98cb86a6cd2563917e55c0d9a1 100644
--- a/pynesci/src/__init__.py
+++ b/pynesci/src/__init__.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,5 +19,5 @@
 # limitations under the License.
 # -------------------------------------------------------------------------------
 
-from _pynesci import *
-from consumer import *
+from . _pynesci import *
+from . consumer import *
diff --git a/pynesci/src/consumer/CMakeLists.txt b/pynesci/src/consumer/CMakeLists.txt
index ddf727a94ca61ee81994de4f90ff68aeb7bc68dc..de0783f26e71a2d21a2373505b3b6922c8788cb6 100644
--- a/pynesci/src/consumer/CMakeLists.txt
+++ b/pynesci/src/consumer/CMakeLists.txt
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -34,7 +34,6 @@ add_python_module(
   HEADERS ${HEADERS}
   PYTHON_SOURCES ${PYTHON_SOURCES}
   INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}
-  LINK_LIBRARIES nesci_consumer
-    ${CONAN_OR_CMAKE_boost_python}
+  LINK_LIBRARIES Boost::python${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR} Boost::disable_autolinking conduit nesci::nesci nesci::consumer
   OUTPUT_DIRECTORY ${PYCONSUMER_OUTPUT_DIR}
   )
diff --git a/pynesci/src/consumer/__init__.py b/pynesci/src/consumer/__init__.py
index 09f3aff7c7d4a36dd7b4883afc382f855138add6..350db487773e34c5fc1cb991ba804f55e6f6ac80 100644
--- a/pynesci/src/consumer/__init__.py
+++ b/pynesci/src/consumer/__init__.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,4 +19,4 @@
 # limitations under the License.
 # -------------------------------------------------------------------------------
 
-from _pyconsumer import *
+from . _pyconsumer import *
diff --git a/pynesci/src/consumer/arbor_multimeter.cpp b/pynesci/src/consumer/arbor_multimeter.cpp
deleted file mode 100644
index 082592c0c075a48442a80868fa3f49ab27c331d5..0000000000000000000000000000000000000000
--- a/pynesci/src/consumer/arbor_multimeter.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "nesci/consumer/arbor_multimeter.hpp"
-#include "pyconsumer.hpp"
-#include "pynesci/suppress_warnings.hpp"
-
-namespace pynesci {
-namespace consumer {
-
-SUPPRESS_WARNINGS_BEGIN
-
-boost::python::list GetArborMultimeterTimestepData(
-    nesci::consumer::ArborMultimeter* arbor_multimeter, const std::string& time,
-    const std::string& attribute) {
-  boost::python::list ret_val;
-  for (const auto& data : arbor_multimeter->GetTimestepData(time, attribute)) {
-    ret_val.append(data);
-  }
-  return ret_val;
-}
-
-boost::python::list GetArborTimeSeriesData(
-    nesci::consumer::ArborMultimeter* arbor_multimeter,
-    const std::string& attribute, const std::string& neuron_id) {
-  boost::python::list ret_val;
-  for (const auto& data :
-       arbor_multimeter->GetTimeSeriesData(attribute, neuron_id)) {
-    ret_val.append(data);
-  }
-  return ret_val;
-}
-
-template <>
-void expose<nesci::consumer::ArborMultimeter>() {
-  class_<nesci::consumer::ArborMultimeter, bases<nesci::consumer::Multimeter>>(
-      "ArborMultimeter", init<const std::string&>())
-      .def("GetTimestepData", &GetArborMultimeterTimestepData)
-      .def("GetTimeSeriesData", &GetArborTimeSeriesData)
-      .def("GetDatum", &nesci::consumer::ArborMultimeter::GetDatum);
-}
-
-SUPPRESS_WARNINGS_END
-
-}  // namespace consumer
-}  // namespace pynesci
diff --git a/pynesci/src/consumer/device.cpp b/pynesci/src/consumer/device.cpp
deleted file mode 100644
index f5a1b663552de7c3d29031904554316cf67c9ee2..0000000000000000000000000000000000000000
--- a/pynesci/src/consumer/device.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "nesci/consumer/device.hpp"
-#include "pyconsumer.hpp"
-#include "pynesci/suppress_warnings.hpp"
-
-namespace pynesci {
-namespace consumer {
-
-SUPPRESS_WARNINGS_BEGIN
-boost::python::list GetDeviceTimesteps(nesci::consumer::Device* device) {
-  boost::python::list ret_val;
-  for (const auto& timestep : device->GetTimesteps()) {
-    ret_val.append(timestep);
-  }
-  return ret_val;
-}
-
-void SetDeviceNode(nesci::consumer::Device* device, const conduit::Node& node) {
-  device->SetNode(&const_cast<conduit::Node&>(node));
-}
-
-template <>
-void expose<nesci::consumer::Device>() {
-  class_<nesci::consumer::Device>("Device", init<const std::string&>())
-      .def("GetTimesteps", &GetDeviceTimesteps)
-      .def("SetNode", &SetDeviceNode);
-}
-
-SUPPRESS_WARNINGS_END
-
-}  // namespace consumer
-}  // namespace pynesci
diff --git a/pynesci/src/consumer/spike_detector.cpp b/pynesci/src/consumer/device_data_view.hpp
similarity index 66%
rename from pynesci/src/consumer/spike_detector.cpp
rename to pynesci/src/consumer/device_data_view.hpp
index 88bebd1192aff8bed593580539c6a75e9988493e..95872b1be8822199d79c2e3e70318bbe0f62bd3b 100644
--- a/pynesci/src/consumer/spike_detector.cpp
+++ b/pynesci/src/consumer/device_data_view.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -21,7 +21,8 @@
 
 #include <string>
 
-#include "nesci/consumer/spike_detector.hpp"
+#include "boost/python.hpp"
+#include "nesci/consumer/device_data_view.hpp"
 #include "pyconsumer.hpp"
 #include "pynesci/suppress_warnings.hpp"
 
@@ -30,20 +31,12 @@ namespace consumer {
 
 SUPPRESS_WARNINGS_BEGIN
 
-boost::python::list GetSpikeDetectorNeuronIds(
-    nesci::consumer::SpikeDetector* nest_multimeter, const std::string& time) {
-  boost::python::list ret_val;
-  for (const auto& data : nest_multimeter->GetNeuronIds(time)) {
-    ret_val.append(data);
-  }
-  return ret_val;
-}
-
-template <>
-void expose<nesci::consumer::SpikeDetector>() {
-  class_<nesci::consumer::SpikeDetector, bases<nesci::consumer::Device>>(
-      "SpikeDetector", init<const std::string&>())
-      .def("GetNeuronIds", &GetSpikeDetectorNeuronIds);
+void ExposeDeviceDataView() {
+  class_<nesci::consumer::DeviceDataView>("DeviceDataView",
+                                          init<const conduit::Node*>())
+      .def("HasName", &nesci::consumer::DeviceDataView::HasName)
+      .def("GetDeviceName", &nesci::consumer::DeviceDataView::GetName)
+      .def("GetDeviceType", &nesci::consumer::DeviceDataView::GetType);
 }
 
 SUPPRESS_WARNINGS_END
diff --git a/pynesci/src/consumer/multimeter.cpp b/pynesci/src/consumer/multimeter.cpp
deleted file mode 100644
index 12ace8a17e6bf207abfe2bc07ecb26134bdfff19..0000000000000000000000000000000000000000
--- a/pynesci/src/consumer/multimeter.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-//------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
-//
-// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
-// Virtual Reality & Immersive Visualisation Group.
-//------------------------------------------------------------------------------
-//                                 License
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//------------------------------------------------------------------------------
-
-#include <string>
-
-#include "nesci/consumer/multimeter.hpp"
-#include "pyconsumer.hpp"
-#include "pynesci/suppress_warnings.hpp"
-
-namespace pynesci {
-namespace consumer {
-
-SUPPRESS_WARNINGS_BEGIN
-
-boost::python::list GetMultimeterAttributes(
-    nesci::consumer::Multimeter* multimeter, const std::string& time) {
-  boost::python::list ret_val;
-  for (const auto& attribute : multimeter->GetAttributes(time)) {
-    ret_val.append(attribute);
-  }
-  return ret_val;
-}
-
-boost::python::list GetMultimeterNeuronIds(
-    nesci::consumer::Multimeter* multimeter, const std::string& time,
-    const std::string& attribute) {
-  boost::python::list ret_val;
-  for (const auto& neuron_id : multimeter->GetNeuronIds(time, attribute)) {
-    ret_val.append(neuron_id);
-  }
-  return ret_val;
-}
-
-template <>
-void expose<nesci::consumer::Multimeter>() {
-  class_<nesci::consumer::Multimeter, bases<nesci::consumer::Device>>(
-      "Multimeter", init<const std::string&>())
-      .def("GetAttributes", &GetMultimeterAttributes)
-      .def("GetNeuronIds", &GetMultimeterNeuronIds);
-}
-
-SUPPRESS_WARNINGS_END
-
-}  // namespace consumer
-}  // namespace pynesci
diff --git a/pynesci/src/consumer/nest_multimeter_data_view.hpp b/pynesci/src/consumer/nest_multimeter_data_view.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..cfd3b7bff022f3bce7d8ace05f0f350036da3267
--- /dev/null
+++ b/pynesci/src/consumer/nest_multimeter_data_view.hpp
@@ -0,0 +1,107 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualisation Group.
+//------------------------------------------------------------------------------
+//                                 License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#include <string>
+
+#include "nesci/consumer/nest_multimeter_data_view.hpp"
+#include "pyconsumer.hpp"
+#include "pynesci/suppress_warnings.hpp"
+
+namespace pynesci {
+namespace consumer {
+
+SUPPRESS_WARNINGS_BEGIN
+
+boost::python::list GetNestMultimeterNeuronIds(
+    nesci::consumer::NestMultimeterDataView* multimeter) {
+  boost::python::list ret_val;
+  const auto neuron_ids = multimeter->GetNeuronIds();
+  for (conduit::index_t i = 0, count = neuron_ids.number_of_elements();
+       i < count; ++i) {
+    ret_val.append(neuron_ids[i]);
+  }
+  return ret_val;
+}
+
+boost::python::list GetNestMultimeterIntegerAttributeNames(
+    nesci::consumer::NestMultimeterDataView* multimeter) {
+  boost::python::list ret_val;
+  for (const auto& data : multimeter->GetIntegerAttributeNames()) {
+    ret_val.append(data);
+  }
+  return ret_val;
+}
+
+boost::python::list GetNestMultimeterFloatingPointAttributeNames(
+    nesci::consumer::NestMultimeterDataView* multimeter) {
+  boost::python::list ret_val;
+  for (const auto& data : multimeter->GetFloatingPointAttributeNames()) {
+    ret_val.append(data);
+  }
+  return ret_val;
+}
+
+boost::python::list GetNestMultimeterIntegerAttributeValues(
+    nesci::consumer::NestMultimeterDataView* multimeter,
+    const std::string& attribute) {
+  boost::python::list ret_val;
+  const auto int_attributes = multimeter->GetIntegerAttributeValues(attribute);
+  for (conduit::index_t i = 0, count = int_attributes.number_of_elements();
+       i < count; ++i) {
+    ret_val.append(int_attributes[i]);
+  }
+  return ret_val;
+}
+
+boost::python::list GetNestMultimeterFloatingPointAttributeValues(
+    nesci::consumer::NestMultimeterDataView* multimeter,
+    const std::string& attribute) {
+  boost::python::list ret_val;
+  const auto float_attributes =
+      multimeter->GetFloatingPointAttributeValues(attribute);
+  for (conduit::index_t i = 0, count = float_attributes.number_of_elements();
+       i < count; ++i) {
+    ret_val.append(float_attributes[i]);
+  }
+  return ret_val;
+}
+
+void ExposeNestMultimeterDataView() {
+  class_<nesci::consumer::NestMultimeterDataView,
+         bases<nesci::consumer::DeviceDataView>>("NestMultimeterDataView",
+                                                 init<const conduit::Node*>())
+      .def("IsValid", &nesci::consumer::NestMultimeterDataView::IsValid)
+      .def("GetTimestep", &nesci::consumer::NestMultimeterDataView::GetTimestep)
+      .def("GetNeuronIds",
+           &nesci::consumer::NestMultimeterDataView::GetNeuronIds)
+      .def("GetIntegerAttributeNames", &GetNestMultimeterNeuronIds)
+      .def("GetFloatingPointAttributeNames",
+           &GetNestMultimeterFloatingPointAttributeNames)
+      .def("GetIntegerAttributeValues",
+           &GetNestMultimeterIntegerAttributeValues)
+      .def("GetFloatingPointAttributeValues",
+           &GetNestMultimeterFloatingPointAttributeValues);
+}
+
+SUPPRESS_WARNINGS_END
+
+}  // namespace consumer
+}  // namespace pynesci
diff --git a/pynesci/src/consumer/pyconsumer.cpp b/pynesci/src/consumer/pyconsumer.cpp
index 24042dbbab0e897db5221a313937a5fa2f62ce3b..9d26538697c207729105fb6557642a8211f33074 100644
--- a/pynesci/src/consumer/pyconsumer.cpp
+++ b/pynesci/src/consumer/pyconsumer.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -21,11 +21,9 @@
 
 #include "pyconsumer.hpp"
 #include <string>
-#include "nesci/consumer/arbor_multimeter.hpp"
-#include "nesci/consumer/device.hpp"
-#include "nesci/consumer/multimeter.hpp"
-#include "nesci/consumer/nest_multimeter.hpp"
-#include "nesci/consumer/spike_detector.hpp"
+#include "device_data_view.hpp"
+#include "nest_multimeter_data_view.hpp"
+#include "spike_detector_data_view.hpp"
 
 namespace pynesci {
 namespace consumer {
@@ -40,11 +38,9 @@ SUPPRESS_WARNINGS_BEGIN
 BOOST_PYTHON_MODULE(_pyconsumer) {
   def("Greet", &Greet);
   class_<conduit::Node>("Node");
-  expose<nesci::consumer::Device>();
-  expose<nesci::consumer::Multimeter>();
-  expose<nesci::consumer::NestMultimeter>();
-  expose<nesci::consumer::SpikeDetector>();
-  expose<nesci::consumer::ArborMultimeter>();
+  ExposeDeviceDataView();
+  ExposeNestMultimeterDataView();
+  ExposeSpikeDetectorDataView();
 }
 SUPPRESS_WARNINGS_END
 
diff --git a/pynesci/src/consumer/pyconsumer.hpp b/pynesci/src/consumer/pyconsumer.hpp
index 0ef58e3a6705921eea0a907f8ffa3219362914b1..a0b52dfd951951daa52ad89053d8e7512ffdfdae 100644
--- a/pynesci/src/consumer/pyconsumer.hpp
+++ b/pynesci/src/consumer/pyconsumer.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -41,14 +41,6 @@ using boost::python::no_init;
 using boost::python::pure_virtual;
 using boost::python::scope;
 using boost::python::wrapper;
-
-namespace pynesci {
-namespace consumer {
-
-template <typename T>
-void expose();
-
-}  // namespace consumer
-}  // namespace pynesci
+using boost::python::enum_;
 
 #endif  // PYNESCI_SRC_CONSUMER_PYCONSUMER_HPP_
diff --git a/pynesci/src/consumer/nest_multimeter.cpp b/pynesci/src/consumer/spike_detector_data_view.hpp
similarity index 53%
rename from pynesci/src/consumer/nest_multimeter.cpp
rename to pynesci/src/consumer/spike_detector_data_view.hpp
index 6405bf84d48fe98dfbf61f6b6a36583141f69b54..f44c863f6946f9fa7c0dfe6db81ac14a07b2f1cb 100644
--- a/pynesci/src/consumer/nest_multimeter.cpp
+++ b/pynesci/src/consumer/spike_detector_data_view.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -21,7 +21,7 @@
 
 #include <string>
 
-#include "nesci/consumer/nest_multimeter.hpp"
+#include "nesci/consumer/spike_detector_data_view.hpp"
 #include "pyconsumer.hpp"
 #include "pynesci/suppress_warnings.hpp"
 
@@ -30,34 +30,35 @@ namespace consumer {
 
 SUPPRESS_WARNINGS_BEGIN
 
-boost::python::list GetNestMultimeterTimestepData(
-    nesci::consumer::NestMultimeter* nest_multimeter, const std::string& time,
-    const std::string& attribute) {
+boost::python::list GetSpikeDetectorTimesteps(
+    nesci::consumer::SpikeDetectorDataView* spike_detector) {
   boost::python::list ret_val;
-  for (const auto& data : nest_multimeter->GetTimestepData(time, attribute)) {
-    ret_val.append(data);
+  const auto timesteps = spike_detector->GetTimesteps();
+  for (conduit::index_t i = 0, count = timesteps.number_of_elements();
+       i < count; ++i) {
+    ret_val.append(timesteps[i]);
   }
   return ret_val;
 }
 
-boost::python::list GetNestTimeSeriesData(
-    nesci::consumer::NestMultimeter* nest_multimeter,
-    const std::string& attribute, const std::string& neuron_id) {
+boost::python::list GetSpikeDetectorNeuronIds(
+    nesci::consumer::SpikeDetectorDataView* spike_detector) {
   boost::python::list ret_val;
-  for (const auto& data :
-       nest_multimeter->GetTimeSeriesData(attribute, neuron_id)) {
-    ret_val.append(data);
+  const auto neuron_ids = spike_detector->GetNeuronIds();
+  for (conduit::index_t i = 0, count = neuron_ids.number_of_elements();
+       i < count; ++i) {
+    ret_val.append(neuron_ids[i]);
   }
   return ret_val;
 }
 
-template <>
-void expose<nesci::consumer::NestMultimeter>() {
-  class_<nesci::consumer::NestMultimeter, bases<nesci::consumer::Multimeter>>(
-      "NestMultimeter", init<const std::string&>())
-      .def("GetTimestepData", &GetNestMultimeterTimestepData)
-      .def("GetTimeSeriesData", &GetNestTimeSeriesData)
-      .def("GetDatum", &nesci::consumer::NestMultimeter::GetDatum);
+void ExposeSpikeDetectorDataView() {
+  class_<nesci::consumer::SpikeDetectorDataView,
+         bases<nesci::consumer::DeviceDataView>>("SpikeDetectorDataView",
+                                                 init<const conduit::Node*>())
+      .def("IsValid", &nesci::consumer::SpikeDetectorDataView::IsValid)
+      .def("GetTimesteps", &GetSpikeDetectorTimesteps)
+      .def("GetNeuronIds", &GetSpikeDetectorNeuronIds);
 }
 
 SUPPRESS_WARNINGS_END
diff --git a/pynesci/src/pynesci.cpp b/pynesci/src/pynesci.cpp
index c9d9bd8601d54045e4df9dd3fd4deef78915a56e..1cc2e4632926ae76bd19459bda004a0489641231 100644
--- a/pynesci/src/pynesci.cpp
+++ b/pynesci/src/pynesci.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -22,6 +22,19 @@
 #include "pynesci.hpp"
 #include <string>
 #include "conduit/conduit_node.hpp"
+#include "nesci/data_type.hpp"
+
+using boost::noncopyable;
+using boost::python::args;
+using boost::python::bases;
+using boost::python::class_;
+using boost::python::def;
+using boost::python::enum_;
+using boost::python::init;
+using boost::python::no_init;
+using boost::python::pure_virtual;
+using boost::python::scope;
+using boost::python::wrapper;
 
 namespace pynesci {
 
@@ -31,7 +44,14 @@ std::string Greet() { return "G'day!"; }
 
 SUPPRESS_WARNINGS_BEGIN
 // cppcheck-suppress unusedFunction
-BOOST_PYTHON_MODULE(_pynesci) { def("Greet", &Greet); }
+BOOST_PYTHON_MODULE(_pynesci) {
+  def("Greet", &Greet);
+
+  enum_<nesci::DataType>("DataType")
+      .value("Other", nesci::DataType::OTHER)
+      .value("NestMultimeter", nesci::DataType::NEST_MULTIMETER)
+      .value("SpikeDetector", nesci::DataType::SPIKE_DETECTOR);
+}
 SUPPRESS_WARNINGS_END
 
 }  // namespace pynesci
diff --git a/pynesci/src/pynesci.hpp b/pynesci/src/pynesci.hpp
index 6621625cc28fc58e3c93ca3a175d594eeb7f664a..f7765fce5195dc38a6f59c6a099de2616efd70b3 100644
--- a/pynesci/src/pynesci.hpp
+++ b/pynesci/src/pynesci.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2017-2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualisation Group.
@@ -31,22 +31,5 @@ SUPPRESS_WARNINGS_BEGIN
 #include "boost/python.hpp"
 SUPPRESS_WARNINGS_END
 
-using boost::noncopyable;
-using boost::python::args;
-using boost::python::bases;
-using boost::python::class_;
-using boost::python::def;
-using boost::python::init;
-using boost::python::no_init;
-using boost::python::pure_virtual;
-using boost::python::scope;
-using boost::python::wrapper;
-
-namespace pynesci {
-
-template <typename T>
-void expose();
-
-}  // namespace pynesci
 
 #endif  // PYNESCI_SRC_PYNESCI_HPP_
diff --git a/pynesci/src/testing/CMakeLists.txt b/pynesci/src/testing/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0db67d364376aa6edd3170e545af00c546d148a1
--- /dev/null
+++ b/pynesci/src/testing/CMakeLists.txt
@@ -0,0 +1,39 @@
+# -------------------------------------------------------------------------------
+# nesci -- neuronal simulator conan interface
+#
+# Copyright (c) 2018 RWTH Aachen University, Germany,
+# Virtual Reality & Immersive Visualization Group.
+# -------------------------------------------------------------------------------
+#                                  License
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -------------------------------------------------------------------------------
+
+file(GLOB SOURCES *.cpp)
+file(GLOB HEADERS *.hpp)
+file(GLOB PYTHON_SOURCES *.py)
+
+set(PYNESCI_TESTING_OUTPUT_DIR
+  ${CMAKE_CURRENT_BINARY_DIR}/../../pynesci/testing
+  CACHE PATH "Output path for pynesci python module"
+  )
+
+add_python_module(
+  NAME _pynesci_testing
+  SOURCES ${SOURCES}
+  HEADERS ${HEADERS}
+  PYTHON_SOURCES ${PYTHON_SOURCES}
+  INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}
+  LINK_LIBRARIES Boost::python${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR} Boost::disable_autolinking conduit nesci::nesci nesci::testing
+  OUTPUT_DIRECTORY ${PYNESCI_TESTING_OUTPUT_DIR}
+  )
diff --git a/pynesci/src/testing/__init__.py b/pynesci/src/testing/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..21638a9ea3c5aca6dc7ec9fbab106f5100b374c0
--- /dev/null
+++ b/pynesci/src/testing/__init__.py
@@ -0,0 +1,22 @@
+# -------------------------------------------------------------------------------
+# nesci -- neuronal simulator conan interface
+#
+# Copyright (c) 2018 RWTH Aachen University, Germany,
+# Virtual Reality & Immersive Visualization Group.
+# -------------------------------------------------------------------------------
+#                                  License
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -------------------------------------------------------------------------------
+
+from . _pynesci_testing import *
diff --git a/pynesci/src/testing/pynesci_testing.cpp b/pynesci/src/testing/pynesci_testing.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b64c271c36e43fbd7f0bf4214a29455c8c2cf2d3
--- /dev/null
+++ b/pynesci/src/testing/pynesci_testing.cpp
@@ -0,0 +1,93 @@
+//------------------------------------------------------------------------------
+// nesci -- neuronal simulator conan interface
+//
+// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
+// Virtual Reality & Immersive Visualisation Group.
+//------------------------------------------------------------------------------
+//                                 License
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------
+
+#include "pynesci/suppress_warnings.hpp"
+SUPPRESS_WARNINGS_BEGIN
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#if __GNUC__ >= 7
+#pragma GCC diagnostic ignored "-Wregister"
+#endif
+#include "boost/python.hpp"
+SUPPRESS_WARNINGS_END
+#include "nesci/testing/data.hpp"
+
+namespace pynesci {
+namespace testing {
+
+using boost::noncopyable;
+using boost::python::args;
+using boost::python::bases;
+using boost::python::class_;
+using boost::python::def;
+using boost::python::enum_;
+using boost::python::init;
+using boost::python::list;
+using boost::python::no_init;
+using boost::python::pure_virtual;
+using boost::python::scope;
+using boost::python::wrapper;
+
+SUPPRESS_WARNINGS_BEGIN
+
+template <typename T>
+list VectorToList(const std::vector<T>& vector) {
+  list python_list;
+  for (const auto& value : vector) {
+    python_list.append(value);
+  }
+  return python_list;
+}
+
+// cppcheck-suppress unusedFunction
+BOOST_PYTHON_MODULE(_pynesci_testing) {
+  class_<conduit::Node>("Node");
+
+  scope().attr("ANY_MULTIMETER_NAME") = nesci::testing::ANY_MULTIMETER_NAME;
+  scope().attr("ANY_DOUBLE_ATTRIBUTES") =
+      VectorToList(nesci::testing::ANY_DOUBLE_ATTRIBUTES);
+  scope().attr("ANY_LONG_ATTRIBUTES") =
+      VectorToList(nesci::testing::ANY_LONG_ATTRIBUTES);
+  scope().attr("ANY_TIME") = nesci::testing::ANY_TIME;
+  scope().attr("OTHER_TIME") = nesci::testing::OTHER_TIME;
+  scope().attr("ANY_ID") = nesci::testing::ANY_ID;
+  scope().attr("OTHER_ID") = nesci::testing::OTHER_ID;
+
+  scope().attr("ANY_DOUBLE_VALUES") =
+      VectorToList(nesci::testing::ANY_DOUBLE_VALUES);
+  scope().attr("OTHER_DOUBLE_VALUES") =
+      VectorToList(nesci::testing::OTHER_DOUBLE_VALUES);
+  scope().attr("ANY_LONG_VALUES") =
+      VectorToList(nesci::testing::ANY_LONG_VALUES);
+  scope().attr("OTHER_LONG_VALUES") =
+      VectorToList(nesci::testing::OTHER_LONG_VALUES);
+  scope().attr("ANY_SPIKE_DETECTOR_NAME") =
+      nesci::testing::ANY_SPIKE_DETECTOR_NAME;
+
+  scope().attr("NestMultimeterDataNode") =
+      nesci::testing::CreateNestMultimeterDataNode();
+
+  scope().attr("SpikeDetectorDataNode") =
+      nesci::testing::CreateSpikeDetectorDataNode();
+}
+SUPPRESS_WARNINGS_END
+
+}  // namespace testing
+}  // namespace pynesci
diff --git a/pynesci/tests/test_pynesci.py b/pynesci/tests/test_pynesci.py
index 3e7f32fbf49cd9c3881f456ae6cf20ca362abcdd..5d1dd1ce0d5a9de8eec9e79406e2d14f2580d7bc 100644
--- a/pynesci/tests/test_pynesci.py
+++ b/pynesci/tests/test_pynesci.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -25,6 +25,11 @@ import pynesci
 def test_pynesci_greet():
     assert pynesci.Greet() == "G'day!"
 
+def test_pynesci_data_type():
+    assert pynesci.DataType.Other == 0
+    assert pynesci.DataType.SpikeDetector == 1
+    assert pynesci.DataType.NestMultimeter == 2
+
 
 def test_pynesci_consumer_greet():
     assert pynesci.consumer.Greet() == "G'day!"
diff --git a/pynesci/tests/test_pynesci_consumer_arbor_multimeter.py b/pynesci/tests/test_pynesci_consumer_arbor_multimeter.py
deleted file mode 100644
index 18ca6bcf95c720912adbf72e77450aaa8d429344..0000000000000000000000000000000000000000
--- a/pynesci/tests/test_pynesci_consumer_arbor_multimeter.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-# -------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# -------------------------------------------------------------------------------
-
-import pynesci
-
-
-def test_pynesci_consumer_arbor_multimeter():
-    arbor_multimeter = pynesci.consumer.ArborMultimeter(
-        "SomeArborMultimeterName")
-
-
-def test_pynesci_consumer_arbor_multimeter_get_timestep_data():
-    arbor_multimeter = pynesci.consumer.ArborMultimeter(
-        "SomeArborMultimeterName")
-    some_node = pynesci.Node()
-    arbor_multimeter.SetNode(some_node)
-    assert len(arbor_multimeter.GetTimestepData("0.0", "Attribute1")) == 0
-
-
-def test_pynesci_consumer_arbor_multimeter_get_time_series_data():
-    arbor_multimeter = pynesci.consumer.ArborMultimeter(
-        "SomeArborMultimeterName")
-    some_node = pynesci.Node()
-    arbor_multimeter.SetNode(some_node)
-    assert len(arbor_multimeter.GetTimeSeriesData(
-        "0.0", "Attribute1")) == 0
-
-
-def test_pynesci_consumer_arbor_multimeter_get_neuron_ids():
-    arbor_multimeter = pynesci.consumer.ArborMultimeter(
-        "SomeArborMultimeterName")
-    some_node = pynesci.Node()
-    arbor_multimeter.SetNode(some_node)
-    arbor_multimeter.GetDatum("0.0", "Attribute1", "aasdad")
diff --git a/pynesci/tests/test_pynesci_consumer_spike_detector.py b/pynesci/tests/test_pynesci_consumer_device_data_view.py
similarity index 69%
rename from pynesci/tests/test_pynesci_consumer_spike_detector.py
rename to pynesci/tests/test_pynesci_consumer_device_data_view.py
index 9cc107a4d62a7bfa7fb46e1489060f4dd50feabf..adbc9aca896c2fa658456944c053ff079b874858 100644
--- a/pynesci/tests/test_pynesci_consumer_spike_detector.py
+++ b/pynesci/tests/test_pynesci_consumer_device_data_view.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -20,14 +20,13 @@
 # -------------------------------------------------------------------------------
 
 import pynesci
+import pynesci.testing
 
 
-def test_pynesci_consumer_spike_detector():
-    spike_detector = pynesci.consumer.SpikeDetector("SomeSpikeDetectorName")
+def test_pynesci_consumer_device_data_view():
+    device = pynesci.consumer.DeviceDataView(pynesci.testing.SpikeDetectorDataNode)
 
 
-def test_pynesci_consumer_spike_detector_get_neuron_ids():
-    spike_detector = pynesci.consumer.SpikeDetector("SomeSpikeDetectorName")
-    some_node = pynesci.Node()
-    spike_detector.SetNode(some_node)
-    assert len(spike_detector.GetNeuronIds("0.0")) == 0
+def test_pynesci_consumer_device_data_view_get_device_name():
+    device = pynesci.consumer.DeviceDataView(pynesci.testing.SpikeDetectorDataNode)
+    assert device.GetDeviceName() == pynesci.testing.ANY_SPIKE_DETECTOR_NAME
diff --git a/pynesci/tests/test_pynesci_consumer_nest_multimeter.py b/pynesci/tests/test_pynesci_consumer_nest_multimeter.py
deleted file mode 100644
index 61575bc1dda6c67d558125365af6840c2d6c33ff..0000000000000000000000000000000000000000
--- a/pynesci/tests/test_pynesci_consumer_nest_multimeter.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
-#
-# Copyright (c) 2018 RWTH Aachen University, Germany,
-# Virtual Reality & Immersive Visualization Group.
-# -------------------------------------------------------------------------------
-#                                  License
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# -------------------------------------------------------------------------------
-
-import pynesci
-
-
-def test_pynesci_consumer_nest_multimeter():
-    nest_multimeter = pynesci.consumer.NestMultimeter("SomeNestMultimeterName")
-
-
-def test_pynesci_consumer_nest_multimeter_get_timestep_data():
-    nest_multimeter = pynesci.consumer.NestMultimeter("SomeNestMultimeterName")
-    some_node = pynesci.Node()
-    nest_multimeter.SetNode(some_node)
-    assert len(nest_multimeter.GetTimestepData("0.0", "Attribute1")) == 0
-
-
-def test_pynesci_consumer_nest_multimeter_get_time_series_data():
-    nest_multimeter = pynesci.consumer.NestMultimeter("SomeNestMultimeterName")
-    some_node = pynesci.Node()
-    nest_multimeter.SetNode(some_node)
-    assert len(nest_multimeter.GetTimeSeriesData(
-        "0.0", "Attribute1")) == 0
-
-
-def test_pynesci_consumer_nest_multimeter_get_neuron_ids():
-    nest_multimeter = pynesci.consumer.NestMultimeter("SomeNestMultimeterName")
-    some_node = pynesci.Node()
-    nest_multimeter.SetNode(some_node)
-    nest_multimeter.GetDatum("0.0", "Attribute1", "aasdad")
diff --git a/pynesci/tests/test_pynesci_consumer_multimeter.py b/pynesci/tests/test_pynesci_consumer_nest_multimeter_data_view.py
similarity index 59%
rename from pynesci/tests/test_pynesci_consumer_multimeter.py
rename to pynesci/tests/test_pynesci_consumer_nest_multimeter_data_view.py
index d939377d13591fe65fde1562bd9815fa62cc2ecf..5c0bd4a90039bc7cb83130cd2fa730fd03649b08 100644
--- a/pynesci/tests/test_pynesci_consumer_multimeter.py
+++ b/pynesci/tests/test_pynesci_consumer_nest_multimeter_data_view.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -21,20 +21,6 @@
 
 import pynesci
 
-
-def test_pynesci_consumer_multimeter():
-    multimeter = pynesci.consumer.Multimeter("SomeMultimeterName")
-
-
-def test_pynesci_consumer_multimeter_get_attributes():
-    multimeter = pynesci.consumer.Multimeter("SomeMultimeterName")
-    some_node = pynesci.Node()
-    multimeter.SetNode(some_node)
-    assert len(multimeter.GetAttributes("0.0")) == 0
-
-
-def test_pynesci_consumer_multimeter_get_neuron_ids():
-    multimeter = pynesci.consumer.Multimeter("SomeMultimeterName")
-    some_node = pynesci.Node()
-    multimeter.SetNode(some_node)
-    assert len(multimeter.GetNeuronIds("0.0", "Attribute1")) == 0
+def test_pynesci_consumer_nest_multimeter_data_view():
+    multimeter = pynesci.consumer.NestMultimeterDataView(pynesci.testing.NestMultimeterDataNode)
+    assert multimeter.IsValid()
diff --git a/pynesci/tests/test_pynesci_consumer_device.py b/pynesci/tests/test_pynesci_consumer_spike_detector_data_view.py
similarity index 76%
rename from pynesci/tests/test_pynesci_consumer_device.py
rename to pynesci/tests/test_pynesci_consumer_spike_detector_data_view.py
index e9c02dff62100a798db0a5b76acfbe0f74377d1c..22c1f65501a25160c462a1b28a7a32695ae716b7 100644
--- a/pynesci/tests/test_pynesci_consumer_device.py
+++ b/pynesci/tests/test_pynesci_consumer_spike_detector_data_view.py
@@ -1,5 +1,5 @@
 # -------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -22,11 +22,7 @@
 import pynesci
 
 
-def test_pynesci_consumer_device():
-    device = pynesci.consumer.Device("SomeDeviceName")
+def test_pynesci_consumer_spike_detector_data_view():
+    spike_detector = pynesci.consumer.SpikeDetectorDataView(pynesci.testing.SpikeDetectorDataNode)
+    spike_detector.IsValid()
 
-
-def test_pynesci_consumer_device_set_node():
-    device = pynesci.consumer.Device("SomeDeviceName")
-    some_node = pynesci.Node()
-    device.SetNode(some_node)
diff --git a/test_package/CMakeLists.txt b/test_package/CMakeLists.txt
index 92269b59d544ab944f035f4714a2cb457d9c322f..f0f0a806e99f436e81d8fcd1ed29b2a8ca1d0394 100644
--- a/test_package/CMakeLists.txt
+++ b/test_package/CMakeLists.txt
@@ -1,18 +1,31 @@
+#-------------------------------------------------------------------------------
+# nesci -- neuronal simulator conan interface
+#
+# Copyright (c) 2018 RWTH Aachen University, Germany,
+# Virtual Reality & Immersive Visualization Group.
+#-------------------------------------------------------------------------------
+#                                  License
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#-------------------------------------------------------------------------------
+
+
 project(nesci-test-package)
 cmake_minimum_required(VERSION 2.8)
 
-if (MSVC)
-  foreach(flag_var
-          CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
-          CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
-      if(${flag_var} MATCHES "/MD")
-          string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
-      endif(${flag_var} MATCHES "/MD")
-  endforeach(flag_var)
-endif (MSVC)
+set(CMAKE_CXX_STANDARD 14)
 
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-CONAN_BASIC_SETUP(TARGETS KEEP_RPATHS)
+find_package(nesci REQUIRED producer consumer)
 
 add_executable(nesci-test-package main.cpp)
-target_link_libraries(nesci-test-package CONAN_PKG::nesci)
+target_link_libraries(nesci-test-package nesci::producer nesci::consumer)
diff --git a/test_package/conanfile.py b/test_package/conanfile.py
deleted file mode 100644
index ab02f1040ef047cacd7b154031f7ea32b2e74fe5..0000000000000000000000000000000000000000
--- a/test_package/conanfile.py
+++ /dev/null
@@ -1,21 +0,0 @@
-from conans import ConanFile, CMake
-import os
-
-class NesciTestPackage(ConanFile):
-    settings = "os", "compiler", "build_type", "arch"
-    generators = "cmake"
-
-    def build(self):
-        cmake = CMake(self)
-        cmake.configure()
-        cmake.build()
-
-    def imports(self):
-        self.copy("*.dll", dst="bin", src="bin")
-        self.copy("*.dylib*", dst="bin", src="lib")
-        self.copy('*.so*', dst='bin', src='lib')
-
-    def test(self):
-        os.chdir("bin")
-        self.run(".%snesci-test-package" % os.sep)
-
diff --git a/test_package/main.cpp b/test_package/main.cpp
index 4af3cfb78d96e86a5b96d20bc879f24863e74e25..b8c4352175b94e26d8ab658e6dfbd66afd1ae91a 100644
--- a/test_package/main.cpp
+++ b/test_package/main.cpp
@@ -1,12 +1,9 @@
 #include "nesci/consumer/consumer.hpp"
-#include "nesci/layout/layout.hpp"
 #include "nesci/producer/producer.hpp"
 
 #include <iostream>
 
 int main() {
-  nesci::layout::Greet();
-  std::cout << std::endl;
   nesci::producer::Greet();
   std::cout << std::endl;
   nesci::consumer::Greet();
diff --git a/testing/CMakeLists.txt b/testing/CMakeLists.txt
index dacc48e616deeaac97f06b9d0f58bd44ffb02547..f8043b8891355d0c107cae3a09f20d181800e717 100644
--- a/testing/CMakeLists.txt
+++ b/testing/CMakeLists.txt
@@ -1,5 +1,5 @@
 #-------------------------------------------------------------------------------
-# nesci -- neural simulator conan interface
+# nesci -- neuronal simulator conan interface
 #
 # Copyright (c) 2018 RWTH Aachen University, Germany,
 # Virtual Reality & Immersive Visualization Group.
@@ -19,25 +19,20 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-file(GLOB TESTING_SOURCES src/*.cpp)
-file(GLOB TESTING_HEADERS include/nesci/testing/*.hpp)
+add_target(
+  LIBRARY
+  NAME testing
+  SOURCE_GLOB src/*.cpp
+  HEADER_GLOB include/nesci/testing/*.hpp
+  DEPENDENCIES
+    PUBLIC conduit
+    PUBLIC nesci::nesci
+  SKIP_INSTALL
+  ${GLOBAL_TARGET_OPTIONS}
+)
 
-rwthvr_add_library(NAME testing
-  SOURCES ${TESTING_SOURCES}
-  HEADERS ${TESTING_HEADERS}
-  SUPPRESS_WARNINGS_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/testing/suppress_warnings.hpp"
+if (NOT MSVC)
+  target_compile_options(testing
+    PRIVATE -fPIC
   )
-generate_export_header(testing
-  EXPORT_FILE_NAME
-  "${CMAKE_CURRENT_BINARY_DIR}/include/nesci/testing/export.hpp"
-  )
-  
-target_include_directories(testing
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-
-target_link_libraries(testing
-  PUBLIC ${CONAN_OR_CMAKE_conduit}
-  PUBLIC nesci_layout
-  )
\ No newline at end of file
+endif (NOT MSVC)
diff --git a/testing/include/catch2/LICENSE.txt b/testing/include/catch2/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..36b7cd93cdfbac762f5be4c6ce276df2ea6305c2
--- /dev/null
+++ b/testing/include/catch2/LICENSE.txt
@@ -0,0 +1,23 @@
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/testing/include/catch2/catch.hpp b/testing/include/catch2/catch.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..ac815d077d6676be0b806f599b8ac899ff754f34
--- /dev/null
+++ b/testing/include/catch2/catch.hpp
@@ -0,0 +1,14362 @@
+/*
+ *  Catch v2.5.0
+ *  Generated: 2018-11-26 20:46:12.165372
+ *  ----------------------------------------------------------
+ *  This file has been merged from multiple headers. Please don't edit it directly
+ *  Copyright (c) 2018 Two Blue Cubes Ltd. All rights reserved.
+ *
+ *  Distributed under the Boost Software License, Version 1.0. (See accompanying
+ *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+#ifndef TWOBLUECUBES_SINGLE_INCLUDE_CATCH_HPP_INCLUDED
+#define TWOBLUECUBES_SINGLE_INCLUDE_CATCH_HPP_INCLUDED
+// start catch.hpp
+
+
+#define CATCH_VERSION_MAJOR 2
+#define CATCH_VERSION_MINOR 5
+#define CATCH_VERSION_PATCH 0
+
+#ifdef __clang__
+#    pragma clang system_header
+#elif defined __GNUC__
+#    pragma GCC system_header
+#endif
+
+// start catch_suppress_warnings.h
+
+#ifdef __clang__
+#   ifdef __ICC // icpc defines the __clang__ macro
+#       pragma warning(push)
+#       pragma warning(disable: 161 1682)
+#   else // __ICC
+#       pragma clang diagnostic push
+#       pragma clang diagnostic ignored "-Wpadded"
+#       pragma clang diagnostic ignored "-Wswitch-enum"
+#       pragma clang diagnostic ignored "-Wcovered-switch-default"
+#    endif
+#elif defined __GNUC__
+     // GCC likes to warn on REQUIREs, and we cannot suppress them
+     // locally because g++'s support for _Pragma is lacking in older,
+     // still supported, versions
+#    pragma GCC diagnostic ignored "-Wparentheses"
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wunused-variable"
+#    pragma GCC diagnostic ignored "-Wpadded"
+#endif
+// end catch_suppress_warnings.h
+#if defined(CATCH_CONFIG_MAIN) || defined(CATCH_CONFIG_RUNNER)
+#  define CATCH_IMPL
+#  define CATCH_CONFIG_ALL_PARTS
+#endif
+
+// In the impl file, we want to have access to all parts of the headers
+// Can also be used to sanely support PCHs
+#if defined(CATCH_CONFIG_ALL_PARTS)
+#  define CATCH_CONFIG_EXTERNAL_INTERFACES
+#  if defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#    undef CATCH_CONFIG_DISABLE_MATCHERS
+#  endif
+#  if !defined(CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER)
+#    define CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
+#  endif
+#endif
+
+#if !defined(CATCH_CONFIG_IMPL_ONLY)
+// start catch_platform.h
+
+#ifdef __APPLE__
+# include <TargetConditionals.h>
+# if TARGET_OS_OSX == 1
+#  define CATCH_PLATFORM_MAC
+# elif TARGET_OS_IPHONE == 1
+#  define CATCH_PLATFORM_IPHONE
+# endif
+
+#elif defined(linux) || defined(__linux) || defined(__linux__)
+#  define CATCH_PLATFORM_LINUX
+
+#elif defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER) || defined(__MINGW32__)
+#  define CATCH_PLATFORM_WINDOWS
+#endif
+
+// end catch_platform.h
+
+#ifdef CATCH_IMPL
+#  ifndef CLARA_CONFIG_MAIN
+#    define CLARA_CONFIG_MAIN_NOT_DEFINED
+#    define CLARA_CONFIG_MAIN
+#  endif
+#endif
+
+// start catch_user_interfaces.h
+
+namespace Catch {
+    unsigned int rngSeed();
+}
+
+// end catch_user_interfaces.h
+// start catch_tag_alias_autoregistrar.h
+
+// start catch_common.h
+
+// start catch_compiler_capabilities.h
+
+// Detect a number of compiler features - by compiler
+// The following features are defined:
+//
+// CATCH_CONFIG_COUNTER : is the __COUNTER__ macro supported?
+// CATCH_CONFIG_WINDOWS_SEH : is Windows SEH supported?
+// CATCH_CONFIG_POSIX_SIGNALS : are POSIX signals supported?
+// CATCH_CONFIG_DISABLE_EXCEPTIONS : Are exceptions enabled?
+// ****************
+// Note to maintainers: if new toggles are added please document them
+// in configuration.md, too
+// ****************
+
+// In general each macro has a _NO_<feature name> form
+// (e.g. CATCH_CONFIG_NO_POSIX_SIGNALS) which disables the feature.
+// Many features, at point of detection, define an _INTERNAL_ macro, so they
+// can be combined, en-mass, with the _NO_ forms later.
+
+#ifdef __cplusplus
+
+#  if (__cplusplus >= 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
+#    define CATCH_CPP14_OR_GREATER
+#  endif
+
+#  if (__cplusplus >= 201703L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
+#    define CATCH_CPP17_OR_GREATER
+#  endif
+
+#endif
+
+#if defined(CATCH_CPP17_OR_GREATER)
+#  define CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS
+#endif
+
+#ifdef __clang__
+
+#       define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+            _Pragma( "clang diagnostic push" ) \
+            _Pragma( "clang diagnostic ignored \"-Wexit-time-destructors\"" ) \
+            _Pragma( "clang diagnostic ignored \"-Wglobal-constructors\"")
+#       define CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
+            _Pragma( "clang diagnostic pop" )
+
+#       define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
+            _Pragma( "clang diagnostic push" ) \
+            _Pragma( "clang diagnostic ignored \"-Wparentheses\"" )
+#       define CATCH_INTERNAL_UNSUPPRESS_PARENTHESES_WARNINGS \
+            _Pragma( "clang diagnostic pop" )
+
+#       define CATCH_INTERNAL_SUPPRESS_UNUSED_WARNINGS \
+            _Pragma( "clang diagnostic push" ) \
+            _Pragma( "clang diagnostic ignored \"-Wunused-variable\"" )
+#       define CATCH_INTERNAL_UNSUPPRESS_UNUSED_WARNINGS \
+            _Pragma( "clang diagnostic pop" )
+
+#endif // __clang__
+
+////////////////////////////////////////////////////////////////////////////////
+// Assume that non-Windows platforms support posix signals by default
+#if !defined(CATCH_PLATFORM_WINDOWS)
+    #define CATCH_INTERNAL_CONFIG_POSIX_SIGNALS
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// We know some environments not to support full POSIX signals
+#if defined(__CYGWIN__) || defined(__QNX__) || defined(__EMSCRIPTEN__) || defined(__DJGPP__)
+    #define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS
+#endif
+
+#ifdef __OS400__
+#       define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS
+#       define CATCH_CONFIG_COLOUR_NONE
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Android somehow still does not support std::to_string
+#if defined(__ANDROID__)
+#    define CATCH_INTERNAL_CONFIG_NO_CPP11_TO_STRING
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Not all Windows environments support SEH properly
+#if defined(__MINGW32__)
+#    define CATCH_INTERNAL_CONFIG_NO_WINDOWS_SEH
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// PS4
+#if defined(__ORBIS__)
+#    define CATCH_INTERNAL_CONFIG_NO_NEW_CAPTURE
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Cygwin
+#ifdef __CYGWIN__
+
+// Required for some versions of Cygwin to declare gettimeofday
+// see: http://stackoverflow.com/questions/36901803/gettimeofday-not-declared-in-this-scope-cygwin
+#   define _BSD_SOURCE
+// some versions of cygwin (most) do not support std::to_string. Use the libstd check.
+// https://gcc.gnu.org/onlinedocs/gcc-4.8.2/libstdc++/api/a01053_source.html line 2812-2813
+# if !((__cplusplus >= 201103L) && defined(_GLIBCXX_USE_C99) \
+	       && !defined(_GLIBCXX_HAVE_BROKEN_VSWPRINTF))
+
+#	define CATCH_INTERNAL_CONFIG_NO_CPP11_TO_STRING
+
+# endif
+#endif // __CYGWIN__
+
+////////////////////////////////////////////////////////////////////////////////
+// Visual C++
+#ifdef _MSC_VER
+
+#  if _MSC_VER >= 1900 // Visual Studio 2015 or newer
+#    define CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS
+#  endif
+
+// Universal Windows platform does not support SEH
+// Or console colours (or console at all...)
+#  if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
+#    define CATCH_CONFIG_COLOUR_NONE
+#  else
+#    define CATCH_INTERNAL_CONFIG_WINDOWS_SEH
+#  endif
+
+// MSVC traditional preprocessor needs some workaround for __VA_ARGS__
+// _MSVC_TRADITIONAL == 0 means new conformant preprocessor
+// _MSVC_TRADITIONAL == 1 means old traditional non-conformant preprocessor
+#  if !defined(_MSVC_TRADITIONAL) || (defined(_MSVC_TRADITIONAL) && _MSVC_TRADITIONAL)
+#    define CATCH_INTERNAL_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#  endif
+
+#endif // _MSC_VER
+
+////////////////////////////////////////////////////////////////////////////////
+// Check if we are compiled with -fno-exceptions or equivalent
+#if defined(__EXCEPTIONS) || defined(__cpp_exceptions) || defined(_CPPUNWIND)
+#  define CATCH_INTERNAL_CONFIG_EXCEPTIONS_ENABLED
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// DJGPP
+#ifdef __DJGPP__
+#  define CATCH_INTERNAL_CONFIG_NO_WCHAR
+#endif // __DJGPP__
+
+////////////////////////////////////////////////////////////////////////////////
+// Embarcadero C++Build
+#if defined(__BORLANDC__)
+    #define CATCH_INTERNAL_CONFIG_POLYFILL_ISNAN
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Use of __COUNTER__ is suppressed during code analysis in
+// CLion/AppCode 2017.2.x and former, because __COUNTER__ is not properly
+// handled by it.
+// Otherwise all supported compilers support COUNTER macro,
+// but user still might want to turn it off
+#if ( !defined(__JETBRAINS_IDE__) || __JETBRAINS_IDE__ >= 20170300L )
+    #define CATCH_INTERNAL_CONFIG_COUNTER
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Check if string_view is available and usable
+// The check is split apart to work around v140 (VS2015) preprocessor issue...
+#if defined(__has_include)
+#if __has_include(<string_view>) && defined(CATCH_CPP17_OR_GREATER)
+#    define CATCH_INTERNAL_CONFIG_CPP17_STRING_VIEW
+#endif
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Check if variant is available and usable
+#if defined(__has_include)
+#  if __has_include(<variant>) && defined(CATCH_CPP17_OR_GREATER)
+#    if defined(__clang__) && (__clang_major__ < 8)
+       // work around clang bug with libstdc++ https://bugs.llvm.org/show_bug.cgi?id=31852
+       // fix should be in clang 8, workaround in libstdc++ 8.2
+#      include <ciso646>
+#      if defined(__GLIBCXX__) && defined(_GLIBCXX_RELEASE) && (_GLIBCXX_RELEASE < 9)
+#        define CATCH_CONFIG_NO_CPP17_VARIANT
+#     else
+#        define CATCH_INTERNAL_CONFIG_CPP17_VARIANT
+#      endif // defined(__GLIBCXX__) && defined(_GLIBCXX_RELEASE) && (_GLIBCXX_RELEASE < 9)
+#    endif // defined(__clang__) && (__clang_major__ < 8)
+#  endif // __has_include(<variant>) && defined(CATCH_CPP17_OR_GREATER)
+#endif // __has_include
+
+#if defined(CATCH_INTERNAL_CONFIG_COUNTER) && !defined(CATCH_CONFIG_NO_COUNTER) && !defined(CATCH_CONFIG_COUNTER)
+#   define CATCH_CONFIG_COUNTER
+#endif
+#if defined(CATCH_INTERNAL_CONFIG_WINDOWS_SEH) && !defined(CATCH_CONFIG_NO_WINDOWS_SEH) && !defined(CATCH_CONFIG_WINDOWS_SEH) && !defined(CATCH_INTERNAL_CONFIG_NO_WINDOWS_SEH)
+#   define CATCH_CONFIG_WINDOWS_SEH
+#endif
+// This is set by default, because we assume that unix compilers are posix-signal-compatible by default.
+#if defined(CATCH_INTERNAL_CONFIG_POSIX_SIGNALS) && !defined(CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_POSIX_SIGNALS)
+#   define CATCH_CONFIG_POSIX_SIGNALS
+#endif
+// This is set by default, because we assume that compilers with no wchar_t support are just rare exceptions.
+#if !defined(CATCH_INTERNAL_CONFIG_NO_WCHAR) && !defined(CATCH_CONFIG_NO_WCHAR) && !defined(CATCH_CONFIG_WCHAR)
+#   define CATCH_CONFIG_WCHAR
+#endif
+
+#if !defined(CATCH_INTERNAL_CONFIG_NO_CPP11_TO_STRING) && !defined(CATCH_CONFIG_NO_CPP11_TO_STRING) && !defined(CATCH_CONFIG_CPP11_TO_STRING)
+#    define CATCH_CONFIG_CPP11_TO_STRING
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_CONFIG_NO_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS)
+#  define CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_CPP17_STRING_VIEW) && !defined(CATCH_CONFIG_NO_CPP17_STRING_VIEW) && !defined(CATCH_CONFIG_CPP17_STRING_VIEW)
+#  define CATCH_CONFIG_CPP17_STRING_VIEW
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_CPP17_VARIANT) && !defined(CATCH_CONFIG_NO_CPP17_VARIANT) && !defined(CATCH_CONFIG_CPP17_VARIANT)
+#  define CATCH_CONFIG_CPP17_VARIANT
+#endif
+
+#if defined(CATCH_CONFIG_EXPERIMENTAL_REDIRECT)
+#  define CATCH_INTERNAL_CONFIG_NEW_CAPTURE
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_NEW_CAPTURE) && !defined(CATCH_INTERNAL_CONFIG_NO_NEW_CAPTURE) && !defined(CATCH_CONFIG_NO_NEW_CAPTURE) && !defined(CATCH_CONFIG_NEW_CAPTURE)
+#  define CATCH_CONFIG_NEW_CAPTURE
+#endif
+
+#if !defined(CATCH_INTERNAL_CONFIG_EXCEPTIONS_ENABLED) && !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+#  define CATCH_CONFIG_DISABLE_EXCEPTIONS
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_POLYFILL_ISNAN) && !defined(CATCH_CONFIG_NO_POLYFILL_ISNAN) && !defined(CATCH_CONFIG_POLYFILL_ISNAN)
+#  define CATCH_CONFIG_POLYFILL_ISNAN
+#endif
+
+#if !defined(CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS)
+#   define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS
+#   define CATCH_INTERNAL_UNSUPPRESS_PARENTHESES_WARNINGS
+#endif
+#if !defined(CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS)
+#   define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS
+#   define CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
+#endif
+#if !defined(CATCH_INTERNAL_SUPPRESS_UNUSED_WARNINGS)
+#   define CATCH_INTERNAL_SUPPRESS_UNUSED_WARNINGS
+#   define CATCH_INTERNAL_UNSUPPRESS_UNUSED_WARNINGS
+#endif
+
+#if defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+#define CATCH_TRY if ((true))
+#define CATCH_CATCH_ALL if ((false))
+#define CATCH_CATCH_ANON(type) if ((false))
+#else
+#define CATCH_TRY try
+#define CATCH_CATCH_ALL catch (...)
+#define CATCH_CATCH_ANON(type) catch (type)
+#endif
+
+#if defined(CATCH_INTERNAL_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR) && !defined(CATCH_CONFIG_NO_TRADITIONAL_MSVC_PREPROCESSOR) && !defined(CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR)
+#define CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#endif
+
+// end catch_compiler_capabilities.h
+#define INTERNAL_CATCH_UNIQUE_NAME_LINE2( name, line ) name##line
+#define INTERNAL_CATCH_UNIQUE_NAME_LINE( name, line ) INTERNAL_CATCH_UNIQUE_NAME_LINE2( name, line )
+#ifdef CATCH_CONFIG_COUNTER
+#  define INTERNAL_CATCH_UNIQUE_NAME( name ) INTERNAL_CATCH_UNIQUE_NAME_LINE( name, __COUNTER__ )
+#else
+#  define INTERNAL_CATCH_UNIQUE_NAME( name ) INTERNAL_CATCH_UNIQUE_NAME_LINE( name, __LINE__ )
+#endif
+
+#include <iosfwd>
+#include <string>
+#include <cstdint>
+
+// We need a dummy global operator<< so we can bring it into Catch namespace later
+struct Catch_global_namespace_dummy {};
+std::ostream& operator<<(std::ostream&, Catch_global_namespace_dummy);
+
+namespace Catch {
+
+    struct CaseSensitive { enum Choice {
+        Yes,
+        No
+    }; };
+
+    class NonCopyable {
+        NonCopyable( NonCopyable const& )              = delete;
+        NonCopyable( NonCopyable && )                  = delete;
+        NonCopyable& operator = ( NonCopyable const& ) = delete;
+        NonCopyable& operator = ( NonCopyable && )     = delete;
+
+    protected:
+        NonCopyable();
+        virtual ~NonCopyable();
+    };
+
+    struct SourceLineInfo {
+
+        SourceLineInfo() = delete;
+        SourceLineInfo( char const* _file, std::size_t _line ) noexcept
+        :   file( _file ),
+            line( _line )
+        {}
+
+        SourceLineInfo( SourceLineInfo const& other )        = default;
+        SourceLineInfo( SourceLineInfo && )                  = default;
+        SourceLineInfo& operator = ( SourceLineInfo const& ) = default;
+        SourceLineInfo& operator = ( SourceLineInfo && )     = default;
+
+        bool empty() const noexcept;
+        bool operator == ( SourceLineInfo const& other ) const noexcept;
+        bool operator < ( SourceLineInfo const& other ) const noexcept;
+
+        char const* file;
+        std::size_t line;
+    };
+
+    std::ostream& operator << ( std::ostream& os, SourceLineInfo const& info );
+
+    // Bring in operator<< from global namespace into Catch namespace
+    // This is necessary because the overload of operator<< above makes
+    // lookup stop at namespace Catch
+    using ::operator<<;
+
+    // Use this in variadic streaming macros to allow
+    //    >> +StreamEndStop
+    // as well as
+    //    >> stuff +StreamEndStop
+    struct StreamEndStop {
+        std::string operator+() const;
+    };
+    template<typename T>
+    T const& operator + ( T const& value, StreamEndStop ) {
+        return value;
+    }
+}
+
+#define CATCH_INTERNAL_LINEINFO \
+    ::Catch::SourceLineInfo( __FILE__, static_cast<std::size_t>( __LINE__ ) )
+
+// end catch_common.h
+namespace Catch {
+
+    struct RegistrarForTagAliases {
+        RegistrarForTagAliases( char const* alias, char const* tag, SourceLineInfo const& lineInfo );
+    };
+
+} // end namespace Catch
+
+#define CATCH_REGISTER_TAG_ALIAS( alias, spec ) \
+    CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+    namespace{ Catch::RegistrarForTagAliases INTERNAL_CATCH_UNIQUE_NAME( AutoRegisterTagAlias )( alias, spec, CATCH_INTERNAL_LINEINFO ); } \
+    CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
+
+// end catch_tag_alias_autoregistrar.h
+// start catch_test_registry.h
+
+// start catch_interfaces_testcase.h
+
+#include <vector>
+#include <memory>
+
+namespace Catch {
+
+    class TestSpec;
+
+    struct ITestInvoker {
+        virtual void invoke () const = 0;
+        virtual ~ITestInvoker();
+    };
+
+    using ITestCasePtr = std::shared_ptr<ITestInvoker>;
+
+    class TestCase;
+    struct IConfig;
+
+    struct ITestCaseRegistry {
+        virtual ~ITestCaseRegistry();
+        virtual std::vector<TestCase> const& getAllTests() const = 0;
+        virtual std::vector<TestCase> const& getAllTestsSorted( IConfig const& config ) const = 0;
+    };
+
+    bool matchTest( TestCase const& testCase, TestSpec const& testSpec, IConfig const& config );
+    std::vector<TestCase> filterTests( std::vector<TestCase> const& testCases, TestSpec const& testSpec, IConfig const& config );
+    std::vector<TestCase> const& getAllTestCasesSorted( IConfig const& config );
+
+}
+
+// end catch_interfaces_testcase.h
+// start catch_stringref.h
+
+#include <cstddef>
+#include <string>
+#include <iosfwd>
+
+namespace Catch {
+
+    class StringData;
+
+    /// A non-owning string class (similar to the forthcoming std::string_view)
+    /// Note that, because a StringRef may be a substring of another string,
+    /// it may not be null terminated. c_str() must return a null terminated
+    /// string, however, and so the StringRef will internally take ownership
+    /// (taking a copy), if necessary. In theory this ownership is not externally
+    /// visible - but it does mean (substring) StringRefs should not be shared between
+    /// threads.
+    class StringRef {
+    public:
+        using size_type = std::size_t;
+
+    private:
+        friend struct StringRefTestAccess;
+
+        char const* m_start;
+        size_type m_size;
+
+        char* m_data = nullptr;
+
+        void takeOwnership();
+
+        static constexpr char const* const s_empty = "";
+
+    public: // construction/ assignment
+        StringRef() noexcept
+        :   StringRef( s_empty, 0 )
+        {}
+
+        StringRef( StringRef const& other ) noexcept
+        :   m_start( other.m_start ),
+            m_size( other.m_size )
+        {}
+
+        StringRef( StringRef&& other ) noexcept
+        :   m_start( other.m_start ),
+            m_size( other.m_size ),
+            m_data( other.m_data )
+        {
+            other.m_data = nullptr;
+        }
+
+        StringRef( char const* rawChars ) noexcept;
+
+        StringRef( char const* rawChars, size_type size ) noexcept
+        :   m_start( rawChars ),
+            m_size( size )
+        {}
+
+        StringRef( std::string const& stdString ) noexcept
+        :   m_start( stdString.c_str() ),
+            m_size( stdString.size() )
+        {}
+
+        ~StringRef() noexcept {
+            delete[] m_data;
+        }
+
+        auto operator = ( StringRef const &other ) noexcept -> StringRef& {
+            delete[] m_data;
+            m_data = nullptr;
+            m_start = other.m_start;
+            m_size = other.m_size;
+            return *this;
+        }
+
+        operator std::string() const;
+
+        void swap( StringRef& other ) noexcept;
+
+    public: // operators
+        auto operator == ( StringRef const& other ) const noexcept -> bool;
+        auto operator != ( StringRef const& other ) const noexcept -> bool;
+
+        auto operator[] ( size_type index ) const noexcept -> char;
+
+    public: // named queries
+        auto empty() const noexcept -> bool {
+            return m_size == 0;
+        }
+        auto size() const noexcept -> size_type {
+            return m_size;
+        }
+
+        auto numberOfCharacters() const noexcept -> size_type;
+        auto c_str() const -> char const*;
+
+    public: // substrings and searches
+        auto substr( size_type start, size_type size ) const noexcept -> StringRef;
+
+        // Returns the current start pointer.
+        // Note that the pointer can change when if the StringRef is a substring
+        auto currentData() const noexcept -> char const*;
+
+    private: // ownership queries - may not be consistent between calls
+        auto isOwned() const noexcept -> bool;
+        auto isSubstring() const noexcept -> bool;
+    };
+
+    auto operator + ( StringRef const& lhs, StringRef const& rhs ) -> std::string;
+    auto operator + ( StringRef const& lhs, char const* rhs ) -> std::string;
+    auto operator + ( char const* lhs, StringRef const& rhs ) -> std::string;
+
+    auto operator += ( std::string& lhs, StringRef const& sr ) -> std::string&;
+    auto operator << ( std::ostream& os, StringRef const& sr ) -> std::ostream&;
+
+    inline auto operator "" _sr( char const* rawChars, std::size_t size ) noexcept -> StringRef {
+        return StringRef( rawChars, size );
+    }
+
+} // namespace Catch
+
+inline auto operator "" _catch_sr( char const* rawChars, std::size_t size ) noexcept -> Catch::StringRef {
+    return Catch::StringRef( rawChars, size );
+}
+
+// end catch_stringref.h
+// start catch_type_traits.hpp
+
+
+namespace Catch{
+
+#ifdef CATCH_CPP17_OR_GREATER
+	template <typename...>
+	inline constexpr auto is_unique = std::true_type{};
+
+	template <typename T, typename... Rest>
+	inline constexpr auto is_unique<T, Rest...> = std::bool_constant<
+		(!std::is_same_v<T, Rest> && ...) && is_unique<Rest...>
+	>{};
+#else
+
+template <typename...>
+struct is_unique : std::true_type{};
+
+template <typename T0, typename T1, typename... Rest>
+struct is_unique<T0, T1, Rest...> : std::integral_constant
+<bool,
+     !std::is_same<T0, T1>::value
+     && is_unique<T0, Rest...>::value
+     && is_unique<T1, Rest...>::value
+>{};
+
+#endif
+}
+
+// end catch_type_traits.hpp
+// start catch_preprocessor.hpp
+
+
+#define CATCH_RECURSION_LEVEL0(...) __VA_ARGS__
+#define CATCH_RECURSION_LEVEL1(...) CATCH_RECURSION_LEVEL0(CATCH_RECURSION_LEVEL0(CATCH_RECURSION_LEVEL0(__VA_ARGS__)))
+#define CATCH_RECURSION_LEVEL2(...) CATCH_RECURSION_LEVEL1(CATCH_RECURSION_LEVEL1(CATCH_RECURSION_LEVEL1(__VA_ARGS__)))
+#define CATCH_RECURSION_LEVEL3(...) CATCH_RECURSION_LEVEL2(CATCH_RECURSION_LEVEL2(CATCH_RECURSION_LEVEL2(__VA_ARGS__)))
+#define CATCH_RECURSION_LEVEL4(...) CATCH_RECURSION_LEVEL3(CATCH_RECURSION_LEVEL3(CATCH_RECURSION_LEVEL3(__VA_ARGS__)))
+#define CATCH_RECURSION_LEVEL5(...) CATCH_RECURSION_LEVEL4(CATCH_RECURSION_LEVEL4(CATCH_RECURSION_LEVEL4(__VA_ARGS__)))
+
+#ifdef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define INTERNAL_CATCH_EXPAND_VARGS(...) __VA_ARGS__
+// MSVC needs more evaluations
+#define CATCH_RECURSION_LEVEL6(...) CATCH_RECURSION_LEVEL5(CATCH_RECURSION_LEVEL5(CATCH_RECURSION_LEVEL5(__VA_ARGS__)))
+#define CATCH_RECURSE(...)  CATCH_RECURSION_LEVEL6(CATCH_RECURSION_LEVEL6(__VA_ARGS__))
+#else
+#define CATCH_RECURSE(...)  CATCH_RECURSION_LEVEL5(__VA_ARGS__)
+#endif
+
+#define CATCH_REC_END(...)
+#define CATCH_REC_OUT
+
+#define CATCH_EMPTY()
+#define CATCH_DEFER(id) id CATCH_EMPTY()
+
+#define CATCH_REC_GET_END2() 0, CATCH_REC_END
+#define CATCH_REC_GET_END1(...) CATCH_REC_GET_END2
+#define CATCH_REC_GET_END(...) CATCH_REC_GET_END1
+#define CATCH_REC_NEXT0(test, next, ...) next CATCH_REC_OUT
+#define CATCH_REC_NEXT1(test, next) CATCH_DEFER ( CATCH_REC_NEXT0 ) ( test, next, 0)
+#define CATCH_REC_NEXT(test, next)  CATCH_REC_NEXT1(CATCH_REC_GET_END test, next)
+
+#define CATCH_REC_LIST0(f, x, peek, ...) , f(x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST1) ) ( f, peek, __VA_ARGS__ )
+#define CATCH_REC_LIST1(f, x, peek, ...) , f(x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST0) ) ( f, peek, __VA_ARGS__ )
+#define CATCH_REC_LIST2(f, x, peek, ...)   f(x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST1) ) ( f, peek, __VA_ARGS__ )
+
+#define CATCH_REC_LIST0_UD(f, userdata, x, peek, ...) , f(userdata, x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST1_UD) ) ( f, userdata, peek, __VA_ARGS__ )
+#define CATCH_REC_LIST1_UD(f, userdata, x, peek, ...) , f(userdata, x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST0_UD) ) ( f, userdata, peek, __VA_ARGS__ )
+#define CATCH_REC_LIST2_UD(f, userdata, x, peek, ...)   f(userdata, x) CATCH_DEFER ( CATCH_REC_NEXT(peek, CATCH_REC_LIST1_UD) ) ( f, userdata, peek, __VA_ARGS__ )
+
+// Applies the function macro `f` to each of the remaining attributes, inserts commas between the results,
+// and passes userdata as the first attribute to each invocation,
+// e.g. CATCH_REC_LIST_UD(f, x, a, b, c) evaluates to f(x, a), f(x, b), f(x, c)
+#define CATCH_REC_LIST_UD(f, userdata, ...) CATCH_RECURSE(CATCH_REC_LIST2_UD(f, userdata, __VA_ARGS__, ()()(), ()()(), ()()(), 0))
+
+#define CATCH_REC_LIST(f, ...) CATCH_RECURSE(CATCH_REC_LIST2(f, __VA_ARGS__, ()()(), ()()(), ()()(), 0))
+
+#define INTERNAL_CATCH_EXPAND1(param) INTERNAL_CATCH_EXPAND2(param)
+#define INTERNAL_CATCH_EXPAND2(...) INTERNAL_CATCH_NO## __VA_ARGS__
+#define INTERNAL_CATCH_DEF(...) INTERNAL_CATCH_DEF __VA_ARGS__
+#define INTERNAL_CATCH_NOINTERNAL_CATCH_DEF
+
+#define INTERNAL_CATCH_REMOVE_PARENS(...) INTERNAL_CATCH_EXPAND1(INTERNAL_CATCH_DEF __VA_ARGS__)
+
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME2(Name, ...) INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME3(Name, __VA_ARGS__)
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME3(Name,...) Name " - " #__VA_ARGS__
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME(Name,...) INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME2(Name, INTERNAL_CATCH_REMOVE_PARENS(__VA_ARGS__))
+#else
+// MSVC is adding extra space and needs more calls to properly remove ()
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME3(Name,...) Name " -" #__VA_ARGS__
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME1(Name, ...) INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME2(Name, __VA_ARGS__)
+#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME(Name, ...) INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME1(Name, INTERNAL_CATCH_EXPAND_VARGS(INTERNAL_CATCH_REMOVE_PARENS(__VA_ARGS__)))
+#endif
+
+// end catch_preprocessor.hpp
+namespace Catch {
+
+template<typename C>
+class TestInvokerAsMethod : public ITestInvoker {
+    void (C::*m_testAsMethod)();
+public:
+    TestInvokerAsMethod( void (C::*testAsMethod)() ) noexcept : m_testAsMethod( testAsMethod ) {}
+
+    void invoke() const override {
+        C obj;
+        (obj.*m_testAsMethod)();
+    }
+};
+
+auto makeTestInvoker( void(*testAsFunction)() ) noexcept -> ITestInvoker*;
+
+template<typename C>
+auto makeTestInvoker( void (C::*testAsMethod)() ) noexcept -> ITestInvoker* {
+    return new(std::nothrow) TestInvokerAsMethod<C>( testAsMethod );
+}
+
+struct NameAndTags {
+    NameAndTags( StringRef const& name_ = StringRef(), StringRef const& tags_ = StringRef() ) noexcept;
+    StringRef name;
+    StringRef tags;
+};
+
+struct AutoReg : NonCopyable {
+    AutoReg( ITestInvoker* invoker, SourceLineInfo const& lineInfo, StringRef const& classOrMethod, NameAndTags const& nameAndTags ) noexcept;
+    ~AutoReg();
+};
+
+} // end namespace Catch
+
+#if defined(CATCH_CONFIG_DISABLE)
+    #define INTERNAL_CATCH_TESTCASE_NO_REGISTRATION( TestName, ... ) \
+        static void TestName()
+    #define INTERNAL_CATCH_TESTCASE_METHOD_NO_REGISTRATION( TestName, ClassName, ... ) \
+        namespace{                        \
+            struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName) { \
+                void test();              \
+            };                            \
+        }                                 \
+        void TestName::test()
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_NO_REGISTRATION( TestName, ... )  \
+        template<typename TestType>                                             \
+        static void TestName()
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_NO_REGISTRATION( TestName, ClassName, ... )    \
+        namespace{                                                                                  \
+            template<typename TestType>                                                             \
+            struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName <TestType>) {     \
+                void test();                                                                        \
+            };                                                                                      \
+        }                                                                                           \
+        template<typename TestType>                                                                 \
+        void TestName::test()
+#endif
+
+    ///////////////////////////////////////////////////////////////////////////////
+    #define INTERNAL_CATCH_TESTCASE2( TestName, ... ) \
+        static void TestName(); \
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        namespace{ Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( &TestName ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ __VA_ARGS__ } ); } /* NOLINT */ \
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
+        static void TestName()
+    #define INTERNAL_CATCH_TESTCASE( ... ) \
+        INTERNAL_CATCH_TESTCASE2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), __VA_ARGS__ )
+
+    ///////////////////////////////////////////////////////////////////////////////
+    #define INTERNAL_CATCH_METHOD_AS_TEST_CASE( QualifiedMethod, ... ) \
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        namespace{ Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( &QualifiedMethod ), CATCH_INTERNAL_LINEINFO, "&" #QualifiedMethod, Catch::NameAndTags{ __VA_ARGS__ } ); } /* NOLINT */ \
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
+
+    ///////////////////////////////////////////////////////////////////////////////
+    #define INTERNAL_CATCH_TEST_CASE_METHOD2( TestName, ClassName, ... )\
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        namespace{ \
+            struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName) { \
+                void test(); \
+            }; \
+            Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar ) ( Catch::makeTestInvoker( &TestName::test ), CATCH_INTERNAL_LINEINFO, #ClassName, Catch::NameAndTags{ __VA_ARGS__ } ); /* NOLINT */ \
+        } \
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
+        void TestName::test()
+    #define INTERNAL_CATCH_TEST_CASE_METHOD( ClassName, ... ) \
+        INTERNAL_CATCH_TEST_CASE_METHOD2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), ClassName, __VA_ARGS__ )
+
+    ///////////////////////////////////////////////////////////////////////////////
+    #define INTERNAL_CATCH_REGISTER_TESTCASE( Function, ... ) \
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( Function ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ __VA_ARGS__ } ); /* NOLINT */ \
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
+
+    ///////////////////////////////////////////////////////////////////////////////
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_2(TestName, TestFunc, Name, Tags, ... )\
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        template<typename TestType> \
+        static void TestFunc();\
+        namespace {\
+            template<typename...Types> \
+            struct TestName{\
+                template<typename...Ts> \
+                TestName(Ts...names){\
+                    CATCH_INTERNAL_CHECK_UNIQUE_TYPES(CATCH_REC_LIST(INTERNAL_CATCH_REMOVE_PARENS, __VA_ARGS__)) \
+                    using expander = int[];\
+                    (void)expander{(Catch::AutoReg( Catch::makeTestInvoker( &TestFunc<Types> ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ names, Tags } ), 0)... };/* NOLINT */ \
+                }\
+            };\
+            INTERNAL_CATCH_TEMPLATE_REGISTRY_INITIATE(TestName, Name, __VA_ARGS__) \
+        }\
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
+        template<typename TestType> \
+        static void TestFunc()
+
+#if defined(CATCH_CPP17_OR_GREATER)
+#define CATCH_INTERNAL_CHECK_UNIQUE_TYPES(...) static_assert(Catch::is_unique<__VA_ARGS__>,"Duplicate type detected in declaration of template test case");
+#else
+#define CATCH_INTERNAL_CHECK_UNIQUE_TYPES(...) static_assert(Catch::is_unique<__VA_ARGS__>::value,"Duplicate type detected in declaration of template test case");
+#endif
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE(Name, Tags, ...) \
+        INTERNAL_CATCH_TEMPLATE_TEST_CASE_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ), Name, Tags, __VA_ARGS__ )
+#else
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE(Name, Tags, ...) \
+        INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ), Name, Tags, __VA_ARGS__ ) )
+#endif
+
+    #define INTERNAL_CATCH_TEMPLATE_REGISTRY_INITIATE(TestName, Name, ...)\
+        static int INTERNAL_CATCH_UNIQUE_NAME( globalRegistrar ) = [](){\
+            TestName<CATCH_REC_LIST(INTERNAL_CATCH_REMOVE_PARENS, __VA_ARGS__)>(CATCH_REC_LIST_UD(INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME,Name, __VA_ARGS__));\
+            return 0;\
+        }();
+
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_2( TestNameClass, TestName, ClassName, Name, Tags, ... ) \
+        CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        namespace{ \
+            template<typename TestType> \
+            struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName <TestType>) { \
+                void test();\
+            };\
+            template<typename...Types> \
+            struct TestNameClass{\
+                template<typename...Ts> \
+                TestNameClass(Ts...names){\
+                    CATCH_INTERNAL_CHECK_UNIQUE_TYPES(CATCH_REC_LIST(INTERNAL_CATCH_REMOVE_PARENS, __VA_ARGS__)) \
+                    using expander = int[];\
+                    (void)expander{(Catch::AutoReg( Catch::makeTestInvoker( &TestName<Types>::test ), CATCH_INTERNAL_LINEINFO, #ClassName, Catch::NameAndTags{ names, Tags } ), 0)... };/* NOLINT */ \
+                }\
+            };\
+            INTERNAL_CATCH_TEMPLATE_REGISTRY_INITIATE(TestNameClass, Name, __VA_ARGS__)\
+        }\
+        CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS\
+        template<typename TestType> \
+        void TestName<TestType>::test()
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( ClassName, Name, Tags,... ) \
+        INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____C_L_A_S_S____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) , ClassName, Name, Tags, __VA_ARGS__ )
+#else
+    #define INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( ClassName, Name, Tags,... ) \
+        INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____C_L_A_S_S____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) , ClassName, Name, Tags, __VA_ARGS__ ) )
+#endif
+
+// end catch_test_registry.h
+// start catch_capture.hpp
+
+// start catch_assertionhandler.h
+
+// start catch_assertioninfo.h
+
+// start catch_result_type.h
+
+namespace Catch {
+
+    // ResultWas::OfType enum
+    struct ResultWas { enum OfType {
+        Unknown = -1,
+        Ok = 0,
+        Info = 1,
+        Warning = 2,
+
+        FailureBit = 0x10,
+
+        ExpressionFailed = FailureBit | 1,
+        ExplicitFailure = FailureBit | 2,
+
+        Exception = 0x100 | FailureBit,
+
+        ThrewException = Exception | 1,
+        DidntThrowException = Exception | 2,
+
+        FatalErrorCondition = 0x200 | FailureBit
+
+    }; };
+
+    bool isOk( ResultWas::OfType resultType );
+    bool isJustInfo( int flags );
+
+    // ResultDisposition::Flags enum
+    struct ResultDisposition { enum Flags {
+        Normal = 0x01,
+
+        ContinueOnFailure = 0x02,   // Failures fail test, but execution continues
+        FalseTest = 0x04,           // Prefix expression with !
+        SuppressFail = 0x08         // Failures are reported but do not fail the test
+    }; };
+
+    ResultDisposition::Flags operator | ( ResultDisposition::Flags lhs, ResultDisposition::Flags rhs );
+
+    bool shouldContinueOnFailure( int flags );
+    inline bool isFalseTest( int flags ) { return ( flags & ResultDisposition::FalseTest ) != 0; }
+    bool shouldSuppressFailure( int flags );
+
+} // end namespace Catch
+
+// end catch_result_type.h
+namespace Catch {
+
+    struct AssertionInfo
+    {
+        StringRef macroName;
+        SourceLineInfo lineInfo;
+        StringRef capturedExpression;
+        ResultDisposition::Flags resultDisposition;
+
+        // We want to delete this constructor but a compiler bug in 4.8 means
+        // the struct is then treated as non-aggregate
+        //AssertionInfo() = delete;
+    };
+
+} // end namespace Catch
+
+// end catch_assertioninfo.h
+// start catch_decomposer.h
+
+// start catch_tostring.h
+
+#include <vector>
+#include <cstddef>
+#include <type_traits>
+#include <string>
+// start catch_stream.h
+
+#include <iosfwd>
+#include <cstddef>
+#include <ostream>
+
+namespace Catch {
+
+    std::ostream& cout();
+    std::ostream& cerr();
+    std::ostream& clog();
+
+    class StringRef;
+
+    struct IStream {
+        virtual ~IStream();
+        virtual std::ostream& stream() const = 0;
+    };
+
+    auto makeStream( StringRef const &filename ) -> IStream const*;
+
+    class ReusableStringStream {
+        std::size_t m_index;
+        std::ostream* m_oss;
+    public:
+        ReusableStringStream();
+        ~ReusableStringStream();
+
+        auto str() const -> std::string;
+
+        template<typename T>
+        auto operator << ( T const& value ) -> ReusableStringStream& {
+            *m_oss << value;
+            return *this;
+        }
+        auto get() -> std::ostream& { return *m_oss; }
+    };
+}
+
+// end catch_stream.h
+
+#ifdef CATCH_CONFIG_CPP17_STRING_VIEW
+#include <string_view>
+#endif
+
+#ifdef __OBJC__
+// start catch_objc_arc.hpp
+
+#import <Foundation/Foundation.h>
+
+#ifdef __has_feature
+#define CATCH_ARC_ENABLED __has_feature(objc_arc)
+#else
+#define CATCH_ARC_ENABLED 0
+#endif
+
+void arcSafeRelease( NSObject* obj );
+id performOptionalSelector( id obj, SEL sel );
+
+#if !CATCH_ARC_ENABLED
+inline void arcSafeRelease( NSObject* obj ) {
+    [obj release];
+}
+inline id performOptionalSelector( id obj, SEL sel ) {
+    if( [obj respondsToSelector: sel] )
+        return [obj performSelector: sel];
+    return nil;
+}
+#define CATCH_UNSAFE_UNRETAINED
+#define CATCH_ARC_STRONG
+#else
+inline void arcSafeRelease( NSObject* ){}
+inline id performOptionalSelector( id obj, SEL sel ) {
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+#endif
+    if( [obj respondsToSelector: sel] )
+        return [obj performSelector: sel];
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+    return nil;
+}
+#define CATCH_UNSAFE_UNRETAINED __unsafe_unretained
+#define CATCH_ARC_STRONG __strong
+#endif
+
+// end catch_objc_arc.hpp
+#endif
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable:4180) // We attempt to stream a function (address) by const&, which MSVC complains about but is harmless
+#endif
+
+namespace Catch {
+    namespace Detail {
+
+        extern const std::string unprintableString;
+
+        std::string rawMemoryToString( const void *object, std::size_t size );
+
+        template<typename T>
+        std::string rawMemoryToString( const T& object ) {
+          return rawMemoryToString( &object, sizeof(object) );
+        }
+
+        template<typename T>
+        class IsStreamInsertable {
+            template<typename SS, typename TT>
+            static auto test(int)
+                -> decltype(std::declval<SS&>() << std::declval<TT>(), std::true_type());
+
+            template<typename, typename>
+            static auto test(...)->std::false_type;
+
+        public:
+            static const bool value = decltype(test<std::ostream, const T&>(0))::value;
+        };
+
+        template<typename E>
+        std::string convertUnknownEnumToString( E e );
+
+        template<typename T>
+        typename std::enable_if<
+            !std::is_enum<T>::value && !std::is_base_of<std::exception, T>::value,
+        std::string>::type convertUnstreamable( T const& ) {
+            return Detail::unprintableString;
+        }
+        template<typename T>
+        typename std::enable_if<
+            !std::is_enum<T>::value && std::is_base_of<std::exception, T>::value,
+         std::string>::type convertUnstreamable(T const& ex) {
+            return ex.what();
+        }
+
+        template<typename T>
+        typename std::enable_if<
+            std::is_enum<T>::value
+        , std::string>::type convertUnstreamable( T const& value ) {
+            return convertUnknownEnumToString( value );
+        }
+
+#if defined(_MANAGED)
+        //! Convert a CLR string to a utf8 std::string
+        template<typename T>
+        std::string clrReferenceToString( T^ ref ) {
+            if (ref == nullptr)
+                return std::string("null");
+            auto bytes = System::Text::Encoding::UTF8->GetBytes(ref->ToString());
+            cli::pin_ptr<System::Byte> p = &bytes[0];
+            return std::string(reinterpret_cast<char const *>(p), bytes->Length);
+        }
+#endif
+
+    } // namespace Detail
+
+    // If we decide for C++14, change these to enable_if_ts
+    template <typename T, typename = void>
+    struct StringMaker {
+        template <typename Fake = T>
+        static
+        typename std::enable_if<::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>::type
+            convert(const Fake& value) {
+                ReusableStringStream rss;
+                // NB: call using the function-like syntax to avoid ambiguity with
+                // user-defined templated operator<< under clang.
+                rss.operator<<(value);
+                return rss.str();
+        }
+
+        template <typename Fake = T>
+        static
+        typename std::enable_if<!::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>::type
+            convert( const Fake& value ) {
+#if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
+            return Detail::convertUnstreamable(value);
+#else
+            return CATCH_CONFIG_FALLBACK_STRINGIFIER(value);
+#endif
+        }
+    };
+
+    namespace Detail {
+
+        // This function dispatches all stringification requests inside of Catch.
+        // Should be preferably called fully qualified, like ::Catch::Detail::stringify
+        template <typename T>
+        std::string stringify(const T& e) {
+            return ::Catch::StringMaker<typename std::remove_cv<typename std::remove_reference<T>::type>::type>::convert(e);
+        }
+
+        template<typename E>
+        std::string convertUnknownEnumToString( E e ) {
+            return ::Catch::Detail::stringify(static_cast<typename std::underlying_type<E>::type>(e));
+        }
+
+#if defined(_MANAGED)
+        template <typename T>
+        std::string stringify( T^ e ) {
+            return ::Catch::StringMaker<T^>::convert(e);
+        }
+#endif
+
+    } // namespace Detail
+
+    // Some predefined specializations
+
+    template<>
+    struct StringMaker<std::string> {
+        static std::string convert(const std::string& str);
+    };
+
+#ifdef CATCH_CONFIG_CPP17_STRING_VIEW
+    template<>
+    struct StringMaker<std::string_view> {
+        static std::string convert(std::string_view str);
+    };
+#endif
+
+    template<>
+    struct StringMaker<char const *> {
+        static std::string convert(char const * str);
+    };
+    template<>
+    struct StringMaker<char *> {
+        static std::string convert(char * str);
+    };
+
+#ifdef CATCH_CONFIG_WCHAR
+    template<>
+    struct StringMaker<std::wstring> {
+        static std::string convert(const std::wstring& wstr);
+    };
+
+# ifdef CATCH_CONFIG_CPP17_STRING_VIEW
+    template<>
+    struct StringMaker<std::wstring_view> {
+        static std::string convert(std::wstring_view str);
+    };
+# endif
+
+    template<>
+    struct StringMaker<wchar_t const *> {
+        static std::string convert(wchar_t const * str);
+    };
+    template<>
+    struct StringMaker<wchar_t *> {
+        static std::string convert(wchar_t * str);
+    };
+#endif
+
+    // TBD: Should we use `strnlen` to ensure that we don't go out of the buffer,
+    //      while keeping string semantics?
+    template<int SZ>
+    struct StringMaker<char[SZ]> {
+        static std::string convert(char const* str) {
+            return ::Catch::Detail::stringify(std::string{ str });
+        }
+    };
+    template<int SZ>
+    struct StringMaker<signed char[SZ]> {
+        static std::string convert(signed char const* str) {
+            return ::Catch::Detail::stringify(std::string{ reinterpret_cast<char const *>(str) });
+        }
+    };
+    template<int SZ>
+    struct StringMaker<unsigned char[SZ]> {
+        static std::string convert(unsigned char const* str) {
+            return ::Catch::Detail::stringify(std::string{ reinterpret_cast<char const *>(str) });
+        }
+    };
+
+    template<>
+    struct StringMaker<int> {
+        static std::string convert(int value);
+    };
+    template<>
+    struct StringMaker<long> {
+        static std::string convert(long value);
+    };
+    template<>
+    struct StringMaker<long long> {
+        static std::string convert(long long value);
+    };
+    template<>
+    struct StringMaker<unsigned int> {
+        static std::string convert(unsigned int value);
+    };
+    template<>
+    struct StringMaker<unsigned long> {
+        static std::string convert(unsigned long value);
+    };
+    template<>
+    struct StringMaker<unsigned long long> {
+        static std::string convert(unsigned long long value);
+    };
+
+    template<>
+    struct StringMaker<bool> {
+        static std::string convert(bool b);
+    };
+
+    template<>
+    struct StringMaker<char> {
+        static std::string convert(char c);
+    };
+    template<>
+    struct StringMaker<signed char> {
+        static std::string convert(signed char c);
+    };
+    template<>
+    struct StringMaker<unsigned char> {
+        static std::string convert(unsigned char c);
+    };
+
+    template<>
+    struct StringMaker<std::nullptr_t> {
+        static std::string convert(std::nullptr_t);
+    };
+
+    template<>
+    struct StringMaker<float> {
+        static std::string convert(float value);
+    };
+    template<>
+    struct StringMaker<double> {
+        static std::string convert(double value);
+    };
+
+    template <typename T>
+    struct StringMaker<T*> {
+        template <typename U>
+        static std::string convert(U* p) {
+            if (p) {
+                return ::Catch::Detail::rawMemoryToString(p);
+            } else {
+                return "nullptr";
+            }
+        }
+    };
+
+    template <typename R, typename C>
+    struct StringMaker<R C::*> {
+        static std::string convert(R C::* p) {
+            if (p) {
+                return ::Catch::Detail::rawMemoryToString(p);
+            } else {
+                return "nullptr";
+            }
+        }
+    };
+
+#if defined(_MANAGED)
+    template <typename T>
+    struct StringMaker<T^> {
+        static std::string convert( T^ ref ) {
+            return ::Catch::Detail::clrReferenceToString(ref);
+        }
+    };
+#endif
+
+    namespace Detail {
+        template<typename InputIterator>
+        std::string rangeToString(InputIterator first, InputIterator last) {
+            ReusableStringStream rss;
+            rss << "{ ";
+            if (first != last) {
+                rss << ::Catch::Detail::stringify(*first);
+                for (++first; first != last; ++first)
+                    rss << ", " << ::Catch::Detail::stringify(*first);
+            }
+            rss << " }";
+            return rss.str();
+        }
+    }
+
+#ifdef __OBJC__
+    template<>
+    struct StringMaker<NSString*> {
+        static std::string convert(NSString * nsstring) {
+            if (!nsstring)
+                return "nil";
+            return std::string("@") + [nsstring UTF8String];
+        }
+    };
+    template<>
+    struct StringMaker<NSObject*> {
+        static std::string convert(NSObject* nsObject) {
+            return ::Catch::Detail::stringify([nsObject description]);
+        }
+
+    };
+    namespace Detail {
+        inline std::string stringify( NSString* nsstring ) {
+            return StringMaker<NSString*>::convert( nsstring );
+        }
+
+    } // namespace Detail
+#endif // __OBJC__
+
+} // namespace Catch
+
+//////////////////////////////////////////////////////
+// Separate std-lib types stringification, so it can be selectively enabled
+// This means that we do not bring in
+
+#if defined(CATCH_CONFIG_ENABLE_ALL_STRINGMAKERS)
+#  define CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER
+#  define CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER
+#  define CATCH_CONFIG_ENABLE_VARIANT_STRINGMAKER
+#  define CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
+#endif
+
+// Separate std::pair specialization
+#if defined(CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER)
+#include <utility>
+namespace Catch {
+    template<typename T1, typename T2>
+    struct StringMaker<std::pair<T1, T2> > {
+        static std::string convert(const std::pair<T1, T2>& pair) {
+            ReusableStringStream rss;
+            rss << "{ "
+                << ::Catch::Detail::stringify(pair.first)
+                << ", "
+                << ::Catch::Detail::stringify(pair.second)
+                << " }";
+            return rss.str();
+        }
+    };
+}
+#endif // CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER
+
+// Separate std::tuple specialization
+#if defined(CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER)
+#include <tuple>
+namespace Catch {
+    namespace Detail {
+        template<
+            typename Tuple,
+            std::size_t N = 0,
+            bool = (N < std::tuple_size<Tuple>::value)
+            >
+            struct TupleElementPrinter {
+            static void print(const Tuple& tuple, std::ostream& os) {
+                os << (N ? ", " : " ")
+                    << ::Catch::Detail::stringify(std::get<N>(tuple));
+                TupleElementPrinter<Tuple, N + 1>::print(tuple, os);
+            }
+        };
+
+        template<
+            typename Tuple,
+            std::size_t N
+        >
+            struct TupleElementPrinter<Tuple, N, false> {
+            static void print(const Tuple&, std::ostream&) {}
+        };
+
+    }
+
+    template<typename ...Types>
+    struct StringMaker<std::tuple<Types...>> {
+        static std::string convert(const std::tuple<Types...>& tuple) {
+            ReusableStringStream rss;
+            rss << '{';
+            Detail::TupleElementPrinter<std::tuple<Types...>>::print(tuple, rss.get());
+            rss << " }";
+            return rss.str();
+        }
+    };
+}
+#endif // CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER
+
+#if defined(CATCH_CONFIG_ENABLE_VARIANT_STRINGMAKER) && defined(CATCH_CONFIG_CPP17_VARIANT)
+#include <variant>
+namespace Catch {
+    template<>
+    struct StringMaker<std::monostate> {
+        static std::string convert(const std::monostate&) {
+            return "{ }";
+        }
+    };
+
+    template<typename... Elements>
+    struct StringMaker<std::variant<Elements...>> {
+        static std::string convert(const std::variant<Elements...>& variant) {
+            if (variant.valueless_by_exception()) {
+                return "{valueless variant}";
+            } else {
+                return std::visit(
+                    [](const auto& value) {
+                        return ::Catch::Detail::stringify(value);
+                    },
+                    variant
+                );
+            }
+        }
+    };
+}
+#endif // CATCH_CONFIG_ENABLE_VARIANT_STRINGMAKER
+
+namespace Catch {
+    struct not_this_one {}; // Tag type for detecting which begin/ end are being selected
+
+    // Import begin/ end from std here so they are considered alongside the fallback (...) overloads in this namespace
+    using std::begin;
+    using std::end;
+
+    not_this_one begin( ... );
+    not_this_one end( ... );
+
+    template <typename T>
+    struct is_range {
+        static const bool value =
+            !std::is_same<decltype(begin(std::declval<T>())), not_this_one>::value &&
+            !std::is_same<decltype(end(std::declval<T>())), not_this_one>::value;
+    };
+
+#if defined(_MANAGED) // Managed types are never ranges
+    template <typename T>
+    struct is_range<T^> {
+        static const bool value = false;
+    };
+#endif
+
+    template<typename Range>
+    std::string rangeToString( Range const& range ) {
+        return ::Catch::Detail::rangeToString( begin( range ), end( range ) );
+    }
+
+    // Handle vector<bool> specially
+    template<typename Allocator>
+    std::string rangeToString( std::vector<bool, Allocator> const& v ) {
+        ReusableStringStream rss;
+        rss << "{ ";
+        bool first = true;
+        for( bool b : v ) {
+            if( first )
+                first = false;
+            else
+                rss << ", ";
+            rss << ::Catch::Detail::stringify( b );
+        }
+        rss << " }";
+        return rss.str();
+    }
+
+    template<typename R>
+    struct StringMaker<R, typename std::enable_if<is_range<R>::value && !::Catch::Detail::IsStreamInsertable<R>::value>::type> {
+        static std::string convert( R const& range ) {
+            return rangeToString( range );
+        }
+    };
+
+    template <typename T, int SZ>
+    struct StringMaker<T[SZ]> {
+        static std::string convert(T const(&arr)[SZ]) {
+            return rangeToString(arr);
+        }
+    };
+
+} // namespace Catch
+
+// Separate std::chrono::duration specialization
+#if defined(CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER)
+#include <ctime>
+#include <ratio>
+#include <chrono>
+
+namespace Catch {
+
+template <class Ratio>
+struct ratio_string {
+    static std::string symbol();
+};
+
+template <class Ratio>
+std::string ratio_string<Ratio>::symbol() {
+    Catch::ReusableStringStream rss;
+    rss << '[' << Ratio::num << '/'
+        << Ratio::den << ']';
+    return rss.str();
+}
+template <>
+struct ratio_string<std::atto> {
+    static std::string symbol();
+};
+template <>
+struct ratio_string<std::femto> {
+    static std::string symbol();
+};
+template <>
+struct ratio_string<std::pico> {
+    static std::string symbol();
+};
+template <>
+struct ratio_string<std::nano> {
+    static std::string symbol();
+};
+template <>
+struct ratio_string<std::micro> {
+    static std::string symbol();
+};
+template <>
+struct ratio_string<std::milli> {
+    static std::string symbol();
+};
+
+    ////////////
+    // std::chrono::duration specializations
+    template<typename Value, typename Ratio>
+    struct StringMaker<std::chrono::duration<Value, Ratio>> {
+        static std::string convert(std::chrono::duration<Value, Ratio> const& duration) {
+            ReusableStringStream rss;
+            rss << duration.count() << ' ' << ratio_string<Ratio>::symbol() << 's';
+            return rss.str();
+        }
+    };
+    template<typename Value>
+    struct StringMaker<std::chrono::duration<Value, std::ratio<1>>> {
+        static std::string convert(std::chrono::duration<Value, std::ratio<1>> const& duration) {
+            ReusableStringStream rss;
+            rss << duration.count() << " s";
+            return rss.str();
+        }
+    };
+    template<typename Value>
+    struct StringMaker<std::chrono::duration<Value, std::ratio<60>>> {
+        static std::string convert(std::chrono::duration<Value, std::ratio<60>> const& duration) {
+            ReusableStringStream rss;
+            rss << duration.count() << " m";
+            return rss.str();
+        }
+    };
+    template<typename Value>
+    struct StringMaker<std::chrono::duration<Value, std::ratio<3600>>> {
+        static std::string convert(std::chrono::duration<Value, std::ratio<3600>> const& duration) {
+            ReusableStringStream rss;
+            rss << duration.count() << " h";
+            return rss.str();
+        }
+    };
+
+    ////////////
+    // std::chrono::time_point specialization
+    // Generic time_point cannot be specialized, only std::chrono::time_point<system_clock>
+    template<typename Clock, typename Duration>
+    struct StringMaker<std::chrono::time_point<Clock, Duration>> {
+        static std::string convert(std::chrono::time_point<Clock, Duration> const& time_point) {
+            return ::Catch::Detail::stringify(time_point.time_since_epoch()) + " since epoch";
+        }
+    };
+    // std::chrono::time_point<system_clock> specialization
+    template<typename Duration>
+    struct StringMaker<std::chrono::time_point<std::chrono::system_clock, Duration>> {
+        static std::string convert(std::chrono::time_point<std::chrono::system_clock, Duration> const& time_point) {
+            auto converted = std::chrono::system_clock::to_time_t(time_point);
+
+#ifdef _MSC_VER
+            std::tm timeInfo = {};
+            gmtime_s(&timeInfo, &converted);
+#else
+            std::tm* timeInfo = std::gmtime(&converted);
+#endif
+
+            auto const timeStampSize = sizeof("2017-01-16T17:06:45Z");
+            char timeStamp[timeStampSize];
+            const char * const fmt = "%Y-%m-%dT%H:%M:%SZ";
+
+#ifdef _MSC_VER
+            std::strftime(timeStamp, timeStampSize, fmt, &timeInfo);
+#else
+            std::strftime(timeStamp, timeStampSize, fmt, timeInfo);
+#endif
+            return std::string(timeStamp);
+        }
+    };
+}
+#endif // CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+// end catch_tostring.h
+#include <iosfwd>
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable:4389) // '==' : signed/unsigned mismatch
+#pragma warning(disable:4018) // more "signed/unsigned mismatch"
+#pragma warning(disable:4312) // Converting int to T* using reinterpret_cast (issue on x64 platform)
+#pragma warning(disable:4180) // qualifier applied to function type has no meaning
+#endif
+
+namespace Catch {
+
+    struct ITransientExpression {
+        auto isBinaryExpression() const -> bool { return m_isBinaryExpression; }
+        auto getResult() const -> bool { return m_result; }
+        virtual void streamReconstructedExpression( std::ostream &os ) const = 0;
+
+        ITransientExpression( bool isBinaryExpression, bool result )
+        :   m_isBinaryExpression( isBinaryExpression ),
+            m_result( result )
+        {}
+
+        // We don't actually need a virtual destructor, but many static analysers
+        // complain if it's not here :-(
+        virtual ~ITransientExpression();
+
+        bool m_isBinaryExpression;
+        bool m_result;
+
+    };
+
+    void formatReconstructedExpression( std::ostream &os, std::string const& lhs, StringRef op, std::string const& rhs );
+
+    template<typename LhsT, typename RhsT>
+    class BinaryExpr  : public ITransientExpression {
+        LhsT m_lhs;
+        StringRef m_op;
+        RhsT m_rhs;
+
+        void streamReconstructedExpression( std::ostream &os ) const override {
+            formatReconstructedExpression
+                    ( os, Catch::Detail::stringify( m_lhs ), m_op, Catch::Detail::stringify( m_rhs ) );
+        }
+
+    public:
+        BinaryExpr( bool comparisonResult, LhsT lhs, StringRef op, RhsT rhs )
+        :   ITransientExpression{ true, comparisonResult },
+            m_lhs( lhs ),
+            m_op( op ),
+            m_rhs( rhs )
+        {}
+    };
+
+    template<typename LhsT>
+    class UnaryExpr : public ITransientExpression {
+        LhsT m_lhs;
+
+        void streamReconstructedExpression( std::ostream &os ) const override {
+            os << Catch::Detail::stringify( m_lhs );
+        }
+
+    public:
+        explicit UnaryExpr( LhsT lhs )
+        :   ITransientExpression{ false, lhs ? true : false },
+            m_lhs( lhs )
+        {}
+    };
+
+    // Specialised comparison functions to handle equality comparisons between ints and pointers (NULL deduces as an int)
+    template<typename LhsT, typename RhsT>
+    auto compareEqual( LhsT const& lhs, RhsT const& rhs ) -> bool { return static_cast<bool>(lhs == rhs); }
+    template<typename T>
+    auto compareEqual( T* const& lhs, int rhs ) -> bool { return lhs == reinterpret_cast<void const*>( rhs ); }
+    template<typename T>
+    auto compareEqual( T* const& lhs, long rhs ) -> bool { return lhs == reinterpret_cast<void const*>( rhs ); }
+    template<typename T>
+    auto compareEqual( int lhs, T* const& rhs ) -> bool { return reinterpret_cast<void const*>( lhs ) == rhs; }
+    template<typename T>
+    auto compareEqual( long lhs, T* const& rhs ) -> bool { return reinterpret_cast<void const*>( lhs ) == rhs; }
+
+    template<typename LhsT, typename RhsT>
+    auto compareNotEqual( LhsT const& lhs, RhsT&& rhs ) -> bool { return static_cast<bool>(lhs != rhs); }
+    template<typename T>
+    auto compareNotEqual( T* const& lhs, int rhs ) -> bool { return lhs != reinterpret_cast<void const*>( rhs ); }
+    template<typename T>
+    auto compareNotEqual( T* const& lhs, long rhs ) -> bool { return lhs != reinterpret_cast<void const*>( rhs ); }
+    template<typename T>
+    auto compareNotEqual( int lhs, T* const& rhs ) -> bool { return reinterpret_cast<void const*>( lhs ) != rhs; }
+    template<typename T>
+    auto compareNotEqual( long lhs, T* const& rhs ) -> bool { return reinterpret_cast<void const*>( lhs ) != rhs; }
+
+    template<typename LhsT>
+    class ExprLhs {
+        LhsT m_lhs;
+    public:
+        explicit ExprLhs( LhsT lhs ) : m_lhs( lhs ) {}
+
+        template<typename RhsT>
+        auto operator == ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { compareEqual( m_lhs, rhs ), m_lhs, "==", rhs };
+        }
+        auto operator == ( bool rhs ) -> BinaryExpr<LhsT, bool> const {
+            return { m_lhs == rhs, m_lhs, "==", rhs };
+        }
+
+        template<typename RhsT>
+        auto operator != ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { compareNotEqual( m_lhs, rhs ), m_lhs, "!=", rhs };
+        }
+        auto operator != ( bool rhs ) -> BinaryExpr<LhsT, bool> const {
+            return { m_lhs != rhs, m_lhs, "!=", rhs };
+        }
+
+        template<typename RhsT>
+        auto operator > ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { static_cast<bool>(m_lhs > rhs), m_lhs, ">", rhs };
+        }
+        template<typename RhsT>
+        auto operator < ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { static_cast<bool>(m_lhs < rhs), m_lhs, "<", rhs };
+        }
+        template<typename RhsT>
+        auto operator >= ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { static_cast<bool>(m_lhs >= rhs), m_lhs, ">=", rhs };
+        }
+        template<typename RhsT>
+        auto operator <= ( RhsT const& rhs ) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { static_cast<bool>(m_lhs <= rhs), m_lhs, "<=", rhs };
+        }
+
+        auto makeUnaryExpr() const -> UnaryExpr<LhsT> {
+            return UnaryExpr<LhsT>{ m_lhs };
+        }
+    };
+
+    void handleExpression( ITransientExpression const& expr );
+
+    template<typename T>
+    void handleExpression( ExprLhs<T> const& expr ) {
+        handleExpression( expr.makeUnaryExpr() );
+    }
+
+    struct Decomposer {
+        template<typename T>
+        auto operator <= ( T const& lhs ) -> ExprLhs<T const&> {
+            return ExprLhs<T const&>{ lhs };
+        }
+
+        auto operator <=( bool value ) -> ExprLhs<bool> {
+            return ExprLhs<bool>{ value };
+        }
+    };
+
+} // end namespace Catch
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+// end catch_decomposer.h
+// start catch_interfaces_capture.h
+
+#include <string>
+
+namespace Catch {
+
+    class AssertionResult;
+    struct AssertionInfo;
+    struct SectionInfo;
+    struct SectionEndInfo;
+    struct MessageInfo;
+    struct Counts;
+    struct BenchmarkInfo;
+    struct BenchmarkStats;
+    struct AssertionReaction;
+    struct SourceLineInfo;
+
+    struct ITransientExpression;
+    struct IGeneratorTracker;
+
+    struct IResultCapture {
+
+        virtual ~IResultCapture();
+
+        virtual bool sectionStarted(    SectionInfo const& sectionInfo,
+                                        Counts& assertions ) = 0;
+        virtual void sectionEnded( SectionEndInfo const& endInfo ) = 0;
+        virtual void sectionEndedEarly( SectionEndInfo const& endInfo ) = 0;
+
+        virtual auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker& = 0;
+
+        virtual void benchmarkStarting( BenchmarkInfo const& info ) = 0;
+        virtual void benchmarkEnded( BenchmarkStats const& stats ) = 0;
+
+        virtual void pushScopedMessage( MessageInfo const& message ) = 0;
+        virtual void popScopedMessage( MessageInfo const& message ) = 0;
+
+        virtual void handleFatalErrorCondition( StringRef message ) = 0;
+
+        virtual void handleExpr
+                (   AssertionInfo const& info,
+                    ITransientExpression const& expr,
+                    AssertionReaction& reaction ) = 0;
+        virtual void handleMessage
+                (   AssertionInfo const& info,
+                    ResultWas::OfType resultType,
+                    StringRef const& message,
+                    AssertionReaction& reaction ) = 0;
+        virtual void handleUnexpectedExceptionNotThrown
+                (   AssertionInfo const& info,
+                    AssertionReaction& reaction ) = 0;
+        virtual void handleUnexpectedInflightException
+                (   AssertionInfo const& info,
+                    std::string const& message,
+                    AssertionReaction& reaction ) = 0;
+        virtual void handleIncomplete
+                (   AssertionInfo const& info ) = 0;
+        virtual void handleNonExpr
+                (   AssertionInfo const &info,
+                    ResultWas::OfType resultType,
+                    AssertionReaction &reaction ) = 0;
+
+        virtual bool lastAssertionPassed() = 0;
+        virtual void assertionPassed() = 0;
+
+        // Deprecated, do not use:
+        virtual std::string getCurrentTestName() const = 0;
+        virtual const AssertionResult* getLastResult() const = 0;
+        virtual void exceptionEarlyReported() = 0;
+    };
+
+    IResultCapture& getResultCapture();
+}
+
+// end catch_interfaces_capture.h
+namespace Catch {
+
+    struct TestFailureException{};
+    struct AssertionResultData;
+    struct IResultCapture;
+    class RunContext;
+
+    class LazyExpression {
+        friend class AssertionHandler;
+        friend struct AssertionStats;
+        friend class RunContext;
+
+        ITransientExpression const* m_transientExpression = nullptr;
+        bool m_isNegated;
+    public:
+        LazyExpression( bool isNegated );
+        LazyExpression( LazyExpression const& other );
+        LazyExpression& operator = ( LazyExpression const& ) = delete;
+
+        explicit operator bool() const;
+
+        friend auto operator << ( std::ostream& os, LazyExpression const& lazyExpr ) -> std::ostream&;
+    };
+
+    struct AssertionReaction {
+        bool shouldDebugBreak = false;
+        bool shouldThrow = false;
+    };
+
+    class AssertionHandler {
+        AssertionInfo m_assertionInfo;
+        AssertionReaction m_reaction;
+        bool m_completed = false;
+        IResultCapture& m_resultCapture;
+
+    public:
+        AssertionHandler
+            (   StringRef const& macroName,
+                SourceLineInfo const& lineInfo,
+                StringRef capturedExpression,
+                ResultDisposition::Flags resultDisposition );
+        ~AssertionHandler() {
+            if ( !m_completed ) {
+                m_resultCapture.handleIncomplete( m_assertionInfo );
+            }
+        }
+
+        template<typename T>
+        void handleExpr( ExprLhs<T> const& expr ) {
+            handleExpr( expr.makeUnaryExpr() );
+        }
+        void handleExpr( ITransientExpression const& expr );
+
+        void handleMessage(ResultWas::OfType resultType, StringRef const& message);
+
+        void handleExceptionThrownAsExpected();
+        void handleUnexpectedExceptionNotThrown();
+        void handleExceptionNotThrownAsExpected();
+        void handleThrowingCallSkipped();
+        void handleUnexpectedInflightException();
+
+        void complete();
+        void setCompleted();
+
+        // query
+        auto allowThrows() const -> bool;
+    };
+
+    void handleExceptionMatchExpr( AssertionHandler& handler, std::string const& str, StringRef const& matcherString );
+
+} // namespace Catch
+
+// end catch_assertionhandler.h
+// start catch_message.h
+
+#include <string>
+#include <vector>
+
+namespace Catch {
+
+    struct MessageInfo {
+        MessageInfo(    StringRef const& _macroName,
+                        SourceLineInfo const& _lineInfo,
+                        ResultWas::OfType _type );
+
+        StringRef macroName;
+        std::string message;
+        SourceLineInfo lineInfo;
+        ResultWas::OfType type;
+        unsigned int sequence;
+
+        bool operator == ( MessageInfo const& other ) const;
+        bool operator < ( MessageInfo const& other ) const;
+    private:
+        static unsigned int globalCount;
+    };
+
+    struct MessageStream {
+
+        template<typename T>
+        MessageStream& operator << ( T const& value ) {
+            m_stream << value;
+            return *this;
+        }
+
+        ReusableStringStream m_stream;
+    };
+
+    struct MessageBuilder : MessageStream {
+        MessageBuilder( StringRef const& macroName,
+                        SourceLineInfo const& lineInfo,
+                        ResultWas::OfType type );
+
+        template<typename T>
+        MessageBuilder& operator << ( T const& value ) {
+            m_stream << value;
+            return *this;
+        }
+
+        MessageInfo m_info;
+    };
+
+    class ScopedMessage {
+    public:
+        explicit ScopedMessage( MessageBuilder const& builder );
+        ~ScopedMessage();
+
+        MessageInfo m_info;
+    };
+
+    class Capturer {
+        std::vector<MessageInfo> m_messages;
+        IResultCapture& m_resultCapture = getResultCapture();
+        size_t m_captured = 0;
+    public:
+        Capturer( StringRef macroName, SourceLineInfo const& lineInfo, ResultWas::OfType resultType, StringRef names );
+        ~Capturer();
+
+        void captureValue( size_t index, std::string const& value );
+
+        template<typename T>
+        void captureValues( size_t index, T const& value ) {
+            captureValue( index, Catch::Detail::stringify( value ) );
+        }
+
+        template<typename T, typename... Ts>
+        void captureValues( size_t index, T const& value, Ts const&... values ) {
+            captureValue( index, Catch::Detail::stringify(value) );
+            captureValues( index+1, values... );
+        }
+    };
+
+} // end namespace Catch
+
+// end catch_message.h
+#if !defined(CATCH_CONFIG_DISABLE)
+
+#if !defined(CATCH_CONFIG_DISABLE_STRINGIFICATION)
+  #define CATCH_INTERNAL_STRINGIFY(...) #__VA_ARGS__
+#else
+  #define CATCH_INTERNAL_STRINGIFY(...) "Disabled by CATCH_CONFIG_DISABLE_STRINGIFICATION"
+#endif
+
+#if defined(CATCH_CONFIG_FAST_COMPILE) || defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+
+///////////////////////////////////////////////////////////////////////////////
+// Another way to speed-up compilation is to omit local try-catch for REQUIRE*
+// macros.
+#define INTERNAL_CATCH_TRY
+#define INTERNAL_CATCH_CATCH( capturer )
+
+#else // CATCH_CONFIG_FAST_COMPILE
+
+#define INTERNAL_CATCH_TRY try
+#define INTERNAL_CATCH_CATCH( handler ) catch(...) { handler.handleUnexpectedInflightException(); }
+
+#endif
+
+#define INTERNAL_CATCH_REACT( handler ) handler.complete();
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_TEST( macroName, resultDisposition, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__), resultDisposition ); \
+        INTERNAL_CATCH_TRY { \
+            CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
+            catchAssertionHandler.handleExpr( Catch::Decomposer() <= __VA_ARGS__ ); \
+            CATCH_INTERNAL_UNSUPPRESS_PARENTHESES_WARNINGS \
+        } INTERNAL_CATCH_CATCH( catchAssertionHandler ) \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( (void)0, false && static_cast<bool>( !!(__VA_ARGS__) ) ) // the expression here is never evaluated at runtime but it forces the compiler to give it a look
+    // The double negation silences MSVC's C4800 warning, the static_cast forces short-circuit evaluation if the type has overloaded &&.
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_IF( macroName, resultDisposition, ... ) \
+    INTERNAL_CATCH_TEST( macroName, resultDisposition, __VA_ARGS__ ); \
+    if( Catch::getResultCapture().lastAssertionPassed() )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_ELSE( macroName, resultDisposition, ... ) \
+    INTERNAL_CATCH_TEST( macroName, resultDisposition, __VA_ARGS__ ); \
+    if( !Catch::getResultCapture().lastAssertionPassed() )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_NO_THROW( macroName, resultDisposition, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__), resultDisposition ); \
+        try { \
+            static_cast<void>(__VA_ARGS__); \
+            catchAssertionHandler.handleExceptionNotThrownAsExpected(); \
+        } \
+        catch( ... ) { \
+            catchAssertionHandler.handleUnexpectedInflightException(); \
+        } \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_THROWS( macroName, resultDisposition, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__), resultDisposition); \
+        if( catchAssertionHandler.allowThrows() ) \
+            try { \
+                static_cast<void>(__VA_ARGS__); \
+                catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
+            } \
+            catch( ... ) { \
+                catchAssertionHandler.handleExceptionThrownAsExpected(); \
+            } \
+        else \
+            catchAssertionHandler.handleThrowingCallSkipped(); \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_THROWS_AS( macroName, exceptionType, resultDisposition, expr ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(expr) ", " CATCH_INTERNAL_STRINGIFY(exceptionType), resultDisposition ); \
+        if( catchAssertionHandler.allowThrows() ) \
+            try { \
+                static_cast<void>(expr); \
+                catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
+            } \
+            catch( exceptionType const& ) { \
+                catchAssertionHandler.handleExceptionThrownAsExpected(); \
+            } \
+            catch( ... ) { \
+                catchAssertionHandler.handleUnexpectedInflightException(); \
+            } \
+        else \
+            catchAssertionHandler.handleThrowingCallSkipped(); \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_MSG( macroName, messageType, resultDisposition, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, Catch::StringRef(), resultDisposition ); \
+        catchAssertionHandler.handleMessage( messageType, ( Catch::MessageStream() << __VA_ARGS__ + ::Catch::StreamEndStop() ).m_stream.str() ); \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_CAPTURE( varName, macroName, ... ) \
+    auto varName = Catch::Capturer( macroName, CATCH_INTERNAL_LINEINFO, Catch::ResultWas::Info, #__VA_ARGS__ ); \
+    varName.captureValues( 0, __VA_ARGS__ )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_INFO( macroName, log ) \
+    Catch::ScopedMessage INTERNAL_CATCH_UNIQUE_NAME( scopedMessage )( Catch::MessageBuilder( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, Catch::ResultWas::Info ) << log );
+
+///////////////////////////////////////////////////////////////////////////////
+// Although this is matcher-based, it can be used with just a string
+#define INTERNAL_CATCH_THROWS_STR_MATCHES( macroName, resultDisposition, matcher, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
+        if( catchAssertionHandler.allowThrows() ) \
+            try { \
+                static_cast<void>(__VA_ARGS__); \
+                catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
+            } \
+            catch( ... ) { \
+                Catch::handleExceptionMatchExpr( catchAssertionHandler, matcher, #matcher##_catch_sr ); \
+            } \
+        else \
+            catchAssertionHandler.handleThrowingCallSkipped(); \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+#endif // CATCH_CONFIG_DISABLE
+
+// end catch_capture.hpp
+// start catch_section.h
+
+// start catch_section_info.h
+
+// start catch_totals.h
+
+#include <cstddef>
+
+namespace Catch {
+
+    struct Counts {
+        Counts operator - ( Counts const& other ) const;
+        Counts& operator += ( Counts const& other );
+
+        std::size_t total() const;
+        bool allPassed() const;
+        bool allOk() const;
+
+        std::size_t passed = 0;
+        std::size_t failed = 0;
+        std::size_t failedButOk = 0;
+    };
+
+    struct Totals {
+
+        Totals operator - ( Totals const& other ) const;
+        Totals& operator += ( Totals const& other );
+
+        Totals delta( Totals const& prevTotals ) const;
+
+        int error = 0;
+        Counts assertions;
+        Counts testCases;
+    };
+}
+
+// end catch_totals.h
+#include <string>
+
+namespace Catch {
+
+    struct SectionInfo {
+        SectionInfo
+            (   SourceLineInfo const& _lineInfo,
+                std::string const& _name );
+
+        // Deprecated
+        SectionInfo
+            (   SourceLineInfo const& _lineInfo,
+                std::string const& _name,
+                std::string const& ) : SectionInfo( _lineInfo, _name ) {}
+
+        std::string name;
+        std::string description; // !Deprecated: this will always be empty
+        SourceLineInfo lineInfo;
+    };
+
+    struct SectionEndInfo {
+        SectionInfo sectionInfo;
+        Counts prevAssertions;
+        double durationInSeconds;
+    };
+
+} // end namespace Catch
+
+// end catch_section_info.h
+// start catch_timer.h
+
+#include <cstdint>
+
+namespace Catch {
+
+    auto getCurrentNanosecondsSinceEpoch() -> uint64_t;
+    auto getEstimatedClockResolution() -> uint64_t;
+
+    class Timer {
+        uint64_t m_nanoseconds = 0;
+    public:
+        void start();
+        auto getElapsedNanoseconds() const -> uint64_t;
+        auto getElapsedMicroseconds() const -> uint64_t;
+        auto getElapsedMilliseconds() const -> unsigned int;
+        auto getElapsedSeconds() const -> double;
+    };
+
+} // namespace Catch
+
+// end catch_timer.h
+#include <string>
+
+namespace Catch {
+
+    class Section : NonCopyable {
+    public:
+        Section( SectionInfo const& info );
+        ~Section();
+
+        // This indicates whether the section should be executed or not
+        explicit operator bool() const;
+
+    private:
+        SectionInfo m_info;
+
+        std::string m_name;
+        Counts m_assertions;
+        bool m_sectionIncluded;
+        Timer m_timer;
+    };
+
+} // end namespace Catch
+
+#define INTERNAL_CATCH_SECTION( ... ) \
+    CATCH_INTERNAL_SUPPRESS_UNUSED_WARNINGS \
+    if( Catch::Section const& INTERNAL_CATCH_UNIQUE_NAME( catch_internal_Section ) = Catch::SectionInfo( CATCH_INTERNAL_LINEINFO, __VA_ARGS__ ) ) \
+    CATCH_INTERNAL_UNSUPPRESS_UNUSED_WARNINGS
+
+#define INTERNAL_CATCH_DYNAMIC_SECTION( ... ) \
+    CATCH_INTERNAL_SUPPRESS_UNUSED_WARNINGS \
+    if( Catch::Section const& INTERNAL_CATCH_UNIQUE_NAME( catch_internal_Section ) = Catch::SectionInfo( CATCH_INTERNAL_LINEINFO, (Catch::ReusableStringStream() << __VA_ARGS__).str() ) ) \
+    CATCH_INTERNAL_UNSUPPRESS_UNUSED_WARNINGS
+
+// end catch_section.h
+// start catch_benchmark.h
+
+#include <cstdint>
+#include <string>
+
+namespace Catch {
+
+    class BenchmarkLooper {
+
+        std::string m_name;
+        std::size_t m_count = 0;
+        std::size_t m_iterationsToRun = 1;
+        uint64_t m_resolution;
+        Timer m_timer;
+
+        static auto getResolution() -> uint64_t;
+    public:
+        // Keep most of this inline as it's on the code path that is being timed
+        BenchmarkLooper( StringRef name )
+        :   m_name( name ),
+            m_resolution( getResolution() )
+        {
+            reportStart();
+            m_timer.start();
+        }
+
+        explicit operator bool() {
+            if( m_count < m_iterationsToRun )
+                return true;
+            return needsMoreIterations();
+        }
+
+        void increment() {
+            ++m_count;
+        }
+
+        void reportStart();
+        auto needsMoreIterations() -> bool;
+    };
+
+} // end namespace Catch
+
+#define BENCHMARK( name ) \
+    for( Catch::BenchmarkLooper looper( name ); looper; looper.increment() )
+
+// end catch_benchmark.h
+// start catch_interfaces_exception.h
+
+// start catch_interfaces_registry_hub.h
+
+#include <string>
+#include <memory>
+
+namespace Catch {
+
+    class TestCase;
+    struct ITestCaseRegistry;
+    struct IExceptionTranslatorRegistry;
+    struct IExceptionTranslator;
+    struct IReporterRegistry;
+    struct IReporterFactory;
+    struct ITagAliasRegistry;
+    class StartupExceptionRegistry;
+
+    using IReporterFactoryPtr = std::shared_ptr<IReporterFactory>;
+
+    struct IRegistryHub {
+        virtual ~IRegistryHub();
+
+        virtual IReporterRegistry const& getReporterRegistry() const = 0;
+        virtual ITestCaseRegistry const& getTestCaseRegistry() const = 0;
+        virtual ITagAliasRegistry const& getTagAliasRegistry() const = 0;
+
+        virtual IExceptionTranslatorRegistry const& getExceptionTranslatorRegistry() const = 0;
+
+        virtual StartupExceptionRegistry const& getStartupExceptionRegistry() const = 0;
+    };
+
+    struct IMutableRegistryHub {
+        virtual ~IMutableRegistryHub();
+        virtual void registerReporter( std::string const& name, IReporterFactoryPtr const& factory ) = 0;
+        virtual void registerListener( IReporterFactoryPtr const& factory ) = 0;
+        virtual void registerTest( TestCase const& testInfo ) = 0;
+        virtual void registerTranslator( const IExceptionTranslator* translator ) = 0;
+        virtual void registerTagAlias( std::string const& alias, std::string const& tag, SourceLineInfo const& lineInfo ) = 0;
+        virtual void registerStartupException() noexcept = 0;
+    };
+
+    IRegistryHub const& getRegistryHub();
+    IMutableRegistryHub& getMutableRegistryHub();
+    void cleanUp();
+    std::string translateActiveException();
+
+}
+
+// end catch_interfaces_registry_hub.h
+#if defined(CATCH_CONFIG_DISABLE)
+    #define INTERNAL_CATCH_TRANSLATE_EXCEPTION_NO_REG( translatorName, signature) \
+        static std::string translatorName( signature )
+#endif
+
+#include <exception>
+#include <string>
+#include <vector>
+
+namespace Catch {
+    using exceptionTranslateFunction = std::string(*)();
+
+    struct IExceptionTranslator;
+    using ExceptionTranslators = std::vector<std::unique_ptr<IExceptionTranslator const>>;
+
+    struct IExceptionTranslator {
+        virtual ~IExceptionTranslator();
+        virtual std::string translate( ExceptionTranslators::const_iterator it, ExceptionTranslators::const_iterator itEnd ) const = 0;
+    };
+
+    struct IExceptionTranslatorRegistry {
+        virtual ~IExceptionTranslatorRegistry();
+
+        virtual std::string translateActiveException() const = 0;
+    };
+
+    class ExceptionTranslatorRegistrar {
+        template<typename T>
+        class ExceptionTranslator : public IExceptionTranslator {
+        public:
+
+            ExceptionTranslator( std::string(*translateFunction)( T& ) )
+            : m_translateFunction( translateFunction )
+            {}
+
+            std::string translate( ExceptionTranslators::const_iterator it, ExceptionTranslators::const_iterator itEnd ) const override {
+                try {
+                    if( it == itEnd )
+                        std::rethrow_exception(std::current_exception());
+                    else
+                        return (*it)->translate( it+1, itEnd );
+                }
+                catch( T& ex ) {
+                    return m_translateFunction( ex );
+                }
+            }
+
+        protected:
+            std::string(*m_translateFunction)( T& );
+        };
+
+    public:
+        template<typename T>
+        ExceptionTranslatorRegistrar( std::string(*translateFunction)( T& ) ) {
+            getMutableRegistryHub().registerTranslator
+                ( new ExceptionTranslator<T>( translateFunction ) );
+        }
+    };
+}
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_TRANSLATE_EXCEPTION2( translatorName, signature ) \
+    static std::string translatorName( signature ); \
+    CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+    namespace{ Catch::ExceptionTranslatorRegistrar INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionRegistrar )( &translatorName ); } \
+    CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
+    static std::string translatorName( signature )
+
+#define INTERNAL_CATCH_TRANSLATE_EXCEPTION( signature ) INTERNAL_CATCH_TRANSLATE_EXCEPTION2( INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionTranslator ), signature )
+
+// end catch_interfaces_exception.h
+// start catch_approx.h
+
+#include <type_traits>
+
+namespace Catch {
+namespace Detail {
+
+    class Approx {
+    private:
+        bool equalityComparisonImpl(double other) const;
+        // Validates the new margin (margin >= 0)
+        // out-of-line to avoid including stdexcept in the header
+        void setMargin(double margin);
+        // Validates the new epsilon (0 < epsilon < 1)
+        // out-of-line to avoid including stdexcept in the header
+        void setEpsilon(double epsilon);
+
+    public:
+        explicit Approx ( double value );
+
+        static Approx custom();
+
+        Approx operator-() const;
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        Approx operator()( T const& value ) {
+            Approx approx( static_cast<double>(value) );
+            approx.m_epsilon = m_epsilon;
+            approx.m_margin = m_margin;
+            approx.m_scale = m_scale;
+            return approx;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        explicit Approx( T const& value ): Approx(static_cast<double>(value))
+        {}
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator == ( const T& lhs, Approx const& rhs ) {
+            auto lhs_v = static_cast<double>(lhs);
+            return rhs.equalityComparisonImpl(lhs_v);
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator == ( Approx const& lhs, const T& rhs ) {
+            return operator==( rhs, lhs );
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator != ( T const& lhs, Approx const& rhs ) {
+            return !operator==( lhs, rhs );
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator != ( Approx const& lhs, T const& rhs ) {
+            return !operator==( rhs, lhs );
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator <= ( T const& lhs, Approx const& rhs ) {
+            return static_cast<double>(lhs) < rhs.m_value || lhs == rhs;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator <= ( Approx const& lhs, T const& rhs ) {
+            return lhs.m_value < static_cast<double>(rhs) || lhs == rhs;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator >= ( T const& lhs, Approx const& rhs ) {
+            return static_cast<double>(lhs) > rhs.m_value || lhs == rhs;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        friend bool operator >= ( Approx const& lhs, T const& rhs ) {
+            return lhs.m_value > static_cast<double>(rhs) || lhs == rhs;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        Approx& epsilon( T const& newEpsilon ) {
+            double epsilonAsDouble = static_cast<double>(newEpsilon);
+            setEpsilon(epsilonAsDouble);
+            return *this;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        Approx& margin( T const& newMargin ) {
+            double marginAsDouble = static_cast<double>(newMargin);
+            setMargin(marginAsDouble);
+            return *this;
+        }
+
+        template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
+        Approx& scale( T const& newScale ) {
+            m_scale = static_cast<double>(newScale);
+            return *this;
+        }
+
+        std::string toString() const;
+
+    private:
+        double m_epsilon;
+        double m_margin;
+        double m_scale;
+        double m_value;
+    };
+} // end namespace Detail
+
+namespace literals {
+    Detail::Approx operator "" _a(long double val);
+    Detail::Approx operator "" _a(unsigned long long val);
+} // end namespace literals
+
+template<>
+struct StringMaker<Catch::Detail::Approx> {
+    static std::string convert(Catch::Detail::Approx const& value);
+};
+
+} // end namespace Catch
+
+// end catch_approx.h
+// start catch_string_manip.h
+
+#include <string>
+#include <iosfwd>
+
+namespace Catch {
+
+    bool startsWith( std::string const& s, std::string const& prefix );
+    bool startsWith( std::string const& s, char prefix );
+    bool endsWith( std::string const& s, std::string const& suffix );
+    bool endsWith( std::string const& s, char suffix );
+    bool contains( std::string const& s, std::string const& infix );
+    void toLowerInPlace( std::string& s );
+    std::string toLower( std::string const& s );
+    std::string trim( std::string const& str );
+    bool replaceInPlace( std::string& str, std::string const& replaceThis, std::string const& withThis );
+
+    struct pluralise {
+        pluralise( std::size_t count, std::string const& label );
+
+        friend std::ostream& operator << ( std::ostream& os, pluralise const& pluraliser );
+
+        std::size_t m_count;
+        std::string m_label;
+    };
+}
+
+// end catch_string_manip.h
+#ifndef CATCH_CONFIG_DISABLE_MATCHERS
+// start catch_capture_matchers.h
+
+// start catch_matchers.h
+
+#include <string>
+#include <vector>
+
+namespace Catch {
+namespace Matchers {
+    namespace Impl {
+
+        template<typename ArgT> struct MatchAllOf;
+        template<typename ArgT> struct MatchAnyOf;
+        template<typename ArgT> struct MatchNotOf;
+
+        class MatcherUntypedBase {
+        public:
+            MatcherUntypedBase() = default;
+            MatcherUntypedBase ( MatcherUntypedBase const& ) = default;
+            MatcherUntypedBase& operator = ( MatcherUntypedBase const& ) = delete;
+            std::string toString() const;
+
+        protected:
+            virtual ~MatcherUntypedBase();
+            virtual std::string describe() const = 0;
+            mutable std::string m_cachedToString;
+        };
+
+#ifdef __clang__
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wnon-virtual-dtor"
+#endif
+
+        template<typename ObjectT>
+        struct MatcherMethod {
+            virtual bool match( ObjectT const& arg ) const = 0;
+        };
+
+#ifdef __clang__
+#    pragma clang diagnostic pop
+#endif
+
+        template<typename T>
+        struct MatcherBase : MatcherUntypedBase, MatcherMethod<T> {
+
+            MatchAllOf<T> operator && ( MatcherBase const& other ) const;
+            MatchAnyOf<T> operator || ( MatcherBase const& other ) const;
+            MatchNotOf<T> operator ! () const;
+        };
+
+        template<typename ArgT>
+        struct MatchAllOf : MatcherBase<ArgT> {
+            bool match( ArgT const& arg ) const override {
+                for( auto matcher : m_matchers ) {
+                    if (!matcher->match(arg))
+                        return false;
+                }
+                return true;
+            }
+            std::string describe() const override {
+                std::string description;
+                description.reserve( 4 + m_matchers.size()*32 );
+                description += "( ";
+                bool first = true;
+                for( auto matcher : m_matchers ) {
+                    if( first )
+                        first = false;
+                    else
+                        description += " and ";
+                    description += matcher->toString();
+                }
+                description += " )";
+                return description;
+            }
+
+            MatchAllOf<ArgT>& operator && ( MatcherBase<ArgT> const& other ) {
+                m_matchers.push_back( &other );
+                return *this;
+            }
+
+            std::vector<MatcherBase<ArgT> const*> m_matchers;
+        };
+        template<typename ArgT>
+        struct MatchAnyOf : MatcherBase<ArgT> {
+
+            bool match( ArgT const& arg ) const override {
+                for( auto matcher : m_matchers ) {
+                    if (matcher->match(arg))
+                        return true;
+                }
+                return false;
+            }
+            std::string describe() const override {
+                std::string description;
+                description.reserve( 4 + m_matchers.size()*32 );
+                description += "( ";
+                bool first = true;
+                for( auto matcher : m_matchers ) {
+                    if( first )
+                        first = false;
+                    else
+                        description += " or ";
+                    description += matcher->toString();
+                }
+                description += " )";
+                return description;
+            }
+
+            MatchAnyOf<ArgT>& operator || ( MatcherBase<ArgT> const& other ) {
+                m_matchers.push_back( &other );
+                return *this;
+            }
+
+            std::vector<MatcherBase<ArgT> const*> m_matchers;
+        };
+
+        template<typename ArgT>
+        struct MatchNotOf : MatcherBase<ArgT> {
+
+            MatchNotOf( MatcherBase<ArgT> const& underlyingMatcher ) : m_underlyingMatcher( underlyingMatcher ) {}
+
+            bool match( ArgT const& arg ) const override {
+                return !m_underlyingMatcher.match( arg );
+            }
+
+            std::string describe() const override {
+                return "not " + m_underlyingMatcher.toString();
+            }
+            MatcherBase<ArgT> const& m_underlyingMatcher;
+        };
+
+        template<typename T>
+        MatchAllOf<T> MatcherBase<T>::operator && ( MatcherBase const& other ) const {
+            return MatchAllOf<T>() && *this && other;
+        }
+        template<typename T>
+        MatchAnyOf<T> MatcherBase<T>::operator || ( MatcherBase const& other ) const {
+            return MatchAnyOf<T>() || *this || other;
+        }
+        template<typename T>
+        MatchNotOf<T> MatcherBase<T>::operator ! () const {
+            return MatchNotOf<T>( *this );
+        }
+
+    } // namespace Impl
+
+} // namespace Matchers
+
+using namespace Matchers;
+using Matchers::Impl::MatcherBase;
+
+} // namespace Catch
+
+// end catch_matchers.h
+// start catch_matchers_floating.h
+
+#include <type_traits>
+#include <cmath>
+
+namespace Catch {
+namespace Matchers {
+
+    namespace Floating {
+
+        enum class FloatingPointKind : uint8_t;
+
+        struct WithinAbsMatcher : MatcherBase<double> {
+            WithinAbsMatcher(double target, double margin);
+            bool match(double const& matchee) const override;
+            std::string describe() const override;
+        private:
+            double m_target;
+            double m_margin;
+        };
+
+        struct WithinUlpsMatcher : MatcherBase<double> {
+            WithinUlpsMatcher(double target, int ulps, FloatingPointKind baseType);
+            bool match(double const& matchee) const override;
+            std::string describe() const override;
+        private:
+            double m_target;
+            int m_ulps;
+            FloatingPointKind m_type;
+        };
+
+    } // namespace Floating
+
+    // The following functions create the actual matcher objects.
+    // This allows the types to be inferred
+    Floating::WithinUlpsMatcher WithinULP(double target, int maxUlpDiff);
+    Floating::WithinUlpsMatcher WithinULP(float target, int maxUlpDiff);
+    Floating::WithinAbsMatcher WithinAbs(double target, double margin);
+
+} // namespace Matchers
+} // namespace Catch
+
+// end catch_matchers_floating.h
+// start catch_matchers_generic.hpp
+
+#include <functional>
+#include <string>
+
+namespace Catch {
+namespace Matchers {
+namespace Generic {
+
+namespace Detail {
+    std::string finalizeDescription(const std::string& desc);
+}
+
+template <typename T>
+class PredicateMatcher : public MatcherBase<T> {
+    std::function<bool(T const&)> m_predicate;
+    std::string m_description;
+public:
+
+    PredicateMatcher(std::function<bool(T const&)> const& elem, std::string const& descr)
+        :m_predicate(std::move(elem)),
+        m_description(Detail::finalizeDescription(descr))
+    {}
+
+    bool match( T const& item ) const override {
+        return m_predicate(item);
+    }
+
+    std::string describe() const override {
+        return m_description;
+    }
+};
+
+} // namespace Generic
+
+    // The following functions create the actual matcher objects.
+    // The user has to explicitly specify type to the function, because
+    // infering std::function<bool(T const&)> is hard (but possible) and
+    // requires a lot of TMP.
+    template<typename T>
+    Generic::PredicateMatcher<T> Predicate(std::function<bool(T const&)> const& predicate, std::string const& description = "") {
+        return Generic::PredicateMatcher<T>(predicate, description);
+    }
+
+} // namespace Matchers
+} // namespace Catch
+
+// end catch_matchers_generic.hpp
+// start catch_matchers_string.h
+
+#include <string>
+
+namespace Catch {
+namespace Matchers {
+
+    namespace StdString {
+
+        struct CasedString
+        {
+            CasedString( std::string const& str, CaseSensitive::Choice caseSensitivity );
+            std::string adjustString( std::string const& str ) const;
+            std::string caseSensitivitySuffix() const;
+
+            CaseSensitive::Choice m_caseSensitivity;
+            std::string m_str;
+        };
+
+        struct StringMatcherBase : MatcherBase<std::string> {
+            StringMatcherBase( std::string const& operation, CasedString const& comparator );
+            std::string describe() const override;
+
+            CasedString m_comparator;
+            std::string m_operation;
+        };
+
+        struct EqualsMatcher : StringMatcherBase {
+            EqualsMatcher( CasedString const& comparator );
+            bool match( std::string const& source ) const override;
+        };
+        struct ContainsMatcher : StringMatcherBase {
+            ContainsMatcher( CasedString const& comparator );
+            bool match( std::string const& source ) const override;
+        };
+        struct StartsWithMatcher : StringMatcherBase {
+            StartsWithMatcher( CasedString const& comparator );
+            bool match( std::string const& source ) const override;
+        };
+        struct EndsWithMatcher : StringMatcherBase {
+            EndsWithMatcher( CasedString const& comparator );
+            bool match( std::string const& source ) const override;
+        };
+
+        struct RegexMatcher : MatcherBase<std::string> {
+            RegexMatcher( std::string regex, CaseSensitive::Choice caseSensitivity );
+            bool match( std::string const& matchee ) const override;
+            std::string describe() const override;
+
+        private:
+            std::string m_regex;
+            CaseSensitive::Choice m_caseSensitivity;
+        };
+
+    } // namespace StdString
+
+    // The following functions create the actual matcher objects.
+    // This allows the types to be inferred
+
+    StdString::EqualsMatcher Equals( std::string const& str, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes );
+    StdString::ContainsMatcher Contains( std::string const& str, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes );
+    StdString::EndsWithMatcher EndsWith( std::string const& str, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes );
+    StdString::StartsWithMatcher StartsWith( std::string const& str, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes );
+    StdString::RegexMatcher Matches( std::string const& regex, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes );
+
+} // namespace Matchers
+} // namespace Catch
+
+// end catch_matchers_string.h
+// start catch_matchers_vector.h
+
+#include <algorithm>
+
+namespace Catch {
+namespace Matchers {
+
+    namespace Vector {
+        namespace Detail {
+            template <typename InputIterator, typename T>
+            size_t count(InputIterator first, InputIterator last, T const& item) {
+                size_t cnt = 0;
+                for (; first != last; ++first) {
+                    if (*first == item) {
+                        ++cnt;
+                    }
+                }
+                return cnt;
+            }
+            template <typename InputIterator, typename T>
+            bool contains(InputIterator first, InputIterator last, T const& item) {
+                for (; first != last; ++first) {
+                    if (*first == item) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+        }
+
+        template<typename T>
+        struct ContainsElementMatcher : MatcherBase<std::vector<T>> {
+
+            ContainsElementMatcher(T const &comparator) : m_comparator( comparator) {}
+
+            bool match(std::vector<T> const &v) const override {
+                for (auto const& el : v) {
+                    if (el == m_comparator) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+
+            std::string describe() const override {
+                return "Contains: " + ::Catch::Detail::stringify( m_comparator );
+            }
+
+            T const& m_comparator;
+        };
+
+        template<typename T>
+        struct ContainsMatcher : MatcherBase<std::vector<T>> {
+
+            ContainsMatcher(std::vector<T> const &comparator) : m_comparator( comparator ) {}
+
+            bool match(std::vector<T> const &v) const override {
+                // !TBD: see note in EqualsMatcher
+                if (m_comparator.size() > v.size())
+                    return false;
+                for (auto const& comparator : m_comparator) {
+                    auto present = false;
+                    for (const auto& el : v) {
+                        if (el == comparator) {
+                            present = true;
+                            break;
+                        }
+                    }
+                    if (!present) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+            std::string describe() const override {
+                return "Contains: " + ::Catch::Detail::stringify( m_comparator );
+            }
+
+            std::vector<T> const& m_comparator;
+        };
+
+        template<typename T>
+        struct EqualsMatcher : MatcherBase<std::vector<T>> {
+
+            EqualsMatcher(std::vector<T> const &comparator) : m_comparator( comparator ) {}
+
+            bool match(std::vector<T> const &v) const override {
+                // !TBD: This currently works if all elements can be compared using !=
+                // - a more general approach would be via a compare template that defaults
+                // to using !=. but could be specialised for, e.g. std::vector<T> etc
+                // - then just call that directly
+                if (m_comparator.size() != v.size())
+                    return false;
+                for (std::size_t i = 0; i < v.size(); ++i)
+                    if (m_comparator[i] != v[i])
+                        return false;
+                return true;
+            }
+            std::string describe() const override {
+                return "Equals: " + ::Catch::Detail::stringify( m_comparator );
+            }
+            std::vector<T> const& m_comparator;
+        };
+
+        template<typename T>
+        struct UnorderedEqualsMatcher : MatcherBase<std::vector<T>> {
+            UnorderedEqualsMatcher(std::vector<T> const& target) : m_target(target) {}
+            bool match(std::vector<T> const& vec) const override {
+                // Note: This is a reimplementation of std::is_permutation,
+                //       because I don't want to include <algorithm> inside the common path
+                if (m_target.size() != vec.size()) {
+                    return false;
+                }
+                auto lfirst = m_target.begin(), llast = m_target.end();
+                auto rfirst = vec.begin(), rlast = vec.end();
+                // Cut common prefix to optimize checking of permuted parts
+                while (lfirst != llast && *lfirst == *rfirst) {
+                    ++lfirst; ++rfirst;
+                }
+                if (lfirst == llast) {
+                    return true;
+                }
+
+                for (auto mid = lfirst; mid != llast; ++mid) {
+                    // Skip already counted items
+                    if (Detail::contains(lfirst, mid, *mid)) {
+                        continue;
+                    }
+                    size_t num_vec = Detail::count(rfirst, rlast, *mid);
+                    if (num_vec == 0 || Detail::count(lfirst, llast, *mid) != num_vec) {
+                        return false;
+                    }
+                }
+
+                return true;
+            }
+
+            std::string describe() const override {
+                return "UnorderedEquals: " + ::Catch::Detail::stringify(m_target);
+            }
+        private:
+            std::vector<T> const& m_target;
+        };
+
+    } // namespace Vector
+
+    // The following functions create the actual matcher objects.
+    // This allows the types to be inferred
+
+    template<typename T>
+    Vector::ContainsMatcher<T> Contains( std::vector<T> const& comparator ) {
+        return Vector::ContainsMatcher<T>( comparator );
+    }
+
+    template<typename T>
+    Vector::ContainsElementMatcher<T> VectorContains( T const& comparator ) {
+        return Vector::ContainsElementMatcher<T>( comparator );
+    }
+
+    template<typename T>
+    Vector::EqualsMatcher<T> Equals( std::vector<T> const& comparator ) {
+        return Vector::EqualsMatcher<T>( comparator );
+    }
+
+    template<typename T>
+    Vector::UnorderedEqualsMatcher<T> UnorderedEquals(std::vector<T> const& target) {
+        return Vector::UnorderedEqualsMatcher<T>(target);
+    }
+
+} // namespace Matchers
+} // namespace Catch
+
+// end catch_matchers_vector.h
+namespace Catch {
+
+    template<typename ArgT, typename MatcherT>
+    class MatchExpr : public ITransientExpression {
+        ArgT const& m_arg;
+        MatcherT m_matcher;
+        StringRef m_matcherString;
+    public:
+        MatchExpr( ArgT const& arg, MatcherT const& matcher, StringRef const& matcherString )
+        :   ITransientExpression{ true, matcher.match( arg ) },
+            m_arg( arg ),
+            m_matcher( matcher ),
+            m_matcherString( matcherString )
+        {}
+
+        void streamReconstructedExpression( std::ostream &os ) const override {
+            auto matcherAsString = m_matcher.toString();
+            os << Catch::Detail::stringify( m_arg ) << ' ';
+            if( matcherAsString == Detail::unprintableString )
+                os << m_matcherString;
+            else
+                os << matcherAsString;
+        }
+    };
+
+    using StringMatcher = Matchers::Impl::MatcherBase<std::string>;
+
+    void handleExceptionMatchExpr( AssertionHandler& handler, StringMatcher const& matcher, StringRef const& matcherString  );
+
+    template<typename ArgT, typename MatcherT>
+    auto makeMatchExpr( ArgT const& arg, MatcherT const& matcher, StringRef const& matcherString  ) -> MatchExpr<ArgT, MatcherT> {
+        return MatchExpr<ArgT, MatcherT>( arg, matcher, matcherString );
+    }
+
+} // namespace Catch
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CHECK_THAT( macroName, matcher, resultDisposition, arg ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(arg) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
+        INTERNAL_CATCH_TRY { \
+            catchAssertionHandler.handleExpr( Catch::makeMatchExpr( arg, matcher, #matcher##_catch_sr ) ); \
+        } INTERNAL_CATCH_CATCH( catchAssertionHandler ) \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+///////////////////////////////////////////////////////////////////////////////
+#define INTERNAL_CATCH_THROWS_MATCHES( macroName, exceptionType, resultDisposition, matcher, ... ) \
+    do { \
+        Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__) ", " CATCH_INTERNAL_STRINGIFY(exceptionType) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
+        if( catchAssertionHandler.allowThrows() ) \
+            try { \
+                static_cast<void>(__VA_ARGS__ ); \
+                catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
+            } \
+            catch( exceptionType const& ex ) { \
+                catchAssertionHandler.handleExpr( Catch::makeMatchExpr( ex, matcher, #matcher##_catch_sr ) ); \
+            } \
+            catch( ... ) { \
+                catchAssertionHandler.handleUnexpectedInflightException(); \
+            } \
+        else \
+            catchAssertionHandler.handleThrowingCallSkipped(); \
+        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+    } while( false )
+
+// end catch_capture_matchers.h
+#endif
+// start catch_generators.hpp
+
+// start catch_interfaces_generatortracker.h
+
+
+#include <memory>
+
+namespace Catch {
+
+    namespace Generators {
+        class GeneratorBase {
+        protected:
+            size_t m_size = 0;
+
+        public:
+            GeneratorBase( size_t size ) : m_size( size ) {}
+            virtual ~GeneratorBase();
+            auto size() const -> size_t { return m_size; }
+        };
+        using GeneratorBasePtr = std::unique_ptr<GeneratorBase>;
+
+    } // namespace Generators
+
+    struct IGeneratorTracker {
+        virtual ~IGeneratorTracker();
+        virtual auto hasGenerator() const -> bool = 0;
+        virtual auto getGenerator() const -> Generators::GeneratorBasePtr const& = 0;
+        virtual void setGenerator( Generators::GeneratorBasePtr&& generator ) = 0;
+        virtual auto getIndex() const -> std::size_t = 0;
+    };
+
+} // namespace Catch
+
+// end catch_interfaces_generatortracker.h
+// start catch_enforce.h
+
+#include <stdexcept>
+
+namespace Catch {
+#if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+    template <typename Ex>
+    [[noreturn]]
+    void throw_exception(Ex const& e) {
+        throw e;
+    }
+#else // ^^ Exceptions are enabled //  Exceptions are disabled vv
+    [[noreturn]]
+    void throw_exception(std::exception const& e);
+#endif
+} // namespace Catch;
+
+#define CATCH_PREPARE_EXCEPTION( type, msg ) \
+    type( ( Catch::ReusableStringStream() << msg ).str() )
+#define CATCH_INTERNAL_ERROR( msg ) \
+    Catch::throw_exception(CATCH_PREPARE_EXCEPTION( std::logic_error, CATCH_INTERNAL_LINEINFO << ": Internal Catch error: " << msg))
+#define CATCH_ERROR( msg ) \
+    Catch::throw_exception(CATCH_PREPARE_EXCEPTION( std::domain_error, msg ))
+#define CATCH_RUNTIME_ERROR( msg ) \
+    Catch::throw_exception(CATCH_PREPARE_EXCEPTION( std::runtime_error, msg ))
+#define CATCH_ENFORCE( condition, msg ) \
+    do{ if( !(condition) ) CATCH_ERROR( msg ); } while(false)
+
+// end catch_enforce.h
+#include <memory>
+#include <vector>
+#include <cassert>
+
+#include <utility>
+
+namespace Catch {
+namespace Generators {
+
+    // !TBD move this into its own location?
+    namespace pf{
+        template<typename T, typename... Args>
+        std::unique_ptr<T> make_unique( Args&&... args ) {
+            return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+        }
+    }
+
+    template<typename T>
+    struct IGenerator {
+        virtual ~IGenerator() {}
+        virtual auto get( size_t index ) const -> T = 0;
+    };
+
+    template<typename T>
+    class SingleValueGenerator : public IGenerator<T> {
+        T m_value;
+    public:
+        SingleValueGenerator( T const& value ) : m_value( value ) {}
+
+        auto get( size_t ) const -> T override {
+            return m_value;
+        }
+    };
+
+    template<typename T>
+    class FixedValuesGenerator : public IGenerator<T> {
+        std::vector<T> m_values;
+
+    public:
+        FixedValuesGenerator( std::initializer_list<T> values ) : m_values( values ) {}
+
+        auto get( size_t index ) const -> T override {
+            return m_values[index];
+        }
+    };
+
+    template<typename T>
+    class RangeGenerator : public IGenerator<T> {
+        T const m_first;
+        T const m_last;
+
+    public:
+        RangeGenerator( T const& first, T const& last ) : m_first( first ), m_last( last ) {
+            assert( m_last > m_first );
+        }
+
+        auto get( size_t index ) const -> T override {
+            // ToDo:: introduce a safe cast to catch potential overflows
+            return static_cast<T>(m_first+index);
+        }
+    };
+
+    template<typename T>
+    struct NullGenerator : IGenerator<T> {
+        auto get( size_t ) const -> T override {
+            CATCH_INTERNAL_ERROR("A Null Generator is always empty");
+        }
+    };
+
+    template<typename T>
+    class Generator {
+        std::unique_ptr<IGenerator<T>> m_generator;
+        size_t m_size;
+
+    public:
+        Generator( size_t size, std::unique_ptr<IGenerator<T>> generator )
+        :   m_generator( std::move( generator ) ),
+            m_size( size )
+        {}
+
+        auto size() const -> size_t { return m_size; }
+        auto operator[]( size_t index ) const -> T {
+            assert( index < m_size );
+            return m_generator->get( index );
+        }
+    };
+
+    std::vector<size_t> randomiseIndices( size_t selectionSize, size_t sourceSize );
+
+    template<typename T>
+    class GeneratorRandomiser : public IGenerator<T> {
+        Generator<T> m_baseGenerator;
+
+        std::vector<size_t> m_indices;
+    public:
+        GeneratorRandomiser( Generator<T>&& baseGenerator, size_t numberOfItems )
+        :   m_baseGenerator( std::move( baseGenerator ) ),
+            m_indices( randomiseIndices( numberOfItems, m_baseGenerator.size() ) )
+        {}
+
+        auto get( size_t index ) const -> T override {
+            return m_baseGenerator[m_indices[index]];
+        }
+    };
+
+    template<typename T>
+    struct RequiresASpecialisationFor;
+
+    template<typename T>
+    auto all() -> Generator<T> { return RequiresASpecialisationFor<T>(); }
+
+    template<>
+    auto all<int>() -> Generator<int>;
+
+    template<typename T>
+    auto range( T const& first, T const& last ) -> Generator<T> {
+        return Generator<T>( (last-first), pf::make_unique<RangeGenerator<T>>( first, last ) );
+    }
+
+    template<typename T>
+    auto random( T const& first, T const& last ) -> Generator<T> {
+        auto gen = range( first, last );
+        auto size = gen.size();
+
+        return Generator<T>( size, pf::make_unique<GeneratorRandomiser<T>>( std::move( gen ), size ) );
+    }
+    template<typename T>
+    auto random( size_t size ) -> Generator<T> {
+        return Generator<T>( size, pf::make_unique<GeneratorRandomiser<T>>( all<T>(), size ) );
+    }
+
+    template<typename T>
+    auto values( std::initializer_list<T> values ) -> Generator<T> {
+        return Generator<T>( values.size(), pf::make_unique<FixedValuesGenerator<T>>( values ) );
+    }
+    template<typename T>
+    auto value( T const& val ) -> Generator<T> {
+        return Generator<T>( 1, pf::make_unique<SingleValueGenerator<T>>( val ) );
+    }
+
+    template<typename T>
+    auto as() -> Generator<T> {
+        return Generator<T>( 0, pf::make_unique<NullGenerator<T>>() );
+    }
+
+    template<typename... Ts>
+    auto table( std::initializer_list<std::tuple<Ts...>>&& tuples ) -> Generator<std::tuple<Ts...>> {
+        return values<std::tuple<Ts...>>( std::forward<std::initializer_list<std::tuple<Ts...>>>( tuples ) );
+    }
+
+    template<typename T>
+    struct Generators : GeneratorBase {
+        std::vector<Generator<T>> m_generators;
+
+        using type = T;
+
+        Generators() : GeneratorBase( 0 ) {}
+
+        void populate( T&& val ) {
+            m_size += 1;
+            m_generators.emplace_back( value( std::move( val ) ) );
+        }
+        template<typename U>
+        void populate( U&& val ) {
+            populate( T( std::move( val ) ) );
+        }
+        void populate( Generator<T>&& generator ) {
+            m_size += generator.size();
+            m_generators.emplace_back( std::move( generator ) );
+        }
+
+        template<typename U, typename... Gs>
+        void populate( U&& valueOrGenerator, Gs... moreGenerators ) {
+            populate( std::forward<U>( valueOrGenerator ) );
+            populate( std::forward<Gs>( moreGenerators )... );
+        }
+
+        auto operator[]( size_t index ) const -> T {
+            size_t sizes = 0;
+            for( auto const& gen : m_generators ) {
+                auto localIndex = index-sizes;
+                sizes += gen.size();
+                if( index < sizes )
+                    return gen[localIndex];
+            }
+            CATCH_INTERNAL_ERROR("Index '" << index << "' is out of range (" << sizes << ')');
+        }
+    };
+
+    template<typename T, typename... Gs>
+    auto makeGenerators( Generator<T>&& generator, Gs... moreGenerators ) -> Generators<T> {
+        Generators<T> generators;
+        generators.m_generators.reserve( 1+sizeof...(Gs) );
+        generators.populate( std::move( generator ), std::forward<Gs>( moreGenerators )... );
+        return generators;
+    }
+    template<typename T>
+    auto makeGenerators( Generator<T>&& generator ) -> Generators<T> {
+        Generators<T> generators;
+        generators.populate( std::move( generator ) );
+        return generators;
+    }
+    template<typename T, typename... Gs>
+    auto makeGenerators( T&& val, Gs... moreGenerators ) -> Generators<T> {
+        return makeGenerators( value( std::forward<T>( val ) ), std::forward<Gs>( moreGenerators )... );
+    }
+    template<typename T, typename U, typename... Gs>
+    auto makeGenerators( U&& val, Gs... moreGenerators ) -> Generators<T> {
+        return makeGenerators( value( T( std::forward<U>( val ) ) ), std::forward<Gs>( moreGenerators )... );
+    }
+
+    auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker&;
+
+    template<typename L>
+    // Note: The type after -> is weird, because VS2015 cannot parse
+    //       the expression used in the typedef inside, when it is in
+    //       return type. Yeah, ¯\_(ツ)_/¯
+    auto generate( SourceLineInfo const& lineInfo, L const& generatorExpression ) -> decltype(std::declval<decltype(generatorExpression())>()[0]) {
+        using UnderlyingType = typename decltype(generatorExpression())::type;
+
+        IGeneratorTracker& tracker = acquireGeneratorTracker( lineInfo );
+        if( !tracker.hasGenerator() )
+            tracker.setGenerator( pf::make_unique<Generators<UnderlyingType>>( generatorExpression() ) );
+
+        auto const& generator = static_cast<Generators<UnderlyingType> const&>( *tracker.getGenerator() );
+        return generator[tracker.getIndex()];
+    }
+
+} // namespace Generators
+} // namespace Catch
+
+#define GENERATE( ... ) \
+    Catch::Generators::generate( CATCH_INTERNAL_LINEINFO, []{ using namespace Catch::Generators; return makeGenerators( __VA_ARGS__ ); } )
+
+// end catch_generators.hpp
+
+// These files are included here so the single_include script doesn't put them
+// in the conditionally compiled sections
+// start catch_test_case_info.h
+
+#include <string>
+#include <vector>
+#include <memory>
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+#endif
+
+namespace Catch {
+
+    struct ITestInvoker;
+
+    struct TestCaseInfo {
+        enum SpecialProperties{
+            None = 0,
+            IsHidden = 1 << 1,
+            ShouldFail = 1 << 2,
+            MayFail = 1 << 3,
+            Throws = 1 << 4,
+            NonPortable = 1 << 5,
+            Benchmark = 1 << 6
+        };
+
+        TestCaseInfo(   std::string const& _name,
+                        std::string const& _className,
+                        std::string const& _description,
+                        std::vector<std::string> const& _tags,
+                        SourceLineInfo const& _lineInfo );
+
+        friend void setTags( TestCaseInfo& testCaseInfo, std::vector<std::string> tags );
+
+        bool isHidden() const;
+        bool throws() const;
+        bool okToFail() const;
+        bool expectedToFail() const;
+
+        std::string tagsAsString() const;
+
+        std::string name;
+        std::string className;
+        std::string description;
+        std::vector<std::string> tags;
+        std::vector<std::string> lcaseTags;
+        SourceLineInfo lineInfo;
+        SpecialProperties properties;
+    };
+
+    class TestCase : public TestCaseInfo {
+    public:
+
+        TestCase( ITestInvoker* testCase, TestCaseInfo&& info );
+
+        TestCase withName( std::string const& _newName ) const;
+
+        void invoke() const;
+
+        TestCaseInfo const& getTestCaseInfo() const;
+
+        bool operator == ( TestCase const& other ) const;
+        bool operator < ( TestCase const& other ) const;
+
+    private:
+        std::shared_ptr<ITestInvoker> test;
+    };
+
+    TestCase makeTestCase(  ITestInvoker* testCase,
+                            std::string const& className,
+                            NameAndTags const& nameAndTags,
+                            SourceLineInfo const& lineInfo );
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// end catch_test_case_info.h
+// start catch_interfaces_runner.h
+
+namespace Catch {
+
+    struct IRunner {
+        virtual ~IRunner();
+        virtual bool aborting() const = 0;
+    };
+}
+
+// end catch_interfaces_runner.h
+
+#ifdef __OBJC__
+// start catch_objc.hpp
+
+#import <objc/runtime.h>
+
+#include <string>
+
+// NB. Any general catch headers included here must be included
+// in catch.hpp first to make sure they are included by the single
+// header for non obj-usage
+
+///////////////////////////////////////////////////////////////////////////////
+// This protocol is really only here for (self) documenting purposes, since
+// all its methods are optional.
+@protocol OcFixture
+
+@optional
+
+-(void) setUp;
+-(void) tearDown;
+
+@end
+
+namespace Catch {
+
+    class OcMethod : public ITestInvoker {
+
+    public:
+        OcMethod( Class cls, SEL sel ) : m_cls( cls ), m_sel( sel ) {}
+
+        virtual void invoke() const {
+            id obj = [[m_cls alloc] init];
+
+            performOptionalSelector( obj, @selector(setUp)  );
+            performOptionalSelector( obj, m_sel );
+            performOptionalSelector( obj, @selector(tearDown)  );
+
+            arcSafeRelease( obj );
+        }
+    private:
+        virtual ~OcMethod() {}
+
+        Class m_cls;
+        SEL m_sel;
+    };
+
+    namespace Detail{
+
+        inline std::string getAnnotation(   Class cls,
+                                            std::string const& annotationName,
+                                            std::string const& testCaseName ) {
+            NSString* selStr = [[NSString alloc] initWithFormat:@"Catch_%s_%s", annotationName.c_str(), testCaseName.c_str()];
+            SEL sel = NSSelectorFromString( selStr );
+            arcSafeRelease( selStr );
+            id value = performOptionalSelector( cls, sel );
+            if( value )
+                return [(NSString*)value UTF8String];
+            return "";
+        }
+    }
+
+    inline std::size_t registerTestMethods() {
+        std::size_t noTestMethods = 0;
+        int noClasses = objc_getClassList( nullptr, 0 );
+
+        Class* classes = (CATCH_UNSAFE_UNRETAINED Class *)malloc( sizeof(Class) * noClasses);
+        objc_getClassList( classes, noClasses );
+
+        for( int c = 0; c < noClasses; c++ ) {
+            Class cls = classes[c];
+            {
+                u_int count;
+                Method* methods = class_copyMethodList( cls, &count );
+                for( u_int m = 0; m < count ; m++ ) {
+                    SEL selector = method_getName(methods[m]);
+                    std::string methodName = sel_getName(selector);
+                    if( startsWith( methodName, "Catch_TestCase_" ) ) {
+                        std::string testCaseName = methodName.substr( 15 );
+                        std::string name = Detail::getAnnotation( cls, "Name", testCaseName );
+                        std::string desc = Detail::getAnnotation( cls, "Description", testCaseName );
+                        const char* className = class_getName( cls );
+
+                        getMutableRegistryHub().registerTest( makeTestCase( new OcMethod( cls, selector ), className, NameAndTags( name.c_str(), desc.c_str() ), SourceLineInfo("",0) ) );
+                        noTestMethods++;
+                    }
+                }
+                free(methods);
+            }
+        }
+        return noTestMethods;
+    }
+
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+
+    namespace Matchers {
+        namespace Impl {
+        namespace NSStringMatchers {
+
+            struct StringHolder : MatcherBase<NSString*>{
+                StringHolder( NSString* substr ) : m_substr( [substr copy] ){}
+                StringHolder( StringHolder const& other ) : m_substr( [other.m_substr copy] ){}
+                StringHolder() {
+                    arcSafeRelease( m_substr );
+                }
+
+                bool match( NSString* arg ) const override {
+                    return false;
+                }
+
+                NSString* CATCH_ARC_STRONG m_substr;
+            };
+
+            struct Equals : StringHolder {
+                Equals( NSString* substr ) : StringHolder( substr ){}
+
+                bool match( NSString* str ) const override {
+                    return  (str != nil || m_substr == nil ) &&
+                            [str isEqualToString:m_substr];
+                }
+
+                std::string describe() const override {
+                    return "equals string: " + Catch::Detail::stringify( m_substr );
+                }
+            };
+
+            struct Contains : StringHolder {
+                Contains( NSString* substr ) : StringHolder( substr ){}
+
+                bool match( NSString* str ) const {
+                    return  (str != nil || m_substr == nil ) &&
+                            [str rangeOfString:m_substr].location != NSNotFound;
+                }
+
+                std::string describe() const override {
+                    return "contains string: " + Catch::Detail::stringify( m_substr );
+                }
+            };
+
+            struct StartsWith : StringHolder {
+                StartsWith( NSString* substr ) : StringHolder( substr ){}
+
+                bool match( NSString* str ) const override {
+                    return  (str != nil || m_substr == nil ) &&
+                            [str rangeOfString:m_substr].location == 0;
+                }
+
+                std::string describe() const override {
+                    return "starts with: " + Catch::Detail::stringify( m_substr );
+                }
+            };
+            struct EndsWith : StringHolder {
+                EndsWith( NSString* substr ) : StringHolder( substr ){}
+
+                bool match( NSString* str ) const override {
+                    return  (str != nil || m_substr == nil ) &&
+                            [str rangeOfString:m_substr].location == [str length] - [m_substr length];
+                }
+
+                std::string describe() const override {
+                    return "ends with: " + Catch::Detail::stringify( m_substr );
+                }
+            };
+
+        } // namespace NSStringMatchers
+        } // namespace Impl
+
+        inline Impl::NSStringMatchers::Equals
+            Equals( NSString* substr ){ return Impl::NSStringMatchers::Equals( substr ); }
+
+        inline Impl::NSStringMatchers::Contains
+            Contains( NSString* substr ){ return Impl::NSStringMatchers::Contains( substr ); }
+
+        inline Impl::NSStringMatchers::StartsWith
+            StartsWith( NSString* substr ){ return Impl::NSStringMatchers::StartsWith( substr ); }
+
+        inline Impl::NSStringMatchers::EndsWith
+            EndsWith( NSString* substr ){ return Impl::NSStringMatchers::EndsWith( substr ); }
+
+    } // namespace Matchers
+
+    using namespace Matchers;
+
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+
+} // namespace Catch
+
+///////////////////////////////////////////////////////////////////////////////
+#define OC_MAKE_UNIQUE_NAME( root, uniqueSuffix ) root##uniqueSuffix
+#define OC_TEST_CASE2( name, desc, uniqueSuffix ) \
++(NSString*) OC_MAKE_UNIQUE_NAME( Catch_Name_test_, uniqueSuffix ) \
+{ \
+return @ name; \
+} \
++(NSString*) OC_MAKE_UNIQUE_NAME( Catch_Description_test_, uniqueSuffix ) \
+{ \
+return @ desc; \
+} \
+-(void) OC_MAKE_UNIQUE_NAME( Catch_TestCase_test_, uniqueSuffix )
+
+#define OC_TEST_CASE( name, desc ) OC_TEST_CASE2( name, desc, __LINE__ )
+
+// end catch_objc.hpp
+#endif
+
+#ifdef CATCH_CONFIG_EXTERNAL_INTERFACES
+// start catch_external_interfaces.h
+
+// start catch_reporter_bases.hpp
+
+// start catch_interfaces_reporter.h
+
+// start catch_config.hpp
+
+// start catch_test_spec_parser.h
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+#endif
+
+// start catch_test_spec.h
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+#endif
+
+// start catch_wildcard_pattern.h
+
+namespace Catch
+{
+    class WildcardPattern {
+        enum WildcardPosition {
+            NoWildcard = 0,
+            WildcardAtStart = 1,
+            WildcardAtEnd = 2,
+            WildcardAtBothEnds = WildcardAtStart | WildcardAtEnd
+        };
+
+    public:
+
+        WildcardPattern( std::string const& pattern, CaseSensitive::Choice caseSensitivity );
+        virtual ~WildcardPattern() = default;
+        virtual bool matches( std::string const& str ) const;
+
+    private:
+        std::string adjustCase( std::string const& str ) const;
+        CaseSensitive::Choice m_caseSensitivity;
+        WildcardPosition m_wildcard = NoWildcard;
+        std::string m_pattern;
+    };
+}
+
+// end catch_wildcard_pattern.h
+#include <string>
+#include <vector>
+#include <memory>
+
+namespace Catch {
+
+    class TestSpec {
+        struct Pattern {
+            virtual ~Pattern();
+            virtual bool matches( TestCaseInfo const& testCase ) const = 0;
+        };
+        using PatternPtr = std::shared_ptr<Pattern>;
+
+        class NamePattern : public Pattern {
+        public:
+            NamePattern( std::string const& name );
+            virtual ~NamePattern();
+            virtual bool matches( TestCaseInfo const& testCase ) const override;
+        private:
+            WildcardPattern m_wildcardPattern;
+        };
+
+        class TagPattern : public Pattern {
+        public:
+            TagPattern( std::string const& tag );
+            virtual ~TagPattern();
+            virtual bool matches( TestCaseInfo const& testCase ) const override;
+        private:
+            std::string m_tag;
+        };
+
+        class ExcludedPattern : public Pattern {
+        public:
+            ExcludedPattern( PatternPtr const& underlyingPattern );
+            virtual ~ExcludedPattern();
+            virtual bool matches( TestCaseInfo const& testCase ) const override;
+        private:
+            PatternPtr m_underlyingPattern;
+        };
+
+        struct Filter {
+            std::vector<PatternPtr> m_patterns;
+
+            bool matches( TestCaseInfo const& testCase ) const;
+        };
+
+    public:
+        bool hasFilters() const;
+        bool matches( TestCaseInfo const& testCase ) const;
+
+    private:
+        std::vector<Filter> m_filters;
+
+        friend class TestSpecParser;
+    };
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// end catch_test_spec.h
+// start catch_interfaces_tag_alias_registry.h
+
+#include <string>
+
+namespace Catch {
+
+    struct TagAlias;
+
+    struct ITagAliasRegistry {
+        virtual ~ITagAliasRegistry();
+        // Nullptr if not present
+        virtual TagAlias const* find( std::string const& alias ) const = 0;
+        virtual std::string expandAliases( std::string const& unexpandedTestSpec ) const = 0;
+
+        static ITagAliasRegistry const& get();
+    };
+
+} // end namespace Catch
+
+// end catch_interfaces_tag_alias_registry.h
+namespace Catch {
+
+    class TestSpecParser {
+        enum Mode{ None, Name, QuotedName, Tag, EscapedName };
+        Mode m_mode = None;
+        bool m_exclusion = false;
+        std::size_t m_start = std::string::npos, m_pos = 0;
+        std::string m_arg;
+        std::vector<std::size_t> m_escapeChars;
+        TestSpec::Filter m_currentFilter;
+        TestSpec m_testSpec;
+        ITagAliasRegistry const* m_tagAliases = nullptr;
+
+    public:
+        TestSpecParser( ITagAliasRegistry const& tagAliases );
+
+        TestSpecParser& parse( std::string const& arg );
+        TestSpec testSpec();
+
+    private:
+        void visitChar( char c );
+        void startNewMode( Mode mode, std::size_t start );
+        void escape();
+        std::string subString() const;
+
+        template<typename T>
+        void addPattern() {
+            std::string token = subString();
+            for( std::size_t i = 0; i < m_escapeChars.size(); ++i )
+                token = token.substr( 0, m_escapeChars[i]-m_start-i ) + token.substr( m_escapeChars[i]-m_start-i+1 );
+            m_escapeChars.clear();
+            if( startsWith( token, "exclude:" ) ) {
+                m_exclusion = true;
+                token = token.substr( 8 );
+            }
+            if( !token.empty() ) {
+                TestSpec::PatternPtr pattern = std::make_shared<T>( token );
+                if( m_exclusion )
+                    pattern = std::make_shared<TestSpec::ExcludedPattern>( pattern );
+                m_currentFilter.m_patterns.push_back( pattern );
+            }
+            m_exclusion = false;
+            m_mode = None;
+        }
+
+        void addFilter();
+    };
+    TestSpec parseTestSpec( std::string const& arg );
+
+} // namespace Catch
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// end catch_test_spec_parser.h
+// start catch_interfaces_config.h
+
+#include <iosfwd>
+#include <string>
+#include <vector>
+#include <memory>
+
+namespace Catch {
+
+    enum class Verbosity {
+        Quiet = 0,
+        Normal,
+        High
+    };
+
+    struct WarnAbout { enum What {
+        Nothing = 0x00,
+        NoAssertions = 0x01,
+        NoTests = 0x02
+    }; };
+
+    struct ShowDurations { enum OrNot {
+        DefaultForReporter,
+        Always,
+        Never
+    }; };
+    struct RunTests { enum InWhatOrder {
+        InDeclarationOrder,
+        InLexicographicalOrder,
+        InRandomOrder
+    }; };
+    struct UseColour { enum YesOrNo {
+        Auto,
+        Yes,
+        No
+    }; };
+    struct WaitForKeypress { enum When {
+        Never,
+        BeforeStart = 1,
+        BeforeExit = 2,
+        BeforeStartAndExit = BeforeStart | BeforeExit
+    }; };
+
+    class TestSpec;
+
+    struct IConfig : NonCopyable {
+
+        virtual ~IConfig();
+
+        virtual bool allowThrows() const = 0;
+        virtual std::ostream& stream() const = 0;
+        virtual std::string name() const = 0;
+        virtual bool includeSuccessfulResults() const = 0;
+        virtual bool shouldDebugBreak() const = 0;
+        virtual bool warnAboutMissingAssertions() const = 0;
+        virtual bool warnAboutNoTests() const = 0;
+        virtual int abortAfter() const = 0;
+        virtual bool showInvisibles() const = 0;
+        virtual ShowDurations::OrNot showDurations() const = 0;
+        virtual TestSpec const& testSpec() const = 0;
+        virtual bool hasTestFilters() const = 0;
+        virtual RunTests::InWhatOrder runOrder() const = 0;
+        virtual unsigned int rngSeed() const = 0;
+        virtual int benchmarkResolutionMultiple() const = 0;
+        virtual UseColour::YesOrNo useColour() const = 0;
+        virtual std::vector<std::string> const& getSectionsToRun() const = 0;
+        virtual Verbosity verbosity() const = 0;
+    };
+
+    using IConfigPtr = std::shared_ptr<IConfig const>;
+}
+
+// end catch_interfaces_config.h
+// Libstdc++ doesn't like incomplete classes for unique_ptr
+
+#include <memory>
+#include <vector>
+#include <string>
+
+#ifndef CATCH_CONFIG_CONSOLE_WIDTH
+#define CATCH_CONFIG_CONSOLE_WIDTH 80
+#endif
+
+namespace Catch {
+
+    struct IStream;
+
+    struct ConfigData {
+        bool listTests = false;
+        bool listTags = false;
+        bool listReporters = false;
+        bool listTestNamesOnly = false;
+
+        bool showSuccessfulTests = false;
+        bool shouldDebugBreak = false;
+        bool noThrow = false;
+        bool showHelp = false;
+        bool showInvisibles = false;
+        bool filenamesAsTags = false;
+        bool libIdentify = false;
+
+        int abortAfter = -1;
+        unsigned int rngSeed = 0;
+        int benchmarkResolutionMultiple = 100;
+
+        Verbosity verbosity = Verbosity::Normal;
+        WarnAbout::What warnings = WarnAbout::Nothing;
+        ShowDurations::OrNot showDurations = ShowDurations::DefaultForReporter;
+        RunTests::InWhatOrder runOrder = RunTests::InDeclarationOrder;
+        UseColour::YesOrNo useColour = UseColour::Auto;
+        WaitForKeypress::When waitForKeypress = WaitForKeypress::Never;
+
+        std::string outputFilename;
+        std::string name;
+        std::string processName;
+#ifndef CATCH_CONFIG_DEFAULT_REPORTER
+#define CATCH_CONFIG_DEFAULT_REPORTER "console"
+#endif
+        std::string reporterName = CATCH_CONFIG_DEFAULT_REPORTER;
+#undef CATCH_CONFIG_DEFAULT_REPORTER
+
+        std::vector<std::string> testsOrTags;
+        std::vector<std::string> sectionsToRun;
+    };
+
+    class Config : public IConfig {
+    public:
+
+        Config() = default;
+        Config( ConfigData const& data );
+        virtual ~Config() = default;
+
+        std::string const& getFilename() const;
+
+        bool listTests() const;
+        bool listTestNamesOnly() const;
+        bool listTags() const;
+        bool listReporters() const;
+
+        std::string getProcessName() const;
+        std::string const& getReporterName() const;
+
+        std::vector<std::string> const& getTestsOrTags() const;
+        std::vector<std::string> const& getSectionsToRun() const override;
+
+        virtual TestSpec const& testSpec() const override;
+        bool hasTestFilters() const override;
+
+        bool showHelp() const;
+
+        // IConfig interface
+        bool allowThrows() const override;
+        std::ostream& stream() const override;
+        std::string name() const override;
+        bool includeSuccessfulResults() const override;
+        bool warnAboutMissingAssertions() const override;
+        bool warnAboutNoTests() const override;
+        ShowDurations::OrNot showDurations() const override;
+        RunTests::InWhatOrder runOrder() const override;
+        unsigned int rngSeed() const override;
+        int benchmarkResolutionMultiple() const override;
+        UseColour::YesOrNo useColour() const override;
+        bool shouldDebugBreak() const override;
+        int abortAfter() const override;
+        bool showInvisibles() const override;
+        Verbosity verbosity() const override;
+
+    private:
+
+        IStream const* openStream();
+        ConfigData m_data;
+
+        std::unique_ptr<IStream const> m_stream;
+        TestSpec m_testSpec;
+        bool m_hasTestFilters = false;
+    };
+
+} // end namespace Catch
+
+// end catch_config.hpp
+// start catch_assertionresult.h
+
+#include <string>
+
+namespace Catch {
+
+    struct AssertionResultData
+    {
+        AssertionResultData() = delete;
+
+        AssertionResultData( ResultWas::OfType _resultType, LazyExpression const& _lazyExpression );
+
+        std::string message;
+        mutable std::string reconstructedExpression;
+        LazyExpression lazyExpression;
+        ResultWas::OfType resultType;
+
+        std::string reconstructExpression() const;
+    };
+
+    class AssertionResult {
+    public:
+        AssertionResult() = delete;
+        AssertionResult( AssertionInfo const& info, AssertionResultData const& data );
+
+        bool isOk() const;
+        bool succeeded() const;
+        ResultWas::OfType getResultType() const;
+        bool hasExpression() const;
+        bool hasMessage() const;
+        std::string getExpression() const;
+        std::string getExpressionInMacro() const;
+        bool hasExpandedExpression() const;
+        std::string getExpandedExpression() const;
+        std::string getMessage() const;
+        SourceLineInfo getSourceInfo() const;
+        StringRef getTestMacroName() const;
+
+    //protected:
+        AssertionInfo m_info;
+        AssertionResultData m_resultData;
+    };
+
+} // end namespace Catch
+
+// end catch_assertionresult.h
+// start catch_option.hpp
+
+namespace Catch {
+
+    // An optional type
+    template<typename T>
+    class Option {
+    public:
+        Option() : nullableValue( nullptr ) {}
+        Option( T const& _value )
+        : nullableValue( new( storage ) T( _value ) )
+        {}
+        Option( Option const& _other )
+        : nullableValue( _other ? new( storage ) T( *_other ) : nullptr )
+        {}
+
+        ~Option() {
+            reset();
+        }
+
+        Option& operator= ( Option const& _other ) {
+            if( &_other != this ) {
+                reset();
+                if( _other )
+                    nullableValue = new( storage ) T( *_other );
+            }
+            return *this;
+        }
+        Option& operator = ( T const& _value ) {
+            reset();
+            nullableValue = new( storage ) T( _value );
+            return *this;
+        }
+
+        void reset() {
+            if( nullableValue )
+                nullableValue->~T();
+            nullableValue = nullptr;
+        }
+
+        T& operator*() { return *nullableValue; }
+        T const& operator*() const { return *nullableValue; }
+        T* operator->() { return nullableValue; }
+        const T* operator->() const { return nullableValue; }
+
+        T valueOr( T const& defaultValue ) const {
+            return nullableValue ? *nullableValue : defaultValue;
+        }
+
+        bool some() const { return nullableValue != nullptr; }
+        bool none() const { return nullableValue == nullptr; }
+
+        bool operator !() const { return nullableValue == nullptr; }
+        explicit operator bool() const {
+            return some();
+        }
+
+    private:
+        T *nullableValue;
+        alignas(alignof(T)) char storage[sizeof(T)];
+    };
+
+} // end namespace Catch
+
+// end catch_option.hpp
+#include <string>
+#include <iosfwd>
+#include <map>
+#include <set>
+#include <memory>
+
+namespace Catch {
+
+    struct ReporterConfig {
+        explicit ReporterConfig( IConfigPtr const& _fullConfig );
+
+        ReporterConfig( IConfigPtr const& _fullConfig, std::ostream& _stream );
+
+        std::ostream& stream() const;
+        IConfigPtr fullConfig() const;
+
+    private:
+        std::ostream* m_stream;
+        IConfigPtr m_fullConfig;
+    };
+
+    struct ReporterPreferences {
+        bool shouldRedirectStdOut = false;
+        bool shouldReportAllAssertions = false;
+    };
+
+    template<typename T>
+    struct LazyStat : Option<T> {
+        LazyStat& operator=( T const& _value ) {
+            Option<T>::operator=( _value );
+            used = false;
+            return *this;
+        }
+        void reset() {
+            Option<T>::reset();
+            used = false;
+        }
+        bool used = false;
+    };
+
+    struct TestRunInfo {
+        TestRunInfo( std::string const& _name );
+        std::string name;
+    };
+    struct GroupInfo {
+        GroupInfo(  std::string const& _name,
+                    std::size_t _groupIndex,
+                    std::size_t _groupsCount );
+
+        std::string name;
+        std::size_t groupIndex;
+        std::size_t groupsCounts;
+    };
+
+    struct AssertionStats {
+        AssertionStats( AssertionResult const& _assertionResult,
+                        std::vector<MessageInfo> const& _infoMessages,
+                        Totals const& _totals );
+
+        AssertionStats( AssertionStats const& )              = default;
+        AssertionStats( AssertionStats && )                  = default;
+        AssertionStats& operator = ( AssertionStats const& ) = default;
+        AssertionStats& operator = ( AssertionStats && )     = default;
+        virtual ~AssertionStats();
+
+        AssertionResult assertionResult;
+        std::vector<MessageInfo> infoMessages;
+        Totals totals;
+    };
+
+    struct SectionStats {
+        SectionStats(   SectionInfo const& _sectionInfo,
+                        Counts const& _assertions,
+                        double _durationInSeconds,
+                        bool _missingAssertions );
+        SectionStats( SectionStats const& )              = default;
+        SectionStats( SectionStats && )                  = default;
+        SectionStats& operator = ( SectionStats const& ) = default;
+        SectionStats& operator = ( SectionStats && )     = default;
+        virtual ~SectionStats();
+
+        SectionInfo sectionInfo;
+        Counts assertions;
+        double durationInSeconds;
+        bool missingAssertions;
+    };
+
+    struct TestCaseStats {
+        TestCaseStats(  TestCaseInfo const& _testInfo,
+                        Totals const& _totals,
+                        std::string const& _stdOut,
+                        std::string const& _stdErr,
+                        bool _aborting );
+
+        TestCaseStats( TestCaseStats const& )              = default;
+        TestCaseStats( TestCaseStats && )                  = default;
+        TestCaseStats& operator = ( TestCaseStats const& ) = default;
+        TestCaseStats& operator = ( TestCaseStats && )     = default;
+        virtual ~TestCaseStats();
+
+        TestCaseInfo testInfo;
+        Totals totals;
+        std::string stdOut;
+        std::string stdErr;
+        bool aborting;
+    };
+
+    struct TestGroupStats {
+        TestGroupStats( GroupInfo const& _groupInfo,
+                        Totals const& _totals,
+                        bool _aborting );
+        TestGroupStats( GroupInfo const& _groupInfo );
+
+        TestGroupStats( TestGroupStats const& )              = default;
+        TestGroupStats( TestGroupStats && )                  = default;
+        TestGroupStats& operator = ( TestGroupStats const& ) = default;
+        TestGroupStats& operator = ( TestGroupStats && )     = default;
+        virtual ~TestGroupStats();
+
+        GroupInfo groupInfo;
+        Totals totals;
+        bool aborting;
+    };
+
+    struct TestRunStats {
+        TestRunStats(   TestRunInfo const& _runInfo,
+                        Totals const& _totals,
+                        bool _aborting );
+
+        TestRunStats( TestRunStats const& )              = default;
+        TestRunStats( TestRunStats && )                  = default;
+        TestRunStats& operator = ( TestRunStats const& ) = default;
+        TestRunStats& operator = ( TestRunStats && )     = default;
+        virtual ~TestRunStats();
+
+        TestRunInfo runInfo;
+        Totals totals;
+        bool aborting;
+    };
+
+    struct BenchmarkInfo {
+        std::string name;
+    };
+    struct BenchmarkStats {
+        BenchmarkInfo info;
+        std::size_t iterations;
+        uint64_t elapsedTimeInNanoseconds;
+    };
+
+    struct IStreamingReporter {
+        virtual ~IStreamingReporter() = default;
+
+        // Implementing class must also provide the following static methods:
+        // static std::string getDescription();
+        // static std::set<Verbosity> getSupportedVerbosities()
+
+        virtual ReporterPreferences getPreferences() const = 0;
+
+        virtual void noMatchingTestCases( std::string const& spec ) = 0;
+
+        virtual void testRunStarting( TestRunInfo const& testRunInfo ) = 0;
+        virtual void testGroupStarting( GroupInfo const& groupInfo ) = 0;
+
+        virtual void testCaseStarting( TestCaseInfo const& testInfo ) = 0;
+        virtual void sectionStarting( SectionInfo const& sectionInfo ) = 0;
+
+        // *** experimental ***
+        virtual void benchmarkStarting( BenchmarkInfo const& ) {}
+
+        virtual void assertionStarting( AssertionInfo const& assertionInfo ) = 0;
+
+        // The return value indicates if the messages buffer should be cleared:
+        virtual bool assertionEnded( AssertionStats const& assertionStats ) = 0;
+
+        // *** experimental ***
+        virtual void benchmarkEnded( BenchmarkStats const& ) {}
+
+        virtual void sectionEnded( SectionStats const& sectionStats ) = 0;
+        virtual void testCaseEnded( TestCaseStats const& testCaseStats ) = 0;
+        virtual void testGroupEnded( TestGroupStats const& testGroupStats ) = 0;
+        virtual void testRunEnded( TestRunStats const& testRunStats ) = 0;
+
+        virtual void skipTest( TestCaseInfo const& testInfo ) = 0;
+
+        // Default empty implementation provided
+        virtual void fatalErrorEncountered( StringRef name );
+
+        virtual bool isMulti() const;
+    };
+    using IStreamingReporterPtr = std::unique_ptr<IStreamingReporter>;
+
+    struct IReporterFactory {
+        virtual ~IReporterFactory();
+        virtual IStreamingReporterPtr create( ReporterConfig const& config ) const = 0;
+        virtual std::string getDescription() const = 0;
+    };
+    using IReporterFactoryPtr = std::shared_ptr<IReporterFactory>;
+
+    struct IReporterRegistry {
+        using FactoryMap = std::map<std::string, IReporterFactoryPtr>;
+        using Listeners = std::vector<IReporterFactoryPtr>;
+
+        virtual ~IReporterRegistry();
+        virtual IStreamingReporterPtr create( std::string const& name, IConfigPtr const& config ) const = 0;
+        virtual FactoryMap const& getFactories() const = 0;
+        virtual Listeners const& getListeners() const = 0;
+    };
+
+} // end namespace Catch
+
+// end catch_interfaces_reporter.h
+#include <algorithm>
+#include <cstring>
+#include <cfloat>
+#include <cstdio>
+#include <cassert>
+#include <memory>
+#include <ostream>
+
+namespace Catch {
+    void prepareExpandedExpression(AssertionResult& result);
+
+    // Returns double formatted as %.3f (format expected on output)
+    std::string getFormattedDuration( double duration );
+
+    template<typename DerivedT>
+    struct StreamingReporterBase : IStreamingReporter {
+
+        StreamingReporterBase( ReporterConfig const& _config )
+        :   m_config( _config.fullConfig() ),
+            stream( _config.stream() )
+        {
+            m_reporterPrefs.shouldRedirectStdOut = false;
+            if( !DerivedT::getSupportedVerbosities().count( m_config->verbosity() ) )
+                CATCH_ERROR( "Verbosity level not supported by this reporter" );
+        }
+
+        ReporterPreferences getPreferences() const override {
+            return m_reporterPrefs;
+        }
+
+        static std::set<Verbosity> getSupportedVerbosities() {
+            return { Verbosity::Normal };
+        }
+
+        ~StreamingReporterBase() override = default;
+
+        void noMatchingTestCases(std::string const&) override {}
+
+        void testRunStarting(TestRunInfo const& _testRunInfo) override {
+            currentTestRunInfo = _testRunInfo;
+        }
+        void testGroupStarting(GroupInfo const& _groupInfo) override {
+            currentGroupInfo = _groupInfo;
+        }
+
+        void testCaseStarting(TestCaseInfo const& _testInfo) override  {
+            currentTestCaseInfo = _testInfo;
+        }
+        void sectionStarting(SectionInfo const& _sectionInfo) override {
+            m_sectionStack.push_back(_sectionInfo);
+        }
+
+        void sectionEnded(SectionStats const& /* _sectionStats */) override {
+            m_sectionStack.pop_back();
+        }
+        void testCaseEnded(TestCaseStats const& /* _testCaseStats */) override {
+            currentTestCaseInfo.reset();
+        }
+        void testGroupEnded(TestGroupStats const& /* _testGroupStats */) override {
+            currentGroupInfo.reset();
+        }
+        void testRunEnded(TestRunStats const& /* _testRunStats */) override {
+            currentTestCaseInfo.reset();
+            currentGroupInfo.reset();
+            currentTestRunInfo.reset();
+        }
+
+        void skipTest(TestCaseInfo const&) override {
+            // Don't do anything with this by default.
+            // It can optionally be overridden in the derived class.
+        }
+
+        IConfigPtr m_config;
+        std::ostream& stream;
+
+        LazyStat<TestRunInfo> currentTestRunInfo;
+        LazyStat<GroupInfo> currentGroupInfo;
+        LazyStat<TestCaseInfo> currentTestCaseInfo;
+
+        std::vector<SectionInfo> m_sectionStack;
+        ReporterPreferences m_reporterPrefs;
+    };
+
+    template<typename DerivedT>
+    struct CumulativeReporterBase : IStreamingReporter {
+        template<typename T, typename ChildNodeT>
+        struct Node {
+            explicit Node( T const& _value ) : value( _value ) {}
+            virtual ~Node() {}
+
+            using ChildNodes = std::vector<std::shared_ptr<ChildNodeT>>;
+            T value;
+            ChildNodes children;
+        };
+        struct SectionNode {
+            explicit SectionNode(SectionStats const& _stats) : stats(_stats) {}
+            virtual ~SectionNode() = default;
+
+            bool operator == (SectionNode const& other) const {
+                return stats.sectionInfo.lineInfo == other.stats.sectionInfo.lineInfo;
+            }
+            bool operator == (std::shared_ptr<SectionNode> const& other) const {
+                return operator==(*other);
+            }
+
+            SectionStats stats;
+            using ChildSections = std::vector<std::shared_ptr<SectionNode>>;
+            using Assertions = std::vector<AssertionStats>;
+            ChildSections childSections;
+            Assertions assertions;
+            std::string stdOut;
+            std::string stdErr;
+        };
+
+        struct BySectionInfo {
+            BySectionInfo( SectionInfo const& other ) : m_other( other ) {}
+            BySectionInfo( BySectionInfo const& other ) : m_other( other.m_other ) {}
+            bool operator() (std::shared_ptr<SectionNode> const& node) const {
+                return ((node->stats.sectionInfo.name == m_other.name) &&
+                        (node->stats.sectionInfo.lineInfo == m_other.lineInfo));
+            }
+            void operator=(BySectionInfo const&) = delete;
+
+        private:
+            SectionInfo const& m_other;
+        };
+
+        using TestCaseNode = Node<TestCaseStats, SectionNode>;
+        using TestGroupNode = Node<TestGroupStats, TestCaseNode>;
+        using TestRunNode = Node<TestRunStats, TestGroupNode>;
+
+        CumulativeReporterBase( ReporterConfig const& _config )
+        :   m_config( _config.fullConfig() ),
+            stream( _config.stream() )
+        {
+            m_reporterPrefs.shouldRedirectStdOut = false;
+            if( !DerivedT::getSupportedVerbosities().count( m_config->verbosity() ) )
+                CATCH_ERROR( "Verbosity level not supported by this reporter" );
+        }
+        ~CumulativeReporterBase() override = default;
+
+        ReporterPreferences getPreferences() const override {
+            return m_reporterPrefs;
+        }
+
+        static std::set<Verbosity> getSupportedVerbosities() {
+            return { Verbosity::Normal };
+        }
+
+        void testRunStarting( TestRunInfo const& ) override {}
+        void testGroupStarting( GroupInfo const& ) override {}
+
+        void testCaseStarting( TestCaseInfo const& ) override {}
+
+        void sectionStarting( SectionInfo const& sectionInfo ) override {
+            SectionStats incompleteStats( sectionInfo, Counts(), 0, false );
+            std::shared_ptr<SectionNode> node;
+            if( m_sectionStack.empty() ) {
+                if( !m_rootSection )
+                    m_rootSection = std::make_shared<SectionNode>( incompleteStats );
+                node = m_rootSection;
+            }
+            else {
+                SectionNode& parentNode = *m_sectionStack.back();
+                auto it =
+                    std::find_if(   parentNode.childSections.begin(),
+                                    parentNode.childSections.end(),
+                                    BySectionInfo( sectionInfo ) );
+                if( it == parentNode.childSections.end() ) {
+                    node = std::make_shared<SectionNode>( incompleteStats );
+                    parentNode.childSections.push_back( node );
+                }
+                else
+                    node = *it;
+            }
+            m_sectionStack.push_back( node );
+            m_deepestSection = std::move(node);
+        }
+
+        void assertionStarting(AssertionInfo const&) override {}
+
+        bool assertionEnded(AssertionStats const& assertionStats) override {
+            assert(!m_sectionStack.empty());
+            // AssertionResult holds a pointer to a temporary DecomposedExpression,
+            // which getExpandedExpression() calls to build the expression string.
+            // Our section stack copy of the assertionResult will likely outlive the
+            // temporary, so it must be expanded or discarded now to avoid calling
+            // a destroyed object later.
+            prepareExpandedExpression(const_cast<AssertionResult&>( assertionStats.assertionResult ) );
+            SectionNode& sectionNode = *m_sectionStack.back();
+            sectionNode.assertions.push_back(assertionStats);
+            return true;
+        }
+        void sectionEnded(SectionStats const& sectionStats) override {
+            assert(!m_sectionStack.empty());
+            SectionNode& node = *m_sectionStack.back();
+            node.stats = sectionStats;
+            m_sectionStack.pop_back();
+        }
+        void testCaseEnded(TestCaseStats const& testCaseStats) override {
+            auto node = std::make_shared<TestCaseNode>(testCaseStats);
+            assert(m_sectionStack.size() == 0);
+            node->children.push_back(m_rootSection);
+            m_testCases.push_back(node);
+            m_rootSection.reset();
+
+            assert(m_deepestSection);
+            m_deepestSection->stdOut = testCaseStats.stdOut;
+            m_deepestSection->stdErr = testCaseStats.stdErr;
+        }
+        void testGroupEnded(TestGroupStats const& testGroupStats) override {
+            auto node = std::make_shared<TestGroupNode>(testGroupStats);
+            node->children.swap(m_testCases);
+            m_testGroups.push_back(node);
+        }
+        void testRunEnded(TestRunStats const& testRunStats) override {
+            auto node = std::make_shared<TestRunNode>(testRunStats);
+            node->children.swap(m_testGroups);
+            m_testRuns.push_back(node);
+            testRunEndedCumulative();
+        }
+        virtual void testRunEndedCumulative() = 0;
+
+        void skipTest(TestCaseInfo const&) override {}
+
+        IConfigPtr m_config;
+        std::ostream& stream;
+        std::vector<AssertionStats> m_assertions;
+        std::vector<std::vector<std::shared_ptr<SectionNode>>> m_sections;
+        std::vector<std::shared_ptr<TestCaseNode>> m_testCases;
+        std::vector<std::shared_ptr<TestGroupNode>> m_testGroups;
+
+        std::vector<std::shared_ptr<TestRunNode>> m_testRuns;
+
+        std::shared_ptr<SectionNode> m_rootSection;
+        std::shared_ptr<SectionNode> m_deepestSection;
+        std::vector<std::shared_ptr<SectionNode>> m_sectionStack;
+        ReporterPreferences m_reporterPrefs;
+    };
+
+    template<char C>
+    char const* getLineOfChars() {
+        static char line[CATCH_CONFIG_CONSOLE_WIDTH] = {0};
+        if( !*line ) {
+            std::memset( line, C, CATCH_CONFIG_CONSOLE_WIDTH-1 );
+            line[CATCH_CONFIG_CONSOLE_WIDTH-1] = 0;
+        }
+        return line;
+    }
+
+    struct TestEventListenerBase : StreamingReporterBase<TestEventListenerBase> {
+        TestEventListenerBase( ReporterConfig const& _config );
+
+        static std::set<Verbosity> getSupportedVerbosities();
+
+        void assertionStarting(AssertionInfo const&) override;
+        bool assertionEnded(AssertionStats const&) override;
+    };
+
+} // end namespace Catch
+
+// end catch_reporter_bases.hpp
+// start catch_console_colour.h
+
+namespace Catch {
+
+    struct Colour {
+        enum Code {
+            None = 0,
+
+            White,
+            Red,
+            Green,
+            Blue,
+            Cyan,
+            Yellow,
+            Grey,
+
+            Bright = 0x10,
+
+            BrightRed = Bright | Red,
+            BrightGreen = Bright | Green,
+            LightGrey = Bright | Grey,
+            BrightWhite = Bright | White,
+            BrightYellow = Bright | Yellow,
+
+            // By intention
+            FileName = LightGrey,
+            Warning = BrightYellow,
+            ResultError = BrightRed,
+            ResultSuccess = BrightGreen,
+            ResultExpectedFailure = Warning,
+
+            Error = BrightRed,
+            Success = Green,
+
+            OriginalExpression = Cyan,
+            ReconstructedExpression = BrightYellow,
+
+            SecondaryText = LightGrey,
+            Headers = White
+        };
+
+        // Use constructed object for RAII guard
+        Colour( Code _colourCode );
+        Colour( Colour&& other ) noexcept;
+        Colour& operator=( Colour&& other ) noexcept;
+        ~Colour();
+
+        // Use static method for one-shot changes
+        static void use( Code _colourCode );
+
+    private:
+        bool m_moved = false;
+    };
+
+    std::ostream& operator << ( std::ostream& os, Colour const& );
+
+} // end namespace Catch
+
+// end catch_console_colour.h
+// start catch_reporter_registrars.hpp
+
+
+namespace Catch {
+
+    template<typename T>
+    class ReporterRegistrar {
+
+        class ReporterFactory : public IReporterFactory {
+
+            virtual IStreamingReporterPtr create( ReporterConfig const& config ) const override {
+                return std::unique_ptr<T>( new T( config ) );
+            }
+
+            virtual std::string getDescription() const override {
+                return T::getDescription();
+            }
+        };
+
+    public:
+
+        explicit ReporterRegistrar( std::string const& name ) {
+            getMutableRegistryHub().registerReporter( name, std::make_shared<ReporterFactory>() );
+        }
+    };
+
+    template<typename T>
+    class ListenerRegistrar {
+
+        class ListenerFactory : public IReporterFactory {
+
+            virtual IStreamingReporterPtr create( ReporterConfig const& config ) const override {
+                return std::unique_ptr<T>( new T( config ) );
+            }
+            virtual std::string getDescription() const override {
+                return std::string();
+            }
+        };
+
+    public:
+
+        ListenerRegistrar() {
+            getMutableRegistryHub().registerListener( std::make_shared<ListenerFactory>() );
+        }
+    };
+}
+
+#if !defined(CATCH_CONFIG_DISABLE)
+
+#define CATCH_REGISTER_REPORTER( name, reporterType ) \
+    CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS          \
+    namespace{ Catch::ReporterRegistrar<reporterType> catch_internal_RegistrarFor##reporterType( name ); } \
+    CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
+
+#define CATCH_REGISTER_LISTENER( listenerType ) \
+     CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS   \
+     namespace{ Catch::ListenerRegistrar<listenerType> catch_internal_RegistrarFor##listenerType; } \
+     CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS
+#else // CATCH_CONFIG_DISABLE
+
+#define CATCH_REGISTER_REPORTER(name, reporterType)
+#define CATCH_REGISTER_LISTENER(listenerType)
+
+#endif // CATCH_CONFIG_DISABLE
+
+// end catch_reporter_registrars.hpp
+// Allow users to base their work off existing reporters
+// start catch_reporter_compact.h
+
+namespace Catch {
+
+    struct CompactReporter : StreamingReporterBase<CompactReporter> {
+
+        using StreamingReporterBase::StreamingReporterBase;
+
+        ~CompactReporter() override;
+
+        static std::string getDescription();
+
+        ReporterPreferences getPreferences() const override;
+
+        void noMatchingTestCases(std::string const& spec) override;
+
+        void assertionStarting(AssertionInfo const&) override;
+
+        bool assertionEnded(AssertionStats const& _assertionStats) override;
+
+        void sectionEnded(SectionStats const& _sectionStats) override;
+
+        void testRunEnded(TestRunStats const& _testRunStats) override;
+
+    };
+
+} // end namespace Catch
+
+// end catch_reporter_compact.h
+// start catch_reporter_console.h
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4061) // Not all labels are EXPLICITLY handled in switch
+                              // Note that 4062 (not all labels are handled
+                              // and default is missing) is enabled
+#endif
+
+namespace Catch {
+    // Fwd decls
+    struct SummaryColumn;
+    class TablePrinter;
+
+    struct ConsoleReporter : StreamingReporterBase<ConsoleReporter> {
+        std::unique_ptr<TablePrinter> m_tablePrinter;
+
+        ConsoleReporter(ReporterConfig const& config);
+        ~ConsoleReporter() override;
+        static std::string getDescription();
+
+        void noMatchingTestCases(std::string const& spec) override;
+
+        void assertionStarting(AssertionInfo const&) override;
+
+        bool assertionEnded(AssertionStats const& _assertionStats) override;
+
+        void sectionStarting(SectionInfo const& _sectionInfo) override;
+        void sectionEnded(SectionStats const& _sectionStats) override;
+
+        void benchmarkStarting(BenchmarkInfo const& info) override;
+        void benchmarkEnded(BenchmarkStats const& stats) override;
+
+        void testCaseEnded(TestCaseStats const& _testCaseStats) override;
+        void testGroupEnded(TestGroupStats const& _testGroupStats) override;
+        void testRunEnded(TestRunStats const& _testRunStats) override;
+
+    private:
+
+        void lazyPrint();
+
+        void lazyPrintWithoutClosingBenchmarkTable();
+        void lazyPrintRunInfo();
+        void lazyPrintGroupInfo();
+        void printTestCaseAndSectionHeader();
+
+        void printClosedHeader(std::string const& _name);
+        void printOpenHeader(std::string const& _name);
+
+        // if string has a : in first line will set indent to follow it on
+        // subsequent lines
+        void printHeaderString(std::string const& _string, std::size_t indent = 0);
+
+        void printTotals(Totals const& totals);
+        void printSummaryRow(std::string const& label, std::vector<SummaryColumn> const& cols, std::size_t row);
+
+        void printTotalsDivider(Totals const& totals);
+        void printSummaryDivider();
+
+    private:
+        bool m_headerPrinted = false;
+    };
+
+} // end namespace Catch
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+// end catch_reporter_console.h
+// start catch_reporter_junit.h
+
+// start catch_xmlwriter.h
+
+#include <vector>
+
+namespace Catch {
+
+    class XmlEncode {
+    public:
+        enum ForWhat { ForTextNodes, ForAttributes };
+
+        XmlEncode( std::string const& str, ForWhat forWhat = ForTextNodes );
+
+        void encodeTo( std::ostream& os ) const;
+
+        friend std::ostream& operator << ( std::ostream& os, XmlEncode const& xmlEncode );
+
+    private:
+        std::string m_str;
+        ForWhat m_forWhat;
+    };
+
+    class XmlWriter {
+    public:
+
+        class ScopedElement {
+        public:
+            ScopedElement( XmlWriter* writer );
+
+            ScopedElement( ScopedElement&& other ) noexcept;
+            ScopedElement& operator=( ScopedElement&& other ) noexcept;
+
+            ~ScopedElement();
+
+            ScopedElement& writeText( std::string const& text, bool indent = true );
+
+            template<typename T>
+            ScopedElement& writeAttribute( std::string const& name, T const& attribute ) {
+                m_writer->writeAttribute( name, attribute );
+                return *this;
+            }
+
+        private:
+            mutable XmlWriter* m_writer = nullptr;
+        };
+
+        XmlWriter( std::ostream& os = Catch::cout() );
+        ~XmlWriter();
+
+        XmlWriter( XmlWriter const& ) = delete;
+        XmlWriter& operator=( XmlWriter const& ) = delete;
+
+        XmlWriter& startElement( std::string const& name );
+
+        ScopedElement scopedElement( std::string const& name );
+
+        XmlWriter& endElement();
+
+        XmlWriter& writeAttribute( std::string const& name, std::string const& attribute );
+
+        XmlWriter& writeAttribute( std::string const& name, bool attribute );
+
+        template<typename T>
+        XmlWriter& writeAttribute( std::string const& name, T const& attribute ) {
+            ReusableStringStream rss;
+            rss << attribute;
+            return writeAttribute( name, rss.str() );
+        }
+
+        XmlWriter& writeText( std::string const& text, bool indent = true );
+
+        XmlWriter& writeComment( std::string const& text );
+
+        void writeStylesheetRef( std::string const& url );
+
+        XmlWriter& writeBlankLine();
+
+        void ensureTagClosed();
+
+    private:
+
+        void writeDeclaration();
+
+        void newlineIfNecessary();
+
+        bool m_tagIsOpen = false;
+        bool m_needsNewline = false;
+        std::vector<std::string> m_tags;
+        std::string m_indent;
+        std::ostream& m_os;
+    };
+
+}
+
+// end catch_xmlwriter.h
+namespace Catch {
+
+    class JunitReporter : public CumulativeReporterBase<JunitReporter> {
+    public:
+        JunitReporter(ReporterConfig const& _config);
+
+        ~JunitReporter() override;
+
+        static std::string getDescription();
+
+        void noMatchingTestCases(std::string const& /*spec*/) override;
+
+        void testRunStarting(TestRunInfo const& runInfo) override;
+
+        void testGroupStarting(GroupInfo const& groupInfo) override;
+
+        void testCaseStarting(TestCaseInfo const& testCaseInfo) override;
+        bool assertionEnded(AssertionStats const& assertionStats) override;
+
+        void testCaseEnded(TestCaseStats const& testCaseStats) override;
+
+        void testGroupEnded(TestGroupStats const& testGroupStats) override;
+
+        void testRunEndedCumulative() override;
+
+        void writeGroup(TestGroupNode const& groupNode, double suiteTime);
+
+        void writeTestCase(TestCaseNode const& testCaseNode);
+
+        void writeSection(std::string const& className,
+                          std::string const& rootName,
+                          SectionNode const& sectionNode);
+
+        void writeAssertions(SectionNode const& sectionNode);
+        void writeAssertion(AssertionStats const& stats);
+
+        XmlWriter xml;
+        Timer suiteTimer;
+        std::string stdOutForSuite;
+        std::string stdErrForSuite;
+        unsigned int unexpectedExceptions = 0;
+        bool m_okToFail = false;
+    };
+
+} // end namespace Catch
+
+// end catch_reporter_junit.h
+// start catch_reporter_xml.h
+
+namespace Catch {
+    class XmlReporter : public StreamingReporterBase<XmlReporter> {
+    public:
+        XmlReporter(ReporterConfig const& _config);
+
+        ~XmlReporter() override;
+
+        static std::string getDescription();
+
+        virtual std::string getStylesheetRef() const;
+
+        void writeSourceInfo(SourceLineInfo const& sourceInfo);
+
+    public: // StreamingReporterBase
+
+        void noMatchingTestCases(std::string const& s) override;
+
+        void testRunStarting(TestRunInfo const& testInfo) override;
+
+        void testGroupStarting(GroupInfo const& groupInfo) override;
+
+        void testCaseStarting(TestCaseInfo const& testInfo) override;
+
+        void sectionStarting(SectionInfo const& sectionInfo) override;
+
+        void assertionStarting(AssertionInfo const&) override;
+
+        bool assertionEnded(AssertionStats const& assertionStats) override;
+
+        void sectionEnded(SectionStats const& sectionStats) override;
+
+        void testCaseEnded(TestCaseStats const& testCaseStats) override;
+
+        void testGroupEnded(TestGroupStats const& testGroupStats) override;
+
+        void testRunEnded(TestRunStats const& testRunStats) override;
+
+    private:
+        Timer m_testCaseTimer;
+        XmlWriter m_xml;
+        int m_sectionDepth = 0;
+    };
+
+} // end namespace Catch
+
+// end catch_reporter_xml.h
+
+// end catch_external_interfaces.h
+#endif
+
+#endif // ! CATCH_CONFIG_IMPL_ONLY
+
+#ifdef CATCH_IMPL
+// start catch_impl.hpp
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wweak-vtables"
+#endif
+
+// Keep these here for external reporters
+// start catch_test_case_tracker.h
+
+#include <string>
+#include <vector>
+#include <memory>
+
+namespace Catch {
+namespace TestCaseTracking {
+
+    struct NameAndLocation {
+        std::string name;
+        SourceLineInfo location;
+
+        NameAndLocation( std::string const& _name, SourceLineInfo const& _location );
+    };
+
+    struct ITracker;
+
+    using ITrackerPtr = std::shared_ptr<ITracker>;
+
+    struct ITracker {
+        virtual ~ITracker();
+
+        // static queries
+        virtual NameAndLocation const& nameAndLocation() const = 0;
+
+        // dynamic queries
+        virtual bool isComplete() const = 0; // Successfully completed or failed
+        virtual bool isSuccessfullyCompleted() const = 0;
+        virtual bool isOpen() const = 0; // Started but not complete
+        virtual bool hasChildren() const = 0;
+
+        virtual ITracker& parent() = 0;
+
+        // actions
+        virtual void close() = 0; // Successfully complete
+        virtual void fail() = 0;
+        virtual void markAsNeedingAnotherRun() = 0;
+
+        virtual void addChild( ITrackerPtr const& child ) = 0;
+        virtual ITrackerPtr findChild( NameAndLocation const& nameAndLocation ) = 0;
+        virtual void openChild() = 0;
+
+        // Debug/ checking
+        virtual bool isSectionTracker() const = 0;
+        virtual bool isIndexTracker() const = 0;
+    };
+
+    class TrackerContext {
+
+        enum RunState {
+            NotStarted,
+            Executing,
+            CompletedCycle
+        };
+
+        ITrackerPtr m_rootTracker;
+        ITracker* m_currentTracker = nullptr;
+        RunState m_runState = NotStarted;
+
+    public:
+
+        static TrackerContext& instance();
+
+        ITracker& startRun();
+        void endRun();
+
+        void startCycle();
+        void completeCycle();
+
+        bool completedCycle() const;
+        ITracker& currentTracker();
+        void setCurrentTracker( ITracker* tracker );
+    };
+
+    class TrackerBase : public ITracker {
+    protected:
+        enum CycleState {
+            NotStarted,
+            Executing,
+            ExecutingChildren,
+            NeedsAnotherRun,
+            CompletedSuccessfully,
+            Failed
+        };
+
+        using Children = std::vector<ITrackerPtr>;
+        NameAndLocation m_nameAndLocation;
+        TrackerContext& m_ctx;
+        ITracker* m_parent;
+        Children m_children;
+        CycleState m_runState = NotStarted;
+
+    public:
+        TrackerBase( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent );
+
+        NameAndLocation const& nameAndLocation() const override;
+        bool isComplete() const override;
+        bool isSuccessfullyCompleted() const override;
+        bool isOpen() const override;
+        bool hasChildren() const override;
+
+        void addChild( ITrackerPtr const& child ) override;
+
+        ITrackerPtr findChild( NameAndLocation const& nameAndLocation ) override;
+        ITracker& parent() override;
+
+        void openChild() override;
+
+        bool isSectionTracker() const override;
+        bool isIndexTracker() const override;
+
+        void open();
+
+        void close() override;
+        void fail() override;
+        void markAsNeedingAnotherRun() override;
+
+    private:
+        void moveToParent();
+        void moveToThis();
+    };
+
+    class SectionTracker : public TrackerBase {
+        std::vector<std::string> m_filters;
+    public:
+        SectionTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent );
+
+        bool isSectionTracker() const override;
+
+        static SectionTracker& acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation );
+
+        void tryOpen();
+
+        void addInitialFilters( std::vector<std::string> const& filters );
+        void addNextFilters( std::vector<std::string> const& filters );
+    };
+
+    class IndexTracker : public TrackerBase {
+        int m_size;
+        int m_index = -1;
+    public:
+        IndexTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent, int size );
+
+        bool isIndexTracker() const override;
+        void close() override;
+
+        static IndexTracker& acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation, int size );
+
+        int index() const;
+
+        void moveNext();
+    };
+
+} // namespace TestCaseTracking
+
+using TestCaseTracking::ITracker;
+using TestCaseTracking::TrackerContext;
+using TestCaseTracking::SectionTracker;
+using TestCaseTracking::IndexTracker;
+
+} // namespace Catch
+
+// end catch_test_case_tracker.h
+
+// start catch_leak_detector.h
+
+namespace Catch {
+
+    struct LeakDetector {
+        LeakDetector();
+        ~LeakDetector();
+    };
+
+}
+// end catch_leak_detector.h
+// Cpp files will be included in the single-header file here
+// start catch_approx.cpp
+
+#include <cmath>
+#include <limits>
+
+namespace {
+
+// Performs equivalent check of std::fabs(lhs - rhs) <= margin
+// But without the subtraction to allow for INFINITY in comparison
+bool marginComparison(double lhs, double rhs, double margin) {
+    return (lhs + margin >= rhs) && (rhs + margin >= lhs);
+}
+
+}
+
+namespace Catch {
+namespace Detail {
+
+    Approx::Approx ( double value )
+    :   m_epsilon( std::numeric_limits<float>::epsilon()*100 ),
+        m_margin( 0.0 ),
+        m_scale( 0.0 ),
+        m_value( value )
+    {}
+
+    Approx Approx::custom() {
+        return Approx( 0 );
+    }
+
+    Approx Approx::operator-() const {
+        auto temp(*this);
+        temp.m_value = -temp.m_value;
+        return temp;
+    }
+
+    std::string Approx::toString() const {
+        ReusableStringStream rss;
+        rss << "Approx( " << ::Catch::Detail::stringify( m_value ) << " )";
+        return rss.str();
+    }
+
+    bool Approx::equalityComparisonImpl(const double other) const {
+        // First try with fixed margin, then compute margin based on epsilon, scale and Approx's value
+        // Thanks to Richard Harris for his help refining the scaled margin value
+        return marginComparison(m_value, other, m_margin) || marginComparison(m_value, other, m_epsilon * (m_scale + std::fabs(m_value)));
+    }
+
+    void Approx::setMargin(double margin) {
+        CATCH_ENFORCE(margin >= 0,
+            "Invalid Approx::margin: " << margin << '.'
+            << " Approx::Margin has to be non-negative.");
+        m_margin = margin;
+    }
+
+    void Approx::setEpsilon(double epsilon) {
+        CATCH_ENFORCE(epsilon >= 0 && epsilon <= 1.0,
+            "Invalid Approx::epsilon: " << epsilon << '.'
+            << " Approx::epsilon has to be in [0, 1]");
+        m_epsilon = epsilon;
+    }
+
+} // end namespace Detail
+
+namespace literals {
+    Detail::Approx operator "" _a(long double val) {
+        return Detail::Approx(val);
+    }
+    Detail::Approx operator "" _a(unsigned long long val) {
+        return Detail::Approx(val);
+    }
+} // end namespace literals
+
+std::string StringMaker<Catch::Detail::Approx>::convert(Catch::Detail::Approx const& value) {
+    return value.toString();
+}
+
+} // end namespace Catch
+// end catch_approx.cpp
+// start catch_assertionhandler.cpp
+
+// start catch_context.h
+
+#include <memory>
+
+namespace Catch {
+
+    struct IResultCapture;
+    struct IRunner;
+    struct IConfig;
+    struct IMutableContext;
+
+    using IConfigPtr = std::shared_ptr<IConfig const>;
+
+    struct IContext
+    {
+        virtual ~IContext();
+
+        virtual IResultCapture* getResultCapture() = 0;
+        virtual IRunner* getRunner() = 0;
+        virtual IConfigPtr const& getConfig() const = 0;
+    };
+
+    struct IMutableContext : IContext
+    {
+        virtual ~IMutableContext();
+        virtual void setResultCapture( IResultCapture* resultCapture ) = 0;
+        virtual void setRunner( IRunner* runner ) = 0;
+        virtual void setConfig( IConfigPtr const& config ) = 0;
+
+    private:
+        static IMutableContext *currentContext;
+        friend IMutableContext& getCurrentMutableContext();
+        friend void cleanUpContext();
+        static void createContext();
+    };
+
+    inline IMutableContext& getCurrentMutableContext()
+    {
+        if( !IMutableContext::currentContext )
+            IMutableContext::createContext();
+        return *IMutableContext::currentContext;
+    }
+
+    inline IContext& getCurrentContext()
+    {
+        return getCurrentMutableContext();
+    }
+
+    void cleanUpContext();
+}
+
+// end catch_context.h
+// start catch_debugger.h
+
+namespace Catch {
+    bool isDebuggerActive();
+}
+
+#ifdef CATCH_PLATFORM_MAC
+
+    #define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
+
+#elif defined(CATCH_PLATFORM_LINUX)
+    // If we can use inline assembler, do it because this allows us to break
+    // directly at the location of the failing check instead of breaking inside
+    // raise() called from it, i.e. one stack frame below.
+    #if defined(__GNUC__) && (defined(__i386) || defined(__x86_64))
+        #define CATCH_TRAP() asm volatile ("int $3") /* NOLINT */
+    #else // Fall back to the generic way.
+        #include <signal.h>
+
+        #define CATCH_TRAP() raise(SIGTRAP)
+    #endif
+#elif defined(_MSC_VER)
+    #define CATCH_TRAP() __debugbreak()
+#elif defined(__MINGW32__)
+    extern "C" __declspec(dllimport) void __stdcall DebugBreak();
+    #define CATCH_TRAP() DebugBreak()
+#endif
+
+#ifdef CATCH_TRAP
+    #define CATCH_BREAK_INTO_DEBUGGER() if( Catch::isDebuggerActive() ) { CATCH_TRAP(); }
+#else
+    namespace Catch {
+        inline void doNothing() {}
+    }
+    #define CATCH_BREAK_INTO_DEBUGGER() Catch::doNothing()
+#endif
+
+// end catch_debugger.h
+// start catch_run_context.h
+
+// start catch_fatal_condition.h
+
+// start catch_windows_h_proxy.h
+
+
+#if defined(CATCH_PLATFORM_WINDOWS)
+
+#if !defined(NOMINMAX) && !defined(CATCH_CONFIG_NO_NOMINMAX)
+#  define CATCH_DEFINED_NOMINMAX
+#  define NOMINMAX
+#endif
+#if !defined(WIN32_LEAN_AND_MEAN) && !defined(CATCH_CONFIG_NO_WIN32_LEAN_AND_MEAN)
+#  define CATCH_DEFINED_WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+#endif
+
+#ifdef __AFXDLL
+#include <AfxWin.h>
+#else
+#include <windows.h>
+#endif
+
+#ifdef CATCH_DEFINED_NOMINMAX
+#  undef NOMINMAX
+#endif
+#ifdef CATCH_DEFINED_WIN32_LEAN_AND_MEAN
+#  undef WIN32_LEAN_AND_MEAN
+#endif
+
+#endif // defined(CATCH_PLATFORM_WINDOWS)
+
+// end catch_windows_h_proxy.h
+#if defined( CATCH_CONFIG_WINDOWS_SEH )
+
+namespace Catch {
+
+    struct FatalConditionHandler {
+
+        static LONG CALLBACK handleVectoredException(PEXCEPTION_POINTERS ExceptionInfo);
+        FatalConditionHandler();
+        static void reset();
+        ~FatalConditionHandler();
+
+    private:
+        static bool isSet;
+        static ULONG guaranteeSize;
+        static PVOID exceptionHandlerHandle;
+    };
+
+} // namespace Catch
+
+#elif defined ( CATCH_CONFIG_POSIX_SIGNALS )
+
+#include <signal.h>
+
+namespace Catch {
+
+    struct FatalConditionHandler {
+
+        static bool isSet;
+        static struct sigaction oldSigActions[];
+        static stack_t oldSigStack;
+        static char altStackMem[];
+
+        static void handleSignal( int sig );
+
+        FatalConditionHandler();
+        ~FatalConditionHandler();
+        static void reset();
+    };
+
+} // namespace Catch
+
+#else
+
+namespace Catch {
+    struct FatalConditionHandler {
+        void reset();
+    };
+}
+
+#endif
+
+// end catch_fatal_condition.h
+#include <string>
+
+namespace Catch {
+
+    struct IMutableContext;
+
+    ///////////////////////////////////////////////////////////////////////////
+
+    class RunContext : public IResultCapture, public IRunner {
+
+    public:
+        RunContext( RunContext const& ) = delete;
+        RunContext& operator =( RunContext const& ) = delete;
+
+        explicit RunContext( IConfigPtr const& _config, IStreamingReporterPtr&& reporter );
+
+        ~RunContext() override;
+
+        void testGroupStarting( std::string const& testSpec, std::size_t groupIndex, std::size_t groupsCount );
+        void testGroupEnded( std::string const& testSpec, Totals const& totals, std::size_t groupIndex, std::size_t groupsCount );
+
+        Totals runTest(TestCase const& testCase);
+
+        IConfigPtr config() const;
+        IStreamingReporter& reporter() const;
+
+    public: // IResultCapture
+
+        // Assertion handlers
+        void handleExpr
+                (   AssertionInfo const& info,
+                    ITransientExpression const& expr,
+                    AssertionReaction& reaction ) override;
+        void handleMessage
+                (   AssertionInfo const& info,
+                    ResultWas::OfType resultType,
+                    StringRef const& message,
+                    AssertionReaction& reaction ) override;
+        void handleUnexpectedExceptionNotThrown
+                (   AssertionInfo const& info,
+                    AssertionReaction& reaction ) override;
+        void handleUnexpectedInflightException
+                (   AssertionInfo const& info,
+                    std::string const& message,
+                    AssertionReaction& reaction ) override;
+        void handleIncomplete
+                (   AssertionInfo const& info ) override;
+        void handleNonExpr
+                (   AssertionInfo const &info,
+                    ResultWas::OfType resultType,
+                    AssertionReaction &reaction ) override;
+
+        bool sectionStarted( SectionInfo const& sectionInfo, Counts& assertions ) override;
+
+        void sectionEnded( SectionEndInfo const& endInfo ) override;
+        void sectionEndedEarly( SectionEndInfo const& endInfo ) override;
+
+        auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker& override;
+
+        void benchmarkStarting( BenchmarkInfo const& info ) override;
+        void benchmarkEnded( BenchmarkStats const& stats ) override;
+
+        void pushScopedMessage( MessageInfo const& message ) override;
+        void popScopedMessage( MessageInfo const& message ) override;
+
+        std::string getCurrentTestName() const override;
+
+        const AssertionResult* getLastResult() const override;
+
+        void exceptionEarlyReported() override;
+
+        void handleFatalErrorCondition( StringRef message ) override;
+
+        bool lastAssertionPassed() override;
+
+        void assertionPassed() override;
+
+    public:
+        // !TBD We need to do this another way!
+        bool aborting() const final;
+
+    private:
+
+        void runCurrentTest( std::string& redirectedCout, std::string& redirectedCerr );
+        void invokeActiveTestCase();
+
+        void resetAssertionInfo();
+        bool testForMissingAssertions( Counts& assertions );
+
+        void assertionEnded( AssertionResult const& result );
+        void reportExpr
+                (   AssertionInfo const &info,
+                    ResultWas::OfType resultType,
+                    ITransientExpression const *expr,
+                    bool negated );
+
+        void populateReaction( AssertionReaction& reaction );
+
+    private:
+
+        void handleUnfinishedSections();
+
+        TestRunInfo m_runInfo;
+        IMutableContext& m_context;
+        TestCase const* m_activeTestCase = nullptr;
+        ITracker* m_testCaseTracker;
+        Option<AssertionResult> m_lastResult;
+
+        IConfigPtr m_config;
+        Totals m_totals;
+        IStreamingReporterPtr m_reporter;
+        std::vector<MessageInfo> m_messages;
+        AssertionInfo m_lastAssertionInfo;
+        std::vector<SectionEndInfo> m_unfinishedSections;
+        std::vector<ITracker*> m_activeSections;
+        TrackerContext m_trackerContext;
+        bool m_lastAssertionPassed = false;
+        bool m_shouldReportUnexpected = true;
+        bool m_includeSuccessfulResults;
+    };
+
+} // end namespace Catch
+
+// end catch_run_context.h
+namespace Catch {
+
+    namespace {
+        auto operator <<( std::ostream& os, ITransientExpression const& expr ) -> std::ostream& {
+            expr.streamReconstructedExpression( os );
+            return os;
+        }
+    }
+
+    LazyExpression::LazyExpression( bool isNegated )
+    :   m_isNegated( isNegated )
+    {}
+
+    LazyExpression::LazyExpression( LazyExpression const& other ) : m_isNegated( other.m_isNegated ) {}
+
+    LazyExpression::operator bool() const {
+        return m_transientExpression != nullptr;
+    }
+
+    auto operator << ( std::ostream& os, LazyExpression const& lazyExpr ) -> std::ostream& {
+        if( lazyExpr.m_isNegated )
+            os << "!";
+
+        if( lazyExpr ) {
+            if( lazyExpr.m_isNegated && lazyExpr.m_transientExpression->isBinaryExpression() )
+                os << "(" << *lazyExpr.m_transientExpression << ")";
+            else
+                os << *lazyExpr.m_transientExpression;
+        }
+        else {
+            os << "{** error - unchecked empty expression requested **}";
+        }
+        return os;
+    }
+
+    AssertionHandler::AssertionHandler
+        (   StringRef const& macroName,
+            SourceLineInfo const& lineInfo,
+            StringRef capturedExpression,
+            ResultDisposition::Flags resultDisposition )
+    :   m_assertionInfo{ macroName, lineInfo, capturedExpression, resultDisposition },
+        m_resultCapture( getResultCapture() )
+    {}
+
+    void AssertionHandler::handleExpr( ITransientExpression const& expr ) {
+        m_resultCapture.handleExpr( m_assertionInfo, expr, m_reaction );
+    }
+    void AssertionHandler::handleMessage(ResultWas::OfType resultType, StringRef const& message) {
+        m_resultCapture.handleMessage( m_assertionInfo, resultType, message, m_reaction );
+    }
+
+    auto AssertionHandler::allowThrows() const -> bool {
+        return getCurrentContext().getConfig()->allowThrows();
+    }
+
+    void AssertionHandler::complete() {
+        setCompleted();
+        if( m_reaction.shouldDebugBreak ) {
+
+            // If you find your debugger stopping you here then go one level up on the
+            // call-stack for the code that caused it (typically a failed assertion)
+
+            // (To go back to the test and change execution, jump over the throw, next)
+            CATCH_BREAK_INTO_DEBUGGER();
+        }
+        if (m_reaction.shouldThrow) {
+#if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+            throw Catch::TestFailureException();
+#else
+            CATCH_ERROR( "Test failure requires aborting test!" );
+#endif
+        }
+    }
+    void AssertionHandler::setCompleted() {
+        m_completed = true;
+    }
+
+    void AssertionHandler::handleUnexpectedInflightException() {
+        m_resultCapture.handleUnexpectedInflightException( m_assertionInfo, Catch::translateActiveException(), m_reaction );
+    }
+
+    void AssertionHandler::handleExceptionThrownAsExpected() {
+        m_resultCapture.handleNonExpr(m_assertionInfo, ResultWas::Ok, m_reaction);
+    }
+    void AssertionHandler::handleExceptionNotThrownAsExpected() {
+        m_resultCapture.handleNonExpr(m_assertionInfo, ResultWas::Ok, m_reaction);
+    }
+
+    void AssertionHandler::handleUnexpectedExceptionNotThrown() {
+        m_resultCapture.handleUnexpectedExceptionNotThrown( m_assertionInfo, m_reaction );
+    }
+
+    void AssertionHandler::handleThrowingCallSkipped() {
+        m_resultCapture.handleNonExpr(m_assertionInfo, ResultWas::Ok, m_reaction);
+    }
+
+    // This is the overload that takes a string and infers the Equals matcher from it
+    // The more general overload, that takes any string matcher, is in catch_capture_matchers.cpp
+    void handleExceptionMatchExpr( AssertionHandler& handler, std::string const& str, StringRef const& matcherString  ) {
+        handleExceptionMatchExpr( handler, Matchers::Equals( str ), matcherString );
+    }
+
+} // namespace Catch
+// end catch_assertionhandler.cpp
+// start catch_assertionresult.cpp
+
+namespace Catch {
+    AssertionResultData::AssertionResultData(ResultWas::OfType _resultType, LazyExpression const & _lazyExpression):
+        lazyExpression(_lazyExpression),
+        resultType(_resultType) {}
+
+    std::string AssertionResultData::reconstructExpression() const {
+
+        if( reconstructedExpression.empty() ) {
+            if( lazyExpression ) {
+                ReusableStringStream rss;
+                rss << lazyExpression;
+                reconstructedExpression = rss.str();
+            }
+        }
+        return reconstructedExpression;
+    }
+
+    AssertionResult::AssertionResult( AssertionInfo const& info, AssertionResultData const& data )
+    :   m_info( info ),
+        m_resultData( data )
+    {}
+
+    // Result was a success
+    bool AssertionResult::succeeded() const {
+        return Catch::isOk( m_resultData.resultType );
+    }
+
+    // Result was a success, or failure is suppressed
+    bool AssertionResult::isOk() const {
+        return Catch::isOk( m_resultData.resultType ) || shouldSuppressFailure( m_info.resultDisposition );
+    }
+
+    ResultWas::OfType AssertionResult::getResultType() const {
+        return m_resultData.resultType;
+    }
+
+    bool AssertionResult::hasExpression() const {
+        return m_info.capturedExpression[0] != 0;
+    }
+
+    bool AssertionResult::hasMessage() const {
+        return !m_resultData.message.empty();
+    }
+
+    std::string AssertionResult::getExpression() const {
+        if( isFalseTest( m_info.resultDisposition ) )
+            return "!(" + m_info.capturedExpression + ")";
+        else
+            return m_info.capturedExpression;
+    }
+
+    std::string AssertionResult::getExpressionInMacro() const {
+        std::string expr;
+        if( m_info.macroName[0] == 0 )
+            expr = m_info.capturedExpression;
+        else {
+            expr.reserve( m_info.macroName.size() + m_info.capturedExpression.size() + 4 );
+            expr += m_info.macroName;
+            expr += "( ";
+            expr += m_info.capturedExpression;
+            expr += " )";
+        }
+        return expr;
+    }
+
+    bool AssertionResult::hasExpandedExpression() const {
+        return hasExpression() && getExpandedExpression() != getExpression();
+    }
+
+    std::string AssertionResult::getExpandedExpression() const {
+        std::string expr = m_resultData.reconstructExpression();
+        return expr.empty()
+                ? getExpression()
+                : expr;
+    }
+
+    std::string AssertionResult::getMessage() const {
+        return m_resultData.message;
+    }
+    SourceLineInfo AssertionResult::getSourceInfo() const {
+        return m_info.lineInfo;
+    }
+
+    StringRef AssertionResult::getTestMacroName() const {
+        return m_info.macroName;
+    }
+
+} // end namespace Catch
+// end catch_assertionresult.cpp
+// start catch_benchmark.cpp
+
+namespace Catch {
+
+    auto BenchmarkLooper::getResolution() -> uint64_t {
+        return getEstimatedClockResolution() * getCurrentContext().getConfig()->benchmarkResolutionMultiple();
+    }
+
+    void BenchmarkLooper::reportStart() {
+        getResultCapture().benchmarkStarting( { m_name } );
+    }
+    auto BenchmarkLooper::needsMoreIterations() -> bool {
+        auto elapsed = m_timer.getElapsedNanoseconds();
+
+        // Exponentially increasing iterations until we're confident in our timer resolution
+        if( elapsed < m_resolution ) {
+            m_iterationsToRun *= 10;
+            return true;
+        }
+
+        getResultCapture().benchmarkEnded( { { m_name }, m_count, elapsed } );
+        return false;
+    }
+
+} // end namespace Catch
+// end catch_benchmark.cpp
+// start catch_capture_matchers.cpp
+
+namespace Catch {
+
+    using StringMatcher = Matchers::Impl::MatcherBase<std::string>;
+
+    // This is the general overload that takes a any string matcher
+    // There is another overload, in catch_assertionhandler.h/.cpp, that only takes a string and infers
+    // the Equals matcher (so the header does not mention matchers)
+    void handleExceptionMatchExpr( AssertionHandler& handler, StringMatcher const& matcher, StringRef const& matcherString  ) {
+        std::string exceptionMessage = Catch::translateActiveException();
+        MatchExpr<std::string, StringMatcher const&> expr( exceptionMessage, matcher, matcherString );
+        handler.handleExpr( expr );
+    }
+
+} // namespace Catch
+// end catch_capture_matchers.cpp
+// start catch_commandline.cpp
+
+// start catch_commandline.h
+
+// start catch_clara.h
+
+// Use Catch's value for console width (store Clara's off to the side, if present)
+#ifdef CLARA_CONFIG_CONSOLE_WIDTH
+#define CATCH_TEMP_CLARA_CONFIG_CONSOLE_WIDTH CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH
+#undef CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH
+#endif
+#define CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH CATCH_CONFIG_CONSOLE_WIDTH-1
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wweak-vtables"
+#pragma clang diagnostic ignored "-Wexit-time-destructors"
+#pragma clang diagnostic ignored "-Wshadow"
+#endif
+
+// start clara.hpp
+// Copyright 2017 Two Blue Cubes Ltd. All rights reserved.
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See https://github.com/philsquared/Clara for more details
+
+// Clara v1.1.5
+
+
+#ifndef CATCH_CLARA_CONFIG_CONSOLE_WIDTH
+#define CATCH_CLARA_CONFIG_CONSOLE_WIDTH 80
+#endif
+
+#ifndef CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH
+#define CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH CATCH_CLARA_CONFIG_CONSOLE_WIDTH
+#endif
+
+#ifndef CLARA_CONFIG_OPTIONAL_TYPE
+#ifdef __has_include
+#if __has_include(<optional>) && __cplusplus >= 201703L
+#include <optional>
+#define CLARA_CONFIG_OPTIONAL_TYPE std::optional
+#endif
+#endif
+#endif
+
+// ----------- #included from clara_textflow.hpp -----------
+
+// TextFlowCpp
+//
+// A single-header library for wrapping and laying out basic text, by Phil Nash
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// This project is hosted at https://github.com/philsquared/textflowcpp
+
+
+#include <cassert>
+#include <ostream>
+#include <sstream>
+#include <vector>
+
+#ifndef CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH
+#define CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH 80
+#endif
+
+namespace Catch {
+namespace clara {
+namespace TextFlow {
+
+inline auto isWhitespace(char c) -> bool {
+	static std::string chars = " \t\n\r";
+	return chars.find(c) != std::string::npos;
+}
+inline auto isBreakableBefore(char c) -> bool {
+	static std::string chars = "[({<|";
+	return chars.find(c) != std::string::npos;
+}
+inline auto isBreakableAfter(char c) -> bool {
+	static std::string chars = "])}>.,:;*+-=&/\\";
+	return chars.find(c) != std::string::npos;
+}
+
+class Columns;
+
+class Column {
+	std::vector<std::string> m_strings;
+	size_t m_width = CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH;
+	size_t m_indent = 0;
+	size_t m_initialIndent = std::string::npos;
+
+public:
+	class iterator {
+		friend Column;
+
+		Column const& m_column;
+		size_t m_stringIndex = 0;
+		size_t m_pos = 0;
+
+		size_t m_len = 0;
+		size_t m_end = 0;
+		bool m_suffix = false;
+
+		iterator(Column const& column, size_t stringIndex)
+			: m_column(column),
+			m_stringIndex(stringIndex) {}
+
+		auto line() const -> std::string const& { return m_column.m_strings[m_stringIndex]; }
+
+		auto isBoundary(size_t at) const -> bool {
+			assert(at > 0);
+			assert(at <= line().size());
+
+			return at == line().size() ||
+				(isWhitespace(line()[at]) && !isWhitespace(line()[at - 1])) ||
+				isBreakableBefore(line()[at]) ||
+				isBreakableAfter(line()[at - 1]);
+		}
+
+		void calcLength() {
+			assert(m_stringIndex < m_column.m_strings.size());
+
+			m_suffix = false;
+			auto width = m_column.m_width - indent();
+			m_end = m_pos;
+			while (m_end < line().size() && line()[m_end] != '\n')
+				++m_end;
+
+			if (m_end < m_pos + width) {
+				m_len = m_end - m_pos;
+			} else {
+				size_t len = width;
+				while (len > 0 && !isBoundary(m_pos + len))
+					--len;
+				while (len > 0 && isWhitespace(line()[m_pos + len - 1]))
+					--len;
+
+				if (len > 0) {
+					m_len = len;
+				} else {
+					m_suffix = true;
+					m_len = width - 1;
+				}
+			}
+		}
+
+		auto indent() const -> size_t {
+			auto initial = m_pos == 0 && m_stringIndex == 0 ? m_column.m_initialIndent : std::string::npos;
+			return initial == std::string::npos ? m_column.m_indent : initial;
+		}
+
+		auto addIndentAndSuffix(std::string const &plain) const -> std::string {
+			return std::string(indent(), ' ') + (m_suffix ? plain + "-" : plain);
+		}
+
+	public:
+		using difference_type = std::ptrdiff_t;
+		using value_type = std::string;
+		using pointer = value_type * ;
+		using reference = value_type & ;
+		using iterator_category = std::forward_iterator_tag;
+
+		explicit iterator(Column const& column) : m_column(column) {
+			assert(m_column.m_width > m_column.m_indent);
+			assert(m_column.m_initialIndent == std::string::npos || m_column.m_width > m_column.m_initialIndent);
+			calcLength();
+			if (m_len == 0)
+				m_stringIndex++; // Empty string
+		}
+
+		auto operator *() const -> std::string {
+			assert(m_stringIndex < m_column.m_strings.size());
+			assert(m_pos <= m_end);
+			return addIndentAndSuffix(line().substr(m_pos, m_len));
+		}
+
+		auto operator ++() -> iterator& {
+			m_pos += m_len;
+			if (m_pos < line().size() && line()[m_pos] == '\n')
+				m_pos += 1;
+			else
+				while (m_pos < line().size() && isWhitespace(line()[m_pos]))
+					++m_pos;
+
+			if (m_pos == line().size()) {
+				m_pos = 0;
+				++m_stringIndex;
+			}
+			if (m_stringIndex < m_column.m_strings.size())
+				calcLength();
+			return *this;
+		}
+		auto operator ++(int) -> iterator {
+			iterator prev(*this);
+			operator++();
+			return prev;
+		}
+
+		auto operator ==(iterator const& other) const -> bool {
+			return
+				m_pos == other.m_pos &&
+				m_stringIndex == other.m_stringIndex &&
+				&m_column == &other.m_column;
+		}
+		auto operator !=(iterator const& other) const -> bool {
+			return !operator==(other);
+		}
+	};
+	using const_iterator = iterator;
+
+	explicit Column(std::string const& text) { m_strings.push_back(text); }
+
+	auto width(size_t newWidth) -> Column& {
+		assert(newWidth > 0);
+		m_width = newWidth;
+		return *this;
+	}
+	auto indent(size_t newIndent) -> Column& {
+		m_indent = newIndent;
+		return *this;
+	}
+	auto initialIndent(size_t newIndent) -> Column& {
+		m_initialIndent = newIndent;
+		return *this;
+	}
+
+	auto width() const -> size_t { return m_width; }
+	auto begin() const -> iterator { return iterator(*this); }
+	auto end() const -> iterator { return { *this, m_strings.size() }; }
+
+	inline friend std::ostream& operator << (std::ostream& os, Column const& col) {
+		bool first = true;
+		for (auto line : col) {
+			if (first)
+				first = false;
+			else
+				os << "\n";
+			os << line;
+		}
+		return os;
+	}
+
+	auto operator + (Column const& other)->Columns;
+
+	auto toString() const -> std::string {
+		std::ostringstream oss;
+		oss << *this;
+		return oss.str();
+	}
+};
+
+class Spacer : public Column {
+
+public:
+	explicit Spacer(size_t spaceWidth) : Column("") {
+		width(spaceWidth);
+	}
+};
+
+class Columns {
+	std::vector<Column> m_columns;
+
+public:
+
+	class iterator {
+		friend Columns;
+		struct EndTag {};
+
+		std::vector<Column> const& m_columns;
+		std::vector<Column::iterator> m_iterators;
+		size_t m_activeIterators;
+
+		iterator(Columns const& columns, EndTag)
+			: m_columns(columns.m_columns),
+			m_activeIterators(0) {
+			m_iterators.reserve(m_columns.size());
+
+			for (auto const& col : m_columns)
+				m_iterators.push_back(col.end());
+		}
+
+	public:
+		using difference_type = std::ptrdiff_t;
+		using value_type = std::string;
+		using pointer = value_type * ;
+		using reference = value_type & ;
+		using iterator_category = std::forward_iterator_tag;
+
+		explicit iterator(Columns const& columns)
+			: m_columns(columns.m_columns),
+			m_activeIterators(m_columns.size()) {
+			m_iterators.reserve(m_columns.size());
+
+			for (auto const& col : m_columns)
+				m_iterators.push_back(col.begin());
+		}
+
+		auto operator ==(iterator const& other) const -> bool {
+			return m_iterators == other.m_iterators;
+		}
+		auto operator !=(iterator const& other) const -> bool {
+			return m_iterators != other.m_iterators;
+		}
+		auto operator *() const -> std::string {
+			std::string row, padding;
+
+			for (size_t i = 0; i < m_columns.size(); ++i) {
+				auto width = m_columns[i].width();
+				if (m_iterators[i] != m_columns[i].end()) {
+					std::string col = *m_iterators[i];
+					row += padding + col;
+					if (col.size() < width)
+						padding = std::string(width - col.size(), ' ');
+					else
+						padding = "";
+				} else {
+					padding += std::string(width, ' ');
+				}
+			}
+			return row;
+		}
+		auto operator ++() -> iterator& {
+			for (size_t i = 0; i < m_columns.size(); ++i) {
+				if (m_iterators[i] != m_columns[i].end())
+					++m_iterators[i];
+			}
+			return *this;
+		}
+		auto operator ++(int) -> iterator {
+			iterator prev(*this);
+			operator++();
+			return prev;
+		}
+	};
+	using const_iterator = iterator;
+
+	auto begin() const -> iterator { return iterator(*this); }
+	auto end() const -> iterator { return { *this, iterator::EndTag() }; }
+
+	auto operator += (Column const& col) -> Columns& {
+		m_columns.push_back(col);
+		return *this;
+	}
+	auto operator + (Column const& col) -> Columns {
+		Columns combined = *this;
+		combined += col;
+		return combined;
+	}
+
+	inline friend std::ostream& operator << (std::ostream& os, Columns const& cols) {
+
+		bool first = true;
+		for (auto line : cols) {
+			if (first)
+				first = false;
+			else
+				os << "\n";
+			os << line;
+		}
+		return os;
+	}
+
+	auto toString() const -> std::string {
+		std::ostringstream oss;
+		oss << *this;
+		return oss.str();
+	}
+};
+
+inline auto Column::operator + (Column const& other) -> Columns {
+	Columns cols;
+	cols += *this;
+	cols += other;
+	return cols;
+}
+}
+
+}
+}
+
+// ----------- end of #include from clara_textflow.hpp -----------
+// ........... back in clara.hpp
+
+#include <string>
+#include <memory>
+#include <set>
+#include <algorithm>
+
+#if !defined(CATCH_PLATFORM_WINDOWS) && ( defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER) )
+#define CATCH_PLATFORM_WINDOWS
+#endif
+
+namespace Catch { namespace clara {
+namespace detail {
+
+    // Traits for extracting arg and return type of lambdas (for single argument lambdas)
+    template<typename L>
+    struct UnaryLambdaTraits : UnaryLambdaTraits<decltype( &L::operator() )> {};
+
+    template<typename ClassT, typename ReturnT, typename... Args>
+    struct UnaryLambdaTraits<ReturnT( ClassT::* )( Args... ) const> {
+        static const bool isValid = false;
+    };
+
+    template<typename ClassT, typename ReturnT, typename ArgT>
+    struct UnaryLambdaTraits<ReturnT( ClassT::* )( ArgT ) const> {
+        static const bool isValid = true;
+        using ArgType = typename std::remove_const<typename std::remove_reference<ArgT>::type>::type;
+        using ReturnType = ReturnT;
+    };
+
+    class TokenStream;
+
+    // Transport for raw args (copied from main args, or supplied via init list for testing)
+    class Args {
+        friend TokenStream;
+        std::string m_exeName;
+        std::vector<std::string> m_args;
+
+    public:
+        Args( int argc, char const* const* argv )
+            : m_exeName(argv[0]),
+              m_args(argv + 1, argv + argc) {}
+
+        Args( std::initializer_list<std::string> args )
+        :   m_exeName( *args.begin() ),
+            m_args( args.begin()+1, args.end() )
+        {}
+
+        auto exeName() const -> std::string {
+            return m_exeName;
+        }
+    };
+
+    // Wraps a token coming from a token stream. These may not directly correspond to strings as a single string
+    // may encode an option + its argument if the : or = form is used
+    enum class TokenType {
+        Option, Argument
+    };
+    struct Token {
+        TokenType type;
+        std::string token;
+    };
+
+    inline auto isOptPrefix( char c ) -> bool {
+        return c == '-'
+#ifdef CATCH_PLATFORM_WINDOWS
+            || c == '/'
+#endif
+        ;
+    }
+
+    // Abstracts iterators into args as a stream of tokens, with option arguments uniformly handled
+    class TokenStream {
+        using Iterator = std::vector<std::string>::const_iterator;
+        Iterator it;
+        Iterator itEnd;
+        std::vector<Token> m_tokenBuffer;
+
+        void loadBuffer() {
+            m_tokenBuffer.resize( 0 );
+
+            // Skip any empty strings
+            while( it != itEnd && it->empty() )
+                ++it;
+
+            if( it != itEnd ) {
+                auto const &next = *it;
+                if( isOptPrefix( next[0] ) ) {
+                    auto delimiterPos = next.find_first_of( " :=" );
+                    if( delimiterPos != std::string::npos ) {
+                        m_tokenBuffer.push_back( { TokenType::Option, next.substr( 0, delimiterPos ) } );
+                        m_tokenBuffer.push_back( { TokenType::Argument, next.substr( delimiterPos + 1 ) } );
+                    } else {
+                        if( next[1] != '-' && next.size() > 2 ) {
+                            std::string opt = "- ";
+                            for( size_t i = 1; i < next.size(); ++i ) {
+                                opt[1] = next[i];
+                                m_tokenBuffer.push_back( { TokenType::Option, opt } );
+                            }
+                        } else {
+                            m_tokenBuffer.push_back( { TokenType::Option, next } );
+                        }
+                    }
+                } else {
+                    m_tokenBuffer.push_back( { TokenType::Argument, next } );
+                }
+            }
+        }
+
+    public:
+        explicit TokenStream( Args const &args ) : TokenStream( args.m_args.begin(), args.m_args.end() ) {}
+
+        TokenStream( Iterator it, Iterator itEnd ) : it( it ), itEnd( itEnd ) {
+            loadBuffer();
+        }
+
+        explicit operator bool() const {
+            return !m_tokenBuffer.empty() || it != itEnd;
+        }
+
+        auto count() const -> size_t { return m_tokenBuffer.size() + (itEnd - it); }
+
+        auto operator*() const -> Token {
+            assert( !m_tokenBuffer.empty() );
+            return m_tokenBuffer.front();
+        }
+
+        auto operator->() const -> Token const * {
+            assert( !m_tokenBuffer.empty() );
+            return &m_tokenBuffer.front();
+        }
+
+        auto operator++() -> TokenStream & {
+            if( m_tokenBuffer.size() >= 2 ) {
+                m_tokenBuffer.erase( m_tokenBuffer.begin() );
+            } else {
+                if( it != itEnd )
+                    ++it;
+                loadBuffer();
+            }
+            return *this;
+        }
+    };
+
+    class ResultBase {
+    public:
+        enum Type {
+            Ok, LogicError, RuntimeError
+        };
+
+    protected:
+        ResultBase( Type type ) : m_type( type ) {}
+        virtual ~ResultBase() = default;
+
+        virtual void enforceOk() const = 0;
+
+        Type m_type;
+    };
+
+    template<typename T>
+    class ResultValueBase : public ResultBase {
+    public:
+        auto value() const -> T const & {
+            enforceOk();
+            return m_value;
+        }
+
+    protected:
+        ResultValueBase( Type type ) : ResultBase( type ) {}
+
+        ResultValueBase( ResultValueBase const &other ) : ResultBase( other ) {
+            if( m_type == ResultBase::Ok )
+                new( &m_value ) T( other.m_value );
+        }
+
+        ResultValueBase( Type, T const &value ) : ResultBase( Ok ) {
+            new( &m_value ) T( value );
+        }
+
+        auto operator=( ResultValueBase const &other ) -> ResultValueBase & {
+            if( m_type == ResultBase::Ok )
+                m_value.~T();
+            ResultBase::operator=(other);
+            if( m_type == ResultBase::Ok )
+                new( &m_value ) T( other.m_value );
+            return *this;
+        }
+
+        ~ResultValueBase() override {
+            if( m_type == Ok )
+                m_value.~T();
+        }
+
+        union {
+            T m_value;
+        };
+    };
+
+    template<>
+    class ResultValueBase<void> : public ResultBase {
+    protected:
+        using ResultBase::ResultBase;
+    };
+
+    template<typename T = void>
+    class BasicResult : public ResultValueBase<T> {
+    public:
+        template<typename U>
+        explicit BasicResult( BasicResult<U> const &other )
+        :   ResultValueBase<T>( other.type() ),
+            m_errorMessage( other.errorMessage() )
+        {
+            assert( type() != ResultBase::Ok );
+        }
+
+        template<typename U>
+        static auto ok( U const &value ) -> BasicResult { return { ResultBase::Ok, value }; }
+        static auto ok() -> BasicResult { return { ResultBase::Ok }; }
+        static auto logicError( std::string const &message ) -> BasicResult { return { ResultBase::LogicError, message }; }
+        static auto runtimeError( std::string const &message ) -> BasicResult { return { ResultBase::RuntimeError, message }; }
+
+        explicit operator bool() const { return m_type == ResultBase::Ok; }
+        auto type() const -> ResultBase::Type { return m_type; }
+        auto errorMessage() const -> std::string { return m_errorMessage; }
+
+    protected:
+        void enforceOk() const override {
+
+            // Errors shouldn't reach this point, but if they do
+            // the actual error message will be in m_errorMessage
+            assert( m_type != ResultBase::LogicError );
+            assert( m_type != ResultBase::RuntimeError );
+            if( m_type != ResultBase::Ok )
+                std::abort();
+        }
+
+        std::string m_errorMessage; // Only populated if resultType is an error
+
+        BasicResult( ResultBase::Type type, std::string const &message )
+        :   ResultValueBase<T>(type),
+            m_errorMessage(message)
+        {
+            assert( m_type != ResultBase::Ok );
+        }
+
+        using ResultValueBase<T>::ResultValueBase;
+        using ResultBase::m_type;
+    };
+
+    enum class ParseResultType {
+        Matched, NoMatch, ShortCircuitAll, ShortCircuitSame
+    };
+
+    class ParseState {
+    public:
+
+        ParseState( ParseResultType type, TokenStream const &remainingTokens )
+        : m_type(type),
+          m_remainingTokens( remainingTokens )
+        {}
+
+        auto type() const -> ParseResultType { return m_type; }
+        auto remainingTokens() const -> TokenStream { return m_remainingTokens; }
+
+    private:
+        ParseResultType m_type;
+        TokenStream m_remainingTokens;
+    };
+
+    using Result = BasicResult<void>;
+    using ParserResult = BasicResult<ParseResultType>;
+    using InternalParseResult = BasicResult<ParseState>;
+
+    struct HelpColumns {
+        std::string left;
+        std::string right;
+    };
+
+    template<typename T>
+    inline auto convertInto( std::string const &source, T& target ) -> ParserResult {
+        std::stringstream ss;
+        ss << source;
+        ss >> target;
+        if( ss.fail() )
+            return ParserResult::runtimeError( "Unable to convert '" + source + "' to destination type" );
+        else
+            return ParserResult::ok( ParseResultType::Matched );
+    }
+    inline auto convertInto( std::string const &source, std::string& target ) -> ParserResult {
+        target = source;
+        return ParserResult::ok( ParseResultType::Matched );
+    }
+    inline auto convertInto( std::string const &source, bool &target ) -> ParserResult {
+        std::string srcLC = source;
+        std::transform( srcLC.begin(), srcLC.end(), srcLC.begin(), []( char c ) { return static_cast<char>( ::tolower(c) ); } );
+        if (srcLC == "y" || srcLC == "1" || srcLC == "true" || srcLC == "yes" || srcLC == "on")
+            target = true;
+        else if (srcLC == "n" || srcLC == "0" || srcLC == "false" || srcLC == "no" || srcLC == "off")
+            target = false;
+        else
+            return ParserResult::runtimeError( "Expected a boolean value but did not recognise: '" + source + "'" );
+        return ParserResult::ok( ParseResultType::Matched );
+    }
+#ifdef CLARA_CONFIG_OPTIONAL_TYPE
+    template<typename T>
+    inline auto convertInto( std::string const &source, CLARA_CONFIG_OPTIONAL_TYPE<T>& target ) -> ParserResult {
+        T temp;
+        auto result = convertInto( source, temp );
+        if( result )
+            target = std::move(temp);
+        return result;
+    }
+#endif // CLARA_CONFIG_OPTIONAL_TYPE
+
+    struct NonCopyable {
+        NonCopyable() = default;
+        NonCopyable( NonCopyable const & ) = delete;
+        NonCopyable( NonCopyable && ) = delete;
+        NonCopyable &operator=( NonCopyable const & ) = delete;
+        NonCopyable &operator=( NonCopyable && ) = delete;
+    };
+
+    struct BoundRef : NonCopyable {
+        virtual ~BoundRef() = default;
+        virtual auto isContainer() const -> bool { return false; }
+        virtual auto isFlag() const -> bool { return false; }
+    };
+    struct BoundValueRefBase : BoundRef {
+        virtual auto setValue( std::string const &arg ) -> ParserResult = 0;
+    };
+    struct BoundFlagRefBase : BoundRef {
+        virtual auto setFlag( bool flag ) -> ParserResult = 0;
+        virtual auto isFlag() const -> bool { return true; }
+    };
+
+    template<typename T>
+    struct BoundValueRef : BoundValueRefBase {
+        T &m_ref;
+
+        explicit BoundValueRef( T &ref ) : m_ref( ref ) {}
+
+        auto setValue( std::string const &arg ) -> ParserResult override {
+            return convertInto( arg, m_ref );
+        }
+    };
+
+    template<typename T>
+    struct BoundValueRef<std::vector<T>> : BoundValueRefBase {
+        std::vector<T> &m_ref;
+
+        explicit BoundValueRef( std::vector<T> &ref ) : m_ref( ref ) {}
+
+        auto isContainer() const -> bool override { return true; }
+
+        auto setValue( std::string const &arg ) -> ParserResult override {
+            T temp;
+            auto result = convertInto( arg, temp );
+            if( result )
+                m_ref.push_back( temp );
+            return result;
+        }
+    };
+
+    struct BoundFlagRef : BoundFlagRefBase {
+        bool &m_ref;
+
+        explicit BoundFlagRef( bool &ref ) : m_ref( ref ) {}
+
+        auto setFlag( bool flag ) -> ParserResult override {
+            m_ref = flag;
+            return ParserResult::ok( ParseResultType::Matched );
+        }
+    };
+
+    template<typename ReturnType>
+    struct LambdaInvoker {
+        static_assert( std::is_same<ReturnType, ParserResult>::value, "Lambda must return void or clara::ParserResult" );
+
+        template<typename L, typename ArgType>
+        static auto invoke( L const &lambda, ArgType const &arg ) -> ParserResult {
+            return lambda( arg );
+        }
+    };
+
+    template<>
+    struct LambdaInvoker<void> {
+        template<typename L, typename ArgType>
+        static auto invoke( L const &lambda, ArgType const &arg ) -> ParserResult {
+            lambda( arg );
+            return ParserResult::ok( ParseResultType::Matched );
+        }
+    };
+
+    template<typename ArgType, typename L>
+    inline auto invokeLambda( L const &lambda, std::string const &arg ) -> ParserResult {
+        ArgType temp{};
+        auto result = convertInto( arg, temp );
+        return !result
+           ? result
+           : LambdaInvoker<typename UnaryLambdaTraits<L>::ReturnType>::invoke( lambda, temp );
+    }
+
+    template<typename L>
+    struct BoundLambda : BoundValueRefBase {
+        L m_lambda;
+
+        static_assert( UnaryLambdaTraits<L>::isValid, "Supplied lambda must take exactly one argument" );
+        explicit BoundLambda( L const &lambda ) : m_lambda( lambda ) {}
+
+        auto setValue( std::string const &arg ) -> ParserResult override {
+            return invokeLambda<typename UnaryLambdaTraits<L>::ArgType>( m_lambda, arg );
+        }
+    };
+
+    template<typename L>
+    struct BoundFlagLambda : BoundFlagRefBase {
+        L m_lambda;
+
+        static_assert( UnaryLambdaTraits<L>::isValid, "Supplied lambda must take exactly one argument" );
+        static_assert( std::is_same<typename UnaryLambdaTraits<L>::ArgType, bool>::value, "flags must be boolean" );
+
+        explicit BoundFlagLambda( L const &lambda ) : m_lambda( lambda ) {}
+
+        auto setFlag( bool flag ) -> ParserResult override {
+            return LambdaInvoker<typename UnaryLambdaTraits<L>::ReturnType>::invoke( m_lambda, flag );
+        }
+    };
+
+    enum class Optionality { Optional, Required };
+
+    struct Parser;
+
+    class ParserBase {
+    public:
+        virtual ~ParserBase() = default;
+        virtual auto validate() const -> Result { return Result::ok(); }
+        virtual auto parse( std::string const& exeName, TokenStream const &tokens) const -> InternalParseResult  = 0;
+        virtual auto cardinality() const -> size_t { return 1; }
+
+        auto parse( Args const &args ) const -> InternalParseResult {
+            return parse( args.exeName(), TokenStream( args ) );
+        }
+    };
+
+    template<typename DerivedT>
+    class ComposableParserImpl : public ParserBase {
+    public:
+        template<typename T>
+        auto operator|( T const &other ) const -> Parser;
+
+		template<typename T>
+        auto operator+( T const &other ) const -> Parser;
+    };
+
+    // Common code and state for Args and Opts
+    template<typename DerivedT>
+    class ParserRefImpl : public ComposableParserImpl<DerivedT> {
+    protected:
+        Optionality m_optionality = Optionality::Optional;
+        std::shared_ptr<BoundRef> m_ref;
+        std::string m_hint;
+        std::string m_description;
+
+        explicit ParserRefImpl( std::shared_ptr<BoundRef> const &ref ) : m_ref( ref ) {}
+
+    public:
+        template<typename T>
+        ParserRefImpl( T &ref, std::string const &hint )
+        :   m_ref( std::make_shared<BoundValueRef<T>>( ref ) ),
+            m_hint( hint )
+        {}
+
+        template<typename LambdaT>
+        ParserRefImpl( LambdaT const &ref, std::string const &hint )
+        :   m_ref( std::make_shared<BoundLambda<LambdaT>>( ref ) ),
+            m_hint(hint)
+        {}
+
+        auto operator()( std::string const &description ) -> DerivedT & {
+            m_description = description;
+            return static_cast<DerivedT &>( *this );
+        }
+
+        auto optional() -> DerivedT & {
+            m_optionality = Optionality::Optional;
+            return static_cast<DerivedT &>( *this );
+        };
+
+        auto required() -> DerivedT & {
+            m_optionality = Optionality::Required;
+            return static_cast<DerivedT &>( *this );
+        };
+
+        auto isOptional() const -> bool {
+            return m_optionality == Optionality::Optional;
+        }
+
+        auto cardinality() const -> size_t override {
+            if( m_ref->isContainer() )
+                return 0;
+            else
+                return 1;
+        }
+
+        auto hint() const -> std::string { return m_hint; }
+    };
+
+    class ExeName : public ComposableParserImpl<ExeName> {
+        std::shared_ptr<std::string> m_name;
+        std::shared_ptr<BoundValueRefBase> m_ref;
+
+        template<typename LambdaT>
+        static auto makeRef(LambdaT const &lambda) -> std::shared_ptr<BoundValueRefBase> {
+            return std::make_shared<BoundLambda<LambdaT>>( lambda) ;
+        }
+
+    public:
+        ExeName() : m_name( std::make_shared<std::string>( "<executable>" ) ) {}
+
+        explicit ExeName( std::string &ref ) : ExeName() {
+            m_ref = std::make_shared<BoundValueRef<std::string>>( ref );
+        }
+
+        template<typename LambdaT>
+        explicit ExeName( LambdaT const& lambda ) : ExeName() {
+            m_ref = std::make_shared<BoundLambda<LambdaT>>( lambda );
+        }
+
+        // The exe name is not parsed out of the normal tokens, but is handled specially
+        auto parse( std::string const&, TokenStream const &tokens ) const -> InternalParseResult override {
+            return InternalParseResult::ok( ParseState( ParseResultType::NoMatch, tokens ) );
+        }
+
+        auto name() const -> std::string { return *m_name; }
+        auto set( std::string const& newName ) -> ParserResult {
+
+            auto lastSlash = newName.find_last_of( "\\/" );
+            auto filename = ( lastSlash == std::string::npos )
+                    ? newName
+                    : newName.substr( lastSlash+1 );
+
+            *m_name = filename;
+            if( m_ref )
+                return m_ref->setValue( filename );
+            else
+                return ParserResult::ok( ParseResultType::Matched );
+        }
+    };
+
+    class Arg : public ParserRefImpl<Arg> {
+    public:
+        using ParserRefImpl::ParserRefImpl;
+
+        auto parse( std::string const &, TokenStream const &tokens ) const -> InternalParseResult override {
+            auto validationResult = validate();
+            if( !validationResult )
+                return InternalParseResult( validationResult );
+
+            auto remainingTokens = tokens;
+            auto const &token = *remainingTokens;
+            if( token.type != TokenType::Argument )
+                return InternalParseResult::ok( ParseState( ParseResultType::NoMatch, remainingTokens ) );
+
+            assert( !m_ref->isFlag() );
+            auto valueRef = static_cast<detail::BoundValueRefBase*>( m_ref.get() );
+
+            auto result = valueRef->setValue( remainingTokens->token );
+            if( !result )
+                return InternalParseResult( result );
+            else
+                return InternalParseResult::ok( ParseState( ParseResultType::Matched, ++remainingTokens ) );
+        }
+    };
+
+    inline auto normaliseOpt( std::string const &optName ) -> std::string {
+#ifdef CATCH_PLATFORM_WINDOWS
+        if( optName[0] == '/' )
+            return "-" + optName.substr( 1 );
+        else
+#endif
+            return optName;
+    }
+
+    class Opt : public ParserRefImpl<Opt> {
+    protected:
+        std::vector<std::string> m_optNames;
+
+    public:
+        template<typename LambdaT>
+        explicit Opt( LambdaT const &ref ) : ParserRefImpl( std::make_shared<BoundFlagLambda<LambdaT>>( ref ) ) {}
+
+        explicit Opt( bool &ref ) : ParserRefImpl( std::make_shared<BoundFlagRef>( ref ) ) {}
+
+        template<typename LambdaT>
+        Opt( LambdaT const &ref, std::string const &hint ) : ParserRefImpl( ref, hint ) {}
+
+        template<typename T>
+        Opt( T &ref, std::string const &hint ) : ParserRefImpl( ref, hint ) {}
+
+        auto operator[]( std::string const &optName ) -> Opt & {
+            m_optNames.push_back( optName );
+            return *this;
+        }
+
+        auto getHelpColumns() const -> std::vector<HelpColumns> {
+            std::ostringstream oss;
+            bool first = true;
+            for( auto const &opt : m_optNames ) {
+                if (first)
+                    first = false;
+                else
+                    oss << ", ";
+                oss << opt;
+            }
+            if( !m_hint.empty() )
+                oss << " <" << m_hint << ">";
+            return { { oss.str(), m_description } };
+        }
+
+        auto isMatch( std::string const &optToken ) const -> bool {
+            auto normalisedToken = normaliseOpt( optToken );
+            for( auto const &name : m_optNames ) {
+                if( normaliseOpt( name ) == normalisedToken )
+                    return true;
+            }
+            return false;
+        }
+
+        using ParserBase::parse;
+
+        auto parse( std::string const&, TokenStream const &tokens ) const -> InternalParseResult override {
+            auto validationResult = validate();
+            if( !validationResult )
+                return InternalParseResult( validationResult );
+
+            auto remainingTokens = tokens;
+            if( remainingTokens && remainingTokens->type == TokenType::Option ) {
+                auto const &token = *remainingTokens;
+                if( isMatch(token.token ) ) {
+                    if( m_ref->isFlag() ) {
+                        auto flagRef = static_cast<detail::BoundFlagRefBase*>( m_ref.get() );
+                        auto result = flagRef->setFlag( true );
+                        if( !result )
+                            return InternalParseResult( result );
+                        if( result.value() == ParseResultType::ShortCircuitAll )
+                            return InternalParseResult::ok( ParseState( result.value(), remainingTokens ) );
+                    } else {
+                        auto valueRef = static_cast<detail::BoundValueRefBase*>( m_ref.get() );
+                        ++remainingTokens;
+                        if( !remainingTokens )
+                            return InternalParseResult::runtimeError( "Expected argument following " + token.token );
+                        auto const &argToken = *remainingTokens;
+                        if( argToken.type != TokenType::Argument )
+                            return InternalParseResult::runtimeError( "Expected argument following " + token.token );
+                        auto result = valueRef->setValue( argToken.token );
+                        if( !result )
+                            return InternalParseResult( result );
+                        if( result.value() == ParseResultType::ShortCircuitAll )
+                            return InternalParseResult::ok( ParseState( result.value(), remainingTokens ) );
+                    }
+                    return InternalParseResult::ok( ParseState( ParseResultType::Matched, ++remainingTokens ) );
+                }
+            }
+            return InternalParseResult::ok( ParseState( ParseResultType::NoMatch, remainingTokens ) );
+        }
+
+        auto validate() const -> Result override {
+            if( m_optNames.empty() )
+                return Result::logicError( "No options supplied to Opt" );
+            for( auto const &name : m_optNames ) {
+                if( name.empty() )
+                    return Result::logicError( "Option name cannot be empty" );
+#ifdef CATCH_PLATFORM_WINDOWS
+                if( name[0] != '-' && name[0] != '/' )
+                    return Result::logicError( "Option name must begin with '-' or '/'" );
+#else
+                if( name[0] != '-' )
+                    return Result::logicError( "Option name must begin with '-'" );
+#endif
+            }
+            return ParserRefImpl::validate();
+        }
+    };
+
+    struct Help : Opt {
+        Help( bool &showHelpFlag )
+        :   Opt([&]( bool flag ) {
+                showHelpFlag = flag;
+                return ParserResult::ok( ParseResultType::ShortCircuitAll );
+            })
+        {
+            static_cast<Opt &>( *this )
+                    ("display usage information")
+                    ["-?"]["-h"]["--help"]
+                    .optional();
+        }
+    };
+
+    struct Parser : ParserBase {
+
+        mutable ExeName m_exeName;
+        std::vector<Opt> m_options;
+        std::vector<Arg> m_args;
+
+        auto operator|=( ExeName const &exeName ) -> Parser & {
+            m_exeName = exeName;
+            return *this;
+        }
+
+        auto operator|=( Arg const &arg ) -> Parser & {
+            m_args.push_back(arg);
+            return *this;
+        }
+
+        auto operator|=( Opt const &opt ) -> Parser & {
+            m_options.push_back(opt);
+            return *this;
+        }
+
+        auto operator|=( Parser const &other ) -> Parser & {
+            m_options.insert(m_options.end(), other.m_options.begin(), other.m_options.end());
+            m_args.insert(m_args.end(), other.m_args.begin(), other.m_args.end());
+            return *this;
+        }
+
+        template<typename T>
+        auto operator|( T const &other ) const -> Parser {
+            return Parser( *this ) |= other;
+        }
+
+        // Forward deprecated interface with '+' instead of '|'
+        template<typename T>
+        auto operator+=( T const &other ) -> Parser & { return operator|=( other ); }
+        template<typename T>
+        auto operator+( T const &other ) const -> Parser { return operator|( other ); }
+
+        auto getHelpColumns() const -> std::vector<HelpColumns> {
+            std::vector<HelpColumns> cols;
+            for (auto const &o : m_options) {
+                auto childCols = o.getHelpColumns();
+                cols.insert( cols.end(), childCols.begin(), childCols.end() );
+            }
+            return cols;
+        }
+
+        void writeToStream( std::ostream &os ) const {
+            if (!m_exeName.name().empty()) {
+                os << "usage:\n" << "  " << m_exeName.name() << " ";
+                bool required = true, first = true;
+                for( auto const &arg : m_args ) {
+                    if (first)
+                        first = false;
+                    else
+                        os << " ";
+                    if( arg.isOptional() && required ) {
+                        os << "[";
+                        required = false;
+                    }
+                    os << "<" << arg.hint() << ">";
+                    if( arg.cardinality() == 0 )
+                        os << " ... ";
+                }
+                if( !required )
+                    os << "]";
+                if( !m_options.empty() )
+                    os << " options";
+                os << "\n\nwhere options are:" << std::endl;
+            }
+
+            auto rows = getHelpColumns();
+            size_t consoleWidth = CATCH_CLARA_CONFIG_CONSOLE_WIDTH;
+            size_t optWidth = 0;
+            for( auto const &cols : rows )
+                optWidth = (std::max)(optWidth, cols.left.size() + 2);
+
+            optWidth = (std::min)(optWidth, consoleWidth/2);
+
+            for( auto const &cols : rows ) {
+                auto row =
+                        TextFlow::Column( cols.left ).width( optWidth ).indent( 2 ) +
+                        TextFlow::Spacer(4) +
+                        TextFlow::Column( cols.right ).width( consoleWidth - 7 - optWidth );
+                os << row << std::endl;
+            }
+        }
+
+        friend auto operator<<( std::ostream &os, Parser const &parser ) -> std::ostream& {
+            parser.writeToStream( os );
+            return os;
+        }
+
+        auto validate() const -> Result override {
+            for( auto const &opt : m_options ) {
+                auto result = opt.validate();
+                if( !result )
+                    return result;
+            }
+            for( auto const &arg : m_args ) {
+                auto result = arg.validate();
+                if( !result )
+                    return result;
+            }
+            return Result::ok();
+        }
+
+        using ParserBase::parse;
+
+        auto parse( std::string const& exeName, TokenStream const &tokens ) const -> InternalParseResult override {
+
+            struct ParserInfo {
+                ParserBase const* parser = nullptr;
+                size_t count = 0;
+            };
+            const size_t totalParsers = m_options.size() + m_args.size();
+            assert( totalParsers < 512 );
+            // ParserInfo parseInfos[totalParsers]; // <-- this is what we really want to do
+            ParserInfo parseInfos[512];
+
+            {
+                size_t i = 0;
+                for (auto const &opt : m_options) parseInfos[i++].parser = &opt;
+                for (auto const &arg : m_args) parseInfos[i++].parser = &arg;
+            }
+
+            m_exeName.set( exeName );
+
+            auto result = InternalParseResult::ok( ParseState( ParseResultType::NoMatch, tokens ) );
+            while( result.value().remainingTokens() ) {
+                bool tokenParsed = false;
+
+                for( size_t i = 0; i < totalParsers; ++i ) {
+                    auto&  parseInfo = parseInfos[i];
+                    if( parseInfo.parser->cardinality() == 0 || parseInfo.count < parseInfo.parser->cardinality() ) {
+                        result = parseInfo.parser->parse(exeName, result.value().remainingTokens());
+                        if (!result)
+                            return result;
+                        if (result.value().type() != ParseResultType::NoMatch) {
+                            tokenParsed = true;
+                            ++parseInfo.count;
+                            break;
+                        }
+                    }
+                }
+
+                if( result.value().type() == ParseResultType::ShortCircuitAll )
+                    return result;
+                if( !tokenParsed )
+                    return InternalParseResult::runtimeError( "Unrecognised token: " + result.value().remainingTokens()->token );
+            }
+            // !TBD Check missing required options
+            return result;
+        }
+    };
+
+    template<typename DerivedT>
+    template<typename T>
+    auto ComposableParserImpl<DerivedT>::operator|( T const &other ) const -> Parser {
+        return Parser() | static_cast<DerivedT const &>( *this ) | other;
+    }
+} // namespace detail
+
+// A Combined parser
+using detail::Parser;
+
+// A parser for options
+using detail::Opt;
+
+// A parser for arguments
+using detail::Arg;
+
+// Wrapper for argc, argv from main()
+using detail::Args;
+
+// Specifies the name of the executable
+using detail::ExeName;
+
+// Convenience wrapper for option parser that specifies the help option
+using detail::Help;
+
+// enum of result types from a parse
+using detail::ParseResultType;
+
+// Result type for parser operation
+using detail::ParserResult;
+
+}} // namespace Catch::clara
+
+// end clara.hpp
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// Restore Clara's value for console width, if present
+#ifdef CATCH_TEMP_CLARA_CONFIG_CONSOLE_WIDTH
+#define CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH CATCH_TEMP_CLARA_CONFIG_CONSOLE_WIDTH
+#undef CATCH_TEMP_CLARA_CONFIG_CONSOLE_WIDTH
+#endif
+
+// end catch_clara.h
+namespace Catch {
+
+    clara::Parser makeCommandLineParser( ConfigData& config );
+
+} // end namespace Catch
+
+// end catch_commandline.h
+#include <fstream>
+#include <ctime>
+
+namespace Catch {
+
+    clara::Parser makeCommandLineParser( ConfigData& config ) {
+
+        using namespace clara;
+
+        auto const setWarning = [&]( std::string const& warning ) {
+                auto warningSet = [&]() {
+                    if( warning == "NoAssertions" )
+                        return WarnAbout::NoAssertions;
+
+                    if ( warning == "NoTests" )
+                        return WarnAbout::NoTests;
+
+                    return WarnAbout::Nothing;
+                }();
+
+                if (warningSet == WarnAbout::Nothing)
+                    return ParserResult::runtimeError( "Unrecognised warning: '" + warning + "'" );
+                config.warnings = static_cast<WarnAbout::What>( config.warnings | warningSet );
+                return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const loadTestNamesFromFile = [&]( std::string const& filename ) {
+                std::ifstream f( filename.c_str() );
+                if( !f.is_open() )
+                    return ParserResult::runtimeError( "Unable to load input file: '" + filename + "'" );
+
+                std::string line;
+                while( std::getline( f, line ) ) {
+                    line = trim(line);
+                    if( !line.empty() && !startsWith( line, '#' ) ) {
+                        if( !startsWith( line, '"' ) )
+                            line = '"' + line + '"';
+                        config.testsOrTags.push_back( line + ',' );
+                    }
+                }
+                return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const setTestOrder = [&]( std::string const& order ) {
+                if( startsWith( "declared", order ) )
+                    config.runOrder = RunTests::InDeclarationOrder;
+                else if( startsWith( "lexical", order ) )
+                    config.runOrder = RunTests::InLexicographicalOrder;
+                else if( startsWith( "random", order ) )
+                    config.runOrder = RunTests::InRandomOrder;
+                else
+                    return clara::ParserResult::runtimeError( "Unrecognised ordering: '" + order + "'" );
+                return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const setRngSeed = [&]( std::string const& seed ) {
+                if( seed != "time" )
+                    return clara::detail::convertInto( seed, config.rngSeed );
+                config.rngSeed = static_cast<unsigned int>( std::time(nullptr) );
+                return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const setColourUsage = [&]( std::string const& useColour ) {
+                    auto mode = toLower( useColour );
+
+                    if( mode == "yes" )
+                        config.useColour = UseColour::Yes;
+                    else if( mode == "no" )
+                        config.useColour = UseColour::No;
+                    else if( mode == "auto" )
+                        config.useColour = UseColour::Auto;
+                    else
+                        return ParserResult::runtimeError( "colour mode must be one of: auto, yes or no. '" + useColour + "' not recognised" );
+                return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const setWaitForKeypress = [&]( std::string const& keypress ) {
+                auto keypressLc = toLower( keypress );
+                if( keypressLc == "start" )
+                    config.waitForKeypress = WaitForKeypress::BeforeStart;
+                else if( keypressLc == "exit" )
+                    config.waitForKeypress = WaitForKeypress::BeforeExit;
+                else if( keypressLc == "both" )
+                    config.waitForKeypress = WaitForKeypress::BeforeStartAndExit;
+                else
+                    return ParserResult::runtimeError( "keypress argument must be one of: start, exit or both. '" + keypress + "' not recognised" );
+            return ParserResult::ok( ParseResultType::Matched );
+            };
+        auto const setVerbosity = [&]( std::string const& verbosity ) {
+            auto lcVerbosity = toLower( verbosity );
+            if( lcVerbosity == "quiet" )
+                config.verbosity = Verbosity::Quiet;
+            else if( lcVerbosity == "normal" )
+                config.verbosity = Verbosity::Normal;
+            else if( lcVerbosity == "high" )
+                config.verbosity = Verbosity::High;
+            else
+                return ParserResult::runtimeError( "Unrecognised verbosity, '" + verbosity + "'" );
+            return ParserResult::ok( ParseResultType::Matched );
+        };
+        auto const setReporter = [&]( std::string const& reporter ) {
+            IReporterRegistry::FactoryMap const& factories = getRegistryHub().getReporterRegistry().getFactories();
+
+            auto lcReporter = toLower( reporter );
+            auto result = factories.find( lcReporter );
+
+            if( factories.end() != result )
+                config.reporterName = lcReporter;
+            else
+                return ParserResult::runtimeError( "Unrecognized reporter, '" + reporter + "'. Check available with --list-reporters" );
+            return ParserResult::ok( ParseResultType::Matched );
+        };
+
+        auto cli
+            = ExeName( config.processName )
+            | Help( config.showHelp )
+            | Opt( config.listTests )
+                ["-l"]["--list-tests"]
+                ( "list all/matching test cases" )
+            | Opt( config.listTags )
+                ["-t"]["--list-tags"]
+                ( "list all/matching tags" )
+            | Opt( config.showSuccessfulTests )
+                ["-s"]["--success"]
+                ( "include successful tests in output" )
+            | Opt( config.shouldDebugBreak )
+                ["-b"]["--break"]
+                ( "break into debugger on failure" )
+            | Opt( config.noThrow )
+                ["-e"]["--nothrow"]
+                ( "skip exception tests" )
+            | Opt( config.showInvisibles )
+                ["-i"]["--invisibles"]
+                ( "show invisibles (tabs, newlines)" )
+            | Opt( config.outputFilename, "filename" )
+                ["-o"]["--out"]
+                ( "output filename" )
+            | Opt( setReporter, "name" )
+                ["-r"]["--reporter"]
+                ( "reporter to use (defaults to console)" )
+            | Opt( config.name, "name" )
+                ["-n"]["--name"]
+                ( "suite name" )
+            | Opt( [&]( bool ){ config.abortAfter = 1; } )
+                ["-a"]["--abort"]
+                ( "abort at first failure" )
+            | Opt( [&]( int x ){ config.abortAfter = x; }, "no. failures" )
+                ["-x"]["--abortx"]
+                ( "abort after x failures" )
+            | Opt( setWarning, "warning name" )
+                ["-w"]["--warn"]
+                ( "enable warnings" )
+            | Opt( [&]( bool flag ) { config.showDurations = flag ? ShowDurations::Always : ShowDurations::Never; }, "yes|no" )
+                ["-d"]["--durations"]
+                ( "show test durations" )
+            | Opt( loadTestNamesFromFile, "filename" )
+                ["-f"]["--input-file"]
+                ( "load test names to run from a file" )
+            | Opt( config.filenamesAsTags )
+                ["-#"]["--filenames-as-tags"]
+                ( "adds a tag for the filename" )
+            | Opt( config.sectionsToRun, "section name" )
+                ["-c"]["--section"]
+                ( "specify section to run" )
+            | Opt( setVerbosity, "quiet|normal|high" )
+                ["-v"]["--verbosity"]
+                ( "set output verbosity" )
+            | Opt( config.listTestNamesOnly )
+                ["--list-test-names-only"]
+                ( "list all/matching test cases names only" )
+            | Opt( config.listReporters )
+                ["--list-reporters"]
+                ( "list all reporters" )
+            | Opt( setTestOrder, "decl|lex|rand" )
+                ["--order"]
+                ( "test case order (defaults to decl)" )
+            | Opt( setRngSeed, "'time'|number" )
+                ["--rng-seed"]
+                ( "set a specific seed for random numbers" )
+            | Opt( setColourUsage, "yes|no" )
+                ["--use-colour"]
+                ( "should output be colourised" )
+            | Opt( config.libIdentify )
+                ["--libidentify"]
+                ( "report name and version according to libidentify standard" )
+            | Opt( setWaitForKeypress, "start|exit|both" )
+                ["--wait-for-keypress"]
+                ( "waits for a keypress before exiting" )
+            | Opt( config.benchmarkResolutionMultiple, "multiplier" )
+                ["--benchmark-resolution-multiple"]
+                ( "multiple of clock resolution to run benchmarks" )
+
+            | Arg( config.testsOrTags, "test name|pattern|tags" )
+                ( "which test or tests to use" );
+
+        return cli;
+    }
+
+} // end namespace Catch
+// end catch_commandline.cpp
+// start catch_common.cpp
+
+#include <cstring>
+#include <ostream>
+
+namespace Catch {
+
+    bool SourceLineInfo::empty() const noexcept {
+        return file[0] == '\0';
+    }
+    bool SourceLineInfo::operator == ( SourceLineInfo const& other ) const noexcept {
+        return line == other.line && (file == other.file || std::strcmp(file, other.file) == 0);
+    }
+    bool SourceLineInfo::operator < ( SourceLineInfo const& other ) const noexcept {
+        // We can assume that the same file will usually have the same pointer.
+        // Thus, if the pointers are the same, there is no point in calling the strcmp
+        return line < other.line || ( line == other.line && file != other.file && (std::strcmp(file, other.file) < 0));
+    }
+
+    std::ostream& operator << ( std::ostream& os, SourceLineInfo const& info ) {
+#ifndef __GNUG__
+        os << info.file << '(' << info.line << ')';
+#else
+        os << info.file << ':' << info.line;
+#endif
+        return os;
+    }
+
+    std::string StreamEndStop::operator+() const {
+        return std::string();
+    }
+
+    NonCopyable::NonCopyable() = default;
+    NonCopyable::~NonCopyable() = default;
+
+}
+// end catch_common.cpp
+// start catch_config.cpp
+
+namespace Catch {
+
+    Config::Config( ConfigData const& data )
+    :   m_data( data ),
+        m_stream( openStream() )
+    {
+        TestSpecParser parser(ITagAliasRegistry::get());
+        if (data.testsOrTags.empty()) {
+            parser.parse("~[.]"); // All not hidden tests
+        }
+        else {
+            m_hasTestFilters = true;
+            for( auto const& testOrTags : data.testsOrTags )
+                parser.parse( testOrTags );
+        }
+        m_testSpec = parser.testSpec();
+    }
+
+    std::string const& Config::getFilename() const {
+        return m_data.outputFilename ;
+    }
+
+    bool Config::listTests() const          { return m_data.listTests; }
+    bool Config::listTestNamesOnly() const  { return m_data.listTestNamesOnly; }
+    bool Config::listTags() const           { return m_data.listTags; }
+    bool Config::listReporters() const      { return m_data.listReporters; }
+
+    std::string Config::getProcessName() const { return m_data.processName; }
+    std::string const& Config::getReporterName() const { return m_data.reporterName; }
+
+    std::vector<std::string> const& Config::getTestsOrTags() const { return m_data.testsOrTags; }
+    std::vector<std::string> const& Config::getSectionsToRun() const { return m_data.sectionsToRun; }
+
+    TestSpec const& Config::testSpec() const { return m_testSpec; }
+    bool Config::hasTestFilters() const { return m_hasTestFilters; }
+
+    bool Config::showHelp() const { return m_data.showHelp; }
+
+    // IConfig interface
+    bool Config::allowThrows() const                   { return !m_data.noThrow; }
+    std::ostream& Config::stream() const               { return m_stream->stream(); }
+    std::string Config::name() const                   { return m_data.name.empty() ? m_data.processName : m_data.name; }
+    bool Config::includeSuccessfulResults() const      { return m_data.showSuccessfulTests; }
+    bool Config::warnAboutMissingAssertions() const    { return !!(m_data.warnings & WarnAbout::NoAssertions); }
+    bool Config::warnAboutNoTests() const              { return !!(m_data.warnings & WarnAbout::NoTests); }
+    ShowDurations::OrNot Config::showDurations() const { return m_data.showDurations; }
+    RunTests::InWhatOrder Config::runOrder() const     { return m_data.runOrder; }
+    unsigned int Config::rngSeed() const               { return m_data.rngSeed; }
+    int Config::benchmarkResolutionMultiple() const    { return m_data.benchmarkResolutionMultiple; }
+    UseColour::YesOrNo Config::useColour() const       { return m_data.useColour; }
+    bool Config::shouldDebugBreak() const              { return m_data.shouldDebugBreak; }
+    int Config::abortAfter() const                     { return m_data.abortAfter; }
+    bool Config::showInvisibles() const                { return m_data.showInvisibles; }
+    Verbosity Config::verbosity() const                { return m_data.verbosity; }
+
+    IStream const* Config::openStream() {
+        return Catch::makeStream(m_data.outputFilename);
+    }
+
+} // end namespace Catch
+// end catch_config.cpp
+// start catch_console_colour.cpp
+
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wexit-time-destructors"
+#endif
+
+// start catch_errno_guard.h
+
+namespace Catch {
+
+    class ErrnoGuard {
+    public:
+        ErrnoGuard();
+        ~ErrnoGuard();
+    private:
+        int m_oldErrno;
+    };
+
+}
+
+// end catch_errno_guard.h
+#include <sstream>
+
+namespace Catch {
+    namespace {
+
+        struct IColourImpl {
+            virtual ~IColourImpl() = default;
+            virtual void use( Colour::Code _colourCode ) = 0;
+        };
+
+        struct NoColourImpl : IColourImpl {
+            void use( Colour::Code ) {}
+
+            static IColourImpl* instance() {
+                static NoColourImpl s_instance;
+                return &s_instance;
+            }
+        };
+
+    } // anon namespace
+} // namespace Catch
+
+#if !defined( CATCH_CONFIG_COLOUR_NONE ) && !defined( CATCH_CONFIG_COLOUR_WINDOWS ) && !defined( CATCH_CONFIG_COLOUR_ANSI )
+#   ifdef CATCH_PLATFORM_WINDOWS
+#       define CATCH_CONFIG_COLOUR_WINDOWS
+#   else
+#       define CATCH_CONFIG_COLOUR_ANSI
+#   endif
+#endif
+
+#if defined ( CATCH_CONFIG_COLOUR_WINDOWS ) /////////////////////////////////////////
+
+namespace Catch {
+namespace {
+
+    class Win32ColourImpl : public IColourImpl {
+    public:
+        Win32ColourImpl() : stdoutHandle( GetStdHandle(STD_OUTPUT_HANDLE) )
+        {
+            CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
+            GetConsoleScreenBufferInfo( stdoutHandle, &csbiInfo );
+            originalForegroundAttributes = csbiInfo.wAttributes & ~( BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_BLUE | BACKGROUND_INTENSITY );
+            originalBackgroundAttributes = csbiInfo.wAttributes & ~( FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_INTENSITY );
+        }
+
+        virtual void use( Colour::Code _colourCode ) override {
+            switch( _colourCode ) {
+                case Colour::None:      return setTextAttribute( originalForegroundAttributes );
+                case Colour::White:     return setTextAttribute( FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE );
+                case Colour::Red:       return setTextAttribute( FOREGROUND_RED );
+                case Colour::Green:     return setTextAttribute( FOREGROUND_GREEN );
+                case Colour::Blue:      return setTextAttribute( FOREGROUND_BLUE );
+                case Colour::Cyan:      return setTextAttribute( FOREGROUND_BLUE | FOREGROUND_GREEN );
+                case Colour::Yellow:    return setTextAttribute( FOREGROUND_RED | FOREGROUND_GREEN );
+                case Colour::Grey:      return setTextAttribute( 0 );
+
+                case Colour::LightGrey:     return setTextAttribute( FOREGROUND_INTENSITY );
+                case Colour::BrightRed:     return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_RED );
+                case Colour::BrightGreen:   return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_GREEN );
+                case Colour::BrightWhite:   return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE );
+                case Colour::BrightYellow:  return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_GREEN );
+
+                case Colour::Bright: CATCH_INTERNAL_ERROR( "not a colour" );
+
+                default:
+                    CATCH_ERROR( "Unknown colour requested" );
+            }
+        }
+
+    private:
+        void setTextAttribute( WORD _textAttribute ) {
+            SetConsoleTextAttribute( stdoutHandle, _textAttribute | originalBackgroundAttributes );
+        }
+        HANDLE stdoutHandle;
+        WORD originalForegroundAttributes;
+        WORD originalBackgroundAttributes;
+    };
+
+    IColourImpl* platformColourInstance() {
+        static Win32ColourImpl s_instance;
+
+        IConfigPtr config = getCurrentContext().getConfig();
+        UseColour::YesOrNo colourMode = config
+            ? config->useColour()
+            : UseColour::Auto;
+        if( colourMode == UseColour::Auto )
+            colourMode = UseColour::Yes;
+        return colourMode == UseColour::Yes
+            ? &s_instance
+            : NoColourImpl::instance();
+    }
+
+} // end anon namespace
+} // end namespace Catch
+
+#elif defined( CATCH_CONFIG_COLOUR_ANSI ) //////////////////////////////////////
+
+#include <unistd.h>
+
+namespace Catch {
+namespace {
+
+    // use POSIX/ ANSI console terminal codes
+    // Thanks to Adam Strzelecki for original contribution
+    // (http://github.com/nanoant)
+    // https://github.com/philsquared/Catch/pull/131
+    class PosixColourImpl : public IColourImpl {
+    public:
+        virtual void use( Colour::Code _colourCode ) override {
+            switch( _colourCode ) {
+                case Colour::None:
+                case Colour::White:     return setColour( "[0m" );
+                case Colour::Red:       return setColour( "[0;31m" );
+                case Colour::Green:     return setColour( "[0;32m" );
+                case Colour::Blue:      return setColour( "[0;34m" );
+                case Colour::Cyan:      return setColour( "[0;36m" );
+                case Colour::Yellow:    return setColour( "[0;33m" );
+                case Colour::Grey:      return setColour( "[1;30m" );
+
+                case Colour::LightGrey:     return setColour( "[0;37m" );
+                case Colour::BrightRed:     return setColour( "[1;31m" );
+                case Colour::BrightGreen:   return setColour( "[1;32m" );
+                case Colour::BrightWhite:   return setColour( "[1;37m" );
+                case Colour::BrightYellow:  return setColour( "[1;33m" );
+
+                case Colour::Bright: CATCH_INTERNAL_ERROR( "not a colour" );
+                default: CATCH_INTERNAL_ERROR( "Unknown colour requested" );
+            }
+        }
+        static IColourImpl* instance() {
+            static PosixColourImpl s_instance;
+            return &s_instance;
+        }
+
+    private:
+        void setColour( const char* _escapeCode ) {
+            Catch::cout() << '\033' << _escapeCode;
+        }
+    };
+
+    bool useColourOnPlatform() {
+        return
+#ifdef CATCH_PLATFORM_MAC
+            !isDebuggerActive() &&
+#endif
+#if !(defined(__DJGPP__) && defined(__STRICT_ANSI__))
+            isatty(STDOUT_FILENO)
+#else
+            false
+#endif
+            ;
+    }
+    IColourImpl* platformColourInstance() {
+        ErrnoGuard guard;
+        IConfigPtr config = getCurrentContext().getConfig();
+        UseColour::YesOrNo colourMode = config
+            ? config->useColour()
+            : UseColour::Auto;
+        if( colourMode == UseColour::Auto )
+            colourMode = useColourOnPlatform()
+                ? UseColour::Yes
+                : UseColour::No;
+        return colourMode == UseColour::Yes
+            ? PosixColourImpl::instance()
+            : NoColourImpl::instance();
+    }
+
+} // end anon namespace
+} // end namespace Catch
+
+#else  // not Windows or ANSI ///////////////////////////////////////////////
+
+namespace Catch {
+
+    static IColourImpl* platformColourInstance() { return NoColourImpl::instance(); }
+
+} // end namespace Catch
+
+#endif // Windows/ ANSI/ None
+
+namespace Catch {
+
+    Colour::Colour( Code _colourCode ) { use( _colourCode ); }
+    Colour::Colour( Colour&& rhs ) noexcept {
+        m_moved = rhs.m_moved;
+        rhs.m_moved = true;
+    }
+    Colour& Colour::operator=( Colour&& rhs ) noexcept {
+        m_moved = rhs.m_moved;
+        rhs.m_moved  = true;
+        return *this;
+    }
+
+    Colour::~Colour(){ if( !m_moved ) use( None ); }
+
+    void Colour::use( Code _colourCode ) {
+        static IColourImpl* impl = platformColourInstance();
+        impl->use( _colourCode );
+    }
+
+    std::ostream& operator << ( std::ostream& os, Colour const& ) {
+        return os;
+    }
+
+} // end namespace Catch
+
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#endif
+
+// end catch_console_colour.cpp
+// start catch_context.cpp
+
+namespace Catch {
+
+    class Context : public IMutableContext, NonCopyable {
+
+    public: // IContext
+        virtual IResultCapture* getResultCapture() override {
+            return m_resultCapture;
+        }
+        virtual IRunner* getRunner() override {
+            return m_runner;
+        }
+
+        virtual IConfigPtr const& getConfig() const override {
+            return m_config;
+        }
+
+        virtual ~Context() override;
+
+    public: // IMutableContext
+        virtual void setResultCapture( IResultCapture* resultCapture ) override {
+            m_resultCapture = resultCapture;
+        }
+        virtual void setRunner( IRunner* runner ) override {
+            m_runner = runner;
+        }
+        virtual void setConfig( IConfigPtr const& config ) override {
+            m_config = config;
+        }
+
+        friend IMutableContext& getCurrentMutableContext();
+
+    private:
+        IConfigPtr m_config;
+        IRunner* m_runner = nullptr;
+        IResultCapture* m_resultCapture = nullptr;
+    };
+
+    IMutableContext *IMutableContext::currentContext = nullptr;
+
+    void IMutableContext::createContext()
+    {
+        currentContext = new Context();
+    }
+
+    void cleanUpContext() {
+        delete IMutableContext::currentContext;
+        IMutableContext::currentContext = nullptr;
+    }
+    IContext::~IContext() = default;
+    IMutableContext::~IMutableContext() = default;
+    Context::~Context() = default;
+}
+// end catch_context.cpp
+// start catch_debug_console.cpp
+
+// start catch_debug_console.h
+
+#include <string>
+
+namespace Catch {
+    void writeToDebugConsole( std::string const& text );
+}
+
+// end catch_debug_console.h
+#ifdef CATCH_PLATFORM_WINDOWS
+
+    namespace Catch {
+        void writeToDebugConsole( std::string const& text ) {
+            ::OutputDebugStringA( text.c_str() );
+        }
+    }
+
+#else
+
+    namespace Catch {
+        void writeToDebugConsole( std::string const& text ) {
+            // !TBD: Need a version for Mac/ XCode and other IDEs
+            Catch::cout() << text;
+        }
+    }
+
+#endif // Platform
+// end catch_debug_console.cpp
+// start catch_debugger.cpp
+
+#ifdef CATCH_PLATFORM_MAC
+
+#  include <assert.h>
+#  include <stdbool.h>
+#  include <sys/types.h>
+#  include <unistd.h>
+#  include <sys/sysctl.h>
+#  include <cstddef>
+#  include <ostream>
+
+namespace Catch {
+
+        // The following function is taken directly from the following technical note:
+        // http://developer.apple.com/library/mac/#qa/qa2004/qa1361.html
+
+        // Returns true if the current process is being debugged (either
+        // running under the debugger or has a debugger attached post facto).
+        bool isDebuggerActive(){
+
+            int                 mib[4];
+            struct kinfo_proc   info;
+            std::size_t         size;
+
+            // Initialize the flags so that, if sysctl fails for some bizarre
+            // reason, we get a predictable result.
+
+            info.kp_proc.p_flag = 0;
+
+            // Initialize mib, which tells sysctl the info we want, in this case
+            // we're looking for information about a specific process ID.
+
+            mib[0] = CTL_KERN;
+            mib[1] = KERN_PROC;
+            mib[2] = KERN_PROC_PID;
+            mib[3] = getpid();
+
+            // Call sysctl.
+
+            size = sizeof(info);
+            if( sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, nullptr, 0) != 0 ) {
+                Catch::cerr() << "\n** Call to sysctl failed - unable to determine if debugger is active **\n" << std::endl;
+                return false;
+            }
+
+            // We're being debugged if the P_TRACED flag is set.
+
+            return ( (info.kp_proc.p_flag & P_TRACED) != 0 );
+        }
+    } // namespace Catch
+
+#elif defined(CATCH_PLATFORM_LINUX)
+    #include <fstream>
+    #include <string>
+
+    namespace Catch{
+        // The standard POSIX way of detecting a debugger is to attempt to
+        // ptrace() the process, but this needs to be done from a child and not
+        // this process itself to still allow attaching to this process later
+        // if wanted, so is rather heavy. Under Linux we have the PID of the
+        // "debugger" (which doesn't need to be gdb, of course, it could also
+        // be strace, for example) in /proc/$PID/status, so just get it from
+        // there instead.
+        bool isDebuggerActive(){
+            // Libstdc++ has a bug, where std::ifstream sets errno to 0
+            // This way our users can properly assert over errno values
+            ErrnoGuard guard;
+            std::ifstream in("/proc/self/status");
+            for( std::string line; std::getline(in, line); ) {
+                static const int PREFIX_LEN = 11;
+                if( line.compare(0, PREFIX_LEN, "TracerPid:\t") == 0 ) {
+                    // We're traced if the PID is not 0 and no other PID starts
+                    // with 0 digit, so it's enough to check for just a single
+                    // character.
+                    return line.length() > PREFIX_LEN && line[PREFIX_LEN] != '0';
+                }
+            }
+
+            return false;
+        }
+    } // namespace Catch
+#elif defined(_MSC_VER)
+    extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
+    namespace Catch {
+        bool isDebuggerActive() {
+            return IsDebuggerPresent() != 0;
+        }
+    }
+#elif defined(__MINGW32__)
+    extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
+    namespace Catch {
+        bool isDebuggerActive() {
+            return IsDebuggerPresent() != 0;
+        }
+    }
+#else
+    namespace Catch {
+       bool isDebuggerActive() { return false; }
+    }
+#endif // Platform
+// end catch_debugger.cpp
+// start catch_decomposer.cpp
+
+namespace Catch {
+
+    ITransientExpression::~ITransientExpression() = default;
+
+    void formatReconstructedExpression( std::ostream &os, std::string const& lhs, StringRef op, std::string const& rhs ) {
+        if( lhs.size() + rhs.size() < 40 &&
+                lhs.find('\n') == std::string::npos &&
+                rhs.find('\n') == std::string::npos )
+            os << lhs << " " << op << " " << rhs;
+        else
+            os << lhs << "\n" << op << "\n" << rhs;
+    }
+}
+// end catch_decomposer.cpp
+// start catch_enforce.cpp
+
+namespace Catch {
+#if defined(CATCH_CONFIG_DISABLE_EXCEPTIONS) && !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS_CUSTOM_HANDLER)
+    [[noreturn]]
+    void throw_exception(std::exception const& e) {
+        Catch::cerr() << "Catch will terminate because it needed to throw an exception.\n"
+                      << "The message was: " << e.what() << '\n';
+        std::terminate();
+    }
+#endif
+} // namespace Catch;
+// end catch_enforce.cpp
+// start catch_errno_guard.cpp
+
+#include <cerrno>
+
+namespace Catch {
+        ErrnoGuard::ErrnoGuard():m_oldErrno(errno){}
+        ErrnoGuard::~ErrnoGuard() { errno = m_oldErrno; }
+}
+// end catch_errno_guard.cpp
+// start catch_exception_translator_registry.cpp
+
+// start catch_exception_translator_registry.h
+
+#include <vector>
+#include <string>
+#include <memory>
+
+namespace Catch {
+
+    class ExceptionTranslatorRegistry : public IExceptionTranslatorRegistry {
+    public:
+        ~ExceptionTranslatorRegistry();
+        virtual void registerTranslator( const IExceptionTranslator* translator );
+        virtual std::string translateActiveException() const override;
+        std::string tryTranslators() const;
+
+    private:
+        std::vector<std::unique_ptr<IExceptionTranslator const>> m_translators;
+    };
+}
+
+// end catch_exception_translator_registry.h
+#ifdef __OBJC__
+#import "Foundation/Foundation.h"
+#endif
+
+namespace Catch {
+
+    ExceptionTranslatorRegistry::~ExceptionTranslatorRegistry() {
+    }
+
+    void ExceptionTranslatorRegistry::registerTranslator( const IExceptionTranslator* translator ) {
+        m_translators.push_back( std::unique_ptr<const IExceptionTranslator>( translator ) );
+    }
+
+#if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+    std::string ExceptionTranslatorRegistry::translateActiveException() const {
+        try {
+#ifdef __OBJC__
+            // In Objective-C try objective-c exceptions first
+            @try {
+                return tryTranslators();
+            }
+            @catch (NSException *exception) {
+                return Catch::Detail::stringify( [exception description] );
+            }
+#else
+            // Compiling a mixed mode project with MSVC means that CLR
+            // exceptions will be caught in (...) as well. However, these
+            // do not fill-in std::current_exception and thus lead to crash
+            // when attempting rethrow.
+            // /EHa switch also causes structured exceptions to be caught
+            // here, but they fill-in current_exception properly, so
+            // at worst the output should be a little weird, instead of
+            // causing a crash.
+            if (std::current_exception() == nullptr) {
+                return "Non C++ exception. Possibly a CLR exception.";
+            }
+            return tryTranslators();
+#endif
+        }
+        catch( TestFailureException& ) {
+            std::rethrow_exception(std::current_exception());
+        }
+        catch( std::exception& ex ) {
+            return ex.what();
+        }
+        catch( std::string& msg ) {
+            return msg;
+        }
+        catch( const char* msg ) {
+            return msg;
+        }
+        catch(...) {
+            return "Unknown exception";
+        }
+    }
+
+#else // ^^ Exceptions are enabled // Exceptions are disabled vv
+    std::string ExceptionTranslatorRegistry::translateActiveException() const {
+        CATCH_INTERNAL_ERROR("Attempted to translate active exception under CATCH_CONFIG_DISABLE_EXCEPTIONS!");
+    }
+#endif
+
+    std::string ExceptionTranslatorRegistry::tryTranslators() const {
+        if( m_translators.empty() )
+            std::rethrow_exception(std::current_exception());
+        else
+            return m_translators[0]->translate( m_translators.begin()+1, m_translators.end() );
+    }
+}
+// end catch_exception_translator_registry.cpp
+// start catch_fatal_condition.cpp
+
+#if defined(__GNUC__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+#if defined( CATCH_CONFIG_WINDOWS_SEH ) || defined( CATCH_CONFIG_POSIX_SIGNALS )
+
+namespace {
+    // Report the error condition
+    void reportFatal( char const * const message ) {
+        Catch::getCurrentContext().getResultCapture()->handleFatalErrorCondition( message );
+    }
+}
+
+#endif // signals/SEH handling
+
+#if defined( CATCH_CONFIG_WINDOWS_SEH )
+
+namespace Catch {
+    struct SignalDefs { DWORD id; const char* name; };
+
+    // There is no 1-1 mapping between signals and windows exceptions.
+    // Windows can easily distinguish between SO and SigSegV,
+    // but SigInt, SigTerm, etc are handled differently.
+    static SignalDefs signalDefs[] = {
+        { EXCEPTION_ILLEGAL_INSTRUCTION,  "SIGILL - Illegal instruction signal" },
+        { EXCEPTION_STACK_OVERFLOW, "SIGSEGV - Stack overflow" },
+        { EXCEPTION_ACCESS_VIOLATION, "SIGSEGV - Segmentation violation signal" },
+        { EXCEPTION_INT_DIVIDE_BY_ZERO, "Divide by zero error" },
+    };
+
+    LONG CALLBACK FatalConditionHandler::handleVectoredException(PEXCEPTION_POINTERS ExceptionInfo) {
+        for (auto const& def : signalDefs) {
+            if (ExceptionInfo->ExceptionRecord->ExceptionCode == def.id) {
+                reportFatal(def.name);
+            }
+        }
+        // If its not an exception we care about, pass it along.
+        // This stops us from eating debugger breaks etc.
+        return EXCEPTION_CONTINUE_SEARCH;
+    }
+
+    FatalConditionHandler::FatalConditionHandler() {
+        isSet = true;
+        // 32k seems enough for Catch to handle stack overflow,
+        // but the value was found experimentally, so there is no strong guarantee
+        guaranteeSize = 32 * 1024;
+        exceptionHandlerHandle = nullptr;
+        // Register as first handler in current chain
+        exceptionHandlerHandle = AddVectoredExceptionHandler(1, handleVectoredException);
+        // Pass in guarantee size to be filled
+        SetThreadStackGuarantee(&guaranteeSize);
+    }
+
+    void FatalConditionHandler::reset() {
+        if (isSet) {
+            RemoveVectoredExceptionHandler(exceptionHandlerHandle);
+            SetThreadStackGuarantee(&guaranteeSize);
+            exceptionHandlerHandle = nullptr;
+            isSet = false;
+        }
+    }
+
+    FatalConditionHandler::~FatalConditionHandler() {
+        reset();
+    }
+
+bool FatalConditionHandler::isSet = false;
+ULONG FatalConditionHandler::guaranteeSize = 0;
+PVOID FatalConditionHandler::exceptionHandlerHandle = nullptr;
+
+} // namespace Catch
+
+#elif defined( CATCH_CONFIG_POSIX_SIGNALS )
+
+namespace Catch {
+
+    struct SignalDefs {
+        int id;
+        const char* name;
+    };
+
+    // 32kb for the alternate stack seems to be sufficient. However, this value
+    // is experimentally determined, so that's not guaranteed.
+    constexpr static std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
+
+    static SignalDefs signalDefs[] = {
+        { SIGINT,  "SIGINT - Terminal interrupt signal" },
+        { SIGILL,  "SIGILL - Illegal instruction signal" },
+        { SIGFPE,  "SIGFPE - Floating point error signal" },
+        { SIGSEGV, "SIGSEGV - Segmentation violation signal" },
+        { SIGTERM, "SIGTERM - Termination request signal" },
+        { SIGABRT, "SIGABRT - Abort (abnormal termination) signal" }
+    };
+
+    void FatalConditionHandler::handleSignal( int sig ) {
+        char const * name = "<unknown signal>";
+        for (auto const& def : signalDefs) {
+            if (sig == def.id) {
+                name = def.name;
+                break;
+            }
+        }
+        reset();
+        reportFatal(name);
+        raise( sig );
+    }
+
+    FatalConditionHandler::FatalConditionHandler() {
+        isSet = true;
+        stack_t sigStack;
+        sigStack.ss_sp = altStackMem;
+        sigStack.ss_size = sigStackSize;
+        sigStack.ss_flags = 0;
+        sigaltstack(&sigStack, &oldSigStack);
+        struct sigaction sa = { };
+
+        sa.sa_handler = handleSignal;
+        sa.sa_flags = SA_ONSTACK;
+        for (std::size_t i = 0; i < sizeof(signalDefs)/sizeof(SignalDefs); ++i) {
+            sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
+        }
+    }
+
+    FatalConditionHandler::~FatalConditionHandler() {
+        reset();
+    }
+
+    void FatalConditionHandler::reset() {
+        if( isSet ) {
+            // Set signals back to previous values -- hopefully nobody overwrote them in the meantime
+            for( std::size_t i = 0; i < sizeof(signalDefs)/sizeof(SignalDefs); ++i ) {
+                sigaction(signalDefs[i].id, &oldSigActions[i], nullptr);
+            }
+            // Return the old stack
+            sigaltstack(&oldSigStack, nullptr);
+            isSet = false;
+        }
+    }
+
+    bool FatalConditionHandler::isSet = false;
+    struct sigaction FatalConditionHandler::oldSigActions[sizeof(signalDefs)/sizeof(SignalDefs)] = {};
+    stack_t FatalConditionHandler::oldSigStack = {};
+    char FatalConditionHandler::altStackMem[sigStackSize] = {};
+
+} // namespace Catch
+
+#else
+
+namespace Catch {
+    void FatalConditionHandler::reset() {}
+}
+
+#endif // signals/SEH handling
+
+#if defined(__GNUC__)
+#    pragma GCC diagnostic pop
+#endif
+// end catch_fatal_condition.cpp
+// start catch_generators.cpp
+
+// start catch_random_number_generator.h
+
+#include <algorithm>
+#include <random>
+
+namespace Catch {
+
+    struct IConfig;
+
+    std::mt19937& rng();
+    void seedRng( IConfig const& config );
+    unsigned int rngSeed();
+
+}
+
+// end catch_random_number_generator.h
+#include <limits>
+#include <set>
+
+namespace Catch {
+
+IGeneratorTracker::~IGeneratorTracker() {}
+
+namespace Generators {
+
+    GeneratorBase::~GeneratorBase() {}
+
+    std::vector<size_t> randomiseIndices( size_t selectionSize, size_t sourceSize ) {
+
+        assert( selectionSize <= sourceSize );
+        std::vector<size_t> indices;
+        indices.reserve( selectionSize );
+        std::uniform_int_distribution<size_t> uid( 0, sourceSize-1 );
+
+        std::set<size_t> seen;
+        // !TBD: improve this algorithm
+        while( indices.size() < selectionSize ) {
+            auto index = uid( rng() );
+            if( seen.insert( index ).second )
+                indices.push_back( index );
+        }
+        return indices;
+    }
+
+    auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker& {
+        return getResultCapture().acquireGeneratorTracker( lineInfo );
+    }
+
+    template<>
+    auto all<int>() -> Generator<int> {
+        return range( std::numeric_limits<int>::min(), std::numeric_limits<int>::max() );
+    }
+
+} // namespace Generators
+} // namespace Catch
+// end catch_generators.cpp
+// start catch_interfaces_capture.cpp
+
+namespace Catch {
+    IResultCapture::~IResultCapture() = default;
+}
+// end catch_interfaces_capture.cpp
+// start catch_interfaces_config.cpp
+
+namespace Catch {
+    IConfig::~IConfig() = default;
+}
+// end catch_interfaces_config.cpp
+// start catch_interfaces_exception.cpp
+
+namespace Catch {
+    IExceptionTranslator::~IExceptionTranslator() = default;
+    IExceptionTranslatorRegistry::~IExceptionTranslatorRegistry() = default;
+}
+// end catch_interfaces_exception.cpp
+// start catch_interfaces_registry_hub.cpp
+
+namespace Catch {
+    IRegistryHub::~IRegistryHub() = default;
+    IMutableRegistryHub::~IMutableRegistryHub() = default;
+}
+// end catch_interfaces_registry_hub.cpp
+// start catch_interfaces_reporter.cpp
+
+// start catch_reporter_listening.h
+
+namespace Catch {
+
+    class ListeningReporter : public IStreamingReporter {
+        using Reporters = std::vector<IStreamingReporterPtr>;
+        Reporters m_listeners;
+        IStreamingReporterPtr m_reporter = nullptr;
+        ReporterPreferences m_preferences;
+
+    public:
+        ListeningReporter();
+
+        void addListener( IStreamingReporterPtr&& listener );
+        void addReporter( IStreamingReporterPtr&& reporter );
+
+    public: // IStreamingReporter
+
+        ReporterPreferences getPreferences() const override;
+
+        void noMatchingTestCases( std::string const& spec ) override;
+
+        static std::set<Verbosity> getSupportedVerbosities();
+
+        void benchmarkStarting( BenchmarkInfo const& benchmarkInfo ) override;
+        void benchmarkEnded( BenchmarkStats const& benchmarkStats ) override;
+
+        void testRunStarting( TestRunInfo const& testRunInfo ) override;
+        void testGroupStarting( GroupInfo const& groupInfo ) override;
+        void testCaseStarting( TestCaseInfo const& testInfo ) override;
+        void sectionStarting( SectionInfo const& sectionInfo ) override;
+        void assertionStarting( AssertionInfo const& assertionInfo ) override;
+
+        // The return value indicates if the messages buffer should be cleared:
+        bool assertionEnded( AssertionStats const& assertionStats ) override;
+        void sectionEnded( SectionStats const& sectionStats ) override;
+        void testCaseEnded( TestCaseStats const& testCaseStats ) override;
+        void testGroupEnded( TestGroupStats const& testGroupStats ) override;
+        void testRunEnded( TestRunStats const& testRunStats ) override;
+
+        void skipTest( TestCaseInfo const& testInfo ) override;
+        bool isMulti() const override;
+
+    };
+
+} // end namespace Catch
+
+// end catch_reporter_listening.h
+namespace Catch {
+
+    ReporterConfig::ReporterConfig( IConfigPtr const& _fullConfig )
+    :   m_stream( &_fullConfig->stream() ), m_fullConfig( _fullConfig ) {}
+
+    ReporterConfig::ReporterConfig( IConfigPtr const& _fullConfig, std::ostream& _stream )
+    :   m_stream( &_stream ), m_fullConfig( _fullConfig ) {}
+
+    std::ostream& ReporterConfig::stream() const { return *m_stream; }
+    IConfigPtr ReporterConfig::fullConfig() const { return m_fullConfig; }
+
+    TestRunInfo::TestRunInfo( std::string const& _name ) : name( _name ) {}
+
+    GroupInfo::GroupInfo(  std::string const& _name,
+                           std::size_t _groupIndex,
+                           std::size_t _groupsCount )
+    :   name( _name ),
+        groupIndex( _groupIndex ),
+        groupsCounts( _groupsCount )
+    {}
+
+     AssertionStats::AssertionStats( AssertionResult const& _assertionResult,
+                                     std::vector<MessageInfo> const& _infoMessages,
+                                     Totals const& _totals )
+    :   assertionResult( _assertionResult ),
+        infoMessages( _infoMessages ),
+        totals( _totals )
+    {
+        assertionResult.m_resultData.lazyExpression.m_transientExpression = _assertionResult.m_resultData.lazyExpression.m_transientExpression;
+
+        if( assertionResult.hasMessage() ) {
+            // Copy message into messages list.
+            // !TBD This should have been done earlier, somewhere
+            MessageBuilder builder( assertionResult.getTestMacroName(), assertionResult.getSourceInfo(), assertionResult.getResultType() );
+            builder << assertionResult.getMessage();
+            builder.m_info.message = builder.m_stream.str();
+
+            infoMessages.push_back( builder.m_info );
+        }
+    }
+
+     AssertionStats::~AssertionStats() = default;
+
+    SectionStats::SectionStats(  SectionInfo const& _sectionInfo,
+                                 Counts const& _assertions,
+                                 double _durationInSeconds,
+                                 bool _missingAssertions )
+    :   sectionInfo( _sectionInfo ),
+        assertions( _assertions ),
+        durationInSeconds( _durationInSeconds ),
+        missingAssertions( _missingAssertions )
+    {}
+
+    SectionStats::~SectionStats() = default;
+
+    TestCaseStats::TestCaseStats(  TestCaseInfo const& _testInfo,
+                                   Totals const& _totals,
+                                   std::string const& _stdOut,
+                                   std::string const& _stdErr,
+                                   bool _aborting )
+    : testInfo( _testInfo ),
+        totals( _totals ),
+        stdOut( _stdOut ),
+        stdErr( _stdErr ),
+        aborting( _aborting )
+    {}
+
+    TestCaseStats::~TestCaseStats() = default;
+
+    TestGroupStats::TestGroupStats( GroupInfo const& _groupInfo,
+                                    Totals const& _totals,
+                                    bool _aborting )
+    :   groupInfo( _groupInfo ),
+        totals( _totals ),
+        aborting( _aborting )
+    {}
+
+    TestGroupStats::TestGroupStats( GroupInfo const& _groupInfo )
+    :   groupInfo( _groupInfo ),
+        aborting( false )
+    {}
+
+    TestGroupStats::~TestGroupStats() = default;
+
+    TestRunStats::TestRunStats(   TestRunInfo const& _runInfo,
+                    Totals const& _totals,
+                    bool _aborting )
+    :   runInfo( _runInfo ),
+        totals( _totals ),
+        aborting( _aborting )
+    {}
+
+    TestRunStats::~TestRunStats() = default;
+
+    void IStreamingReporter::fatalErrorEncountered( StringRef ) {}
+    bool IStreamingReporter::isMulti() const { return false; }
+
+    IReporterFactory::~IReporterFactory() = default;
+    IReporterRegistry::~IReporterRegistry() = default;
+
+} // end namespace Catch
+// end catch_interfaces_reporter.cpp
+// start catch_interfaces_runner.cpp
+
+namespace Catch {
+    IRunner::~IRunner() = default;
+}
+// end catch_interfaces_runner.cpp
+// start catch_interfaces_testcase.cpp
+
+namespace Catch {
+    ITestInvoker::~ITestInvoker() = default;
+    ITestCaseRegistry::~ITestCaseRegistry() = default;
+}
+// end catch_interfaces_testcase.cpp
+// start catch_leak_detector.cpp
+
+#ifdef CATCH_CONFIG_WINDOWS_CRTDBG
+#include <crtdbg.h>
+
+namespace Catch {
+
+    LeakDetector::LeakDetector() {
+        int flag = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
+        flag |= _CRTDBG_LEAK_CHECK_DF;
+        flag |= _CRTDBG_ALLOC_MEM_DF;
+        _CrtSetDbgFlag(flag);
+        _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+        _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
+        // Change this to leaking allocation's number to break there
+        _CrtSetBreakAlloc(-1);
+    }
+}
+
+#else
+
+    Catch::LeakDetector::LeakDetector() {}
+
+#endif
+
+Catch::LeakDetector::~LeakDetector() {
+    Catch::cleanUp();
+}
+// end catch_leak_detector.cpp
+// start catch_list.cpp
+
+// start catch_list.h
+
+#include <set>
+
+namespace Catch {
+
+    std::size_t listTests( Config const& config );
+
+    std::size_t listTestsNamesOnly( Config const& config );
+
+    struct TagInfo {
+        void add( std::string const& spelling );
+        std::string all() const;
+
+        std::set<std::string> spellings;
+        std::size_t count = 0;
+    };
+
+    std::size_t listTags( Config const& config );
+
+    std::size_t listReporters();
+
+    Option<std::size_t> list( Config const& config );
+
+} // end namespace Catch
+
+// end catch_list.h
+// start catch_text.h
+
+namespace Catch {
+    using namespace clara::TextFlow;
+}
+
+// end catch_text.h
+#include <limits>
+#include <algorithm>
+#include <iomanip>
+
+namespace Catch {
+
+    std::size_t listTests( Config const& config ) {
+        TestSpec testSpec = config.testSpec();
+        if( config.hasTestFilters() )
+            Catch::cout() << "Matching test cases:\n";
+        else {
+            Catch::cout() << "All available test cases:\n";
+        }
+
+        auto matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
+        for( auto const& testCaseInfo : matchedTestCases ) {
+            Colour::Code colour = testCaseInfo.isHidden()
+                ? Colour::SecondaryText
+                : Colour::None;
+            Colour colourGuard( colour );
+
+            Catch::cout() << Column( testCaseInfo.name ).initialIndent( 2 ).indent( 4 ) << "\n";
+            if( config.verbosity() >= Verbosity::High ) {
+                Catch::cout() << Column( Catch::Detail::stringify( testCaseInfo.lineInfo ) ).indent(4) << std::endl;
+                std::string description = testCaseInfo.description;
+                if( description.empty() )
+                    description = "(NO DESCRIPTION)";
+                Catch::cout() << Column( description ).indent(4) << std::endl;
+            }
+            if( !testCaseInfo.tags.empty() )
+                Catch::cout() << Column( testCaseInfo.tagsAsString() ).indent( 6 ) << "\n";
+        }
+
+        if( !config.hasTestFilters() )
+            Catch::cout() << pluralise( matchedTestCases.size(), "test case" ) << '\n' << std::endl;
+        else
+            Catch::cout() << pluralise( matchedTestCases.size(), "matching test case" ) << '\n' << std::endl;
+        return matchedTestCases.size();
+    }
+
+    std::size_t listTestsNamesOnly( Config const& config ) {
+        TestSpec testSpec = config.testSpec();
+        std::size_t matchedTests = 0;
+        std::vector<TestCase> matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
+        for( auto const& testCaseInfo : matchedTestCases ) {
+            matchedTests++;
+            if( startsWith( testCaseInfo.name, '#' ) )
+               Catch::cout() << '"' << testCaseInfo.name << '"';
+            else
+               Catch::cout() << testCaseInfo.name;
+            if ( config.verbosity() >= Verbosity::High )
+                Catch::cout() << "\t@" << testCaseInfo.lineInfo;
+            Catch::cout() << std::endl;
+        }
+        return matchedTests;
+    }
+
+    void TagInfo::add( std::string const& spelling ) {
+        ++count;
+        spellings.insert( spelling );
+    }
+
+    std::string TagInfo::all() const {
+        std::string out;
+        for( auto const& spelling : spellings )
+            out += "[" + spelling + "]";
+        return out;
+    }
+
+    std::size_t listTags( Config const& config ) {
+        TestSpec testSpec = config.testSpec();
+        if( config.hasTestFilters() )
+            Catch::cout() << "Tags for matching test cases:\n";
+        else {
+            Catch::cout() << "All available tags:\n";
+        }
+
+        std::map<std::string, TagInfo> tagCounts;
+
+        std::vector<TestCase> matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
+        for( auto const& testCase : matchedTestCases ) {
+            for( auto const& tagName : testCase.getTestCaseInfo().tags ) {
+                std::string lcaseTagName = toLower( tagName );
+                auto countIt = tagCounts.find( lcaseTagName );
+                if( countIt == tagCounts.end() )
+                    countIt = tagCounts.insert( std::make_pair( lcaseTagName, TagInfo() ) ).first;
+                countIt->second.add( tagName );
+            }
+        }
+
+        for( auto const& tagCount : tagCounts ) {
+            ReusableStringStream rss;
+            rss << "  " << std::setw(2) << tagCount.second.count << "  ";
+            auto str = rss.str();
+            auto wrapper = Column( tagCount.second.all() )
+                                                    .initialIndent( 0 )
+                                                    .indent( str.size() )
+                                                    .width( CATCH_CONFIG_CONSOLE_WIDTH-10 );
+            Catch::cout() << str << wrapper << '\n';
+        }
+        Catch::cout() << pluralise( tagCounts.size(), "tag" ) << '\n' << std::endl;
+        return tagCounts.size();
+    }
+
+    std::size_t listReporters() {
+        Catch::cout() << "Available reporters:\n";
+        IReporterRegistry::FactoryMap const& factories = getRegistryHub().getReporterRegistry().getFactories();
+        std::size_t maxNameLen = 0;
+        for( auto const& factoryKvp : factories )
+            maxNameLen = (std::max)( maxNameLen, factoryKvp.first.size() );
+
+        for( auto const& factoryKvp : factories ) {
+            Catch::cout()
+                    << Column( factoryKvp.first + ":" )
+                            .indent(2)
+                            .width( 5+maxNameLen )
+                    +  Column( factoryKvp.second->getDescription() )
+                            .initialIndent(0)
+                            .indent(2)
+                            .width( CATCH_CONFIG_CONSOLE_WIDTH - maxNameLen-8 )
+                    << "\n";
+        }
+        Catch::cout() << std::endl;
+        return factories.size();
+    }
+
+    Option<std::size_t> list( Config const& config ) {
+        Option<std::size_t> listedCount;
+        if( config.listTests() )
+            listedCount = listedCount.valueOr(0) + listTests( config );
+        if( config.listTestNamesOnly() )
+            listedCount = listedCount.valueOr(0) + listTestsNamesOnly( config );
+        if( config.listTags() )
+            listedCount = listedCount.valueOr(0) + listTags( config );
+        if( config.listReporters() )
+            listedCount = listedCount.valueOr(0) + listReporters();
+        return listedCount;
+    }
+
+} // end namespace Catch
+// end catch_list.cpp
+// start catch_matchers.cpp
+
+namespace Catch {
+namespace Matchers {
+    namespace Impl {
+
+        std::string MatcherUntypedBase::toString() const {
+            if( m_cachedToString.empty() )
+                m_cachedToString = describe();
+            return m_cachedToString;
+        }
+
+        MatcherUntypedBase::~MatcherUntypedBase() = default;
+
+    } // namespace Impl
+} // namespace Matchers
+
+using namespace Matchers;
+using Matchers::Impl::MatcherBase;
+
+} // namespace Catch
+// end catch_matchers.cpp
+// start catch_matchers_floating.cpp
+
+// start catch_polyfills.hpp
+
+namespace Catch {
+    bool isnan(float f);
+    bool isnan(double d);
+}
+
+// end catch_polyfills.hpp
+// start catch_to_string.hpp
+
+#include <string>
+
+namespace Catch {
+    template <typename T>
+    std::string to_string(T const& t) {
+#if defined(CATCH_CONFIG_CPP11_TO_STRING)
+        return std::to_string(t);
+#else
+        ReusableStringStream rss;
+        rss << t;
+        return rss.str();
+#endif
+    }
+} // end namespace Catch
+
+// end catch_to_string.hpp
+#include <cstdlib>
+#include <cstdint>
+#include <cstring>
+
+namespace Catch {
+namespace Matchers {
+namespace Floating {
+enum class FloatingPointKind : uint8_t {
+    Float,
+    Double
+};
+}
+}
+}
+
+namespace {
+
+template <typename T>
+struct Converter;
+
+template <>
+struct Converter<float> {
+    static_assert(sizeof(float) == sizeof(int32_t), "Important ULP matcher assumption violated");
+    Converter(float f) {
+        std::memcpy(&i, &f, sizeof(f));
+    }
+    int32_t i;
+};
+
+template <>
+struct Converter<double> {
+    static_assert(sizeof(double) == sizeof(int64_t), "Important ULP matcher assumption violated");
+    Converter(double d) {
+        std::memcpy(&i, &d, sizeof(d));
+    }
+    int64_t i;
+};
+
+template <typename T>
+auto convert(T t) -> Converter<T> {
+    return Converter<T>(t);
+}
+
+template <typename FP>
+bool almostEqualUlps(FP lhs, FP rhs, int maxUlpDiff) {
+    // Comparison with NaN should always be false.
+    // This way we can rule it out before getting into the ugly details
+    if (Catch::isnan(lhs) || Catch::isnan(rhs)) {
+        return false;
+    }
+
+    auto lc = convert(lhs);
+    auto rc = convert(rhs);
+
+    if ((lc.i < 0) != (rc.i < 0)) {
+        // Potentially we can have +0 and -0
+        return lhs == rhs;
+    }
+
+    auto ulpDiff = std::abs(lc.i - rc.i);
+    return ulpDiff <= maxUlpDiff;
+}
+
+}
+
+namespace Catch {
+namespace Matchers {
+namespace Floating {
+    WithinAbsMatcher::WithinAbsMatcher(double target, double margin)
+        :m_target{ target }, m_margin{ margin } {
+        CATCH_ENFORCE(margin >= 0, "Invalid margin: " << margin << '.'
+            << " Margin has to be non-negative.");
+    }
+
+    // Performs equivalent check of std::fabs(lhs - rhs) <= margin
+    // But without the subtraction to allow for INFINITY in comparison
+    bool WithinAbsMatcher::match(double const& matchee) const {
+        return (matchee + m_margin >= m_target) && (m_target + m_margin >= matchee);
+    }
+
+    std::string WithinAbsMatcher::describe() const {
+        return "is within " + ::Catch::Detail::stringify(m_margin) + " of " + ::Catch::Detail::stringify(m_target);
+    }
+
+    WithinUlpsMatcher::WithinUlpsMatcher(double target, int ulps, FloatingPointKind baseType)
+        :m_target{ target }, m_ulps{ ulps }, m_type{ baseType } {
+        CATCH_ENFORCE(ulps >= 0, "Invalid ULP setting: " << ulps << '.'
+            << " ULPs have to be non-negative.");
+    }
+
+#if defined(__clang__)
+#pragma clang diagnostic push
+// Clang <3.5 reports on the default branch in the switch below
+#pragma clang diagnostic ignored "-Wunreachable-code"
+#endif
+
+    bool WithinUlpsMatcher::match(double const& matchee) const {
+        switch (m_type) {
+        case FloatingPointKind::Float:
+            return almostEqualUlps<float>(static_cast<float>(matchee), static_cast<float>(m_target), m_ulps);
+        case FloatingPointKind::Double:
+            return almostEqualUlps<double>(matchee, m_target, m_ulps);
+        default:
+            CATCH_INTERNAL_ERROR( "Unknown FloatingPointKind value" );
+        }
+    }
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+
+    std::string WithinUlpsMatcher::describe() const {
+        return "is within " + Catch::to_string(m_ulps) + " ULPs of " + ::Catch::Detail::stringify(m_target) + ((m_type == FloatingPointKind::Float)? "f" : "");
+    }
+
+}// namespace Floating
+
+Floating::WithinUlpsMatcher WithinULP(double target, int maxUlpDiff) {
+    return Floating::WithinUlpsMatcher(target, maxUlpDiff, Floating::FloatingPointKind::Double);
+}
+
+Floating::WithinUlpsMatcher WithinULP(float target, int maxUlpDiff) {
+    return Floating::WithinUlpsMatcher(target, maxUlpDiff, Floating::FloatingPointKind::Float);
+}
+
+Floating::WithinAbsMatcher WithinAbs(double target, double margin) {
+    return Floating::WithinAbsMatcher(target, margin);
+}
+
+} // namespace Matchers
+} // namespace Catch
+
+// end catch_matchers_floating.cpp
+// start catch_matchers_generic.cpp
+
+std::string Catch::Matchers::Generic::Detail::finalizeDescription(const std::string& desc) {
+    if (desc.empty()) {
+        return "matches undescribed predicate";
+    } else {
+        return "matches predicate: \"" + desc + '"';
+    }
+}
+// end catch_matchers_generic.cpp
+// start catch_matchers_string.cpp
+
+#include <regex>
+
+namespace Catch {
+namespace Matchers {
+
+    namespace StdString {
+
+        CasedString::CasedString( std::string const& str, CaseSensitive::Choice caseSensitivity )
+        :   m_caseSensitivity( caseSensitivity ),
+            m_str( adjustString( str ) )
+        {}
+        std::string CasedString::adjustString( std::string const& str ) const {
+            return m_caseSensitivity == CaseSensitive::No
+                   ? toLower( str )
+                   : str;
+        }
+        std::string CasedString::caseSensitivitySuffix() const {
+            return m_caseSensitivity == CaseSensitive::No
+                   ? " (case insensitive)"
+                   : std::string();
+        }
+
+        StringMatcherBase::StringMatcherBase( std::string const& operation, CasedString const& comparator )
+        : m_comparator( comparator ),
+          m_operation( operation ) {
+        }
+
+        std::string StringMatcherBase::describe() const {
+            std::string description;
+            description.reserve(5 + m_operation.size() + m_comparator.m_str.size() +
+                                        m_comparator.caseSensitivitySuffix().size());
+            description += m_operation;
+            description += ": \"";
+            description += m_comparator.m_str;
+            description += "\"";
+            description += m_comparator.caseSensitivitySuffix();
+            return description;
+        }
+
+        EqualsMatcher::EqualsMatcher( CasedString const& comparator ) : StringMatcherBase( "equals", comparator ) {}
+
+        bool EqualsMatcher::match( std::string const& source ) const {
+            return m_comparator.adjustString( source ) == m_comparator.m_str;
+        }
+
+        ContainsMatcher::ContainsMatcher( CasedString const& comparator ) : StringMatcherBase( "contains", comparator ) {}
+
+        bool ContainsMatcher::match( std::string const& source ) const {
+            return contains( m_comparator.adjustString( source ), m_comparator.m_str );
+        }
+
+        StartsWithMatcher::StartsWithMatcher( CasedString const& comparator ) : StringMatcherBase( "starts with", comparator ) {}
+
+        bool StartsWithMatcher::match( std::string const& source ) const {
+            return startsWith( m_comparator.adjustString( source ), m_comparator.m_str );
+        }
+
+        EndsWithMatcher::EndsWithMatcher( CasedString const& comparator ) : StringMatcherBase( "ends with", comparator ) {}
+
+        bool EndsWithMatcher::match( std::string const& source ) const {
+            return endsWith( m_comparator.adjustString( source ), m_comparator.m_str );
+        }
+
+        RegexMatcher::RegexMatcher(std::string regex, CaseSensitive::Choice caseSensitivity): m_regex(std::move(regex)), m_caseSensitivity(caseSensitivity) {}
+
+        bool RegexMatcher::match(std::string const& matchee) const {
+            auto flags = std::regex::ECMAScript; // ECMAScript is the default syntax option anyway
+            if (m_caseSensitivity == CaseSensitive::Choice::No) {
+                flags |= std::regex::icase;
+            }
+            auto reg = std::regex(m_regex, flags);
+            return std::regex_match(matchee, reg);
+        }
+
+        std::string RegexMatcher::describe() const {
+            return "matches " + ::Catch::Detail::stringify(m_regex) + ((m_caseSensitivity == CaseSensitive::Choice::Yes)? " case sensitively" : " case insensitively");
+        }
+
+    } // namespace StdString
+
+    StdString::EqualsMatcher Equals( std::string const& str, CaseSensitive::Choice caseSensitivity ) {
+        return StdString::EqualsMatcher( StdString::CasedString( str, caseSensitivity) );
+    }
+    StdString::ContainsMatcher Contains( std::string const& str, CaseSensitive::Choice caseSensitivity ) {
+        return StdString::ContainsMatcher( StdString::CasedString( str, caseSensitivity) );
+    }
+    StdString::EndsWithMatcher EndsWith( std::string const& str, CaseSensitive::Choice caseSensitivity ) {
+        return StdString::EndsWithMatcher( StdString::CasedString( str, caseSensitivity) );
+    }
+    StdString::StartsWithMatcher StartsWith( std::string const& str, CaseSensitive::Choice caseSensitivity ) {
+        return StdString::StartsWithMatcher( StdString::CasedString( str, caseSensitivity) );
+    }
+
+    StdString::RegexMatcher Matches(std::string const& regex, CaseSensitive::Choice caseSensitivity) {
+        return StdString::RegexMatcher(regex, caseSensitivity);
+    }
+
+} // namespace Matchers
+} // namespace Catch
+// end catch_matchers_string.cpp
+// start catch_message.cpp
+
+// start catch_uncaught_exceptions.h
+
+namespace Catch {
+    bool uncaught_exceptions();
+} // end namespace Catch
+
+// end catch_uncaught_exceptions.h
+#include <cassert>
+#include <stack>
+
+namespace Catch {
+
+    MessageInfo::MessageInfo(   StringRef const& _macroName,
+                                SourceLineInfo const& _lineInfo,
+                                ResultWas::OfType _type )
+    :   macroName( _macroName ),
+        lineInfo( _lineInfo ),
+        type( _type ),
+        sequence( ++globalCount )
+    {}
+
+    bool MessageInfo::operator==( MessageInfo const& other ) const {
+        return sequence == other.sequence;
+    }
+
+    bool MessageInfo::operator<( MessageInfo const& other ) const {
+        return sequence < other.sequence;
+    }
+
+    // This may need protecting if threading support is added
+    unsigned int MessageInfo::globalCount = 0;
+
+    ////////////////////////////////////////////////////////////////////////////
+
+    Catch::MessageBuilder::MessageBuilder( StringRef const& macroName,
+                                           SourceLineInfo const& lineInfo,
+                                           ResultWas::OfType type )
+        :m_info(macroName, lineInfo, type) {}
+
+    ////////////////////////////////////////////////////////////////////////////
+
+    ScopedMessage::ScopedMessage( MessageBuilder const& builder )
+    : m_info( builder.m_info )
+    {
+        m_info.message = builder.m_stream.str();
+        getResultCapture().pushScopedMessage( m_info );
+    }
+
+    ScopedMessage::~ScopedMessage() {
+        if ( !uncaught_exceptions() ){
+            getResultCapture().popScopedMessage(m_info);
+        }
+    }
+
+    Capturer::Capturer( StringRef macroName, SourceLineInfo const& lineInfo, ResultWas::OfType resultType, StringRef names ) {
+        auto trimmed = [&] (size_t start, size_t end) {
+            while (names[start] == ',' || isspace(names[start])) {
+                ++start;
+            }
+            while (names[end] == ',' || isspace(names[end])) {
+                --end;
+            }
+            return names.substr(start, end - start + 1);
+        };
+
+        size_t start = 0;
+        std::stack<char> openings;
+        for (size_t pos = 0; pos < names.size(); ++pos) {
+            char c = names[pos];
+            switch (c) {
+            case '[':
+            case '{':
+            case '(':
+            // It is basically impossible to disambiguate between
+            // comparison and start of template args in this context
+//            case '<':
+                openings.push(c);
+                break;
+            case ']':
+            case '}':
+            case ')':
+//           case '>':
+                openings.pop();
+                break;
+            case ',':
+                if (start != pos && openings.size() == 0) {
+                    m_messages.emplace_back(macroName, lineInfo, resultType);
+                    m_messages.back().message = trimmed(start, pos);
+                    m_messages.back().message += " := ";
+                    start = pos;
+                }
+            }
+        }
+        assert(openings.size() == 0 && "Mismatched openings");
+        m_messages.emplace_back(macroName, lineInfo, resultType);
+        m_messages.back().message = trimmed(start, names.size() - 1);
+        m_messages.back().message += " := ";
+    }
+    Capturer::~Capturer() {
+        if ( !uncaught_exceptions() ){
+            assert( m_captured == m_messages.size() );
+            for( size_t i = 0; i < m_captured; ++i  )
+                m_resultCapture.popScopedMessage( m_messages[i] );
+        }
+    }
+
+    void Capturer::captureValue( size_t index, std::string const& value ) {
+        assert( index < m_messages.size() );
+        m_messages[index].message += value;
+        m_resultCapture.pushScopedMessage( m_messages[index] );
+        m_captured++;
+    }
+
+} // end namespace Catch
+// end catch_message.cpp
+// start catch_output_redirect.cpp
+
+// start catch_output_redirect.h
+#ifndef TWOBLUECUBES_CATCH_OUTPUT_REDIRECT_H
+#define TWOBLUECUBES_CATCH_OUTPUT_REDIRECT_H
+
+#include <cstdio>
+#include <iosfwd>
+#include <string>
+
+namespace Catch {
+
+    class RedirectedStream {
+        std::ostream& m_originalStream;
+        std::ostream& m_redirectionStream;
+        std::streambuf* m_prevBuf;
+
+    public:
+        RedirectedStream( std::ostream& originalStream, std::ostream& redirectionStream );
+        ~RedirectedStream();
+    };
+
+    class RedirectedStdOut {
+        ReusableStringStream m_rss;
+        RedirectedStream m_cout;
+    public:
+        RedirectedStdOut();
+        auto str() const -> std::string;
+    };
+
+    // StdErr has two constituent streams in C++, std::cerr and std::clog
+    // This means that we need to redirect 2 streams into 1 to keep proper
+    // order of writes
+    class RedirectedStdErr {
+        ReusableStringStream m_rss;
+        RedirectedStream m_cerr;
+        RedirectedStream m_clog;
+    public:
+        RedirectedStdErr();
+        auto str() const -> std::string;
+    };
+
+#if defined(CATCH_CONFIG_NEW_CAPTURE)
+
+    // Windows's implementation of std::tmpfile is terrible (it tries
+    // to create a file inside system folder, thus requiring elevated
+    // privileges for the binary), so we have to use tmpnam(_s) and
+    // create the file ourselves there.
+    class TempFile {
+    public:
+        TempFile(TempFile const&) = delete;
+        TempFile& operator=(TempFile const&) = delete;
+        TempFile(TempFile&&) = delete;
+        TempFile& operator=(TempFile&&) = delete;
+
+        TempFile();
+        ~TempFile();
+
+        std::FILE* getFile();
+        std::string getContents();
+
+    private:
+        std::FILE* m_file = nullptr;
+    #if defined(_MSC_VER)
+        char m_buffer[L_tmpnam] = { 0 };
+    #endif
+    };
+
+    class OutputRedirect {
+    public:
+        OutputRedirect(OutputRedirect const&) = delete;
+        OutputRedirect& operator=(OutputRedirect const&) = delete;
+        OutputRedirect(OutputRedirect&&) = delete;
+        OutputRedirect& operator=(OutputRedirect&&) = delete;
+
+        OutputRedirect(std::string& stdout_dest, std::string& stderr_dest);
+        ~OutputRedirect();
+
+    private:
+        int m_originalStdout = -1;
+        int m_originalStderr = -1;
+        TempFile m_stdoutFile;
+        TempFile m_stderrFile;
+        std::string& m_stdoutDest;
+        std::string& m_stderrDest;
+    };
+
+#endif
+
+} // end namespace Catch
+
+#endif // TWOBLUECUBES_CATCH_OUTPUT_REDIRECT_H
+// end catch_output_redirect.h
+#include <cstdio>
+#include <cstring>
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+
+#if defined(CATCH_CONFIG_NEW_CAPTURE)
+    #if defined(_MSC_VER)
+    #include <io.h>      //_dup and _dup2
+    #define dup _dup
+    #define dup2 _dup2
+    #define fileno _fileno
+    #else
+    #include <unistd.h>  // dup and dup2
+    #endif
+#endif
+
+namespace Catch {
+
+    RedirectedStream::RedirectedStream( std::ostream& originalStream, std::ostream& redirectionStream )
+    :   m_originalStream( originalStream ),
+        m_redirectionStream( redirectionStream ),
+        m_prevBuf( m_originalStream.rdbuf() )
+    {
+        m_originalStream.rdbuf( m_redirectionStream.rdbuf() );
+    }
+
+    RedirectedStream::~RedirectedStream() {
+        m_originalStream.rdbuf( m_prevBuf );
+    }
+
+    RedirectedStdOut::RedirectedStdOut() : m_cout( Catch::cout(), m_rss.get() ) {}
+    auto RedirectedStdOut::str() const -> std::string { return m_rss.str(); }
+
+    RedirectedStdErr::RedirectedStdErr()
+    :   m_cerr( Catch::cerr(), m_rss.get() ),
+        m_clog( Catch::clog(), m_rss.get() )
+    {}
+    auto RedirectedStdErr::str() const -> std::string { return m_rss.str(); }
+
+#if defined(CATCH_CONFIG_NEW_CAPTURE)
+
+#if defined(_MSC_VER)
+    TempFile::TempFile() {
+        if (tmpnam_s(m_buffer)) {
+            CATCH_RUNTIME_ERROR("Could not get a temp filename");
+        }
+        if (fopen_s(&m_file, m_buffer, "w")) {
+            char buffer[100];
+            if (strerror_s(buffer, errno)) {
+                CATCH_RUNTIME_ERROR("Could not translate errno to a string");
+            }
+            CATCH_RUNTIME_ERROR("Coul dnot open the temp file: '" << m_buffer << "' because: " << buffer);
+        }
+    }
+#else
+    TempFile::TempFile() {
+        m_file = std::tmpfile();
+        if (!m_file) {
+            CATCH_RUNTIME_ERROR("Could not create a temp file.");
+        }
+    }
+
+#endif
+
+    TempFile::~TempFile() {
+         // TBD: What to do about errors here?
+         std::fclose(m_file);
+         // We manually create the file on Windows only, on Linux
+         // it will be autodeleted
+#if defined(_MSC_VER)
+         std::remove(m_buffer);
+#endif
+    }
+
+    FILE* TempFile::getFile() {
+        return m_file;
+    }
+
+    std::string TempFile::getContents() {
+        std::stringstream sstr;
+        char buffer[100] = {};
+        std::rewind(m_file);
+        while (std::fgets(buffer, sizeof(buffer), m_file)) {
+            sstr << buffer;
+        }
+        return sstr.str();
+    }
+
+    OutputRedirect::OutputRedirect(std::string& stdout_dest, std::string& stderr_dest) :
+        m_originalStdout(dup(1)),
+        m_originalStderr(dup(2)),
+        m_stdoutDest(stdout_dest),
+        m_stderrDest(stderr_dest) {
+        dup2(fileno(m_stdoutFile.getFile()), 1);
+        dup2(fileno(m_stderrFile.getFile()), 2);
+    }
+
+    OutputRedirect::~OutputRedirect() {
+        Catch::cout() << std::flush;
+        fflush(stdout);
+        // Since we support overriding these streams, we flush cerr
+        // even though std::cerr is unbuffered
+        Catch::cerr() << std::flush;
+        Catch::clog() << std::flush;
+        fflush(stderr);
+
+        dup2(m_originalStdout, 1);
+        dup2(m_originalStderr, 2);
+
+        m_stdoutDest += m_stdoutFile.getContents();
+        m_stderrDest += m_stderrFile.getContents();
+    }
+
+#endif // CATCH_CONFIG_NEW_CAPTURE
+
+} // namespace Catch
+
+#if defined(CATCH_CONFIG_NEW_CAPTURE)
+    #if defined(_MSC_VER)
+    #undef dup
+    #undef dup2
+    #undef fileno
+    #endif
+#endif
+// end catch_output_redirect.cpp
+// start catch_polyfills.cpp
+
+#include <cmath>
+
+namespace Catch {
+
+#if !defined(CATCH_CONFIG_POLYFILL_ISNAN)
+    bool isnan(float f) {
+        return std::isnan(f);
+    }
+    bool isnan(double d) {
+        return std::isnan(d);
+    }
+#else
+    // For now we only use this for embarcadero
+    bool isnan(float f) {
+        return std::_isnan(f);
+    }
+    bool isnan(double d) {
+        return std::_isnan(d);
+    }
+#endif
+
+} // end namespace Catch
+// end catch_polyfills.cpp
+// start catch_random_number_generator.cpp
+
+namespace Catch {
+
+    std::mt19937& rng() {
+        static std::mt19937 s_rng;
+        return s_rng;
+    }
+
+    void seedRng( IConfig const& config ) {
+        if( config.rngSeed() != 0 ) {
+            std::srand( config.rngSeed() );
+            rng().seed( config.rngSeed() );
+        }
+    }
+
+    unsigned int rngSeed() {
+        return getCurrentContext().getConfig()->rngSeed();
+    }
+}
+// end catch_random_number_generator.cpp
+// start catch_registry_hub.cpp
+
+// start catch_test_case_registry_impl.h
+
+#include <vector>
+#include <set>
+#include <algorithm>
+#include <ios>
+
+namespace Catch {
+
+    class TestCase;
+    struct IConfig;
+
+    std::vector<TestCase> sortTests( IConfig const& config, std::vector<TestCase> const& unsortedTestCases );
+    bool matchTest( TestCase const& testCase, TestSpec const& testSpec, IConfig const& config );
+
+    void enforceNoDuplicateTestCases( std::vector<TestCase> const& functions );
+
+    std::vector<TestCase> filterTests( std::vector<TestCase> const& testCases, TestSpec const& testSpec, IConfig const& config );
+    std::vector<TestCase> const& getAllTestCasesSorted( IConfig const& config );
+
+    class TestRegistry : public ITestCaseRegistry {
+    public:
+        virtual ~TestRegistry() = default;
+
+        virtual void registerTest( TestCase const& testCase );
+
+        std::vector<TestCase> const& getAllTests() const override;
+        std::vector<TestCase> const& getAllTestsSorted( IConfig const& config ) const override;
+
+    private:
+        std::vector<TestCase> m_functions;
+        mutable RunTests::InWhatOrder m_currentSortOrder = RunTests::InDeclarationOrder;
+        mutable std::vector<TestCase> m_sortedFunctions;
+        std::size_t m_unnamedCount = 0;
+        std::ios_base::Init m_ostreamInit; // Forces cout/ cerr to be initialised
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+
+    class TestInvokerAsFunction : public ITestInvoker {
+        void(*m_testAsFunction)();
+    public:
+        TestInvokerAsFunction( void(*testAsFunction)() ) noexcept;
+
+        void invoke() const override;
+    };
+
+    std::string extractClassName( StringRef const& classOrQualifiedMethodName );
+
+    ///////////////////////////////////////////////////////////////////////////
+
+} // end namespace Catch
+
+// end catch_test_case_registry_impl.h
+// start catch_reporter_registry.h
+
+#include <map>
+
+namespace Catch {
+
+    class ReporterRegistry : public IReporterRegistry {
+
+    public:
+
+        ~ReporterRegistry() override;
+
+        IStreamingReporterPtr create( std::string const& name, IConfigPtr const& config ) const override;
+
+        void registerReporter( std::string const& name, IReporterFactoryPtr const& factory );
+        void registerListener( IReporterFactoryPtr const& factory );
+
+        FactoryMap const& getFactories() const override;
+        Listeners const& getListeners() const override;
+
+    private:
+        FactoryMap m_factories;
+        Listeners m_listeners;
+    };
+}
+
+// end catch_reporter_registry.h
+// start catch_tag_alias_registry.h
+
+// start catch_tag_alias.h
+
+#include <string>
+
+namespace Catch {
+
+    struct TagAlias {
+        TagAlias(std::string const& _tag, SourceLineInfo _lineInfo);
+
+        std::string tag;
+        SourceLineInfo lineInfo;
+    };
+
+} // end namespace Catch
+
+// end catch_tag_alias.h
+#include <map>
+
+namespace Catch {
+
+    class TagAliasRegistry : public ITagAliasRegistry {
+    public:
+        ~TagAliasRegistry() override;
+        TagAlias const* find( std::string const& alias ) const override;
+        std::string expandAliases( std::string const& unexpandedTestSpec ) const override;
+        void add( std::string const& alias, std::string const& tag, SourceLineInfo const& lineInfo );
+
+    private:
+        std::map<std::string, TagAlias> m_registry;
+    };
+
+} // end namespace Catch
+
+// end catch_tag_alias_registry.h
+// start catch_startup_exception_registry.h
+
+#include <vector>
+#include <exception>
+
+namespace Catch {
+
+    class StartupExceptionRegistry {
+    public:
+        void add(std::exception_ptr const& exception) noexcept;
+        std::vector<std::exception_ptr> const& getExceptions() const noexcept;
+    private:
+        std::vector<std::exception_ptr> m_exceptions;
+    };
+
+} // end namespace Catch
+
+// end catch_startup_exception_registry.h
+// start catch_singletons.hpp
+
+namespace Catch {
+
+    struct ISingleton {
+        virtual ~ISingleton();
+    };
+
+    void addSingleton( ISingleton* singleton );
+    void cleanupSingletons();
+
+    template<typename SingletonImplT, typename InterfaceT = SingletonImplT, typename MutableInterfaceT = InterfaceT>
+    class Singleton : SingletonImplT, public ISingleton {
+
+        static auto getInternal() -> Singleton* {
+            static Singleton* s_instance = nullptr;
+            if( !s_instance ) {
+                s_instance = new Singleton;
+                addSingleton( s_instance );
+            }
+            return s_instance;
+        }
+
+    public:
+        static auto get() -> InterfaceT const& {
+            return *getInternal();
+        }
+        static auto getMutable() -> MutableInterfaceT& {
+            return *getInternal();
+        }
+    };
+
+} // namespace Catch
+
+// end catch_singletons.hpp
+namespace Catch {
+
+    namespace {
+
+        class RegistryHub : public IRegistryHub, public IMutableRegistryHub,
+                            private NonCopyable {
+
+        public: // IRegistryHub
+            RegistryHub() = default;
+            IReporterRegistry const& getReporterRegistry() const override {
+                return m_reporterRegistry;
+            }
+            ITestCaseRegistry const& getTestCaseRegistry() const override {
+                return m_testCaseRegistry;
+            }
+            IExceptionTranslatorRegistry const& getExceptionTranslatorRegistry() const override {
+                return m_exceptionTranslatorRegistry;
+            }
+            ITagAliasRegistry const& getTagAliasRegistry() const override {
+                return m_tagAliasRegistry;
+            }
+            StartupExceptionRegistry const& getStartupExceptionRegistry() const override {
+                return m_exceptionRegistry;
+            }
+
+        public: // IMutableRegistryHub
+            void registerReporter( std::string const& name, IReporterFactoryPtr const& factory ) override {
+                m_reporterRegistry.registerReporter( name, factory );
+            }
+            void registerListener( IReporterFactoryPtr const& factory ) override {
+                m_reporterRegistry.registerListener( factory );
+            }
+            void registerTest( TestCase const& testInfo ) override {
+                m_testCaseRegistry.registerTest( testInfo );
+            }
+            void registerTranslator( const IExceptionTranslator* translator ) override {
+                m_exceptionTranslatorRegistry.registerTranslator( translator );
+            }
+            void registerTagAlias( std::string const& alias, std::string const& tag, SourceLineInfo const& lineInfo ) override {
+                m_tagAliasRegistry.add( alias, tag, lineInfo );
+            }
+            void registerStartupException() noexcept override {
+                m_exceptionRegistry.add(std::current_exception());
+            }
+
+        private:
+            TestRegistry m_testCaseRegistry;
+            ReporterRegistry m_reporterRegistry;
+            ExceptionTranslatorRegistry m_exceptionTranslatorRegistry;
+            TagAliasRegistry m_tagAliasRegistry;
+            StartupExceptionRegistry m_exceptionRegistry;
+        };
+    }
+
+    using RegistryHubSingleton = Singleton<RegistryHub, IRegistryHub, IMutableRegistryHub>;
+
+    IRegistryHub const& getRegistryHub() {
+        return RegistryHubSingleton::get();
+    }
+    IMutableRegistryHub& getMutableRegistryHub() {
+        return RegistryHubSingleton::getMutable();
+    }
+    void cleanUp() {
+        cleanupSingletons();
+        cleanUpContext();
+    }
+    std::string translateActiveException() {
+        return getRegistryHub().getExceptionTranslatorRegistry().translateActiveException();
+    }
+
+} // end namespace Catch
+// end catch_registry_hub.cpp
+// start catch_reporter_registry.cpp
+
+namespace Catch {
+
+    ReporterRegistry::~ReporterRegistry() = default;
+
+    IStreamingReporterPtr ReporterRegistry::create( std::string const& name, IConfigPtr const& config ) const {
+        auto it =  m_factories.find( name );
+        if( it == m_factories.end() )
+            return nullptr;
+        return it->second->create( ReporterConfig( config ) );
+    }
+
+    void ReporterRegistry::registerReporter( std::string const& name, IReporterFactoryPtr const& factory ) {
+        m_factories.emplace(name, factory);
+    }
+    void ReporterRegistry::registerListener( IReporterFactoryPtr const& factory ) {
+        m_listeners.push_back( factory );
+    }
+
+    IReporterRegistry::FactoryMap const& ReporterRegistry::getFactories() const {
+        return m_factories;
+    }
+    IReporterRegistry::Listeners const& ReporterRegistry::getListeners() const {
+        return m_listeners;
+    }
+
+}
+// end catch_reporter_registry.cpp
+// start catch_result_type.cpp
+
+namespace Catch {
+
+    bool isOk( ResultWas::OfType resultType ) {
+        return ( resultType & ResultWas::FailureBit ) == 0;
+    }
+    bool isJustInfo( int flags ) {
+        return flags == ResultWas::Info;
+    }
+
+    ResultDisposition::Flags operator | ( ResultDisposition::Flags lhs, ResultDisposition::Flags rhs ) {
+        return static_cast<ResultDisposition::Flags>( static_cast<int>( lhs ) | static_cast<int>( rhs ) );
+    }
+
+    bool shouldContinueOnFailure( int flags )    { return ( flags & ResultDisposition::ContinueOnFailure ) != 0; }
+    bool shouldSuppressFailure( int flags )      { return ( flags & ResultDisposition::SuppressFail ) != 0; }
+
+} // end namespace Catch
+// end catch_result_type.cpp
+// start catch_run_context.cpp
+
+#include <cassert>
+#include <algorithm>
+#include <sstream>
+
+namespace Catch {
+
+    namespace Generators {
+        struct GeneratorTracker : TestCaseTracking::TrackerBase, IGeneratorTracker {
+            size_t m_index = static_cast<size_t>( -1 );
+            GeneratorBasePtr m_generator;
+
+            GeneratorTracker( TestCaseTracking::NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent )
+            :   TrackerBase( nameAndLocation, ctx, parent )
+            {}
+            ~GeneratorTracker();
+
+            static GeneratorTracker& acquire( TrackerContext& ctx, TestCaseTracking::NameAndLocation const& nameAndLocation ) {
+                std::shared_ptr<GeneratorTracker> tracker;
+
+                ITracker& currentTracker = ctx.currentTracker();
+                if( TestCaseTracking::ITrackerPtr childTracker = currentTracker.findChild( nameAndLocation ) ) {
+                    assert( childTracker );
+                    assert( childTracker->isIndexTracker() );
+                    tracker = std::static_pointer_cast<GeneratorTracker>( childTracker );
+                }
+                else {
+                    tracker = std::make_shared<GeneratorTracker>( nameAndLocation, ctx, &currentTracker );
+                    currentTracker.addChild( tracker );
+                }
+
+                if( !ctx.completedCycle() && !tracker->isComplete() ) {
+                    if( tracker->m_runState != ExecutingChildren && tracker->m_runState != NeedsAnotherRun )
+                        tracker->moveNext();
+                    tracker->open();
+                }
+
+                return *tracker;
+            }
+
+            void moveNext() {
+                m_index++;
+                m_children.clear();
+            }
+
+            // TrackerBase interface
+            bool isIndexTracker() const override { return true; }
+            auto hasGenerator() const -> bool override {
+                return !!m_generator;
+            }
+            void close() override {
+                TrackerBase::close();
+                if( m_runState == CompletedSuccessfully && m_index < m_generator->size()-1 )
+                    m_runState = Executing;
+            }
+
+            // IGeneratorTracker interface
+            auto getGenerator() const -> GeneratorBasePtr const& override {
+                return m_generator;
+            }
+            void setGenerator( GeneratorBasePtr&& generator ) override {
+                m_generator = std::move( generator );
+            }
+            auto getIndex() const -> size_t override {
+                return m_index;
+            }
+        };
+        GeneratorTracker::~GeneratorTracker() {}
+    }
+
+    RunContext::RunContext(IConfigPtr const& _config, IStreamingReporterPtr&& reporter)
+    :   m_runInfo(_config->name()),
+        m_context(getCurrentMutableContext()),
+        m_config(_config),
+        m_reporter(std::move(reporter)),
+        m_lastAssertionInfo{ StringRef(), SourceLineInfo("",0), StringRef(), ResultDisposition::Normal },
+        m_includeSuccessfulResults( m_config->includeSuccessfulResults() || m_reporter->getPreferences().shouldReportAllAssertions )
+    {
+        m_context.setRunner(this);
+        m_context.setConfig(m_config);
+        m_context.setResultCapture(this);
+        m_reporter->testRunStarting(m_runInfo);
+    }
+
+    RunContext::~RunContext() {
+        m_reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, aborting()));
+    }
+
+    void RunContext::testGroupStarting(std::string const& testSpec, std::size_t groupIndex, std::size_t groupsCount) {
+        m_reporter->testGroupStarting(GroupInfo(testSpec, groupIndex, groupsCount));
+    }
+
+    void RunContext::testGroupEnded(std::string const& testSpec, Totals const& totals, std::size_t groupIndex, std::size_t groupsCount) {
+        m_reporter->testGroupEnded(TestGroupStats(GroupInfo(testSpec, groupIndex, groupsCount), totals, aborting()));
+    }
+
+    Totals RunContext::runTest(TestCase const& testCase) {
+        Totals prevTotals = m_totals;
+
+        std::string redirectedCout;
+        std::string redirectedCerr;
+
+        auto const& testInfo = testCase.getTestCaseInfo();
+
+        m_reporter->testCaseStarting(testInfo);
+
+        m_activeTestCase = &testCase;
+
+        ITracker& rootTracker = m_trackerContext.startRun();
+        assert(rootTracker.isSectionTracker());
+        static_cast<SectionTracker&>(rootTracker).addInitialFilters(m_config->getSectionsToRun());
+        do {
+            m_trackerContext.startCycle();
+            m_testCaseTracker = &SectionTracker::acquire(m_trackerContext, TestCaseTracking::NameAndLocation(testInfo.name, testInfo.lineInfo));
+            runCurrentTest(redirectedCout, redirectedCerr);
+        } while (!m_testCaseTracker->isSuccessfullyCompleted() && !aborting());
+
+        Totals deltaTotals = m_totals.delta(prevTotals);
+        if (testInfo.expectedToFail() && deltaTotals.testCases.passed > 0) {
+            deltaTotals.assertions.failed++;
+            deltaTotals.testCases.passed--;
+            deltaTotals.testCases.failed++;
+        }
+        m_totals.testCases += deltaTotals.testCases;
+        m_reporter->testCaseEnded(TestCaseStats(testInfo,
+                                  deltaTotals,
+                                  redirectedCout,
+                                  redirectedCerr,
+                                  aborting()));
+
+        m_activeTestCase = nullptr;
+        m_testCaseTracker = nullptr;
+
+        return deltaTotals;
+    }
+
+    IConfigPtr RunContext::config() const {
+        return m_config;
+    }
+
+    IStreamingReporter& RunContext::reporter() const {
+        return *m_reporter;
+    }
+
+    void RunContext::assertionEnded(AssertionResult const & result) {
+        if (result.getResultType() == ResultWas::Ok) {
+            m_totals.assertions.passed++;
+            m_lastAssertionPassed = true;
+        } else if (!result.isOk()) {
+            m_lastAssertionPassed = false;
+            if( m_activeTestCase->getTestCaseInfo().okToFail() )
+                m_totals.assertions.failedButOk++;
+            else
+                m_totals.assertions.failed++;
+        }
+        else {
+            m_lastAssertionPassed = true;
+        }
+
+        // We have no use for the return value (whether messages should be cleared), because messages were made scoped
+        // and should be let to clear themselves out.
+        static_cast<void>(m_reporter->assertionEnded(AssertionStats(result, m_messages, m_totals)));
+
+        // Reset working state
+        resetAssertionInfo();
+        m_lastResult = result;
+    }
+    void RunContext::resetAssertionInfo() {
+        m_lastAssertionInfo.macroName = StringRef();
+        m_lastAssertionInfo.capturedExpression = "{Unknown expression after the reported line}"_sr;
+    }
+
+    bool RunContext::sectionStarted(SectionInfo const & sectionInfo, Counts & assertions) {
+        ITracker& sectionTracker = SectionTracker::acquire(m_trackerContext, TestCaseTracking::NameAndLocation(sectionInfo.name, sectionInfo.lineInfo));
+        if (!sectionTracker.isOpen())
+            return false;
+        m_activeSections.push_back(&sectionTracker);
+
+        m_lastAssertionInfo.lineInfo = sectionInfo.lineInfo;
+
+        m_reporter->sectionStarting(sectionInfo);
+
+        assertions = m_totals.assertions;
+
+        return true;
+    }
+    auto RunContext::acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker& {
+        using namespace Generators;
+        GeneratorTracker& tracker = GeneratorTracker::acquire( m_trackerContext, TestCaseTracking::NameAndLocation( "generator", lineInfo ) );
+        assert( tracker.isOpen() );
+        m_lastAssertionInfo.lineInfo = lineInfo;
+        return tracker;
+    }
+
+    bool RunContext::testForMissingAssertions(Counts& assertions) {
+        if (assertions.total() != 0)
+            return false;
+        if (!m_config->warnAboutMissingAssertions())
+            return false;
+        if (m_trackerContext.currentTracker().hasChildren())
+            return false;
+        m_totals.assertions.failed++;
+        assertions.failed++;
+        return true;
+    }
+
+    void RunContext::sectionEnded(SectionEndInfo const & endInfo) {
+        Counts assertions = m_totals.assertions - endInfo.prevAssertions;
+        bool missingAssertions = testForMissingAssertions(assertions);
+
+        if (!m_activeSections.empty()) {
+            m_activeSections.back()->close();
+            m_activeSections.pop_back();
+        }
+
+        m_reporter->sectionEnded(SectionStats(endInfo.sectionInfo, assertions, endInfo.durationInSeconds, missingAssertions));
+        m_messages.clear();
+    }
+
+    void RunContext::sectionEndedEarly(SectionEndInfo const & endInfo) {
+        if (m_unfinishedSections.empty())
+            m_activeSections.back()->fail();
+        else
+            m_activeSections.back()->close();
+        m_activeSections.pop_back();
+
+        m_unfinishedSections.push_back(endInfo);
+    }
+    void RunContext::benchmarkStarting( BenchmarkInfo const& info ) {
+        m_reporter->benchmarkStarting( info );
+    }
+    void RunContext::benchmarkEnded( BenchmarkStats const& stats ) {
+        m_reporter->benchmarkEnded( stats );
+    }
+
+    void RunContext::pushScopedMessage(MessageInfo const & message) {
+        m_messages.push_back(message);
+    }
+
+    void RunContext::popScopedMessage(MessageInfo const & message) {
+        m_messages.erase(std::remove(m_messages.begin(), m_messages.end(), message), m_messages.end());
+    }
+
+    std::string RunContext::getCurrentTestName() const {
+        return m_activeTestCase
+            ? m_activeTestCase->getTestCaseInfo().name
+            : std::string();
+    }
+
+    const AssertionResult * RunContext::getLastResult() const {
+        return &(*m_lastResult);
+    }
+
+    void RunContext::exceptionEarlyReported() {
+        m_shouldReportUnexpected = false;
+    }
+
+    void RunContext::handleFatalErrorCondition( StringRef message ) {
+        // First notify reporter that bad things happened
+        m_reporter->fatalErrorEncountered(message);
+
+        // Don't rebuild the result -- the stringification itself can cause more fatal errors
+        // Instead, fake a result data.
+        AssertionResultData tempResult( ResultWas::FatalErrorCondition, { false } );
+        tempResult.message = message;
+        AssertionResult result(m_lastAssertionInfo, tempResult);
+
+        assertionEnded(result);
+
+        handleUnfinishedSections();
+
+        // Recreate section for test case (as we will lose the one that was in scope)
+        auto const& testCaseInfo = m_activeTestCase->getTestCaseInfo();
+        SectionInfo testCaseSection(testCaseInfo.lineInfo, testCaseInfo.name);
+
+        Counts assertions;
+        assertions.failed = 1;
+        SectionStats testCaseSectionStats(testCaseSection, assertions, 0, false);
+        m_reporter->sectionEnded(testCaseSectionStats);
+
+        auto const& testInfo = m_activeTestCase->getTestCaseInfo();
+
+        Totals deltaTotals;
+        deltaTotals.testCases.failed = 1;
+        deltaTotals.assertions.failed = 1;
+        m_reporter->testCaseEnded(TestCaseStats(testInfo,
+                                  deltaTotals,
+                                  std::string(),
+                                  std::string(),
+                                  false));
+        m_totals.testCases.failed++;
+        testGroupEnded(std::string(), m_totals, 1, 1);
+        m_reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, false));
+    }
+
+    bool RunContext::lastAssertionPassed() {
+         return m_lastAssertionPassed;
+    }
+
+    void RunContext::assertionPassed() {
+        m_lastAssertionPassed = true;
+        ++m_totals.assertions.passed;
+        resetAssertionInfo();
+    }
+
+    bool RunContext::aborting() const {
+        return m_totals.assertions.failed >= static_cast<std::size_t>(m_config->abortAfter());
+    }
+
+    void RunContext::runCurrentTest(std::string & redirectedCout, std::string & redirectedCerr) {
+        auto const& testCaseInfo = m_activeTestCase->getTestCaseInfo();
+        SectionInfo testCaseSection(testCaseInfo.lineInfo, testCaseInfo.name);
+        m_reporter->sectionStarting(testCaseSection);
+        Counts prevAssertions = m_totals.assertions;
+        double duration = 0;
+        m_shouldReportUnexpected = true;
+        m_lastAssertionInfo = { "TEST_CASE"_sr, testCaseInfo.lineInfo, StringRef(), ResultDisposition::Normal };
+
+        seedRng(*m_config);
+
+        Timer timer;
+        CATCH_TRY {
+            if (m_reporter->getPreferences().shouldRedirectStdOut) {
+#if !defined(CATCH_CONFIG_EXPERIMENTAL_REDIRECT)
+                RedirectedStdOut redirectedStdOut;
+                RedirectedStdErr redirectedStdErr;
+
+                timer.start();
+                invokeActiveTestCase();
+                redirectedCout += redirectedStdOut.str();
+                redirectedCerr += redirectedStdErr.str();
+#else
+                OutputRedirect r(redirectedCout, redirectedCerr);
+                timer.start();
+                invokeActiveTestCase();
+#endif
+            } else {
+                timer.start();
+                invokeActiveTestCase();
+            }
+            duration = timer.getElapsedSeconds();
+        } CATCH_CATCH_ANON (TestFailureException&) {
+            // This just means the test was aborted due to failure
+        } CATCH_CATCH_ALL {
+            // Under CATCH_CONFIG_FAST_COMPILE, unexpected exceptions under REQUIRE assertions
+            // are reported without translation at the point of origin.
+            if( m_shouldReportUnexpected ) {
+                AssertionReaction dummyReaction;
+                handleUnexpectedInflightException( m_lastAssertionInfo, translateActiveException(), dummyReaction );
+            }
+        }
+        Counts assertions = m_totals.assertions - prevAssertions;
+        bool missingAssertions = testForMissingAssertions(assertions);
+
+        m_testCaseTracker->close();
+        handleUnfinishedSections();
+        m_messages.clear();
+
+        SectionStats testCaseSectionStats(testCaseSection, assertions, duration, missingAssertions);
+        m_reporter->sectionEnded(testCaseSectionStats);
+    }
+
+    void RunContext::invokeActiveTestCase() {
+        FatalConditionHandler fatalConditionHandler; // Handle signals
+        m_activeTestCase->invoke();
+        fatalConditionHandler.reset();
+    }
+
+    void RunContext::handleUnfinishedSections() {
+        // If sections ended prematurely due to an exception we stored their
+        // infos here so we can tear them down outside the unwind process.
+        for (auto it = m_unfinishedSections.rbegin(),
+             itEnd = m_unfinishedSections.rend();
+             it != itEnd;
+             ++it)
+            sectionEnded(*it);
+        m_unfinishedSections.clear();
+    }
+
+    void RunContext::handleExpr(
+        AssertionInfo const& info,
+        ITransientExpression const& expr,
+        AssertionReaction& reaction
+    ) {
+        m_reporter->assertionStarting( info );
+
+        bool negated = isFalseTest( info.resultDisposition );
+        bool result = expr.getResult() != negated;
+
+        if( result ) {
+            if (!m_includeSuccessfulResults) {
+                assertionPassed();
+            }
+            else {
+                reportExpr(info, ResultWas::Ok, &expr, negated);
+            }
+        }
+        else {
+            reportExpr(info, ResultWas::ExpressionFailed, &expr, negated );
+            populateReaction( reaction );
+        }
+    }
+    void RunContext::reportExpr(
+            AssertionInfo const &info,
+            ResultWas::OfType resultType,
+            ITransientExpression const *expr,
+            bool negated ) {
+
+        m_lastAssertionInfo = info;
+        AssertionResultData data( resultType, LazyExpression( negated ) );
+
+        AssertionResult assertionResult{ info, data };
+        assertionResult.m_resultData.lazyExpression.m_transientExpression = expr;
+
+        assertionEnded( assertionResult );
+    }
+
+    void RunContext::handleMessage(
+            AssertionInfo const& info,
+            ResultWas::OfType resultType,
+            StringRef const& message,
+            AssertionReaction& reaction
+    ) {
+        m_reporter->assertionStarting( info );
+
+        m_lastAssertionInfo = info;
+
+        AssertionResultData data( resultType, LazyExpression( false ) );
+        data.message = message;
+        AssertionResult assertionResult{ m_lastAssertionInfo, data };
+        assertionEnded( assertionResult );
+        if( !assertionResult.isOk() )
+            populateReaction( reaction );
+    }
+    void RunContext::handleUnexpectedExceptionNotThrown(
+            AssertionInfo const& info,
+            AssertionReaction& reaction
+    ) {
+        handleNonExpr(info, Catch::ResultWas::DidntThrowException, reaction);
+    }
+
+    void RunContext::handleUnexpectedInflightException(
+            AssertionInfo const& info,
+            std::string const& message,
+            AssertionReaction& reaction
+    ) {
+        m_lastAssertionInfo = info;
+
+        AssertionResultData data( ResultWas::ThrewException, LazyExpression( false ) );
+        data.message = message;
+        AssertionResult assertionResult{ info, data };
+        assertionEnded( assertionResult );
+        populateReaction( reaction );
+    }
+
+    void RunContext::populateReaction( AssertionReaction& reaction ) {
+        reaction.shouldDebugBreak = m_config->shouldDebugBreak();
+        reaction.shouldThrow = aborting() || (m_lastAssertionInfo.resultDisposition & ResultDisposition::Normal);
+    }
+
+    void RunContext::handleIncomplete(
+            AssertionInfo const& info
+    ) {
+        m_lastAssertionInfo = info;
+
+        AssertionResultData data( ResultWas::ThrewException, LazyExpression( false ) );
+        data.message = "Exception translation was disabled by CATCH_CONFIG_FAST_COMPILE";
+        AssertionResult assertionResult{ info, data };
+        assertionEnded( assertionResult );
+    }
+    void RunContext::handleNonExpr(
+            AssertionInfo const &info,
+            ResultWas::OfType resultType,
+            AssertionReaction &reaction
+    ) {
+        m_lastAssertionInfo = info;
+
+        AssertionResultData data( resultType, LazyExpression( false ) );
+        AssertionResult assertionResult{ info, data };
+        assertionEnded( assertionResult );
+
+        if( !assertionResult.isOk() )
+            populateReaction( reaction );
+    }
+
+    IResultCapture& getResultCapture() {
+        if (auto* capture = getCurrentContext().getResultCapture())
+            return *capture;
+        else
+            CATCH_INTERNAL_ERROR("No result capture instance");
+    }
+}
+// end catch_run_context.cpp
+// start catch_section.cpp
+
+namespace Catch {
+
+    Section::Section( SectionInfo const& info )
+    :   m_info( info ),
+        m_sectionIncluded( getResultCapture().sectionStarted( m_info, m_assertions ) )
+    {
+        m_timer.start();
+    }
+
+    Section::~Section() {
+        if( m_sectionIncluded ) {
+            SectionEndInfo endInfo{ m_info, m_assertions, m_timer.getElapsedSeconds() };
+            if( uncaught_exceptions() )
+                getResultCapture().sectionEndedEarly( endInfo );
+            else
+                getResultCapture().sectionEnded( endInfo );
+        }
+    }
+
+    // This indicates whether the section should be executed or not
+    Section::operator bool() const {
+        return m_sectionIncluded;
+    }
+
+} // end namespace Catch
+// end catch_section.cpp
+// start catch_section_info.cpp
+
+namespace Catch {
+
+    SectionInfo::SectionInfo
+        (   SourceLineInfo const& _lineInfo,
+            std::string const& _name )
+    :   name( _name ),
+        lineInfo( _lineInfo )
+    {}
+
+} // end namespace Catch
+// end catch_section_info.cpp
+// start catch_session.cpp
+
+// start catch_session.h
+
+#include <memory>
+
+namespace Catch {
+
+    class Session : NonCopyable {
+    public:
+
+        Session();
+        ~Session() override;
+
+        void showHelp() const;
+        void libIdentify();
+
+        int applyCommandLine( int argc, char const * const * argv );
+    #if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(UNICODE)
+        int applyCommandLine( int argc, wchar_t const * const * argv );
+    #endif
+
+        void useConfigData( ConfigData const& configData );
+
+        template<typename CharT>
+        int run(int argc, CharT const * const argv[]) {
+            if (m_startupExceptions)
+                return 1;
+            int returnCode = applyCommandLine(argc, argv);
+            if (returnCode == 0)
+                returnCode = run();
+            return returnCode;
+        }
+
+        int run();
+
+        clara::Parser const& cli() const;
+        void cli( clara::Parser const& newParser );
+        ConfigData& configData();
+        Config& config();
+    private:
+        int runInternal();
+
+        clara::Parser m_cli;
+        ConfigData m_configData;
+        std::shared_ptr<Config> m_config;
+        bool m_startupExceptions = false;
+    };
+
+} // end namespace Catch
+
+// end catch_session.h
+// start catch_version.h
+
+#include <iosfwd>
+
+namespace Catch {
+
+    // Versioning information
+    struct Version {
+        Version( Version const& ) = delete;
+        Version& operator=( Version const& ) = delete;
+        Version(    unsigned int _majorVersion,
+                    unsigned int _minorVersion,
+                    unsigned int _patchNumber,
+                    char const * const _branchName,
+                    unsigned int _buildNumber );
+
+        unsigned int const majorVersion;
+        unsigned int const minorVersion;
+        unsigned int const patchNumber;
+
+        // buildNumber is only used if branchName is not null
+        char const * const branchName;
+        unsigned int const buildNumber;
+
+        friend std::ostream& operator << ( std::ostream& os, Version const& version );
+    };
+
+    Version const& libraryVersion();
+}
+
+// end catch_version.h
+#include <cstdlib>
+#include <iomanip>
+
+namespace Catch {
+
+    namespace {
+        const int MaxExitCode = 255;
+
+        IStreamingReporterPtr createReporter(std::string const& reporterName, IConfigPtr const& config) {
+            auto reporter = Catch::getRegistryHub().getReporterRegistry().create(reporterName, config);
+            CATCH_ENFORCE(reporter, "No reporter registered with name: '" << reporterName << "'");
+
+            return reporter;
+        }
+
+        IStreamingReporterPtr makeReporter(std::shared_ptr<Config> const& config) {
+            if (Catch::getRegistryHub().getReporterRegistry().getListeners().empty()) {
+                return createReporter(config->getReporterName(), config);
+            }
+
+            auto multi = std::unique_ptr<ListeningReporter>(new ListeningReporter);
+
+            auto const& listeners = Catch::getRegistryHub().getReporterRegistry().getListeners();
+            for (auto const& listener : listeners) {
+                multi->addListener(listener->create(Catch::ReporterConfig(config)));
+            }
+            multi->addReporter(createReporter(config->getReporterName(), config));
+            return std::move(multi);
+        }
+
+        Catch::Totals runTests(std::shared_ptr<Config> const& config) {
+            auto reporter = makeReporter(config);
+
+            RunContext context(config, std::move(reporter));
+
+            Totals totals;
+
+            context.testGroupStarting(config->name(), 1, 1);
+
+            TestSpec testSpec = config->testSpec();
+
+            auto const& allTestCases = getAllTestCasesSorted(*config);
+            for (auto const& testCase : allTestCases) {
+                if (!context.aborting() && matchTest(testCase, testSpec, *config))
+                    totals += context.runTest(testCase);
+                else
+                    context.reporter().skipTest(testCase);
+            }
+
+            if (config->warnAboutNoTests() && totals.testCases.total() == 0) {
+                ReusableStringStream testConfig;
+
+                bool first = true;
+                for (const auto& input : config->getTestsOrTags()) {
+                    if (!first) { testConfig << ' '; }
+                    first = false;
+                    testConfig << input;
+                }
+
+                context.reporter().noMatchingTestCases(testConfig.str());
+                totals.error = -1;
+            }
+
+            context.testGroupEnded(config->name(), totals, 1, 1);
+            return totals;
+        }
+
+        void applyFilenamesAsTags(Catch::IConfig const& config) {
+            auto& tests = const_cast<std::vector<TestCase>&>(getAllTestCasesSorted(config));
+            for (auto& testCase : tests) {
+                auto tags = testCase.tags;
+
+                std::string filename = testCase.lineInfo.file;
+                auto lastSlash = filename.find_last_of("\\/");
+                if (lastSlash != std::string::npos) {
+                    filename.erase(0, lastSlash);
+                    filename[0] = '#';
+                }
+
+                auto lastDot = filename.find_last_of('.');
+                if (lastDot != std::string::npos) {
+                    filename.erase(lastDot);
+                }
+
+                tags.push_back(std::move(filename));
+                setTags(testCase, tags);
+            }
+        }
+
+    } // anon namespace
+
+    Session::Session() {
+        static bool alreadyInstantiated = false;
+        if( alreadyInstantiated ) {
+            CATCH_TRY { CATCH_INTERNAL_ERROR( "Only one instance of Catch::Session can ever be used" ); }
+            CATCH_CATCH_ALL { getMutableRegistryHub().registerStartupException(); }
+        }
+
+        // There cannot be exceptions at startup in no-exception mode.
+#if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+        const auto& exceptions = getRegistryHub().getStartupExceptionRegistry().getExceptions();
+        if ( !exceptions.empty() ) {
+            m_startupExceptions = true;
+            Colour colourGuard( Colour::Red );
+            Catch::cerr() << "Errors occurred during startup!" << '\n';
+            // iterate over all exceptions and notify user
+            for ( const auto& ex_ptr : exceptions ) {
+                try {
+                    std::rethrow_exception(ex_ptr);
+                } catch ( std::exception const& ex ) {
+                    Catch::cerr() << Column( ex.what() ).indent(2) << '\n';
+                }
+            }
+        }
+#endif
+
+        alreadyInstantiated = true;
+        m_cli = makeCommandLineParser( m_configData );
+    }
+    Session::~Session() {
+        Catch::cleanUp();
+    }
+
+    void Session::showHelp() const {
+        Catch::cout()
+                << "\nCatch v" << libraryVersion() << "\n"
+                << m_cli << std::endl
+                << "For more detailed usage please see the project docs\n" << std::endl;
+    }
+    void Session::libIdentify() {
+        Catch::cout()
+                << std::left << std::setw(16) << "description: " << "A Catch test executable\n"
+                << std::left << std::setw(16) << "category: " << "testframework\n"
+                << std::left << std::setw(16) << "framework: " << "Catch Test\n"
+                << std::left << std::setw(16) << "version: " << libraryVersion() << std::endl;
+    }
+
+    int Session::applyCommandLine( int argc, char const * const * argv ) {
+        if( m_startupExceptions )
+            return 1;
+
+        auto result = m_cli.parse( clara::Args( argc, argv ) );
+        if( !result ) {
+            Catch::cerr()
+                << Colour( Colour::Red )
+                << "\nError(s) in input:\n"
+                << Column( result.errorMessage() ).indent( 2 )
+                << "\n\n";
+            Catch::cerr() << "Run with -? for usage\n" << std::endl;
+            return MaxExitCode;
+        }
+
+        if( m_configData.showHelp )
+            showHelp();
+        if( m_configData.libIdentify )
+            libIdentify();
+        m_config.reset();
+        return 0;
+    }
+
+#if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(UNICODE)
+    int Session::applyCommandLine( int argc, wchar_t const * const * argv ) {
+
+        char **utf8Argv = new char *[ argc ];
+
+        for ( int i = 0; i < argc; ++i ) {
+            int bufSize = WideCharToMultiByte( CP_UTF8, 0, argv[i], -1, NULL, 0, NULL, NULL );
+
+            utf8Argv[ i ] = new char[ bufSize ];
+
+            WideCharToMultiByte( CP_UTF8, 0, argv[i], -1, utf8Argv[i], bufSize, NULL, NULL );
+        }
+
+        int returnCode = applyCommandLine( argc, utf8Argv );
+
+        for ( int i = 0; i < argc; ++i )
+            delete [] utf8Argv[ i ];
+
+        delete [] utf8Argv;
+
+        return returnCode;
+    }
+#endif
+
+    void Session::useConfigData( ConfigData const& configData ) {
+        m_configData = configData;
+        m_config.reset();
+    }
+
+    int Session::run() {
+        if( ( m_configData.waitForKeypress & WaitForKeypress::BeforeStart ) != 0 ) {
+            Catch::cout() << "...waiting for enter/ return before starting" << std::endl;
+            static_cast<void>(std::getchar());
+        }
+        int exitCode = runInternal();
+        if( ( m_configData.waitForKeypress & WaitForKeypress::BeforeExit ) != 0 ) {
+            Catch::cout() << "...waiting for enter/ return before exiting, with code: " << exitCode << std::endl;
+            static_cast<void>(std::getchar());
+        }
+        return exitCode;
+    }
+
+    clara::Parser const& Session::cli() const {
+        return m_cli;
+    }
+    void Session::cli( clara::Parser const& newParser ) {
+        m_cli = newParser;
+    }
+    ConfigData& Session::configData() {
+        return m_configData;
+    }
+    Config& Session::config() {
+        if( !m_config )
+            m_config = std::make_shared<Config>( m_configData );
+        return *m_config;
+    }
+
+    int Session::runInternal() {
+        if( m_startupExceptions )
+            return 1;
+
+        if (m_configData.showHelp || m_configData.libIdentify) {
+            return 0;
+        }
+
+        CATCH_TRY {
+            config(); // Force config to be constructed
+
+            seedRng( *m_config );
+
+            if( m_configData.filenamesAsTags )
+                applyFilenamesAsTags( *m_config );
+
+            // Handle list request
+            if( Option<std::size_t> listed = list( config() ) )
+                return static_cast<int>( *listed );
+
+            auto totals = runTests( m_config );
+            // Note that on unices only the lower 8 bits are usually used, clamping
+            // the return value to 255 prevents false negative when some multiple
+            // of 256 tests has failed
+            return (std::min) (MaxExitCode, (std::max) (totals.error, static_cast<int>(totals.assertions.failed)));
+        }
+#if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
+        catch( std::exception& ex ) {
+            Catch::cerr() << ex.what() << std::endl;
+            return MaxExitCode;
+        }
+#endif
+    }
+
+} // end namespace Catch
+// end catch_session.cpp
+// start catch_singletons.cpp
+
+#include <vector>
+
+namespace Catch {
+
+    namespace {
+        static auto getSingletons() -> std::vector<ISingleton*>*& {
+            static std::vector<ISingleton*>* g_singletons = nullptr;
+            if( !g_singletons )
+                g_singletons = new std::vector<ISingleton*>();
+            return g_singletons;
+        }
+    }
+
+    ISingleton::~ISingleton() {}
+
+    void addSingleton(ISingleton* singleton ) {
+        getSingletons()->push_back( singleton );
+    }
+    void cleanupSingletons() {
+        auto& singletons = getSingletons();
+        for( auto singleton : *singletons )
+            delete singleton;
+        delete singletons;
+        singletons = nullptr;
+    }
+
+} // namespace Catch
+// end catch_singletons.cpp
+// start catch_startup_exception_registry.cpp
+
+namespace Catch {
+void StartupExceptionRegistry::add( std::exception_ptr const& exception ) noexcept {
+        CATCH_TRY {
+            m_exceptions.push_back(exception);
+        } CATCH_CATCH_ALL {
+            // If we run out of memory during start-up there's really not a lot more we can do about it
+            std::terminate();
+        }
+    }
+
+    std::vector<std::exception_ptr> const& StartupExceptionRegistry::getExceptions() const noexcept {
+        return m_exceptions;
+    }
+
+} // end namespace Catch
+// end catch_startup_exception_registry.cpp
+// start catch_stream.cpp
+
+#include <cstdio>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+#include <memory>
+
+namespace Catch {
+
+    Catch::IStream::~IStream() = default;
+
+    namespace detail { namespace {
+        template<typename WriterF, std::size_t bufferSize=256>
+        class StreamBufImpl : public std::streambuf {
+            char data[bufferSize];
+            WriterF m_writer;
+
+        public:
+            StreamBufImpl() {
+                setp( data, data + sizeof(data) );
+            }
+
+            ~StreamBufImpl() noexcept {
+                StreamBufImpl::sync();
+            }
+
+        private:
+            int overflow( int c ) override {
+                sync();
+
+                if( c != EOF ) {
+                    if( pbase() == epptr() )
+                        m_writer( std::string( 1, static_cast<char>( c ) ) );
+                    else
+                        sputc( static_cast<char>( c ) );
+                }
+                return 0;
+            }
+
+            int sync() override {
+                if( pbase() != pptr() ) {
+                    m_writer( std::string( pbase(), static_cast<std::string::size_type>( pptr() - pbase() ) ) );
+                    setp( pbase(), epptr() );
+                }
+                return 0;
+            }
+        };
+
+        ///////////////////////////////////////////////////////////////////////////
+
+        struct OutputDebugWriter {
+
+            void operator()( std::string const&str ) {
+                writeToDebugConsole( str );
+            }
+        };
+
+        ///////////////////////////////////////////////////////////////////////////
+
+        class FileStream : public IStream {
+            mutable std::ofstream m_ofs;
+        public:
+            FileStream( StringRef filename ) {
+                m_ofs.open( filename.c_str() );
+                CATCH_ENFORCE( !m_ofs.fail(), "Unable to open file: '" << filename << "'" );
+            }
+            ~FileStream() override = default;
+        public: // IStream
+            std::ostream& stream() const override {
+                return m_ofs;
+            }
+        };
+
+        ///////////////////////////////////////////////////////////////////////////
+
+        class CoutStream : public IStream {
+            mutable std::ostream m_os;
+        public:
+            // Store the streambuf from cout up-front because
+            // cout may get redirected when running tests
+            CoutStream() : m_os( Catch::cout().rdbuf() ) {}
+            ~CoutStream() override = default;
+
+        public: // IStream
+            std::ostream& stream() const override { return m_os; }
+        };
+
+        ///////////////////////////////////////////////////////////////////////////
+
+        class DebugOutStream : public IStream {
+            std::unique_ptr<StreamBufImpl<OutputDebugWriter>> m_streamBuf;
+            mutable std::ostream m_os;
+        public:
+            DebugOutStream()
+            :   m_streamBuf( new StreamBufImpl<OutputDebugWriter>() ),
+                m_os( m_streamBuf.get() )
+            {}
+
+            ~DebugOutStream() override = default;
+
+        public: // IStream
+            std::ostream& stream() const override { return m_os; }
+        };
+
+    }} // namespace anon::detail
+
+    ///////////////////////////////////////////////////////////////////////////
+
+    auto makeStream( StringRef const &filename ) -> IStream const* {
+        if( filename.empty() )
+            return new detail::CoutStream();
+        else if( filename[0] == '%' ) {
+            if( filename == "%debug" )
+                return new detail::DebugOutStream();
+            else
+                CATCH_ERROR( "Unrecognised stream: '" << filename << "'" );
+        }
+        else
+            return new detail::FileStream( filename );
+    }
+
+    // This class encapsulates the idea of a pool of ostringstreams that can be reused.
+    struct StringStreams {
+        std::vector<std::unique_ptr<std::ostringstream>> m_streams;
+        std::vector<std::size_t> m_unused;
+        std::ostringstream m_referenceStream; // Used for copy state/ flags from
+
+        auto add() -> std::size_t {
+            if( m_unused.empty() ) {
+                m_streams.push_back( std::unique_ptr<std::ostringstream>( new std::ostringstream ) );
+                return m_streams.size()-1;
+            }
+            else {
+                auto index = m_unused.back();
+                m_unused.pop_back();
+                return index;
+            }
+        }
+
+        void release( std::size_t index ) {
+            m_streams[index]->copyfmt( m_referenceStream ); // Restore initial flags and other state
+            m_unused.push_back(index);
+        }
+    };
+
+    ReusableStringStream::ReusableStringStream()
+    :   m_index( Singleton<StringStreams>::getMutable().add() ),
+        m_oss( Singleton<StringStreams>::getMutable().m_streams[m_index].get() )
+    {}
+
+    ReusableStringStream::~ReusableStringStream() {
+        static_cast<std::ostringstream*>( m_oss )->str("");
+        m_oss->clear();
+        Singleton<StringStreams>::getMutable().release( m_index );
+    }
+
+    auto ReusableStringStream::str() const -> std::string {
+        return static_cast<std::ostringstream*>( m_oss )->str();
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+
+#ifndef CATCH_CONFIG_NOSTDOUT // If you #define this you must implement these functions
+    std::ostream& cout() { return std::cout; }
+    std::ostream& cerr() { return std::cerr; }
+    std::ostream& clog() { return std::clog; }
+#endif
+}
+// end catch_stream.cpp
+// start catch_string_manip.cpp
+
+#include <algorithm>
+#include <ostream>
+#include <cstring>
+#include <cctype>
+
+namespace Catch {
+
+    namespace {
+        char toLowerCh(char c) {
+            return static_cast<char>( std::tolower( c ) );
+        }
+    }
+
+    bool startsWith( std::string const& s, std::string const& prefix ) {
+        return s.size() >= prefix.size() && std::equal(prefix.begin(), prefix.end(), s.begin());
+    }
+    bool startsWith( std::string const& s, char prefix ) {
+        return !s.empty() && s[0] == prefix;
+    }
+    bool endsWith( std::string const& s, std::string const& suffix ) {
+        return s.size() >= suffix.size() && std::equal(suffix.rbegin(), suffix.rend(), s.rbegin());
+    }
+    bool endsWith( std::string const& s, char suffix ) {
+        return !s.empty() && s[s.size()-1] == suffix;
+    }
+    bool contains( std::string const& s, std::string const& infix ) {
+        return s.find( infix ) != std::string::npos;
+    }
+    void toLowerInPlace( std::string& s ) {
+        std::transform( s.begin(), s.end(), s.begin(), toLowerCh );
+    }
+    std::string toLower( std::string const& s ) {
+        std::string lc = s;
+        toLowerInPlace( lc );
+        return lc;
+    }
+    std::string trim( std::string const& str ) {
+        static char const* whitespaceChars = "\n\r\t ";
+        std::string::size_type start = str.find_first_not_of( whitespaceChars );
+        std::string::size_type end = str.find_last_not_of( whitespaceChars );
+
+        return start != std::string::npos ? str.substr( start, 1+end-start ) : std::string();
+    }
+
+    bool replaceInPlace( std::string& str, std::string const& replaceThis, std::string const& withThis ) {
+        bool replaced = false;
+        std::size_t i = str.find( replaceThis );
+        while( i != std::string::npos ) {
+            replaced = true;
+            str = str.substr( 0, i ) + withThis + str.substr( i+replaceThis.size() );
+            if( i < str.size()-withThis.size() )
+                i = str.find( replaceThis, i+withThis.size() );
+            else
+                i = std::string::npos;
+        }
+        return replaced;
+    }
+
+    pluralise::pluralise( std::size_t count, std::string const& label )
+    :   m_count( count ),
+        m_label( label )
+    {}
+
+    std::ostream& operator << ( std::ostream& os, pluralise const& pluraliser ) {
+        os << pluraliser.m_count << ' ' << pluraliser.m_label;
+        if( pluraliser.m_count != 1 )
+            os << 's';
+        return os;
+    }
+
+}
+// end catch_string_manip.cpp
+// start catch_stringref.cpp
+
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wexit-time-destructors"
+#endif
+
+#include <ostream>
+#include <cstring>
+#include <cstdint>
+
+namespace {
+    const uint32_t byte_2_lead = 0xC0;
+    const uint32_t byte_3_lead = 0xE0;
+    const uint32_t byte_4_lead = 0xF0;
+}
+
+namespace Catch {
+    StringRef::StringRef( char const* rawChars ) noexcept
+    : StringRef( rawChars, static_cast<StringRef::size_type>(std::strlen(rawChars) ) )
+    {}
+
+    StringRef::operator std::string() const {
+        return std::string( m_start, m_size );
+    }
+
+    void StringRef::swap( StringRef& other ) noexcept {
+        std::swap( m_start, other.m_start );
+        std::swap( m_size, other.m_size );
+        std::swap( m_data, other.m_data );
+    }
+
+    auto StringRef::c_str() const -> char const* {
+        if( isSubstring() )
+           const_cast<StringRef*>( this )->takeOwnership();
+        return m_start;
+    }
+    auto StringRef::currentData() const noexcept -> char const* {
+        return m_start;
+    }
+
+    auto StringRef::isOwned() const noexcept -> bool {
+        return m_data != nullptr;
+    }
+    auto StringRef::isSubstring() const noexcept -> bool {
+        return m_start[m_size] != '\0';
+    }
+
+    void StringRef::takeOwnership() {
+        if( !isOwned() ) {
+            m_data = new char[m_size+1];
+            memcpy( m_data, m_start, m_size );
+            m_data[m_size] = '\0';
+            m_start = m_data;
+        }
+    }
+    auto StringRef::substr( size_type start, size_type size ) const noexcept -> StringRef {
+        if( start < m_size )
+            return StringRef( m_start+start, size );
+        else
+            return StringRef();
+    }
+    auto StringRef::operator == ( StringRef const& other ) const noexcept -> bool {
+        return
+            size() == other.size() &&
+            (std::strncmp( m_start, other.m_start, size() ) == 0);
+    }
+    auto StringRef::operator != ( StringRef const& other ) const noexcept -> bool {
+        return !operator==( other );
+    }
+
+    auto StringRef::operator[](size_type index) const noexcept -> char {
+        return m_start[index];
+    }
+
+    auto StringRef::numberOfCharacters() const noexcept -> size_type {
+        size_type noChars = m_size;
+        // Make adjustments for uft encodings
+        for( size_type i=0; i < m_size; ++i ) {
+            char c = m_start[i];
+            if( ( c & byte_2_lead ) == byte_2_lead ) {
+                noChars--;
+                if (( c & byte_3_lead ) == byte_3_lead )
+                    noChars--;
+                if( ( c & byte_4_lead ) == byte_4_lead )
+                    noChars--;
+            }
+        }
+        return noChars;
+    }
+
+    auto operator + ( StringRef const& lhs, StringRef const& rhs ) -> std::string {
+        std::string str;
+        str.reserve( lhs.size() + rhs.size() );
+        str += lhs;
+        str += rhs;
+        return str;
+    }
+    auto operator + ( StringRef const& lhs, const char* rhs ) -> std::string {
+        return std::string( lhs ) + std::string( rhs );
+    }
+    auto operator + ( char const* lhs, StringRef const& rhs ) -> std::string {
+        return std::string( lhs ) + std::string( rhs );
+    }
+
+    auto operator << ( std::ostream& os, StringRef const& str ) -> std::ostream& {
+        return os.write(str.currentData(), str.size());
+    }
+
+    auto operator+=( std::string& lhs, StringRef const& rhs ) -> std::string& {
+        lhs.append(rhs.currentData(), rhs.size());
+        return lhs;
+    }
+
+} // namespace Catch
+
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#endif
+// end catch_stringref.cpp
+// start catch_tag_alias.cpp
+
+namespace Catch {
+    TagAlias::TagAlias(std::string const & _tag, SourceLineInfo _lineInfo): tag(_tag), lineInfo(_lineInfo) {}
+}
+// end catch_tag_alias.cpp
+// start catch_tag_alias_autoregistrar.cpp
+
+namespace Catch {
+
+    RegistrarForTagAliases::RegistrarForTagAliases(char const* alias, char const* tag, SourceLineInfo const& lineInfo) {
+        CATCH_TRY {
+            getMutableRegistryHub().registerTagAlias(alias, tag, lineInfo);
+        } CATCH_CATCH_ALL {
+            // Do not throw when constructing global objects, instead register the exception to be processed later
+            getMutableRegistryHub().registerStartupException();
+        }
+    }
+
+}
+// end catch_tag_alias_autoregistrar.cpp
+// start catch_tag_alias_registry.cpp
+
+#include <sstream>
+
+namespace Catch {
+
+    TagAliasRegistry::~TagAliasRegistry() {}
+
+    TagAlias const* TagAliasRegistry::find( std::string const& alias ) const {
+        auto it = m_registry.find( alias );
+        if( it != m_registry.end() )
+            return &(it->second);
+        else
+            return nullptr;
+    }
+
+    std::string TagAliasRegistry::expandAliases( std::string const& unexpandedTestSpec ) const {
+        std::string expandedTestSpec = unexpandedTestSpec;
+        for( auto const& registryKvp : m_registry ) {
+            std::size_t pos = expandedTestSpec.find( registryKvp.first );
+            if( pos != std::string::npos ) {
+                expandedTestSpec =  expandedTestSpec.substr( 0, pos ) +
+                                    registryKvp.second.tag +
+                                    expandedTestSpec.substr( pos + registryKvp.first.size() );
+            }
+        }
+        return expandedTestSpec;
+    }
+
+    void TagAliasRegistry::add( std::string const& alias, std::string const& tag, SourceLineInfo const& lineInfo ) {
+        CATCH_ENFORCE( startsWith(alias, "[@") && endsWith(alias, ']'),
+                      "error: tag alias, '" << alias << "' is not of the form [@alias name].\n" << lineInfo );
+
+        CATCH_ENFORCE( m_registry.insert(std::make_pair(alias, TagAlias(tag, lineInfo))).second,
+                      "error: tag alias, '" << alias << "' already registered.\n"
+                      << "\tFirst seen at: " << find(alias)->lineInfo << "\n"
+                      << "\tRedefined at: " << lineInfo );
+    }
+
+    ITagAliasRegistry::~ITagAliasRegistry() {}
+
+    ITagAliasRegistry const& ITagAliasRegistry::get() {
+        return getRegistryHub().getTagAliasRegistry();
+    }
+
+} // end namespace Catch
+// end catch_tag_alias_registry.cpp
+// start catch_test_case_info.cpp
+
+#include <cctype>
+#include <exception>
+#include <algorithm>
+#include <sstream>
+
+namespace Catch {
+
+    namespace {
+        TestCaseInfo::SpecialProperties parseSpecialTag( std::string const& tag ) {
+            if( startsWith( tag, '.' ) ||
+                tag == "!hide" )
+                return TestCaseInfo::IsHidden;
+            else if( tag == "!throws" )
+                return TestCaseInfo::Throws;
+            else if( tag == "!shouldfail" )
+                return TestCaseInfo::ShouldFail;
+            else if( tag == "!mayfail" )
+                return TestCaseInfo::MayFail;
+            else if( tag == "!nonportable" )
+                return TestCaseInfo::NonPortable;
+            else if( tag == "!benchmark" )
+                return static_cast<TestCaseInfo::SpecialProperties>( TestCaseInfo::Benchmark | TestCaseInfo::IsHidden );
+            else
+                return TestCaseInfo::None;
+        }
+        bool isReservedTag( std::string const& tag ) {
+            return parseSpecialTag( tag ) == TestCaseInfo::None && tag.size() > 0 && !std::isalnum( static_cast<unsigned char>(tag[0]) );
+        }
+        void enforceNotReservedTag( std::string const& tag, SourceLineInfo const& _lineInfo ) {
+            CATCH_ENFORCE( !isReservedTag(tag),
+                          "Tag name: [" << tag << "] is not allowed.\n"
+                          << "Tag names starting with non alpha-numeric characters are reserved\n"
+                          << _lineInfo );
+        }
+    }
+
+    TestCase makeTestCase(  ITestInvoker* _testCase,
+                            std::string const& _className,
+                            NameAndTags const& nameAndTags,
+                            SourceLineInfo const& _lineInfo )
+    {
+        bool isHidden = false;
+
+        // Parse out tags
+        std::vector<std::string> tags;
+        std::string desc, tag;
+        bool inTag = false;
+        std::string _descOrTags = nameAndTags.tags;
+        for (char c : _descOrTags) {
+            if( !inTag ) {
+                if( c == '[' )
+                    inTag = true;
+                else
+                    desc += c;
+            }
+            else {
+                if( c == ']' ) {
+                    TestCaseInfo::SpecialProperties prop = parseSpecialTag( tag );
+                    if( ( prop & TestCaseInfo::IsHidden ) != 0 )
+                        isHidden = true;
+                    else if( prop == TestCaseInfo::None )
+                        enforceNotReservedTag( tag, _lineInfo );
+
+                    tags.push_back( tag );
+                    tag.clear();
+                    inTag = false;
+                }
+                else
+                    tag += c;
+            }
+        }
+        if( isHidden ) {
+            tags.push_back( "." );
+        }
+
+        TestCaseInfo info( nameAndTags.name, _className, desc, tags, _lineInfo );
+        return TestCase( _testCase, std::move(info) );
+    }
+
+    void setTags( TestCaseInfo& testCaseInfo, std::vector<std::string> tags ) {
+        std::sort(begin(tags), end(tags));
+        tags.erase(std::unique(begin(tags), end(tags)), end(tags));
+        testCaseInfo.lcaseTags.clear();
+
+        for( auto const& tag : tags ) {
+            std::string lcaseTag = toLower( tag );
+            testCaseInfo.properties = static_cast<TestCaseInfo::SpecialProperties>( testCaseInfo.properties | parseSpecialTag( lcaseTag ) );
+            testCaseInfo.lcaseTags.push_back( lcaseTag );
+        }
+        testCaseInfo.tags = std::move(tags);
+    }
+
+    TestCaseInfo::TestCaseInfo( std::string const& _name,
+                                std::string const& _className,
+                                std::string const& _description,
+                                std::vector<std::string> const& _tags,
+                                SourceLineInfo const& _lineInfo )
+    :   name( _name ),
+        className( _className ),
+        description( _description ),
+        lineInfo( _lineInfo ),
+        properties( None )
+    {
+        setTags( *this, _tags );
+    }
+
+    bool TestCaseInfo::isHidden() const {
+        return ( properties & IsHidden ) != 0;
+    }
+    bool TestCaseInfo::throws() const {
+        return ( properties & Throws ) != 0;
+    }
+    bool TestCaseInfo::okToFail() const {
+        return ( properties & (ShouldFail | MayFail ) ) != 0;
+    }
+    bool TestCaseInfo::expectedToFail() const {
+        return ( properties & (ShouldFail ) ) != 0;
+    }
+
+    std::string TestCaseInfo::tagsAsString() const {
+        std::string ret;
+        // '[' and ']' per tag
+        std::size_t full_size = 2 * tags.size();
+        for (const auto& tag : tags) {
+            full_size += tag.size();
+        }
+        ret.reserve(full_size);
+        for (const auto& tag : tags) {
+            ret.push_back('[');
+            ret.append(tag);
+            ret.push_back(']');
+        }
+
+        return ret;
+    }
+
+    TestCase::TestCase( ITestInvoker* testCase, TestCaseInfo&& info ) : TestCaseInfo( std::move(info) ), test( testCase ) {}
+
+    TestCase TestCase::withName( std::string const& _newName ) const {
+        TestCase other( *this );
+        other.name = _newName;
+        return other;
+    }
+
+    void TestCase::invoke() const {
+        test->invoke();
+    }
+
+    bool TestCase::operator == ( TestCase const& other ) const {
+        return  test.get() == other.test.get() &&
+                name == other.name &&
+                className == other.className;
+    }
+
+    bool TestCase::operator < ( TestCase const& other ) const {
+        return name < other.name;
+    }
+
+    TestCaseInfo const& TestCase::getTestCaseInfo() const
+    {
+        return *this;
+    }
+
+} // end namespace Catch
+// end catch_test_case_info.cpp
+// start catch_test_case_registry_impl.cpp
+
+#include <sstream>
+
+namespace Catch {
+
+    std::vector<TestCase> sortTests( IConfig const& config, std::vector<TestCase> const& unsortedTestCases ) {
+
+        std::vector<TestCase> sorted = unsortedTestCases;
+
+        switch( config.runOrder() ) {
+            case RunTests::InLexicographicalOrder:
+                std::sort( sorted.begin(), sorted.end() );
+                break;
+            case RunTests::InRandomOrder:
+                seedRng( config );
+                std::shuffle( sorted.begin(), sorted.end(), rng() );
+                break;
+            case RunTests::InDeclarationOrder:
+                // already in declaration order
+                break;
+        }
+        return sorted;
+    }
+    bool matchTest( TestCase const& testCase, TestSpec const& testSpec, IConfig const& config ) {
+        return testSpec.matches( testCase ) && ( config.allowThrows() || !testCase.throws() );
+    }
+
+    void enforceNoDuplicateTestCases( std::vector<TestCase> const& functions ) {
+        std::set<TestCase> seenFunctions;
+        for( auto const& function : functions ) {
+            auto prev = seenFunctions.insert( function );
+            CATCH_ENFORCE( prev.second,
+                    "error: TEST_CASE( \"" << function.name << "\" ) already defined.\n"
+                    << "\tFirst seen at " << prev.first->getTestCaseInfo().lineInfo << "\n"
+                    << "\tRedefined at " << function.getTestCaseInfo().lineInfo );
+        }
+    }
+
+    std::vector<TestCase> filterTests( std::vector<TestCase> const& testCases, TestSpec const& testSpec, IConfig const& config ) {
+        std::vector<TestCase> filtered;
+        filtered.reserve( testCases.size() );
+        for( auto const& testCase : testCases )
+            if( matchTest( testCase, testSpec, config ) )
+                filtered.push_back( testCase );
+        return filtered;
+    }
+    std::vector<TestCase> const& getAllTestCasesSorted( IConfig const& config ) {
+        return getRegistryHub().getTestCaseRegistry().getAllTestsSorted( config );
+    }
+
+    void TestRegistry::registerTest( TestCase const& testCase ) {
+        std::string name = testCase.getTestCaseInfo().name;
+        if( name.empty() ) {
+            ReusableStringStream rss;
+            rss << "Anonymous test case " << ++m_unnamedCount;
+            return registerTest( testCase.withName( rss.str() ) );
+        }
+        m_functions.push_back( testCase );
+    }
+
+    std::vector<TestCase> const& TestRegistry::getAllTests() const {
+        return m_functions;
+    }
+    std::vector<TestCase> const& TestRegistry::getAllTestsSorted( IConfig const& config ) const {
+        if( m_sortedFunctions.empty() )
+            enforceNoDuplicateTestCases( m_functions );
+
+        if(  m_currentSortOrder != config.runOrder() || m_sortedFunctions.empty() ) {
+            m_sortedFunctions = sortTests( config, m_functions );
+            m_currentSortOrder = config.runOrder();
+        }
+        return m_sortedFunctions;
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    TestInvokerAsFunction::TestInvokerAsFunction( void(*testAsFunction)() ) noexcept : m_testAsFunction( testAsFunction ) {}
+
+    void TestInvokerAsFunction::invoke() const {
+        m_testAsFunction();
+    }
+
+    std::string extractClassName( StringRef const& classOrQualifiedMethodName ) {
+        std::string className = classOrQualifiedMethodName;
+        if( startsWith( className, '&' ) )
+        {
+            std::size_t lastColons = className.rfind( "::" );
+            std::size_t penultimateColons = className.rfind( "::", lastColons-1 );
+            if( penultimateColons == std::string::npos )
+                penultimateColons = 1;
+            className = className.substr( penultimateColons, lastColons-penultimateColons );
+        }
+        return className;
+    }
+
+} // end namespace Catch
+// end catch_test_case_registry_impl.cpp
+// start catch_test_case_tracker.cpp
+
+#include <algorithm>
+#include <cassert>
+#include <stdexcept>
+#include <memory>
+#include <sstream>
+
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wexit-time-destructors"
+#endif
+
+namespace Catch {
+namespace TestCaseTracking {
+
+    NameAndLocation::NameAndLocation( std::string const& _name, SourceLineInfo const& _location )
+    :   name( _name ),
+        location( _location )
+    {}
+
+    ITracker::~ITracker() = default;
+
+    TrackerContext& TrackerContext::instance() {
+        static TrackerContext s_instance;
+        return s_instance;
+    }
+
+    ITracker& TrackerContext::startRun() {
+        m_rootTracker = std::make_shared<SectionTracker>( NameAndLocation( "{root}", CATCH_INTERNAL_LINEINFO ), *this, nullptr );
+        m_currentTracker = nullptr;
+        m_runState = Executing;
+        return *m_rootTracker;
+    }
+
+    void TrackerContext::endRun() {
+        m_rootTracker.reset();
+        m_currentTracker = nullptr;
+        m_runState = NotStarted;
+    }
+
+    void TrackerContext::startCycle() {
+        m_currentTracker = m_rootTracker.get();
+        m_runState = Executing;
+    }
+    void TrackerContext::completeCycle() {
+        m_runState = CompletedCycle;
+    }
+
+    bool TrackerContext::completedCycle() const {
+        return m_runState == CompletedCycle;
+    }
+    ITracker& TrackerContext::currentTracker() {
+        return *m_currentTracker;
+    }
+    void TrackerContext::setCurrentTracker( ITracker* tracker ) {
+        m_currentTracker = tracker;
+    }
+
+    TrackerBase::TrackerBase( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent )
+    :   m_nameAndLocation( nameAndLocation ),
+        m_ctx( ctx ),
+        m_parent( parent )
+    {}
+
+    NameAndLocation const& TrackerBase::nameAndLocation() const {
+        return m_nameAndLocation;
+    }
+    bool TrackerBase::isComplete() const {
+        return m_runState == CompletedSuccessfully || m_runState == Failed;
+    }
+    bool TrackerBase::isSuccessfullyCompleted() const {
+        return m_runState == CompletedSuccessfully;
+    }
+    bool TrackerBase::isOpen() const {
+        return m_runState != NotStarted && !isComplete();
+    }
+    bool TrackerBase::hasChildren() const {
+        return !m_children.empty();
+    }
+
+    void TrackerBase::addChild( ITrackerPtr const& child ) {
+        m_children.push_back( child );
+    }
+
+    ITrackerPtr TrackerBase::findChild( NameAndLocation const& nameAndLocation ) {
+        auto it = std::find_if( m_children.begin(), m_children.end(),
+            [&nameAndLocation]( ITrackerPtr const& tracker ){
+                return
+                    tracker->nameAndLocation().location == nameAndLocation.location &&
+                    tracker->nameAndLocation().name == nameAndLocation.name;
+            } );
+        return( it != m_children.end() )
+            ? *it
+            : nullptr;
+    }
+    ITracker& TrackerBase::parent() {
+        assert( m_parent ); // Should always be non-null except for root
+        return *m_parent;
+    }
+
+    void TrackerBase::openChild() {
+        if( m_runState != ExecutingChildren ) {
+            m_runState = ExecutingChildren;
+            if( m_parent )
+                m_parent->openChild();
+        }
+    }
+
+    bool TrackerBase::isSectionTracker() const { return false; }
+    bool TrackerBase::isIndexTracker() const { return false; }
+
+    void TrackerBase::open() {
+        m_runState = Executing;
+        moveToThis();
+        if( m_parent )
+            m_parent->openChild();
+    }
+
+    void TrackerBase::close() {
+
+        // Close any still open children (e.g. generators)
+        while( &m_ctx.currentTracker() != this )
+            m_ctx.currentTracker().close();
+
+        switch( m_runState ) {
+            case NeedsAnotherRun:
+                break;
+
+            case Executing:
+                m_runState = CompletedSuccessfully;
+                break;
+            case ExecutingChildren:
+                if( m_children.empty() || m_children.back()->isComplete() )
+                    m_runState = CompletedSuccessfully;
+                break;
+
+            case NotStarted:
+            case CompletedSuccessfully:
+            case Failed:
+                CATCH_INTERNAL_ERROR( "Illogical state: " << m_runState );
+
+            default:
+                CATCH_INTERNAL_ERROR( "Unknown state: " << m_runState );
+        }
+        moveToParent();
+        m_ctx.completeCycle();
+    }
+    void TrackerBase::fail() {
+        m_runState = Failed;
+        if( m_parent )
+            m_parent->markAsNeedingAnotherRun();
+        moveToParent();
+        m_ctx.completeCycle();
+    }
+    void TrackerBase::markAsNeedingAnotherRun() {
+        m_runState = NeedsAnotherRun;
+    }
+
+    void TrackerBase::moveToParent() {
+        assert( m_parent );
+        m_ctx.setCurrentTracker( m_parent );
+    }
+    void TrackerBase::moveToThis() {
+        m_ctx.setCurrentTracker( this );
+    }
+
+    SectionTracker::SectionTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent )
+    :   TrackerBase( nameAndLocation, ctx, parent )
+    {
+        if( parent ) {
+            while( !parent->isSectionTracker() )
+                parent = &parent->parent();
+
+            SectionTracker& parentSection = static_cast<SectionTracker&>( *parent );
+            addNextFilters( parentSection.m_filters );
+        }
+    }
+
+    bool SectionTracker::isSectionTracker() const { return true; }
+
+    SectionTracker& SectionTracker::acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation ) {
+        std::shared_ptr<SectionTracker> section;
+
+        ITracker& currentTracker = ctx.currentTracker();
+        if( ITrackerPtr childTracker = currentTracker.findChild( nameAndLocation ) ) {
+            assert( childTracker );
+            assert( childTracker->isSectionTracker() );
+            section = std::static_pointer_cast<SectionTracker>( childTracker );
+        }
+        else {
+            section = std::make_shared<SectionTracker>( nameAndLocation, ctx, &currentTracker );
+            currentTracker.addChild( section );
+        }
+        if( !ctx.completedCycle() )
+            section->tryOpen();
+        return *section;
+    }
+
+    void SectionTracker::tryOpen() {
+        if( !isComplete() && (m_filters.empty() || m_filters[0].empty() ||  m_filters[0] == m_nameAndLocation.name ) )
+            open();
+    }
+
+    void SectionTracker::addInitialFilters( std::vector<std::string> const& filters ) {
+        if( !filters.empty() ) {
+            m_filters.push_back(""); // Root - should never be consulted
+            m_filters.push_back(""); // Test Case - not a section filter
+            m_filters.insert( m_filters.end(), filters.begin(), filters.end() );
+        }
+    }
+    void SectionTracker::addNextFilters( std::vector<std::string> const& filters ) {
+        if( filters.size() > 1 )
+            m_filters.insert( m_filters.end(), ++filters.begin(), filters.end() );
+    }
+
+    IndexTracker::IndexTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent, int size )
+    :   TrackerBase( nameAndLocation, ctx, parent ),
+        m_size( size )
+    {}
+
+    bool IndexTracker::isIndexTracker() const { return true; }
+
+    IndexTracker& IndexTracker::acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation, int size ) {
+        std::shared_ptr<IndexTracker> tracker;
+
+        ITracker& currentTracker = ctx.currentTracker();
+        if( ITrackerPtr childTracker = currentTracker.findChild( nameAndLocation ) ) {
+            assert( childTracker );
+            assert( childTracker->isIndexTracker() );
+            tracker = std::static_pointer_cast<IndexTracker>( childTracker );
+        }
+        else {
+            tracker = std::make_shared<IndexTracker>( nameAndLocation, ctx, &currentTracker, size );
+            currentTracker.addChild( tracker );
+        }
+
+        if( !ctx.completedCycle() && !tracker->isComplete() ) {
+            if( tracker->m_runState != ExecutingChildren && tracker->m_runState != NeedsAnotherRun )
+                tracker->moveNext();
+            tracker->open();
+        }
+
+        return *tracker;
+    }
+
+    int IndexTracker::index() const { return m_index; }
+
+    void IndexTracker::moveNext() {
+        m_index++;
+        m_children.clear();
+    }
+
+    void IndexTracker::close() {
+        TrackerBase::close();
+        if( m_runState == CompletedSuccessfully && m_index < m_size-1 )
+            m_runState = Executing;
+    }
+
+} // namespace TestCaseTracking
+
+using TestCaseTracking::ITracker;
+using TestCaseTracking::TrackerContext;
+using TestCaseTracking::SectionTracker;
+using TestCaseTracking::IndexTracker;
+
+} // namespace Catch
+
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#endif
+// end catch_test_case_tracker.cpp
+// start catch_test_registry.cpp
+
+namespace Catch {
+
+    auto makeTestInvoker( void(*testAsFunction)() ) noexcept -> ITestInvoker* {
+        return new(std::nothrow) TestInvokerAsFunction( testAsFunction );
+    }
+
+    NameAndTags::NameAndTags( StringRef const& name_ , StringRef const& tags_ ) noexcept : name( name_ ), tags( tags_ ) {}
+
+    AutoReg::AutoReg( ITestInvoker* invoker, SourceLineInfo const& lineInfo, StringRef const& classOrMethod, NameAndTags const& nameAndTags ) noexcept {
+        CATCH_TRY {
+            getMutableRegistryHub()
+                    .registerTest(
+                        makeTestCase(
+                            invoker,
+                            extractClassName( classOrMethod ),
+                            nameAndTags,
+                            lineInfo));
+        } CATCH_CATCH_ALL {
+            // Do not throw when constructing global objects, instead register the exception to be processed later
+            getMutableRegistryHub().registerStartupException();
+        }
+    }
+
+    AutoReg::~AutoReg() = default;
+}
+// end catch_test_registry.cpp
+// start catch_test_spec.cpp
+
+#include <algorithm>
+#include <string>
+#include <vector>
+#include <memory>
+
+namespace Catch {
+
+    TestSpec::Pattern::~Pattern() = default;
+    TestSpec::NamePattern::~NamePattern() = default;
+    TestSpec::TagPattern::~TagPattern() = default;
+    TestSpec::ExcludedPattern::~ExcludedPattern() = default;
+
+    TestSpec::NamePattern::NamePattern( std::string const& name )
+    : m_wildcardPattern( toLower( name ), CaseSensitive::No )
+    {}
+    bool TestSpec::NamePattern::matches( TestCaseInfo const& testCase ) const {
+        return m_wildcardPattern.matches( toLower( testCase.name ) );
+    }
+
+    TestSpec::TagPattern::TagPattern( std::string const& tag ) : m_tag( toLower( tag ) ) {}
+    bool TestSpec::TagPattern::matches( TestCaseInfo const& testCase ) const {
+        return std::find(begin(testCase.lcaseTags),
+                         end(testCase.lcaseTags),
+                         m_tag) != end(testCase.lcaseTags);
+    }
+
+    TestSpec::ExcludedPattern::ExcludedPattern( PatternPtr const& underlyingPattern ) : m_underlyingPattern( underlyingPattern ) {}
+    bool TestSpec::ExcludedPattern::matches( TestCaseInfo const& testCase ) const { return !m_underlyingPattern->matches( testCase ); }
+
+    bool TestSpec::Filter::matches( TestCaseInfo const& testCase ) const {
+        // All patterns in a filter must match for the filter to be a match
+        for( auto const& pattern : m_patterns ) {
+            if( !pattern->matches( testCase ) )
+                return false;
+        }
+        return true;
+    }
+
+    bool TestSpec::hasFilters() const {
+        return !m_filters.empty();
+    }
+    bool TestSpec::matches( TestCaseInfo const& testCase ) const {
+        // A TestSpec matches if any filter matches
+        for( auto const& filter : m_filters )
+            if( filter.matches( testCase ) )
+                return true;
+        return false;
+    }
+}
+// end catch_test_spec.cpp
+// start catch_test_spec_parser.cpp
+
+namespace Catch {
+
+    TestSpecParser::TestSpecParser( ITagAliasRegistry const& tagAliases ) : m_tagAliases( &tagAliases ) {}
+
+    TestSpecParser& TestSpecParser::parse( std::string const& arg ) {
+        m_mode = None;
+        m_exclusion = false;
+        m_start = std::string::npos;
+        m_arg = m_tagAliases->expandAliases( arg );
+        m_escapeChars.clear();
+        for( m_pos = 0; m_pos < m_arg.size(); ++m_pos )
+            visitChar( m_arg[m_pos] );
+        if( m_mode == Name )
+            addPattern<TestSpec::NamePattern>();
+        return *this;
+    }
+    TestSpec TestSpecParser::testSpec() {
+        addFilter();
+        return m_testSpec;
+    }
+
+    void TestSpecParser::visitChar( char c ) {
+        if( m_mode == None ) {
+            switch( c ) {
+            case ' ': return;
+            case '~': m_exclusion = true; return;
+            case '[': return startNewMode( Tag, ++m_pos );
+            case '"': return startNewMode( QuotedName, ++m_pos );
+            case '\\': return escape();
+            default: startNewMode( Name, m_pos ); break;
+            }
+        }
+        if( m_mode == Name ) {
+            if( c == ',' ) {
+                addPattern<TestSpec::NamePattern>();
+                addFilter();
+            }
+            else if( c == '[' ) {
+                if( subString() == "exclude:" )
+                    m_exclusion = true;
+                else
+                    addPattern<TestSpec::NamePattern>();
+                startNewMode( Tag, ++m_pos );
+            }
+            else if( c == '\\' )
+                escape();
+        }
+        else if( m_mode == EscapedName )
+            m_mode = Name;
+        else if( m_mode == QuotedName && c == '"' )
+            addPattern<TestSpec::NamePattern>();
+        else if( m_mode == Tag && c == ']' )
+            addPattern<TestSpec::TagPattern>();
+    }
+    void TestSpecParser::startNewMode( Mode mode, std::size_t start ) {
+        m_mode = mode;
+        m_start = start;
+    }
+    void TestSpecParser::escape() {
+        if( m_mode == None )
+            m_start = m_pos;
+        m_mode = EscapedName;
+        m_escapeChars.push_back( m_pos );
+    }
+    std::string TestSpecParser::subString() const { return m_arg.substr( m_start, m_pos - m_start ); }
+
+    void TestSpecParser::addFilter() {
+        if( !m_currentFilter.m_patterns.empty() ) {
+            m_testSpec.m_filters.push_back( m_currentFilter );
+            m_currentFilter = TestSpec::Filter();
+        }
+    }
+
+    TestSpec parseTestSpec( std::string const& arg ) {
+        return TestSpecParser( ITagAliasRegistry::get() ).parse( arg ).testSpec();
+    }
+
+} // namespace Catch
+// end catch_test_spec_parser.cpp
+// start catch_timer.cpp
+
+#include <chrono>
+
+static const uint64_t nanosecondsInSecond = 1000000000;
+
+namespace Catch {
+
+    auto getCurrentNanosecondsSinceEpoch() -> uint64_t {
+        return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();
+    }
+
+    namespace {
+        auto estimateClockResolution() -> uint64_t {
+            uint64_t sum = 0;
+            static const uint64_t iterations = 1000000;
+
+            auto startTime = getCurrentNanosecondsSinceEpoch();
+
+            for( std::size_t i = 0; i < iterations; ++i ) {
+
+                uint64_t ticks;
+                uint64_t baseTicks = getCurrentNanosecondsSinceEpoch();
+                do {
+                    ticks = getCurrentNanosecondsSinceEpoch();
+                } while( ticks == baseTicks );
+
+                auto delta = ticks - baseTicks;
+                sum += delta;
+
+                // If we have been calibrating for over 3 seconds -- the clock
+                // is terrible and we should move on.
+                // TBD: How to signal that the measured resolution is probably wrong?
+                if (ticks > startTime + 3 * nanosecondsInSecond) {
+                    return sum / i;
+                }
+            }
+
+            // We're just taking the mean, here. To do better we could take the std. dev and exclude outliers
+            // - and potentially do more iterations if there's a high variance.
+            return sum/iterations;
+        }
+    }
+    auto getEstimatedClockResolution() -> uint64_t {
+        static auto s_resolution = estimateClockResolution();
+        return s_resolution;
+    }
+
+    void Timer::start() {
+       m_nanoseconds = getCurrentNanosecondsSinceEpoch();
+    }
+    auto Timer::getElapsedNanoseconds() const -> uint64_t {
+        return getCurrentNanosecondsSinceEpoch() - m_nanoseconds;
+    }
+    auto Timer::getElapsedMicroseconds() const -> uint64_t {
+        return getElapsedNanoseconds()/1000;
+    }
+    auto Timer::getElapsedMilliseconds() const -> unsigned int {
+        return static_cast<unsigned int>(getElapsedMicroseconds()/1000);
+    }
+    auto Timer::getElapsedSeconds() const -> double {
+        return getElapsedMicroseconds()/1000000.0;
+    }
+
+} // namespace Catch
+// end catch_timer.cpp
+// start catch_tostring.cpp
+
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wexit-time-destructors"
+#    pragma clang diagnostic ignored "-Wglobal-constructors"
+#endif
+
+// Enable specific decls locally
+#if !defined(CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER)
+#define CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
+#endif
+
+#include <cmath>
+#include <iomanip>
+
+namespace Catch {
+
+namespace Detail {
+
+    const std::string unprintableString = "{?}";
+
+    namespace {
+        const int hexThreshold = 255;
+
+        struct Endianness {
+            enum Arch { Big, Little };
+
+            static Arch which() {
+                union _{
+                    int asInt;
+                    char asChar[sizeof (int)];
+                } u;
+
+                u.asInt = 1;
+                return ( u.asChar[sizeof(int)-1] == 1 ) ? Big : Little;
+            }
+        };
+    }
+
+    std::string rawMemoryToString( const void *object, std::size_t size ) {
+        // Reverse order for little endian architectures
+        int i = 0, end = static_cast<int>( size ), inc = 1;
+        if( Endianness::which() == Endianness::Little ) {
+            i = end-1;
+            end = inc = -1;
+        }
+
+        unsigned char const *bytes = static_cast<unsigned char const *>(object);
+        ReusableStringStream rss;
+        rss << "0x" << std::setfill('0') << std::hex;
+        for( ; i != end; i += inc )
+             rss << std::setw(2) << static_cast<unsigned>(bytes[i]);
+       return rss.str();
+    }
+}
+
+template<typename T>
+std::string fpToString( T value, int precision ) {
+    if (Catch::isnan(value)) {
+        return "nan";
+    }
+
+    ReusableStringStream rss;
+    rss << std::setprecision( precision )
+        << std::fixed
+        << value;
+    std::string d = rss.str();
+    std::size_t i = d.find_last_not_of( '0' );
+    if( i != std::string::npos && i != d.size()-1 ) {
+        if( d[i] == '.' )
+            i++;
+        d = d.substr( 0, i+1 );
+    }
+    return d;
+}
+
+//// ======================================================= ////
+//
+//   Out-of-line defs for full specialization of StringMaker
+//
+//// ======================================================= ////
+
+std::string StringMaker<std::string>::convert(const std::string& str) {
+    if (!getCurrentContext().getConfig()->showInvisibles()) {
+        return '"' + str + '"';
+    }
+
+    std::string s("\"");
+    for (char c : str) {
+        switch (c) {
+        case '\n':
+            s.append("\\n");
+            break;
+        case '\t':
+            s.append("\\t");
+            break;
+        default:
+            s.push_back(c);
+            break;
+        }
+    }
+    s.append("\"");
+    return s;
+}
+
+#ifdef CATCH_CONFIG_CPP17_STRING_VIEW
+std::string StringMaker<std::string_view>::convert(std::string_view str) {
+    return ::Catch::Detail::stringify(std::string{ str });
+}
+#endif
+
+std::string StringMaker<char const*>::convert(char const* str) {
+    if (str) {
+        return ::Catch::Detail::stringify(std::string{ str });
+    } else {
+        return{ "{null string}" };
+    }
+}
+std::string StringMaker<char*>::convert(char* str) {
+    if (str) {
+        return ::Catch::Detail::stringify(std::string{ str });
+    } else {
+        return{ "{null string}" };
+    }
+}
+
+#ifdef CATCH_CONFIG_WCHAR
+std::string StringMaker<std::wstring>::convert(const std::wstring& wstr) {
+    std::string s;
+    s.reserve(wstr.size());
+    for (auto c : wstr) {
+        s += (c <= 0xff) ? static_cast<char>(c) : '?';
+    }
+    return ::Catch::Detail::stringify(s);
+}
+
+# ifdef CATCH_CONFIG_CPP17_STRING_VIEW
+std::string StringMaker<std::wstring_view>::convert(std::wstring_view str) {
+    return StringMaker<std::wstring>::convert(std::wstring(str));
+}
+# endif
+
+std::string StringMaker<wchar_t const*>::convert(wchar_t const * str) {
+    if (str) {
+        return ::Catch::Detail::stringify(std::wstring{ str });
+    } else {
+        return{ "{null string}" };
+    }
+}
+std::string StringMaker<wchar_t *>::convert(wchar_t * str) {
+    if (str) {
+        return ::Catch::Detail::stringify(std::wstring{ str });
+    } else {
+        return{ "{null string}" };
+    }
+}
+#endif
+
+std::string StringMaker<int>::convert(int value) {
+    return ::Catch::Detail::stringify(static_cast<long long>(value));
+}
+std::string StringMaker<long>::convert(long value) {
+    return ::Catch::Detail::stringify(static_cast<long long>(value));
+}
+std::string StringMaker<long long>::convert(long long value) {
+    ReusableStringStream rss;
+    rss << value;
+    if (value > Detail::hexThreshold) {
+        rss << " (0x" << std::hex << value << ')';
+    }
+    return rss.str();
+}
+
+std::string StringMaker<unsigned int>::convert(unsigned int value) {
+    return ::Catch::Detail::stringify(static_cast<unsigned long long>(value));
+}
+std::string StringMaker<unsigned long>::convert(unsigned long value) {
+    return ::Catch::Detail::stringify(static_cast<unsigned long long>(value));
+}
+std::string StringMaker<unsigned long long>::convert(unsigned long long value) {
+    ReusableStringStream rss;
+    rss << value;
+    if (value > Detail::hexThreshold) {
+        rss << " (0x" << std::hex << value << ')';
+    }
+    return rss.str();
+}
+
+std::string StringMaker<bool>::convert(bool b) {
+    return b ? "true" : "false";
+}
+
+std::string StringMaker<signed char>::convert(signed char value) {
+    if (value == '\r') {
+        return "'\\r'";
+    } else if (value == '\f') {
+        return "'\\f'";
+    } else if (value == '\n') {
+        return "'\\n'";
+    } else if (value == '\t') {
+        return "'\\t'";
+    } else if ('\0' <= value && value < ' ') {
+        return ::Catch::Detail::stringify(static_cast<unsigned int>(value));
+    } else {
+        char chstr[] = "' '";
+        chstr[1] = value;
+        return chstr;
+    }
+}
+std::string StringMaker<char>::convert(char c) {
+    return ::Catch::Detail::stringify(static_cast<signed char>(c));
+}
+std::string StringMaker<unsigned char>::convert(unsigned char c) {
+    return ::Catch::Detail::stringify(static_cast<char>(c));
+}
+
+std::string StringMaker<std::nullptr_t>::convert(std::nullptr_t) {
+    return "nullptr";
+}
+
+std::string StringMaker<float>::convert(float value) {
+    return fpToString(value, 5) + 'f';
+}
+std::string StringMaker<double>::convert(double value) {
+    return fpToString(value, 10);
+}
+
+std::string ratio_string<std::atto>::symbol() { return "a"; }
+std::string ratio_string<std::femto>::symbol() { return "f"; }
+std::string ratio_string<std::pico>::symbol() { return "p"; }
+std::string ratio_string<std::nano>::symbol() { return "n"; }
+std::string ratio_string<std::micro>::symbol() { return "u"; }
+std::string ratio_string<std::milli>::symbol() { return "m"; }
+
+} // end namespace Catch
+
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#endif
+
+// end catch_tostring.cpp
+// start catch_totals.cpp
+
+namespace Catch {
+
+    Counts Counts::operator - ( Counts const& other ) const {
+        Counts diff;
+        diff.passed = passed - other.passed;
+        diff.failed = failed - other.failed;
+        diff.failedButOk = failedButOk - other.failedButOk;
+        return diff;
+    }
+
+    Counts& Counts::operator += ( Counts const& other ) {
+        passed += other.passed;
+        failed += other.failed;
+        failedButOk += other.failedButOk;
+        return *this;
+    }
+
+    std::size_t Counts::total() const {
+        return passed + failed + failedButOk;
+    }
+    bool Counts::allPassed() const {
+        return failed == 0 && failedButOk == 0;
+    }
+    bool Counts::allOk() const {
+        return failed == 0;
+    }
+
+    Totals Totals::operator - ( Totals const& other ) const {
+        Totals diff;
+        diff.assertions = assertions - other.assertions;
+        diff.testCases = testCases - other.testCases;
+        return diff;
+    }
+
+    Totals& Totals::operator += ( Totals const& other ) {
+        assertions += other.assertions;
+        testCases += other.testCases;
+        return *this;
+    }
+
+    Totals Totals::delta( Totals const& prevTotals ) const {
+        Totals diff = *this - prevTotals;
+        if( diff.assertions.failed > 0 )
+            ++diff.testCases.failed;
+        else if( diff.assertions.failedButOk > 0 )
+            ++diff.testCases.failedButOk;
+        else
+            ++diff.testCases.passed;
+        return diff;
+    }
+
+}
+// end catch_totals.cpp
+// start catch_uncaught_exceptions.cpp
+
+#include <exception>
+
+namespace Catch {
+    bool uncaught_exceptions() {
+#if defined(CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS)
+        return std::uncaught_exceptions() > 0;
+#else
+        return std::uncaught_exception();
+#endif
+  }
+} // end namespace Catch
+// end catch_uncaught_exceptions.cpp
+// start catch_version.cpp
+
+#include <ostream>
+
+namespace Catch {
+
+    Version::Version
+        (   unsigned int _majorVersion,
+            unsigned int _minorVersion,
+            unsigned int _patchNumber,
+            char const * const _branchName,
+            unsigned int _buildNumber )
+    :   majorVersion( _majorVersion ),
+        minorVersion( _minorVersion ),
+        patchNumber( _patchNumber ),
+        branchName( _branchName ),
+        buildNumber( _buildNumber )
+    {}
+
+    std::ostream& operator << ( std::ostream& os, Version const& version ) {
+        os  << version.majorVersion << '.'
+            << version.minorVersion << '.'
+            << version.patchNumber;
+        // branchName is never null -> 0th char is \0 if it is empty
+        if (version.branchName[0]) {
+            os << '-' << version.branchName
+               << '.' << version.buildNumber;
+        }
+        return os;
+    }
+
+    Version const& libraryVersion() {
+        static Version version( 2, 5, 0, "", 0 );
+        return version;
+    }
+
+}
+// end catch_version.cpp
+// start catch_wildcard_pattern.cpp
+
+#include <sstream>
+
+namespace Catch {
+
+    WildcardPattern::WildcardPattern( std::string const& pattern,
+                                      CaseSensitive::Choice caseSensitivity )
+    :   m_caseSensitivity( caseSensitivity ),
+        m_pattern( adjustCase( pattern ) )
+    {
+        if( startsWith( m_pattern, '*' ) ) {
+            m_pattern = m_pattern.substr( 1 );
+            m_wildcard = WildcardAtStart;
+        }
+        if( endsWith( m_pattern, '*' ) ) {
+            m_pattern = m_pattern.substr( 0, m_pattern.size()-1 );
+            m_wildcard = static_cast<WildcardPosition>( m_wildcard | WildcardAtEnd );
+        }
+    }
+
+    bool WildcardPattern::matches( std::string const& str ) const {
+        switch( m_wildcard ) {
+            case NoWildcard:
+                return m_pattern == adjustCase( str );
+            case WildcardAtStart:
+                return endsWith( adjustCase( str ), m_pattern );
+            case WildcardAtEnd:
+                return startsWith( adjustCase( str ), m_pattern );
+            case WildcardAtBothEnds:
+                return contains( adjustCase( str ), m_pattern );
+            default:
+                CATCH_INTERNAL_ERROR( "Unknown enum" );
+        }
+    }
+
+    std::string WildcardPattern::adjustCase( std::string const& str ) const {
+        return m_caseSensitivity == CaseSensitive::No ? toLower( str ) : str;
+    }
+}
+// end catch_wildcard_pattern.cpp
+// start catch_xmlwriter.cpp
+
+#include <iomanip>
+
+using uchar = unsigned char;
+
+namespace Catch {
+
+namespace {
+
+    size_t trailingBytes(unsigned char c) {
+        if ((c & 0xE0) == 0xC0) {
+            return 2;
+        }
+        if ((c & 0xF0) == 0xE0) {
+            return 3;
+        }
+        if ((c & 0xF8) == 0xF0) {
+            return 4;
+        }
+        CATCH_INTERNAL_ERROR("Invalid multibyte utf-8 start byte encountered");
+    }
+
+    uint32_t headerValue(unsigned char c) {
+        if ((c & 0xE0) == 0xC0) {
+            return c & 0x1F;
+        }
+        if ((c & 0xF0) == 0xE0) {
+            return c & 0x0F;
+        }
+        if ((c & 0xF8) == 0xF0) {
+            return c & 0x07;
+        }
+        CATCH_INTERNAL_ERROR("Invalid multibyte utf-8 start byte encountered");
+    }
+
+    void hexEscapeChar(std::ostream& os, unsigned char c) {
+        os << "\\x"
+            << std::uppercase << std::hex << std::setfill('0') << std::setw(2)
+            << static_cast<int>(c);
+    }
+
+} // anonymous namespace
+
+    XmlEncode::XmlEncode( std::string const& str, ForWhat forWhat )
+    :   m_str( str ),
+        m_forWhat( forWhat )
+    {}
+
+    void XmlEncode::encodeTo( std::ostream& os ) const {
+        // Apostrophe escaping not necessary if we always use " to write attributes
+        // (see: http://www.w3.org/TR/xml/#syntax)
+
+        for( std::size_t idx = 0; idx < m_str.size(); ++ idx ) {
+            uchar c = m_str[idx];
+            switch (c) {
+            case '<':   os << "&lt;"; break;
+            case '&':   os << "&amp;"; break;
+
+            case '>':
+                // See: http://www.w3.org/TR/xml/#syntax
+                if (idx > 2 && m_str[idx - 1] == ']' && m_str[idx - 2] == ']')
+                    os << "&gt;";
+                else
+                    os << c;
+                break;
+
+            case '\"':
+                if (m_forWhat == ForAttributes)
+                    os << "&quot;";
+                else
+                    os << c;
+                break;
+
+            default:
+                // Check for control characters and invalid utf-8
+
+                // Escape control characters in standard ascii
+                // see http://stackoverflow.com/questions/404107/why-are-control-characters-illegal-in-xml-1-0
+                if (c < 0x09 || (c > 0x0D && c < 0x20) || c == 0x7F) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                // Plain ASCII: Write it to stream
+                if (c < 0x7F) {
+                    os << c;
+                    break;
+                }
+
+                // UTF-8 territory
+                // Check if the encoding is valid and if it is not, hex escape bytes.
+                // Important: We do not check the exact decoded values for validity, only the encoding format
+                // First check that this bytes is a valid lead byte:
+                // This means that it is not encoded as 1111 1XXX
+                // Or as 10XX XXXX
+                if (c <  0xC0 ||
+                    c >= 0xF8) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                auto encBytes = trailingBytes(c);
+                // Are there enough bytes left to avoid accessing out-of-bounds memory?
+                if (idx + encBytes - 1 >= m_str.size()) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+                // The header is valid, check data
+                // The next encBytes bytes must together be a valid utf-8
+                // This means: bitpattern 10XX XXXX and the extracted value is sane (ish)
+                bool valid = true;
+                uint32_t value = headerValue(c);
+                for (std::size_t n = 1; n < encBytes; ++n) {
+                    uchar nc = m_str[idx + n];
+                    valid &= ((nc & 0xC0) == 0x80);
+                    value = (value << 6) | (nc & 0x3F);
+                }
+
+                if (
+                    // Wrong bit pattern of following bytes
+                    (!valid) ||
+                    // Overlong encodings
+                    (value < 0x80) ||
+                    (0x80 <= value && value < 0x800   && encBytes > 2) ||
+                    (0x800 < value && value < 0x10000 && encBytes > 3) ||
+                    // Encoded value out of range
+                    (value >= 0x110000)
+                    ) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                // If we got here, this is in fact a valid(ish) utf-8 sequence
+                for (std::size_t n = 0; n < encBytes; ++n) {
+                    os << m_str[idx + n];
+                }
+                idx += encBytes - 1;
+                break;
+            }
+        }
+    }
+
+    std::ostream& operator << ( std::ostream& os, XmlEncode const& xmlEncode ) {
+        xmlEncode.encodeTo( os );
+        return os;
+    }
+
+    XmlWriter::ScopedElement::ScopedElement( XmlWriter* writer )
+    :   m_writer( writer )
+    {}
+
+    XmlWriter::ScopedElement::ScopedElement( ScopedElement&& other ) noexcept
+    :   m_writer( other.m_writer ){
+        other.m_writer = nullptr;
+    }
+    XmlWriter::ScopedElement& XmlWriter::ScopedElement::operator=( ScopedElement&& other ) noexcept {
+        if ( m_writer ) {
+            m_writer->endElement();
+        }
+        m_writer = other.m_writer;
+        other.m_writer = nullptr;
+        return *this;
+    }
+
+    XmlWriter::ScopedElement::~ScopedElement() {
+        if( m_writer )
+            m_writer->endElement();
+    }
+
+    XmlWriter::ScopedElement& XmlWriter::ScopedElement::writeText( std::string const& text, bool indent ) {
+        m_writer->writeText( text, indent );
+        return *this;
+    }
+
+    XmlWriter::XmlWriter( std::ostream& os ) : m_os( os )
+    {
+        writeDeclaration();
+    }
+
+    XmlWriter::~XmlWriter() {
+        while( !m_tags.empty() )
+            endElement();
+    }
+
+    XmlWriter& XmlWriter::startElement( std::string const& name ) {
+        ensureTagClosed();
+        newlineIfNecessary();
+        m_os << m_indent << '<' << name;
+        m_tags.push_back( name );
+        m_indent += "  ";
+        m_tagIsOpen = true;
+        return *this;
+    }
+
+    XmlWriter::ScopedElement XmlWriter::scopedElement( std::string const& name ) {
+        ScopedElement scoped( this );
+        startElement( name );
+        return scoped;
+    }
+
+    XmlWriter& XmlWriter::endElement() {
+        newlineIfNecessary();
+        m_indent = m_indent.substr( 0, m_indent.size()-2 );
+        if( m_tagIsOpen ) {
+            m_os << "/>";
+            m_tagIsOpen = false;
+        }
+        else {
+            m_os << m_indent << "</" << m_tags.back() << ">";
+        }
+        m_os << std::endl;
+        m_tags.pop_back();
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeAttribute( std::string const& name, std::string const& attribute ) {
+        if( !name.empty() && !attribute.empty() )
+            m_os << ' ' << name << "=\"" << XmlEncode( attribute, XmlEncode::ForAttributes ) << '"';
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeAttribute( std::string const& name, bool attribute ) {
+        m_os << ' ' << name << "=\"" << ( attribute ? "true" : "false" ) << '"';
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeText( std::string const& text, bool indent ) {
+        if( !text.empty() ){
+            bool tagWasOpen = m_tagIsOpen;
+            ensureTagClosed();
+            if( tagWasOpen && indent )
+                m_os << m_indent;
+            m_os << XmlEncode( text );
+            m_needsNewline = true;
+        }
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeComment( std::string const& text ) {
+        ensureTagClosed();
+        m_os << m_indent << "<!--" << text << "-->";
+        m_needsNewline = true;
+        return *this;
+    }
+
+    void XmlWriter::writeStylesheetRef( std::string const& url ) {
+        m_os << "<?xml-stylesheet type=\"text/xsl\" href=\"" << url << "\"?>\n";
+    }
+
+    XmlWriter& XmlWriter::writeBlankLine() {
+        ensureTagClosed();
+        m_os << '\n';
+        return *this;
+    }
+
+    void XmlWriter::ensureTagClosed() {
+        if( m_tagIsOpen ) {
+            m_os << ">" << std::endl;
+            m_tagIsOpen = false;
+        }
+    }
+
+    void XmlWriter::writeDeclaration() {
+        m_os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+    }
+
+    void XmlWriter::newlineIfNecessary() {
+        if( m_needsNewline ) {
+            m_os << std::endl;
+            m_needsNewline = false;
+        }
+    }
+}
+// end catch_xmlwriter.cpp
+// start catch_reporter_bases.cpp
+
+#include <cstring>
+#include <cfloat>
+#include <cstdio>
+#include <cassert>
+#include <memory>
+
+namespace Catch {
+    void prepareExpandedExpression(AssertionResult& result) {
+        result.getExpandedExpression();
+    }
+
+    // Because formatting using c++ streams is stateful, drop down to C is required
+    // Alternatively we could use stringstream, but its performance is... not good.
+    std::string getFormattedDuration( double duration ) {
+        // Max exponent + 1 is required to represent the whole part
+        // + 1 for decimal point
+        // + 3 for the 3 decimal places
+        // + 1 for null terminator
+        const std::size_t maxDoubleSize = DBL_MAX_10_EXP + 1 + 1 + 3 + 1;
+        char buffer[maxDoubleSize];
+
+        // Save previous errno, to prevent sprintf from overwriting it
+        ErrnoGuard guard;
+#ifdef _MSC_VER
+        sprintf_s(buffer, "%.3f", duration);
+#else
+        sprintf(buffer, "%.3f", duration);
+#endif
+        return std::string(buffer);
+    }
+
+    TestEventListenerBase::TestEventListenerBase(ReporterConfig const & _config)
+        :StreamingReporterBase(_config) {}
+
+    std::set<Verbosity> TestEventListenerBase::getSupportedVerbosities() {
+        return { Verbosity::Quiet, Verbosity::Normal, Verbosity::High };
+    }
+
+    void TestEventListenerBase::assertionStarting(AssertionInfo const &) {}
+
+    bool TestEventListenerBase::assertionEnded(AssertionStats const &) {
+        return false;
+    }
+
+} // end namespace Catch
+// end catch_reporter_bases.cpp
+// start catch_reporter_compact.cpp
+
+namespace {
+
+#ifdef CATCH_PLATFORM_MAC
+    const char* failedString() { return "FAILED"; }
+    const char* passedString() { return "PASSED"; }
+#else
+    const char* failedString() { return "failed"; }
+    const char* passedString() { return "passed"; }
+#endif
+
+    // Colour::LightGrey
+    Catch::Colour::Code dimColour() { return Catch::Colour::FileName; }
+
+    std::string bothOrAll( std::size_t count ) {
+        return count == 1 ? std::string() :
+               count == 2 ? "both " : "all " ;
+    }
+
+} // anon namespace
+
+namespace Catch {
+namespace {
+// Colour, message variants:
+// - white: No tests ran.
+// -   red: Failed [both/all] N test cases, failed [both/all] M assertions.
+// - white: Passed [both/all] N test cases (no assertions).
+// -   red: Failed N tests cases, failed M assertions.
+// - green: Passed [both/all] N tests cases with M assertions.
+void printTotals(std::ostream& out, const Totals& totals) {
+    if (totals.testCases.total() == 0) {
+        out << "No tests ran.";
+    } else if (totals.testCases.failed == totals.testCases.total()) {
+        Colour colour(Colour::ResultError);
+        const std::string qualify_assertions_failed =
+            totals.assertions.failed == totals.assertions.total() ?
+            bothOrAll(totals.assertions.failed) : std::string();
+        out <<
+            "Failed " << bothOrAll(totals.testCases.failed)
+            << pluralise(totals.testCases.failed, "test case") << ", "
+            "failed " << qualify_assertions_failed <<
+            pluralise(totals.assertions.failed, "assertion") << '.';
+    } else if (totals.assertions.total() == 0) {
+        out <<
+            "Passed " << bothOrAll(totals.testCases.total())
+            << pluralise(totals.testCases.total(), "test case")
+            << " (no assertions).";
+    } else if (totals.assertions.failed) {
+        Colour colour(Colour::ResultError);
+        out <<
+            "Failed " << pluralise(totals.testCases.failed, "test case") << ", "
+            "failed " << pluralise(totals.assertions.failed, "assertion") << '.';
+    } else {
+        Colour colour(Colour::ResultSuccess);
+        out <<
+            "Passed " << bothOrAll(totals.testCases.passed)
+            << pluralise(totals.testCases.passed, "test case") <<
+            " with " << pluralise(totals.assertions.passed, "assertion") << '.';
+    }
+}
+
+// Implementation of CompactReporter formatting
+class AssertionPrinter {
+public:
+    AssertionPrinter& operator= (AssertionPrinter const&) = delete;
+    AssertionPrinter(AssertionPrinter const&) = delete;
+    AssertionPrinter(std::ostream& _stream, AssertionStats const& _stats, bool _printInfoMessages)
+        : stream(_stream)
+        , result(_stats.assertionResult)
+        , messages(_stats.infoMessages)
+        , itMessage(_stats.infoMessages.begin())
+        , printInfoMessages(_printInfoMessages) {}
+
+    void print() {
+        printSourceInfo();
+
+        itMessage = messages.begin();
+
+        switch (result.getResultType()) {
+        case ResultWas::Ok:
+            printResultType(Colour::ResultSuccess, passedString());
+            printOriginalExpression();
+            printReconstructedExpression();
+            if (!result.hasExpression())
+                printRemainingMessages(Colour::None);
+            else
+                printRemainingMessages();
+            break;
+        case ResultWas::ExpressionFailed:
+            if (result.isOk())
+                printResultType(Colour::ResultSuccess, failedString() + std::string(" - but was ok"));
+            else
+                printResultType(Colour::Error, failedString());
+            printOriginalExpression();
+            printReconstructedExpression();
+            printRemainingMessages();
+            break;
+        case ResultWas::ThrewException:
+            printResultType(Colour::Error, failedString());
+            printIssue("unexpected exception with message:");
+            printMessage();
+            printExpressionWas();
+            printRemainingMessages();
+            break;
+        case ResultWas::FatalErrorCondition:
+            printResultType(Colour::Error, failedString());
+            printIssue("fatal error condition with message:");
+            printMessage();
+            printExpressionWas();
+            printRemainingMessages();
+            break;
+        case ResultWas::DidntThrowException:
+            printResultType(Colour::Error, failedString());
+            printIssue("expected exception, got none");
+            printExpressionWas();
+            printRemainingMessages();
+            break;
+        case ResultWas::Info:
+            printResultType(Colour::None, "info");
+            printMessage();
+            printRemainingMessages();
+            break;
+        case ResultWas::Warning:
+            printResultType(Colour::None, "warning");
+            printMessage();
+            printRemainingMessages();
+            break;
+        case ResultWas::ExplicitFailure:
+            printResultType(Colour::Error, failedString());
+            printIssue("explicitly");
+            printRemainingMessages(Colour::None);
+            break;
+            // These cases are here to prevent compiler warnings
+        case ResultWas::Unknown:
+        case ResultWas::FailureBit:
+        case ResultWas::Exception:
+            printResultType(Colour::Error, "** internal error **");
+            break;
+        }
+    }
+
+private:
+    void printSourceInfo() const {
+        Colour colourGuard(Colour::FileName);
+        stream << result.getSourceInfo() << ':';
+    }
+
+    void printResultType(Colour::Code colour, std::string const& passOrFail) const {
+        if (!passOrFail.empty()) {
+            {
+                Colour colourGuard(colour);
+                stream << ' ' << passOrFail;
+            }
+            stream << ':';
+        }
+    }
+
+    void printIssue(std::string const& issue) const {
+        stream << ' ' << issue;
+    }
+
+    void printExpressionWas() {
+        if (result.hasExpression()) {
+            stream << ';';
+            {
+                Colour colour(dimColour());
+                stream << " expression was:";
+            }
+            printOriginalExpression();
+        }
+    }
+
+    void printOriginalExpression() const {
+        if (result.hasExpression()) {
+            stream << ' ' << result.getExpression();
+        }
+    }
+
+    void printReconstructedExpression() const {
+        if (result.hasExpandedExpression()) {
+            {
+                Colour colour(dimColour());
+                stream << " for: ";
+            }
+            stream << result.getExpandedExpression();
+        }
+    }
+
+    void printMessage() {
+        if (itMessage != messages.end()) {
+            stream << " '" << itMessage->message << '\'';
+            ++itMessage;
+        }
+    }
+
+    void printRemainingMessages(Colour::Code colour = dimColour()) {
+        if (itMessage == messages.end())
+            return;
+
+        // using messages.end() directly yields (or auto) compilation error:
+        std::vector<MessageInfo>::const_iterator itEnd = messages.end();
+        const std::size_t N = static_cast<std::size_t>(std::distance(itMessage, itEnd));
+
+        {
+            Colour colourGuard(colour);
+            stream << " with " << pluralise(N, "message") << ':';
+        }
+
+        for (; itMessage != itEnd; ) {
+            // If this assertion is a warning ignore any INFO messages
+            if (printInfoMessages || itMessage->type != ResultWas::Info) {
+                stream << " '" << itMessage->message << '\'';
+                if (++itMessage != itEnd) {
+                    Colour colourGuard(dimColour());
+                    stream << " and";
+                }
+            }
+        }
+    }
+
+private:
+    std::ostream& stream;
+    AssertionResult const& result;
+    std::vector<MessageInfo> messages;
+    std::vector<MessageInfo>::const_iterator itMessage;
+    bool printInfoMessages;
+};
+
+} // anon namespace
+
+        std::string CompactReporter::getDescription() {
+            return "Reports test results on a single line, suitable for IDEs";
+        }
+
+        ReporterPreferences CompactReporter::getPreferences() const {
+            return m_reporterPrefs;
+        }
+
+        void CompactReporter::noMatchingTestCases( std::string const& spec ) {
+            stream << "No test cases matched '" << spec << '\'' << std::endl;
+        }
+
+        void CompactReporter::assertionStarting( AssertionInfo const& ) {}
+
+        bool CompactReporter::assertionEnded( AssertionStats const& _assertionStats ) {
+            AssertionResult const& result = _assertionStats.assertionResult;
+
+            bool printInfoMessages = true;
+
+            // Drop out if result was successful and we're not printing those
+            if( !m_config->includeSuccessfulResults() && result.isOk() ) {
+                if( result.getResultType() != ResultWas::Warning )
+                    return false;
+                printInfoMessages = false;
+            }
+
+            AssertionPrinter printer( stream, _assertionStats, printInfoMessages );
+            printer.print();
+
+            stream << std::endl;
+            return true;
+        }
+
+        void CompactReporter::sectionEnded(SectionStats const& _sectionStats) {
+            if (m_config->showDurations() == ShowDurations::Always) {
+                stream << getFormattedDuration(_sectionStats.durationInSeconds) << " s: " << _sectionStats.sectionInfo.name << std::endl;
+            }
+        }
+
+        void CompactReporter::testRunEnded( TestRunStats const& _testRunStats ) {
+            printTotals( stream, _testRunStats.totals );
+            stream << '\n' << std::endl;
+            StreamingReporterBase::testRunEnded( _testRunStats );
+        }
+
+        CompactReporter::~CompactReporter() {}
+
+    CATCH_REGISTER_REPORTER( "compact", CompactReporter )
+
+} // end namespace Catch
+// end catch_reporter_compact.cpp
+// start catch_reporter_console.cpp
+
+#include <cfloat>
+#include <cstdio>
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4061) // Not all labels are EXPLICITLY handled in switch
+ // Note that 4062 (not all labels are handled
+ // and default is missing) is enabled
+#endif
+
+namespace Catch {
+
+namespace {
+
+// Formatter impl for ConsoleReporter
+class ConsoleAssertionPrinter {
+public:
+    ConsoleAssertionPrinter& operator= (ConsoleAssertionPrinter const&) = delete;
+    ConsoleAssertionPrinter(ConsoleAssertionPrinter const&) = delete;
+    ConsoleAssertionPrinter(std::ostream& _stream, AssertionStats const& _stats, bool _printInfoMessages)
+        : stream(_stream),
+        stats(_stats),
+        result(_stats.assertionResult),
+        colour(Colour::None),
+        message(result.getMessage()),
+        messages(_stats.infoMessages),
+        printInfoMessages(_printInfoMessages) {
+        switch (result.getResultType()) {
+        case ResultWas::Ok:
+            colour = Colour::Success;
+            passOrFail = "PASSED";
+            //if( result.hasMessage() )
+            if (_stats.infoMessages.size() == 1)
+                messageLabel = "with message";
+            if (_stats.infoMessages.size() > 1)
+                messageLabel = "with messages";
+            break;
+        case ResultWas::ExpressionFailed:
+            if (result.isOk()) {
+                colour = Colour::Success;
+                passOrFail = "FAILED - but was ok";
+            } else {
+                colour = Colour::Error;
+                passOrFail = "FAILED";
+            }
+            if (_stats.infoMessages.size() == 1)
+                messageLabel = "with message";
+            if (_stats.infoMessages.size() > 1)
+                messageLabel = "with messages";
+            break;
+        case ResultWas::ThrewException:
+            colour = Colour::Error;
+            passOrFail = "FAILED";
+            messageLabel = "due to unexpected exception with ";
+            if (_stats.infoMessages.size() == 1)
+                messageLabel += "message";
+            if (_stats.infoMessages.size() > 1)
+                messageLabel += "messages";
+            break;
+        case ResultWas::FatalErrorCondition:
+            colour = Colour::Error;
+            passOrFail = "FAILED";
+            messageLabel = "due to a fatal error condition";
+            break;
+        case ResultWas::DidntThrowException:
+            colour = Colour::Error;
+            passOrFail = "FAILED";
+            messageLabel = "because no exception was thrown where one was expected";
+            break;
+        case ResultWas::Info:
+            messageLabel = "info";
+            break;
+        case ResultWas::Warning:
+            messageLabel = "warning";
+            break;
+        case ResultWas::ExplicitFailure:
+            passOrFail = "FAILED";
+            colour = Colour::Error;
+            if (_stats.infoMessages.size() == 1)
+                messageLabel = "explicitly with message";
+            if (_stats.infoMessages.size() > 1)
+                messageLabel = "explicitly with messages";
+            break;
+            // These cases are here to prevent compiler warnings
+        case ResultWas::Unknown:
+        case ResultWas::FailureBit:
+        case ResultWas::Exception:
+            passOrFail = "** internal error **";
+            colour = Colour::Error;
+            break;
+        }
+    }
+
+    void print() const {
+        printSourceInfo();
+        if (stats.totals.assertions.total() > 0) {
+            printResultType();
+            printOriginalExpression();
+            printReconstructedExpression();
+        } else {
+            stream << '\n';
+        }
+        printMessage();
+    }
+
+private:
+    void printResultType() const {
+        if (!passOrFail.empty()) {
+            Colour colourGuard(colour);
+            stream << passOrFail << ":\n";
+        }
+    }
+    void printOriginalExpression() const {
+        if (result.hasExpression()) {
+            Colour colourGuard(Colour::OriginalExpression);
+            stream << "  ";
+            stream << result.getExpressionInMacro();
+            stream << '\n';
+        }
+    }
+    void printReconstructedExpression() const {
+        if (result.hasExpandedExpression()) {
+            stream << "with expansion:\n";
+            Colour colourGuard(Colour::ReconstructedExpression);
+            stream << Column(result.getExpandedExpression()).indent(2) << '\n';
+        }
+    }
+    void printMessage() const {
+        if (!messageLabel.empty())
+            stream << messageLabel << ':' << '\n';
+        for (auto const& msg : messages) {
+            // If this assertion is a warning ignore any INFO messages
+            if (printInfoMessages || msg.type != ResultWas::Info)
+                stream << Column(msg.message).indent(2) << '\n';
+        }
+    }
+    void printSourceInfo() const {
+        Colour colourGuard(Colour::FileName);
+        stream << result.getSourceInfo() << ": ";
+    }
+
+    std::ostream& stream;
+    AssertionStats const& stats;
+    AssertionResult const& result;
+    Colour::Code colour;
+    std::string passOrFail;
+    std::string messageLabel;
+    std::string message;
+    std::vector<MessageInfo> messages;
+    bool printInfoMessages;
+};
+
+std::size_t makeRatio(std::size_t number, std::size_t total) {
+    std::size_t ratio = total > 0 ? CATCH_CONFIG_CONSOLE_WIDTH * number / total : 0;
+    return (ratio == 0 && number > 0) ? 1 : ratio;
+}
+
+std::size_t& findMax(std::size_t& i, std::size_t& j, std::size_t& k) {
+    if (i > j && i > k)
+        return i;
+    else if (j > k)
+        return j;
+    else
+        return k;
+}
+
+struct ColumnInfo {
+    enum Justification { Left, Right };
+    std::string name;
+    int width;
+    Justification justification;
+};
+struct ColumnBreak {};
+struct RowBreak {};
+
+class Duration {
+    enum class Unit {
+        Auto,
+        Nanoseconds,
+        Microseconds,
+        Milliseconds,
+        Seconds,
+        Minutes
+    };
+    static const uint64_t s_nanosecondsInAMicrosecond = 1000;
+    static const uint64_t s_nanosecondsInAMillisecond = 1000 * s_nanosecondsInAMicrosecond;
+    static const uint64_t s_nanosecondsInASecond = 1000 * s_nanosecondsInAMillisecond;
+    static const uint64_t s_nanosecondsInAMinute = 60 * s_nanosecondsInASecond;
+
+    uint64_t m_inNanoseconds;
+    Unit m_units;
+
+public:
+    explicit Duration(uint64_t inNanoseconds, Unit units = Unit::Auto)
+        : m_inNanoseconds(inNanoseconds),
+        m_units(units) {
+        if (m_units == Unit::Auto) {
+            if (m_inNanoseconds < s_nanosecondsInAMicrosecond)
+                m_units = Unit::Nanoseconds;
+            else if (m_inNanoseconds < s_nanosecondsInAMillisecond)
+                m_units = Unit::Microseconds;
+            else if (m_inNanoseconds < s_nanosecondsInASecond)
+                m_units = Unit::Milliseconds;
+            else if (m_inNanoseconds < s_nanosecondsInAMinute)
+                m_units = Unit::Seconds;
+            else
+                m_units = Unit::Minutes;
+        }
+
+    }
+
+    auto value() const -> double {
+        switch (m_units) {
+        case Unit::Microseconds:
+            return m_inNanoseconds / static_cast<double>(s_nanosecondsInAMicrosecond);
+        case Unit::Milliseconds:
+            return m_inNanoseconds / static_cast<double>(s_nanosecondsInAMillisecond);
+        case Unit::Seconds:
+            return m_inNanoseconds / static_cast<double>(s_nanosecondsInASecond);
+        case Unit::Minutes:
+            return m_inNanoseconds / static_cast<double>(s_nanosecondsInAMinute);
+        default:
+            return static_cast<double>(m_inNanoseconds);
+        }
+    }
+    auto unitsAsString() const -> std::string {
+        switch (m_units) {
+        case Unit::Nanoseconds:
+            return "ns";
+        case Unit::Microseconds:
+            return "µs";
+        case Unit::Milliseconds:
+            return "ms";
+        case Unit::Seconds:
+            return "s";
+        case Unit::Minutes:
+            return "m";
+        default:
+            return "** internal error **";
+        }
+
+    }
+    friend auto operator << (std::ostream& os, Duration const& duration) -> std::ostream& {
+        return os << duration.value() << " " << duration.unitsAsString();
+    }
+};
+} // end anon namespace
+
+class TablePrinter {
+    std::ostream& m_os;
+    std::vector<ColumnInfo> m_columnInfos;
+    std::ostringstream m_oss;
+    int m_currentColumn = -1;
+    bool m_isOpen = false;
+
+public:
+    TablePrinter( std::ostream& os, std::vector<ColumnInfo> columnInfos )
+    :   m_os( os ),
+        m_columnInfos( std::move( columnInfos ) ) {}
+
+    auto columnInfos() const -> std::vector<ColumnInfo> const& {
+        return m_columnInfos;
+    }
+
+    void open() {
+        if (!m_isOpen) {
+            m_isOpen = true;
+            *this << RowBreak();
+            for (auto const& info : m_columnInfos)
+                *this << info.name << ColumnBreak();
+            *this << RowBreak();
+            m_os << Catch::getLineOfChars<'-'>() << "\n";
+        }
+    }
+    void close() {
+        if (m_isOpen) {
+            *this << RowBreak();
+            m_os << std::endl;
+            m_isOpen = false;
+        }
+    }
+
+    template<typename T>
+    friend TablePrinter& operator << (TablePrinter& tp, T const& value) {
+        tp.m_oss << value;
+        return tp;
+    }
+
+    friend TablePrinter& operator << (TablePrinter& tp, ColumnBreak) {
+        auto colStr = tp.m_oss.str();
+        // This takes account of utf8 encodings
+        auto strSize = Catch::StringRef(colStr).numberOfCharacters();
+        tp.m_oss.str("");
+        tp.open();
+        if (tp.m_currentColumn == static_cast<int>(tp.m_columnInfos.size() - 1)) {
+            tp.m_currentColumn = -1;
+            tp.m_os << "\n";
+        }
+        tp.m_currentColumn++;
+
+        auto colInfo = tp.m_columnInfos[tp.m_currentColumn];
+        auto padding = (strSize + 2 < static_cast<std::size_t>(colInfo.width))
+            ? std::string(colInfo.width - (strSize + 2), ' ')
+            : std::string();
+        if (colInfo.justification == ColumnInfo::Left)
+            tp.m_os << colStr << padding << " ";
+        else
+            tp.m_os << padding << colStr << " ";
+        return tp;
+    }
+
+    friend TablePrinter& operator << (TablePrinter& tp, RowBreak) {
+        if (tp.m_currentColumn > 0) {
+            tp.m_os << "\n";
+            tp.m_currentColumn = -1;
+        }
+        return tp;
+    }
+};
+
+ConsoleReporter::ConsoleReporter(ReporterConfig const& config)
+    : StreamingReporterBase(config),
+    m_tablePrinter(new TablePrinter(config.stream(),
+    {
+        { "benchmark name", CATCH_CONFIG_CONSOLE_WIDTH - 32, ColumnInfo::Left },
+        { "iters", 8, ColumnInfo::Right },
+        { "elapsed ns", 14, ColumnInfo::Right },
+        { "average", 14, ColumnInfo::Right }
+    })) {}
+ConsoleReporter::~ConsoleReporter() = default;
+
+std::string ConsoleReporter::getDescription() {
+    return "Reports test results as plain lines of text";
+}
+
+void ConsoleReporter::noMatchingTestCases(std::string const& spec) {
+    stream << "No test cases matched '" << spec << '\'' << std::endl;
+}
+
+void ConsoleReporter::assertionStarting(AssertionInfo const&) {}
+
+bool ConsoleReporter::assertionEnded(AssertionStats const& _assertionStats) {
+    AssertionResult const& result = _assertionStats.assertionResult;
+
+    bool includeResults = m_config->includeSuccessfulResults() || !result.isOk();
+
+    // Drop out if result was successful but we're not printing them.
+    if (!includeResults && result.getResultType() != ResultWas::Warning)
+        return false;
+
+    lazyPrint();
+
+    ConsoleAssertionPrinter printer(stream, _assertionStats, includeResults);
+    printer.print();
+    stream << std::endl;
+    return true;
+}
+
+void ConsoleReporter::sectionStarting(SectionInfo const& _sectionInfo) {
+    m_headerPrinted = false;
+    StreamingReporterBase::sectionStarting(_sectionInfo);
+}
+void ConsoleReporter::sectionEnded(SectionStats const& _sectionStats) {
+    m_tablePrinter->close();
+    if (_sectionStats.missingAssertions) {
+        lazyPrint();
+        Colour colour(Colour::ResultError);
+        if (m_sectionStack.size() > 1)
+            stream << "\nNo assertions in section";
+        else
+            stream << "\nNo assertions in test case";
+        stream << " '" << _sectionStats.sectionInfo.name << "'\n" << std::endl;
+    }
+    if (m_config->showDurations() == ShowDurations::Always) {
+        stream << getFormattedDuration(_sectionStats.durationInSeconds) << " s: " << _sectionStats.sectionInfo.name << std::endl;
+    }
+    if (m_headerPrinted) {
+        m_headerPrinted = false;
+    }
+    StreamingReporterBase::sectionEnded(_sectionStats);
+}
+
+void ConsoleReporter::benchmarkStarting(BenchmarkInfo const& info) {
+    lazyPrintWithoutClosingBenchmarkTable();
+
+    auto nameCol = Column( info.name ).width( static_cast<std::size_t>( m_tablePrinter->columnInfos()[0].width - 2 ) );
+
+    bool firstLine = true;
+    for (auto line : nameCol) {
+        if (!firstLine)
+            (*m_tablePrinter) << ColumnBreak() << ColumnBreak() << ColumnBreak();
+        else
+            firstLine = false;
+
+        (*m_tablePrinter) << line << ColumnBreak();
+    }
+}
+void ConsoleReporter::benchmarkEnded(BenchmarkStats const& stats) {
+    Duration average(stats.elapsedTimeInNanoseconds / stats.iterations);
+    (*m_tablePrinter)
+        << stats.iterations << ColumnBreak()
+        << stats.elapsedTimeInNanoseconds << ColumnBreak()
+        << average << ColumnBreak();
+}
+
+void ConsoleReporter::testCaseEnded(TestCaseStats const& _testCaseStats) {
+    m_tablePrinter->close();
+    StreamingReporterBase::testCaseEnded(_testCaseStats);
+    m_headerPrinted = false;
+}
+void ConsoleReporter::testGroupEnded(TestGroupStats const& _testGroupStats) {
+    if (currentGroupInfo.used) {
+        printSummaryDivider();
+        stream << "Summary for group '" << _testGroupStats.groupInfo.name << "':\n";
+        printTotals(_testGroupStats.totals);
+        stream << '\n' << std::endl;
+    }
+    StreamingReporterBase::testGroupEnded(_testGroupStats);
+}
+void ConsoleReporter::testRunEnded(TestRunStats const& _testRunStats) {
+    printTotalsDivider(_testRunStats.totals);
+    printTotals(_testRunStats.totals);
+    stream << std::endl;
+    StreamingReporterBase::testRunEnded(_testRunStats);
+}
+
+void ConsoleReporter::lazyPrint() {
+
+    m_tablePrinter->close();
+    lazyPrintWithoutClosingBenchmarkTable();
+}
+
+void ConsoleReporter::lazyPrintWithoutClosingBenchmarkTable() {
+
+    if (!currentTestRunInfo.used)
+        lazyPrintRunInfo();
+    if (!currentGroupInfo.used)
+        lazyPrintGroupInfo();
+
+    if (!m_headerPrinted) {
+        printTestCaseAndSectionHeader();
+        m_headerPrinted = true;
+    }
+}
+void ConsoleReporter::lazyPrintRunInfo() {
+    stream << '\n' << getLineOfChars<'~'>() << '\n';
+    Colour colour(Colour::SecondaryText);
+    stream << currentTestRunInfo->name
+        << " is a Catch v" << libraryVersion() << " host application.\n"
+        << "Run with -? for options\n\n";
+
+    if (m_config->rngSeed() != 0)
+        stream << "Randomness seeded to: " << m_config->rngSeed() << "\n\n";
+
+    currentTestRunInfo.used = true;
+}
+void ConsoleReporter::lazyPrintGroupInfo() {
+    if (!currentGroupInfo->name.empty() && currentGroupInfo->groupsCounts > 1) {
+        printClosedHeader("Group: " + currentGroupInfo->name);
+        currentGroupInfo.used = true;
+    }
+}
+void ConsoleReporter::printTestCaseAndSectionHeader() {
+    assert(!m_sectionStack.empty());
+    printOpenHeader(currentTestCaseInfo->name);
+
+    if (m_sectionStack.size() > 1) {
+        Colour colourGuard(Colour::Headers);
+
+        auto
+            it = m_sectionStack.begin() + 1, // Skip first section (test case)
+            itEnd = m_sectionStack.end();
+        for (; it != itEnd; ++it)
+            printHeaderString(it->name, 2);
+    }
+
+    SourceLineInfo lineInfo = m_sectionStack.back().lineInfo;
+
+    if (!lineInfo.empty()) {
+        stream << getLineOfChars<'-'>() << '\n';
+        Colour colourGuard(Colour::FileName);
+        stream << lineInfo << '\n';
+    }
+    stream << getLineOfChars<'.'>() << '\n' << std::endl;
+}
+
+void ConsoleReporter::printClosedHeader(std::string const& _name) {
+    printOpenHeader(_name);
+    stream << getLineOfChars<'.'>() << '\n';
+}
+void ConsoleReporter::printOpenHeader(std::string const& _name) {
+    stream << getLineOfChars<'-'>() << '\n';
+    {
+        Colour colourGuard(Colour::Headers);
+        printHeaderString(_name);
+    }
+}
+
+// if string has a : in first line will set indent to follow it on
+// subsequent lines
+void ConsoleReporter::printHeaderString(std::string const& _string, std::size_t indent) {
+    std::size_t i = _string.find(": ");
+    if (i != std::string::npos)
+        i += 2;
+    else
+        i = 0;
+    stream << Column(_string).indent(indent + i).initialIndent(indent) << '\n';
+}
+
+struct SummaryColumn {
+
+    SummaryColumn( std::string _label, Colour::Code _colour )
+    :   label( std::move( _label ) ),
+        colour( _colour ) {}
+    SummaryColumn addRow( std::size_t count ) {
+        ReusableStringStream rss;
+        rss << count;
+        std::string row = rss.str();
+        for (auto& oldRow : rows) {
+            while (oldRow.size() < row.size())
+                oldRow = ' ' + oldRow;
+            while (oldRow.size() > row.size())
+                row = ' ' + row;
+        }
+        rows.push_back(row);
+        return *this;
+    }
+
+    std::string label;
+    Colour::Code colour;
+    std::vector<std::string> rows;
+
+};
+
+void ConsoleReporter::printTotals( Totals const& totals ) {
+    if (totals.testCases.total() == 0) {
+        stream << Colour(Colour::Warning) << "No tests ran\n";
+    } else if (totals.assertions.total() > 0 && totals.testCases.allPassed()) {
+        stream << Colour(Colour::ResultSuccess) << "All tests passed";
+        stream << " ("
+            << pluralise(totals.assertions.passed, "assertion") << " in "
+            << pluralise(totals.testCases.passed, "test case") << ')'
+            << '\n';
+    } else {
+
+        std::vector<SummaryColumn> columns;
+        columns.push_back(SummaryColumn("", Colour::None)
+                          .addRow(totals.testCases.total())
+                          .addRow(totals.assertions.total()));
+        columns.push_back(SummaryColumn("passed", Colour::Success)
+                          .addRow(totals.testCases.passed)
+                          .addRow(totals.assertions.passed));
+        columns.push_back(SummaryColumn("failed", Colour::ResultError)
+                          .addRow(totals.testCases.failed)
+                          .addRow(totals.assertions.failed));
+        columns.push_back(SummaryColumn("failed as expected", Colour::ResultExpectedFailure)
+                          .addRow(totals.testCases.failedButOk)
+                          .addRow(totals.assertions.failedButOk));
+
+        printSummaryRow("test cases", columns, 0);
+        printSummaryRow("assertions", columns, 1);
+    }
+}
+void ConsoleReporter::printSummaryRow(std::string const& label, std::vector<SummaryColumn> const& cols, std::size_t row) {
+    for (auto col : cols) {
+        std::string value = col.rows[row];
+        if (col.label.empty()) {
+            stream << label << ": ";
+            if (value != "0")
+                stream << value;
+            else
+                stream << Colour(Colour::Warning) << "- none -";
+        } else if (value != "0") {
+            stream << Colour(Colour::LightGrey) << " | ";
+            stream << Colour(col.colour)
+                << value << ' ' << col.label;
+        }
+    }
+    stream << '\n';
+}
+
+void ConsoleReporter::printTotalsDivider(Totals const& totals) {
+    if (totals.testCases.total() > 0) {
+        std::size_t failedRatio = makeRatio(totals.testCases.failed, totals.testCases.total());
+        std::size_t failedButOkRatio = makeRatio(totals.testCases.failedButOk, totals.testCases.total());
+        std::size_t passedRatio = makeRatio(totals.testCases.passed, totals.testCases.total());
+        while (failedRatio + failedButOkRatio + passedRatio < CATCH_CONFIG_CONSOLE_WIDTH - 1)
+            findMax(failedRatio, failedButOkRatio, passedRatio)++;
+        while (failedRatio + failedButOkRatio + passedRatio > CATCH_CONFIG_CONSOLE_WIDTH - 1)
+            findMax(failedRatio, failedButOkRatio, passedRatio)--;
+
+        stream << Colour(Colour::Error) << std::string(failedRatio, '=');
+        stream << Colour(Colour::ResultExpectedFailure) << std::string(failedButOkRatio, '=');
+        if (totals.testCases.allPassed())
+            stream << Colour(Colour::ResultSuccess) << std::string(passedRatio, '=');
+        else
+            stream << Colour(Colour::Success) << std::string(passedRatio, '=');
+    } else {
+        stream << Colour(Colour::Warning) << std::string(CATCH_CONFIG_CONSOLE_WIDTH - 1, '=');
+    }
+    stream << '\n';
+}
+void ConsoleReporter::printSummaryDivider() {
+    stream << getLineOfChars<'-'>() << '\n';
+}
+
+CATCH_REGISTER_REPORTER("console", ConsoleReporter)
+
+} // end namespace Catch
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+// end catch_reporter_console.cpp
+// start catch_reporter_junit.cpp
+
+#include <cassert>
+#include <sstream>
+#include <ctime>
+#include <algorithm>
+
+namespace Catch {
+
+    namespace {
+        std::string getCurrentTimestamp() {
+            // Beware, this is not reentrant because of backward compatibility issues
+            // Also, UTC only, again because of backward compatibility (%z is C++11)
+            time_t rawtime;
+            std::time(&rawtime);
+            auto const timeStampSize = sizeof("2017-01-16T17:06:45Z");
+
+#ifdef _MSC_VER
+            std::tm timeInfo = {};
+            gmtime_s(&timeInfo, &rawtime);
+#else
+            std::tm* timeInfo;
+            timeInfo = std::gmtime(&rawtime);
+#endif
+
+            char timeStamp[timeStampSize];
+            const char * const fmt = "%Y-%m-%dT%H:%M:%SZ";
+
+#ifdef _MSC_VER
+            std::strftime(timeStamp, timeStampSize, fmt, &timeInfo);
+#else
+            std::strftime(timeStamp, timeStampSize, fmt, timeInfo);
+#endif
+            return std::string(timeStamp);
+        }
+
+        std::string fileNameTag(const std::vector<std::string> &tags) {
+            auto it = std::find_if(begin(tags),
+                                   end(tags),
+                                   [] (std::string const& tag) {return tag.front() == '#'; });
+            if (it != tags.end())
+                return it->substr(1);
+            return std::string();
+        }
+    } // anonymous namespace
+
+    JunitReporter::JunitReporter( ReporterConfig const& _config )
+        :   CumulativeReporterBase( _config ),
+            xml( _config.stream() )
+        {
+            m_reporterPrefs.shouldRedirectStdOut = true;
+            m_reporterPrefs.shouldReportAllAssertions = true;
+        }
+
+    JunitReporter::~JunitReporter() {}
+
+    std::string JunitReporter::getDescription() {
+        return "Reports test results in an XML format that looks like Ant's junitreport target";
+    }
+
+    void JunitReporter::noMatchingTestCases( std::string const& /*spec*/ ) {}
+
+    void JunitReporter::testRunStarting( TestRunInfo const& runInfo )  {
+        CumulativeReporterBase::testRunStarting( runInfo );
+        xml.startElement( "testsuites" );
+    }
+
+    void JunitReporter::testGroupStarting( GroupInfo const& groupInfo ) {
+        suiteTimer.start();
+        stdOutForSuite.clear();
+        stdErrForSuite.clear();
+        unexpectedExceptions = 0;
+        CumulativeReporterBase::testGroupStarting( groupInfo );
+    }
+
+    void JunitReporter::testCaseStarting( TestCaseInfo const& testCaseInfo ) {
+        m_okToFail = testCaseInfo.okToFail();
+    }
+
+    bool JunitReporter::assertionEnded( AssertionStats const& assertionStats ) {
+        if( assertionStats.assertionResult.getResultType() == ResultWas::ThrewException && !m_okToFail )
+            unexpectedExceptions++;
+        return CumulativeReporterBase::assertionEnded( assertionStats );
+    }
+
+    void JunitReporter::testCaseEnded( TestCaseStats const& testCaseStats ) {
+        stdOutForSuite += testCaseStats.stdOut;
+        stdErrForSuite += testCaseStats.stdErr;
+        CumulativeReporterBase::testCaseEnded( testCaseStats );
+    }
+
+    void JunitReporter::testGroupEnded( TestGroupStats const& testGroupStats ) {
+        double suiteTime = suiteTimer.getElapsedSeconds();
+        CumulativeReporterBase::testGroupEnded( testGroupStats );
+        writeGroup( *m_testGroups.back(), suiteTime );
+    }
+
+    void JunitReporter::testRunEndedCumulative() {
+        xml.endElement();
+    }
+
+    void JunitReporter::writeGroup( TestGroupNode const& groupNode, double suiteTime ) {
+        XmlWriter::ScopedElement e = xml.scopedElement( "testsuite" );
+        TestGroupStats const& stats = groupNode.value;
+        xml.writeAttribute( "name", stats.groupInfo.name );
+        xml.writeAttribute( "errors", unexpectedExceptions );
+        xml.writeAttribute( "failures", stats.totals.assertions.failed-unexpectedExceptions );
+        xml.writeAttribute( "tests", stats.totals.assertions.total() );
+        xml.writeAttribute( "hostname", "tbd" ); // !TBD
+        if( m_config->showDurations() == ShowDurations::Never )
+            xml.writeAttribute( "time", "" );
+        else
+            xml.writeAttribute( "time", suiteTime );
+        xml.writeAttribute( "timestamp", getCurrentTimestamp() );
+
+        // Write test cases
+        for( auto const& child : groupNode.children )
+            writeTestCase( *child );
+
+        xml.scopedElement( "system-out" ).writeText( trim( stdOutForSuite ), false );
+        xml.scopedElement( "system-err" ).writeText( trim( stdErrForSuite ), false );
+    }
+
+    void JunitReporter::writeTestCase( TestCaseNode const& testCaseNode ) {
+        TestCaseStats const& stats = testCaseNode.value;
+
+        // All test cases have exactly one section - which represents the
+        // test case itself. That section may have 0-n nested sections
+        assert( testCaseNode.children.size() == 1 );
+        SectionNode const& rootSection = *testCaseNode.children.front();
+
+        std::string className = stats.testInfo.className;
+
+        if( className.empty() ) {
+            className = fileNameTag(stats.testInfo.tags);
+            if ( className.empty() )
+                className = "global";
+        }
+
+        if ( !m_config->name().empty() )
+            className = m_config->name() + "." + className;
+
+        writeSection( className, "", rootSection );
+    }
+
+    void JunitReporter::writeSection(  std::string const& className,
+                        std::string const& rootName,
+                        SectionNode const& sectionNode ) {
+        std::string name = trim( sectionNode.stats.sectionInfo.name );
+        if( !rootName.empty() )
+            name = rootName + '/' + name;
+
+        if( !sectionNode.assertions.empty() ||
+            !sectionNode.stdOut.empty() ||
+            !sectionNode.stdErr.empty() ) {
+            XmlWriter::ScopedElement e = xml.scopedElement( "testcase" );
+            if( className.empty() ) {
+                xml.writeAttribute( "classname", name );
+                xml.writeAttribute( "name", "root" );
+            }
+            else {
+                xml.writeAttribute( "classname", className );
+                xml.writeAttribute( "name", name );
+            }
+            xml.writeAttribute( "time", ::Catch::Detail::stringify( sectionNode.stats.durationInSeconds ) );
+
+            writeAssertions( sectionNode );
+
+            if( !sectionNode.stdOut.empty() )
+                xml.scopedElement( "system-out" ).writeText( trim( sectionNode.stdOut ), false );
+            if( !sectionNode.stdErr.empty() )
+                xml.scopedElement( "system-err" ).writeText( trim( sectionNode.stdErr ), false );
+        }
+        for( auto const& childNode : sectionNode.childSections )
+            if( className.empty() )
+                writeSection( name, "", *childNode );
+            else
+                writeSection( className, name, *childNode );
+    }
+
+    void JunitReporter::writeAssertions( SectionNode const& sectionNode ) {
+        for( auto const& assertion : sectionNode.assertions )
+            writeAssertion( assertion );
+    }
+
+    void JunitReporter::writeAssertion( AssertionStats const& stats ) {
+        AssertionResult const& result = stats.assertionResult;
+        if( !result.isOk() ) {
+            std::string elementName;
+            switch( result.getResultType() ) {
+                case ResultWas::ThrewException:
+                case ResultWas::FatalErrorCondition:
+                    elementName = "error";
+                    break;
+                case ResultWas::ExplicitFailure:
+                    elementName = "failure";
+                    break;
+                case ResultWas::ExpressionFailed:
+                    elementName = "failure";
+                    break;
+                case ResultWas::DidntThrowException:
+                    elementName = "failure";
+                    break;
+
+                // We should never see these here:
+                case ResultWas::Info:
+                case ResultWas::Warning:
+                case ResultWas::Ok:
+                case ResultWas::Unknown:
+                case ResultWas::FailureBit:
+                case ResultWas::Exception:
+                    elementName = "internalError";
+                    break;
+            }
+
+            XmlWriter::ScopedElement e = xml.scopedElement( elementName );
+
+            xml.writeAttribute( "message", result.getExpandedExpression() );
+            xml.writeAttribute( "type", result.getTestMacroName() );
+
+            ReusableStringStream rss;
+            if( !result.getMessage().empty() )
+                rss << result.getMessage() << '\n';
+            for( auto const& msg : stats.infoMessages )
+                if( msg.type == ResultWas::Info )
+                    rss << msg.message << '\n';
+
+            rss << "at " << result.getSourceInfo();
+            xml.writeText( rss.str(), false );
+        }
+    }
+
+    CATCH_REGISTER_REPORTER( "junit", JunitReporter )
+
+} // end namespace Catch
+// end catch_reporter_junit.cpp
+// start catch_reporter_listening.cpp
+
+#include <cassert>
+
+namespace Catch {
+
+    ListeningReporter::ListeningReporter() {
+        // We will assume that listeners will always want all assertions
+        m_preferences.shouldReportAllAssertions = true;
+    }
+
+    void ListeningReporter::addListener( IStreamingReporterPtr&& listener ) {
+        m_listeners.push_back( std::move( listener ) );
+    }
+
+    void ListeningReporter::addReporter(IStreamingReporterPtr&& reporter) {
+        assert(!m_reporter && "Listening reporter can wrap only 1 real reporter");
+        m_reporter = std::move( reporter );
+        m_preferences.shouldRedirectStdOut = m_reporter->getPreferences().shouldRedirectStdOut;
+    }
+
+    ReporterPreferences ListeningReporter::getPreferences() const {
+        return m_preferences;
+    }
+
+    std::set<Verbosity> ListeningReporter::getSupportedVerbosities() {
+        return std::set<Verbosity>{ };
+    }
+
+    void ListeningReporter::noMatchingTestCases( std::string const& spec ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->noMatchingTestCases( spec );
+        }
+        m_reporter->noMatchingTestCases( spec );
+    }
+
+    void ListeningReporter::benchmarkStarting( BenchmarkInfo const& benchmarkInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->benchmarkStarting( benchmarkInfo );
+        }
+        m_reporter->benchmarkStarting( benchmarkInfo );
+    }
+    void ListeningReporter::benchmarkEnded( BenchmarkStats const& benchmarkStats ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->benchmarkEnded( benchmarkStats );
+        }
+        m_reporter->benchmarkEnded( benchmarkStats );
+    }
+
+    void ListeningReporter::testRunStarting( TestRunInfo const& testRunInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testRunStarting( testRunInfo );
+        }
+        m_reporter->testRunStarting( testRunInfo );
+    }
+
+    void ListeningReporter::testGroupStarting( GroupInfo const& groupInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testGroupStarting( groupInfo );
+        }
+        m_reporter->testGroupStarting( groupInfo );
+    }
+
+    void ListeningReporter::testCaseStarting( TestCaseInfo const& testInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testCaseStarting( testInfo );
+        }
+        m_reporter->testCaseStarting( testInfo );
+    }
+
+    void ListeningReporter::sectionStarting( SectionInfo const& sectionInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->sectionStarting( sectionInfo );
+        }
+        m_reporter->sectionStarting( sectionInfo );
+    }
+
+    void ListeningReporter::assertionStarting( AssertionInfo const& assertionInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->assertionStarting( assertionInfo );
+        }
+        m_reporter->assertionStarting( assertionInfo );
+    }
+
+    // The return value indicates if the messages buffer should be cleared:
+    bool ListeningReporter::assertionEnded( AssertionStats const& assertionStats ) {
+        for( auto const& listener : m_listeners ) {
+            static_cast<void>( listener->assertionEnded( assertionStats ) );
+        }
+        return m_reporter->assertionEnded( assertionStats );
+    }
+
+    void ListeningReporter::sectionEnded( SectionStats const& sectionStats ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->sectionEnded( sectionStats );
+        }
+        m_reporter->sectionEnded( sectionStats );
+    }
+
+    void ListeningReporter::testCaseEnded( TestCaseStats const& testCaseStats ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testCaseEnded( testCaseStats );
+        }
+        m_reporter->testCaseEnded( testCaseStats );
+    }
+
+    void ListeningReporter::testGroupEnded( TestGroupStats const& testGroupStats ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testGroupEnded( testGroupStats );
+        }
+        m_reporter->testGroupEnded( testGroupStats );
+    }
+
+    void ListeningReporter::testRunEnded( TestRunStats const& testRunStats ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->testRunEnded( testRunStats );
+        }
+        m_reporter->testRunEnded( testRunStats );
+    }
+
+    void ListeningReporter::skipTest( TestCaseInfo const& testInfo ) {
+        for ( auto const& listener : m_listeners ) {
+            listener->skipTest( testInfo );
+        }
+        m_reporter->skipTest( testInfo );
+    }
+
+    bool ListeningReporter::isMulti() const {
+        return true;
+    }
+
+} // end namespace Catch
+// end catch_reporter_listening.cpp
+// start catch_reporter_xml.cpp
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4061) // Not all labels are EXPLICITLY handled in switch
+                              // Note that 4062 (not all labels are handled
+                              // and default is missing) is enabled
+#endif
+
+namespace Catch {
+    XmlReporter::XmlReporter( ReporterConfig const& _config )
+    :   StreamingReporterBase( _config ),
+        m_xml(_config.stream())
+    {
+        m_reporterPrefs.shouldRedirectStdOut = true;
+        m_reporterPrefs.shouldReportAllAssertions = true;
+    }
+
+    XmlReporter::~XmlReporter() = default;
+
+    std::string XmlReporter::getDescription() {
+        return "Reports test results as an XML document";
+    }
+
+    std::string XmlReporter::getStylesheetRef() const {
+        return std::string();
+    }
+
+    void XmlReporter::writeSourceInfo( SourceLineInfo const& sourceInfo ) {
+        m_xml
+            .writeAttribute( "filename", sourceInfo.file )
+            .writeAttribute( "line", sourceInfo.line );
+    }
+
+    void XmlReporter::noMatchingTestCases( std::string const& s ) {
+        StreamingReporterBase::noMatchingTestCases( s );
+    }
+
+    void XmlReporter::testRunStarting( TestRunInfo const& testInfo ) {
+        StreamingReporterBase::testRunStarting( testInfo );
+        std::string stylesheetRef = getStylesheetRef();
+        if( !stylesheetRef.empty() )
+            m_xml.writeStylesheetRef( stylesheetRef );
+        m_xml.startElement( "Catch" );
+        if( !m_config->name().empty() )
+            m_xml.writeAttribute( "name", m_config->name() );
+        if( m_config->rngSeed() != 0 )
+            m_xml.scopedElement( "Randomness" )
+                .writeAttribute( "seed", m_config->rngSeed() );
+    }
+
+    void XmlReporter::testGroupStarting( GroupInfo const& groupInfo ) {
+        StreamingReporterBase::testGroupStarting( groupInfo );
+        m_xml.startElement( "Group" )
+            .writeAttribute( "name", groupInfo.name );
+    }
+
+    void XmlReporter::testCaseStarting( TestCaseInfo const& testInfo ) {
+        StreamingReporterBase::testCaseStarting(testInfo);
+        m_xml.startElement( "TestCase" )
+            .writeAttribute( "name", trim( testInfo.name ) )
+            .writeAttribute( "description", testInfo.description )
+            .writeAttribute( "tags", testInfo.tagsAsString() );
+
+        writeSourceInfo( testInfo.lineInfo );
+
+        if ( m_config->showDurations() == ShowDurations::Always )
+            m_testCaseTimer.start();
+        m_xml.ensureTagClosed();
+    }
+
+    void XmlReporter::sectionStarting( SectionInfo const& sectionInfo ) {
+        StreamingReporterBase::sectionStarting( sectionInfo );
+        if( m_sectionDepth++ > 0 ) {
+            m_xml.startElement( "Section" )
+                .writeAttribute( "name", trim( sectionInfo.name ) );
+            writeSourceInfo( sectionInfo.lineInfo );
+            m_xml.ensureTagClosed();
+        }
+    }
+
+    void XmlReporter::assertionStarting( AssertionInfo const& ) { }
+
+    bool XmlReporter::assertionEnded( AssertionStats const& assertionStats ) {
+
+        AssertionResult const& result = assertionStats.assertionResult;
+
+        bool includeResults = m_config->includeSuccessfulResults() || !result.isOk();
+
+        if( includeResults || result.getResultType() == ResultWas::Warning ) {
+            // Print any info messages in <Info> tags.
+            for( auto const& msg : assertionStats.infoMessages ) {
+                if( msg.type == ResultWas::Info && includeResults ) {
+                    m_xml.scopedElement( "Info" )
+                            .writeText( msg.message );
+                } else if ( msg.type == ResultWas::Warning ) {
+                    m_xml.scopedElement( "Warning" )
+                            .writeText( msg.message );
+                }
+            }
+        }
+
+        // Drop out if result was successful but we're not printing them.
+        if( !includeResults && result.getResultType() != ResultWas::Warning )
+            return true;
+
+        // Print the expression if there is one.
+        if( result.hasExpression() ) {
+            m_xml.startElement( "Expression" )
+                .writeAttribute( "success", result.succeeded() )
+                .writeAttribute( "type", result.getTestMacroName() );
+
+            writeSourceInfo( result.getSourceInfo() );
+
+            m_xml.scopedElement( "Original" )
+                .writeText( result.getExpression() );
+            m_xml.scopedElement( "Expanded" )
+                .writeText( result.getExpandedExpression() );
+        }
+
+        // And... Print a result applicable to each result type.
+        switch( result.getResultType() ) {
+            case ResultWas::ThrewException:
+                m_xml.startElement( "Exception" );
+                writeSourceInfo( result.getSourceInfo() );
+                m_xml.writeText( result.getMessage() );
+                m_xml.endElement();
+                break;
+            case ResultWas::FatalErrorCondition:
+                m_xml.startElement( "FatalErrorCondition" );
+                writeSourceInfo( result.getSourceInfo() );
+                m_xml.writeText( result.getMessage() );
+                m_xml.endElement();
+                break;
+            case ResultWas::Info:
+                m_xml.scopedElement( "Info" )
+                    .writeText( result.getMessage() );
+                break;
+            case ResultWas::Warning:
+                // Warning will already have been written
+                break;
+            case ResultWas::ExplicitFailure:
+                m_xml.startElement( "Failure" );
+                writeSourceInfo( result.getSourceInfo() );
+                m_xml.writeText( result.getMessage() );
+                m_xml.endElement();
+                break;
+            default:
+                break;
+        }
+
+        if( result.hasExpression() )
+            m_xml.endElement();
+
+        return true;
+    }
+
+    void XmlReporter::sectionEnded( SectionStats const& sectionStats ) {
+        StreamingReporterBase::sectionEnded( sectionStats );
+        if( --m_sectionDepth > 0 ) {
+            XmlWriter::ScopedElement e = m_xml.scopedElement( "OverallResults" );
+            e.writeAttribute( "successes", sectionStats.assertions.passed );
+            e.writeAttribute( "failures", sectionStats.assertions.failed );
+            e.writeAttribute( "expectedFailures", sectionStats.assertions.failedButOk );
+
+            if ( m_config->showDurations() == ShowDurations::Always )
+                e.writeAttribute( "durationInSeconds", sectionStats.durationInSeconds );
+
+            m_xml.endElement();
+        }
+    }
+
+    void XmlReporter::testCaseEnded( TestCaseStats const& testCaseStats ) {
+        StreamingReporterBase::testCaseEnded( testCaseStats );
+        XmlWriter::ScopedElement e = m_xml.scopedElement( "OverallResult" );
+        e.writeAttribute( "success", testCaseStats.totals.assertions.allOk() );
+
+        if ( m_config->showDurations() == ShowDurations::Always )
+            e.writeAttribute( "durationInSeconds", m_testCaseTimer.getElapsedSeconds() );
+
+        if( !testCaseStats.stdOut.empty() )
+            m_xml.scopedElement( "StdOut" ).writeText( trim( testCaseStats.stdOut ), false );
+        if( !testCaseStats.stdErr.empty() )
+            m_xml.scopedElement( "StdErr" ).writeText( trim( testCaseStats.stdErr ), false );
+
+        m_xml.endElement();
+    }
+
+    void XmlReporter::testGroupEnded( TestGroupStats const& testGroupStats ) {
+        StreamingReporterBase::testGroupEnded( testGroupStats );
+        // TODO: Check testGroupStats.aborting and act accordingly.
+        m_xml.scopedElement( "OverallResults" )
+            .writeAttribute( "successes", testGroupStats.totals.assertions.passed )
+            .writeAttribute( "failures", testGroupStats.totals.assertions.failed )
+            .writeAttribute( "expectedFailures", testGroupStats.totals.assertions.failedButOk );
+        m_xml.endElement();
+    }
+
+    void XmlReporter::testRunEnded( TestRunStats const& testRunStats ) {
+        StreamingReporterBase::testRunEnded( testRunStats );
+        m_xml.scopedElement( "OverallResults" )
+            .writeAttribute( "successes", testRunStats.totals.assertions.passed )
+            .writeAttribute( "failures", testRunStats.totals.assertions.failed )
+            .writeAttribute( "expectedFailures", testRunStats.totals.assertions.failedButOk );
+        m_xml.endElement();
+    }
+
+    CATCH_REGISTER_REPORTER( "xml", XmlReporter )
+
+} // end namespace Catch
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+// end catch_reporter_xml.cpp
+
+namespace Catch {
+    LeakDetector leakDetector;
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// end catch_impl.hpp
+#endif
+
+#ifdef CATCH_CONFIG_MAIN
+// start catch_default_main.hpp
+
+#ifndef __OBJC__
+
+#if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(_UNICODE) && !defined(DO_NOT_USE_WMAIN)
+// Standard C/C++ Win32 Unicode wmain entry point
+extern "C" int wmain (int argc, wchar_t * argv[], wchar_t * []) {
+#else
+// Standard C/C++ main entry point
+int main (int argc, char * argv[]) {
+#endif
+
+    return Catch::Session().run( argc, argv );
+}
+
+#else // __OBJC__
+
+// Objective-C entry point
+int main (int argc, char * const argv[]) {
+#if !CATCH_ARC_ENABLED
+    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
+#endif
+
+    Catch::registerTestMethods();
+    int result = Catch::Session().run( argc, (char**)argv );
+
+#if !CATCH_ARC_ENABLED
+    [pool drain];
+#endif
+
+    return result;
+}
+
+#endif // __OBJC__
+
+// end catch_default_main.hpp
+#endif
+
+#if !defined(CATCH_CONFIG_IMPL_ONLY)
+
+#ifdef CLARA_CONFIG_MAIN_NOT_DEFINED
+#  undef CLARA_CONFIG_MAIN
+#endif
+
+#if !defined(CATCH_CONFIG_DISABLE)
+//////
+// If this config identifier is defined then all CATCH macros are prefixed with CATCH_
+#ifdef CATCH_CONFIG_PREFIX_ALL
+
+#define CATCH_REQUIRE( ... ) INTERNAL_CATCH_TEST( "CATCH_REQUIRE", Catch::ResultDisposition::Normal, __VA_ARGS__ )
+#define CATCH_REQUIRE_FALSE( ... ) INTERNAL_CATCH_TEST( "CATCH_REQUIRE_FALSE", Catch::ResultDisposition::Normal | Catch::ResultDisposition::FalseTest, __VA_ARGS__ )
+
+#define CATCH_REQUIRE_THROWS( ... ) INTERNAL_CATCH_THROWS( "CATCH_REQUIRE_THROWS", Catch::ResultDisposition::Normal, "", __VA_ARGS__ )
+#define CATCH_REQUIRE_THROWS_AS( expr, exceptionType ) INTERNAL_CATCH_THROWS_AS( "CATCH_REQUIRE_THROWS_AS", exceptionType, Catch::ResultDisposition::Normal, expr )
+#define CATCH_REQUIRE_THROWS_WITH( expr, matcher ) INTERNAL_CATCH_THROWS_STR_MATCHES( "CATCH_REQUIRE_THROWS_WITH", Catch::ResultDisposition::Normal, matcher, expr )
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_REQUIRE_THROWS_MATCHES( expr, exceptionType, matcher ) INTERNAL_CATCH_THROWS_MATCHES( "CATCH_REQUIRE_THROWS_MATCHES", exceptionType, Catch::ResultDisposition::Normal, matcher, expr )
+#endif// CATCH_CONFIG_DISABLE_MATCHERS
+#define CATCH_REQUIRE_NOTHROW( ... ) INTERNAL_CATCH_NO_THROW( "CATCH_REQUIRE_NOTHROW", Catch::ResultDisposition::Normal, __VA_ARGS__ )
+
+#define CATCH_CHECK( ... ) INTERNAL_CATCH_TEST( "CATCH_CHECK", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CATCH_CHECK_FALSE( ... ) INTERNAL_CATCH_TEST( "CATCH_CHECK_FALSE", Catch::ResultDisposition::ContinueOnFailure | Catch::ResultDisposition::FalseTest, __VA_ARGS__ )
+#define CATCH_CHECKED_IF( ... ) INTERNAL_CATCH_IF( "CATCH_CHECKED_IF", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CATCH_CHECKED_ELSE( ... ) INTERNAL_CATCH_ELSE( "CATCH_CHECKED_ELSE", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CATCH_CHECK_NOFAIL( ... ) INTERNAL_CATCH_TEST( "CATCH_CHECK_NOFAIL", Catch::ResultDisposition::ContinueOnFailure | Catch::ResultDisposition::SuppressFail, __VA_ARGS__ )
+
+#define CATCH_CHECK_THROWS( ... )  INTERNAL_CATCH_THROWS( "CATCH_CHECK_THROWS", Catch::ResultDisposition::ContinueOnFailure, "", __VA_ARGS__ )
+#define CATCH_CHECK_THROWS_AS( expr, exceptionType ) INTERNAL_CATCH_THROWS_AS( "CATCH_CHECK_THROWS_AS", exceptionType, Catch::ResultDisposition::ContinueOnFailure, expr )
+#define CATCH_CHECK_THROWS_WITH( expr, matcher ) INTERNAL_CATCH_THROWS_STR_MATCHES( "CATCH_CHECK_THROWS_WITH", Catch::ResultDisposition::ContinueOnFailure, matcher, expr )
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_CHECK_THROWS_MATCHES( expr, exceptionType, matcher ) INTERNAL_CATCH_THROWS_MATCHES( "CATCH_CHECK_THROWS_MATCHES", exceptionType, Catch::ResultDisposition::ContinueOnFailure, matcher, expr )
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define CATCH_CHECK_NOTHROW( ... ) INTERNAL_CATCH_NO_THROW( "CATCH_CHECK_NOTHROW", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_CHECK_THAT( arg, matcher ) INTERNAL_CHECK_THAT( "CATCH_CHECK_THAT", matcher, Catch::ResultDisposition::ContinueOnFailure, arg )
+
+#define CATCH_REQUIRE_THAT( arg, matcher ) INTERNAL_CHECK_THAT( "CATCH_REQUIRE_THAT", matcher, Catch::ResultDisposition::Normal, arg )
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+
+#define CATCH_INFO( msg ) INTERNAL_CATCH_INFO( "CATCH_INFO", msg )
+#define CATCH_WARN( msg ) INTERNAL_CATCH_MSG( "CATCH_WARN", Catch::ResultWas::Warning, Catch::ResultDisposition::ContinueOnFailure, msg )
+#define CATCH_CAPTURE( ... ) INTERNAL_CATCH_CAPTURE( INTERNAL_CATCH_UNIQUE_NAME(capturer), "CATCH_CAPTURE",__VA_ARGS__ )
+
+#define CATCH_TEST_CASE( ... ) INTERNAL_CATCH_TESTCASE( __VA_ARGS__ )
+#define CATCH_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, __VA_ARGS__ )
+#define CATCH_METHOD_AS_TEST_CASE( method, ... ) INTERNAL_CATCH_METHOD_AS_TEST_CASE( method, __VA_ARGS__ )
+#define CATCH_REGISTER_TEST_CASE( Function, ... ) INTERNAL_CATCH_REGISTER_TESTCASE( Function, __VA_ARGS__ )
+#define CATCH_SECTION( ... ) INTERNAL_CATCH_SECTION( __VA_ARGS__ )
+#define CATCH_DYNAMIC_SECTION( ... ) INTERNAL_CATCH_DYNAMIC_SECTION( __VA_ARGS__ )
+#define CATCH_FAIL( ... ) INTERNAL_CATCH_MSG( "CATCH_FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+#define CATCH_FAIL_CHECK( ... ) INTERNAL_CATCH_MSG( "CATCH_FAIL_CHECK", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CATCH_SUCCEED( ... ) INTERNAL_CATCH_MSG( "CATCH_SUCCEED", Catch::ResultWas::Ok, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+
+#define CATCH_ANON_TEST_CASE() INTERNAL_CATCH_TESTCASE()
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define CATCH_TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE( __VA_ARGS__ )
+#define CATCH_TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( className, __VA_ARGS__ )
+#else
+#define CATCH_TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE( __VA_ARGS__ ) )
+#define CATCH_TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( className, __VA_ARGS__ ) )
+#endif
+
+#if !defined(CATCH_CONFIG_RUNTIME_STATIC_REQUIRE)
+#define CATCH_STATIC_REQUIRE( ... )       static_assert(   __VA_ARGS__ ,      #__VA_ARGS__ );     CATCH_SUCCEED( #__VA_ARGS__ )
+#define CATCH_STATIC_REQUIRE_FALSE( ... ) static_assert( !(__VA_ARGS__), "!(" #__VA_ARGS__ ")" ); CATCH_SUCCEED( #__VA_ARGS__ )
+#else
+#define CATCH_STATIC_REQUIRE( ... )       CATCH_REQUIRE( __VA_ARGS__ )
+#define CATCH_STATIC_REQUIRE_FALSE( ... ) CATCH_REQUIRE_FALSE( __VA_ARGS__ )
+#endif
+
+// "BDD-style" convenience wrappers
+#define CATCH_SCENARIO( ... ) CATCH_TEST_CASE( "Scenario: " __VA_ARGS__ )
+#define CATCH_SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, "Scenario: " __VA_ARGS__ )
+#define CATCH_GIVEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Given: " << desc )
+#define CATCH_AND_GIVEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And given: " << desc )
+#define CATCH_WHEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     When: " << desc )
+#define CATCH_AND_WHEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( " And when: " << desc )
+#define CATCH_THEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     Then: " << desc )
+#define CATCH_AND_THEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( "      And: " << desc )
+
+// If CATCH_CONFIG_PREFIX_ALL is not defined then the CATCH_ prefix is not required
+#else
+
+#define REQUIRE( ... ) INTERNAL_CATCH_TEST( "REQUIRE", Catch::ResultDisposition::Normal, __VA_ARGS__  )
+#define REQUIRE_FALSE( ... ) INTERNAL_CATCH_TEST( "REQUIRE_FALSE", Catch::ResultDisposition::Normal | Catch::ResultDisposition::FalseTest, __VA_ARGS__ )
+
+#define REQUIRE_THROWS( ... ) INTERNAL_CATCH_THROWS( "REQUIRE_THROWS", Catch::ResultDisposition::Normal, __VA_ARGS__ )
+#define REQUIRE_THROWS_AS( expr, exceptionType ) INTERNAL_CATCH_THROWS_AS( "REQUIRE_THROWS_AS", exceptionType, Catch::ResultDisposition::Normal, expr )
+#define REQUIRE_THROWS_WITH( expr, matcher ) INTERNAL_CATCH_THROWS_STR_MATCHES( "REQUIRE_THROWS_WITH", Catch::ResultDisposition::Normal, matcher, expr )
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define REQUIRE_THROWS_MATCHES( expr, exceptionType, matcher ) INTERNAL_CATCH_THROWS_MATCHES( "REQUIRE_THROWS_MATCHES", exceptionType, Catch::ResultDisposition::Normal, matcher, expr )
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define REQUIRE_NOTHROW( ... ) INTERNAL_CATCH_NO_THROW( "REQUIRE_NOTHROW", Catch::ResultDisposition::Normal, __VA_ARGS__ )
+
+#define CHECK( ... ) INTERNAL_CATCH_TEST( "CHECK", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CHECK_FALSE( ... ) INTERNAL_CATCH_TEST( "CHECK_FALSE", Catch::ResultDisposition::ContinueOnFailure | Catch::ResultDisposition::FalseTest, __VA_ARGS__ )
+#define CHECKED_IF( ... ) INTERNAL_CATCH_IF( "CHECKED_IF", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CHECKED_ELSE( ... ) INTERNAL_CATCH_ELSE( "CHECKED_ELSE", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CHECK_NOFAIL( ... ) INTERNAL_CATCH_TEST( "CHECK_NOFAIL", Catch::ResultDisposition::ContinueOnFailure | Catch::ResultDisposition::SuppressFail, __VA_ARGS__ )
+
+#define CHECK_THROWS( ... )  INTERNAL_CATCH_THROWS( "CHECK_THROWS", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define CHECK_THROWS_AS( expr, exceptionType ) INTERNAL_CATCH_THROWS_AS( "CHECK_THROWS_AS", exceptionType, Catch::ResultDisposition::ContinueOnFailure, expr )
+#define CHECK_THROWS_WITH( expr, matcher ) INTERNAL_CATCH_THROWS_STR_MATCHES( "CHECK_THROWS_WITH", Catch::ResultDisposition::ContinueOnFailure, matcher, expr )
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CHECK_THROWS_MATCHES( expr, exceptionType, matcher ) INTERNAL_CATCH_THROWS_MATCHES( "CHECK_THROWS_MATCHES", exceptionType, Catch::ResultDisposition::ContinueOnFailure, matcher, expr )
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define CHECK_NOTHROW( ... ) INTERNAL_CATCH_NO_THROW( "CHECK_NOTHROW", Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CHECK_THAT( arg, matcher ) INTERNAL_CHECK_THAT( "CHECK_THAT", matcher, Catch::ResultDisposition::ContinueOnFailure, arg )
+
+#define REQUIRE_THAT( arg, matcher ) INTERNAL_CHECK_THAT( "REQUIRE_THAT", matcher, Catch::ResultDisposition::Normal, arg )
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+
+#define INFO( msg ) INTERNAL_CATCH_INFO( "INFO", msg )
+#define WARN( msg ) INTERNAL_CATCH_MSG( "WARN", Catch::ResultWas::Warning, Catch::ResultDisposition::ContinueOnFailure, msg )
+#define CAPTURE( ... ) INTERNAL_CATCH_CAPTURE( INTERNAL_CATCH_UNIQUE_NAME(capturer), "CAPTURE",__VA_ARGS__ )
+
+#define TEST_CASE( ... ) INTERNAL_CATCH_TESTCASE( __VA_ARGS__ )
+#define TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, __VA_ARGS__ )
+#define METHOD_AS_TEST_CASE( method, ... ) INTERNAL_CATCH_METHOD_AS_TEST_CASE( method, __VA_ARGS__ )
+#define REGISTER_TEST_CASE( Function, ... ) INTERNAL_CATCH_REGISTER_TESTCASE( Function, __VA_ARGS__ )
+#define SECTION( ... ) INTERNAL_CATCH_SECTION( __VA_ARGS__ )
+#define DYNAMIC_SECTION( ... ) INTERNAL_CATCH_DYNAMIC_SECTION( __VA_ARGS__ )
+#define FAIL( ... ) INTERNAL_CATCH_MSG( "FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+#define FAIL_CHECK( ... ) INTERNAL_CATCH_MSG( "FAIL_CHECK", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define SUCCEED( ... ) INTERNAL_CATCH_MSG( "SUCCEED", Catch::ResultWas::Ok, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
+#define ANON_TEST_CASE() INTERNAL_CATCH_TESTCASE()
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE( __VA_ARGS__ )
+#define TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( className, __VA_ARGS__ )
+#else
+#define TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE( __VA_ARGS__ ) )
+#define TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD( className, __VA_ARGS__ ) )
+#endif
+
+#if !defined(CATCH_CONFIG_RUNTIME_STATIC_REQUIRE)
+#define STATIC_REQUIRE( ... )       static_assert(   __VA_ARGS__,  #__VA_ARGS__ ); SUCCEED( #__VA_ARGS__ )
+#define STATIC_REQUIRE_FALSE( ... ) static_assert( !(__VA_ARGS__), "!(" #__VA_ARGS__ ")" ); SUCCEED( "!(" #__VA_ARGS__ ")" )
+#else
+#define STATIC_REQUIRE( ... )       REQUIRE( __VA_ARGS__ )
+#define STATIC_REQUIRE_FALSE( ... ) REQUIRE_FALSE( __VA_ARGS__ )
+#endif
+
+#endif
+
+#define CATCH_TRANSLATE_EXCEPTION( signature ) INTERNAL_CATCH_TRANSLATE_EXCEPTION( signature )
+
+// "BDD-style" convenience wrappers
+#define SCENARIO( ... ) TEST_CASE( "Scenario: " __VA_ARGS__ )
+#define SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, "Scenario: " __VA_ARGS__ )
+
+#define GIVEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Given: " << desc )
+#define AND_GIVEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And given: " << desc )
+#define WHEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     When: " << desc )
+#define AND_WHEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( " And when: " << desc )
+#define THEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     Then: " << desc )
+#define AND_THEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( "      And: " << desc )
+
+using Catch::Detail::Approx;
+
+#else // CATCH_CONFIG_DISABLE
+
+//////
+// If this config identifier is defined then all CATCH macros are prefixed with CATCH_
+#ifdef CATCH_CONFIG_PREFIX_ALL
+
+#define CATCH_REQUIRE( ... )        (void)(0)
+#define CATCH_REQUIRE_FALSE( ... )  (void)(0)
+
+#define CATCH_REQUIRE_THROWS( ... ) (void)(0)
+#define CATCH_REQUIRE_THROWS_AS( expr, exceptionType ) (void)(0)
+#define CATCH_REQUIRE_THROWS_WITH( expr, matcher )     (void)(0)
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_REQUIRE_THROWS_MATCHES( expr, exceptionType, matcher ) (void)(0)
+#endif// CATCH_CONFIG_DISABLE_MATCHERS
+#define CATCH_REQUIRE_NOTHROW( ... ) (void)(0)
+
+#define CATCH_CHECK( ... )         (void)(0)
+#define CATCH_CHECK_FALSE( ... )   (void)(0)
+#define CATCH_CHECKED_IF( ... )    if (__VA_ARGS__)
+#define CATCH_CHECKED_ELSE( ... )  if (!(__VA_ARGS__))
+#define CATCH_CHECK_NOFAIL( ... )  (void)(0)
+
+#define CATCH_CHECK_THROWS( ... )  (void)(0)
+#define CATCH_CHECK_THROWS_AS( expr, exceptionType ) (void)(0)
+#define CATCH_CHECK_THROWS_WITH( expr, matcher )     (void)(0)
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_CHECK_THROWS_MATCHES( expr, exceptionType, matcher ) (void)(0)
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define CATCH_CHECK_NOTHROW( ... ) (void)(0)
+
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CATCH_CHECK_THAT( arg, matcher )   (void)(0)
+
+#define CATCH_REQUIRE_THAT( arg, matcher ) (void)(0)
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+
+#define CATCH_INFO( msg )    (void)(0)
+#define CATCH_WARN( msg )    (void)(0)
+#define CATCH_CAPTURE( msg ) (void)(0)
+
+#define CATCH_TEST_CASE( ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+#define CATCH_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+#define CATCH_METHOD_AS_TEST_CASE( method, ... )
+#define CATCH_REGISTER_TEST_CASE( Function, ... ) (void)(0)
+#define CATCH_SECTION( ... )
+#define CATCH_DYNAMIC_SECTION( ... )
+#define CATCH_FAIL( ... ) (void)(0)
+#define CATCH_FAIL_CHECK( ... ) (void)(0)
+#define CATCH_SUCCEED( ... ) (void)(0)
+
+#define CATCH_ANON_TEST_CASE() INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define CATCH_TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) )
+#define CATCH_TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), className )
+#else
+#define CATCH_TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) ) )
+#define CATCH_TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), className ) )
+#endif
+
+// "BDD-style" convenience wrappers
+#define CATCH_SCENARIO( ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+#define CATCH_SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), className )
+#define CATCH_GIVEN( desc )
+#define CATCH_AND_GIVEN( desc )
+#define CATCH_WHEN( desc )
+#define CATCH_AND_WHEN( desc )
+#define CATCH_THEN( desc )
+#define CATCH_AND_THEN( desc )
+
+#define CATCH_STATIC_REQUIRE( ... )       (void)(0)
+#define CATCH_STATIC_REQUIRE_FALSE( ... ) (void)(0)
+
+// If CATCH_CONFIG_PREFIX_ALL is not defined then the CATCH_ prefix is not required
+#else
+
+#define REQUIRE( ... )       (void)(0)
+#define REQUIRE_FALSE( ... ) (void)(0)
+
+#define REQUIRE_THROWS( ... ) (void)(0)
+#define REQUIRE_THROWS_AS( expr, exceptionType ) (void)(0)
+#define REQUIRE_THROWS_WITH( expr, matcher ) (void)(0)
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define REQUIRE_THROWS_MATCHES( expr, exceptionType, matcher ) (void)(0)
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define REQUIRE_NOTHROW( ... ) (void)(0)
+
+#define CHECK( ... ) (void)(0)
+#define CHECK_FALSE( ... ) (void)(0)
+#define CHECKED_IF( ... ) if (__VA_ARGS__)
+#define CHECKED_ELSE( ... ) if (!(__VA_ARGS__))
+#define CHECK_NOFAIL( ... ) (void)(0)
+
+#define CHECK_THROWS( ... )  (void)(0)
+#define CHECK_THROWS_AS( expr, exceptionType ) (void)(0)
+#define CHECK_THROWS_WITH( expr, matcher ) (void)(0)
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CHECK_THROWS_MATCHES( expr, exceptionType, matcher ) (void)(0)
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+#define CHECK_NOTHROW( ... ) (void)(0)
+
+#if !defined(CATCH_CONFIG_DISABLE_MATCHERS)
+#define CHECK_THAT( arg, matcher ) (void)(0)
+
+#define REQUIRE_THAT( arg, matcher ) (void)(0)
+#endif // CATCH_CONFIG_DISABLE_MATCHERS
+
+#define INFO( msg ) (void)(0)
+#define WARN( msg ) (void)(0)
+#define CAPTURE( msg ) (void)(0)
+
+#define TEST_CASE( ... )  INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+#define TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+#define METHOD_AS_TEST_CASE( method, ... )
+#define REGISTER_TEST_CASE( Function, ... ) (void)(0)
+#define SECTION( ... )
+#define DYNAMIC_SECTION( ... )
+#define FAIL( ... ) (void)(0)
+#define FAIL_CHECK( ... ) (void)(0)
+#define SUCCEED( ... ) (void)(0)
+#define ANON_TEST_CASE() INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
+
+#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
+#define TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) )
+#define TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), className )
+#else
+#define TEMPLATE_TEST_CASE( ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) ) )
+#define TEMPLATE_TEST_CASE_METHOD( className, ... ) INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), className ) )
+#endif
+
+#define STATIC_REQUIRE( ... )       (void)(0)
+#define STATIC_REQUIRE_FALSE( ... ) (void)(0)
+
+#endif
+
+#define CATCH_TRANSLATE_EXCEPTION( signature ) INTERNAL_CATCH_TRANSLATE_EXCEPTION_NO_REG( INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionTranslator ), signature )
+
+// "BDD-style" convenience wrappers
+#define SCENARIO( ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ) )
+#define SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), className )
+
+#define GIVEN( desc )
+#define AND_GIVEN( desc )
+#define WHEN( desc )
+#define AND_WHEN( desc )
+#define THEN( desc )
+#define AND_THEN( desc )
+
+using Catch::Detail::Approx;
+
+#endif
+
+#endif // ! CATCH_CONFIG_IMPL_ONLY
+
+// start catch_reenable_warnings.h
+
+
+#ifdef __clang__
+#    ifdef __ICC // icpc defines the __clang__ macro
+#        pragma warning(pop)
+#    else
+#        pragma clang diagnostic pop
+#    endif
+#elif defined __GNUC__
+#    pragma GCC diagnostic pop
+#endif
+
+// end catch_reenable_warnings.h
+// end catch.hpp
+#endif // TWOBLUECUBES_SINGLE_INCLUDE_CATCH_HPP_INCLUDED
+
diff --git a/testing/include/nesci/testing/conduit_schema.hpp b/testing/include/nesci/testing/conduit_schema.hpp
index 2e4cc213c64d1a7c60b0891ceddf72ec3a54f926..6184c1a3eeda7541f91baca908d942052c092dee 100644
--- a/testing/include/nesci/testing/conduit_schema.hpp
+++ b/testing/include/nesci/testing/conduit_schema.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -22,43 +22,43 @@
 #ifndef TESTING_INCLUDE_NESCI_TESTING_CONDUIT_SCHEMA_HPP_
 #define TESTING_INCLUDE_NESCI_TESTING_CONDUIT_SCHEMA_HPP_
 
-#include <sstream>
-#include <string>
+// #include <sstream>
+// #include <string>
 
-namespace nesci {
-namespace testing {
-namespace conduit_schema {
+// namespace nesci {
+// namespace testing {
+// namespace conduit_schema {
 
-template <typename T>
-inline std::string OpenTag(T tag) {
-  std::stringstream s;
-  s.precision(5);
-  s << std::fixed << '\"' << tag << '\"' << ":{ \n";
-  return s.str();
-}
+// template <typename T>
+// inline std::string OpenTag(T tag) {
+//   std::stringstream s;
+//   s.precision(5);
+//   s << std::fixed << '\"' << tag << '\"' << ":{ \n";
+//   return s.str();
+// }
 
-inline std::string CloseTag() { return std::string("} \n"); }
-inline std::string CloseTagNext() { return std::string("}, \n"); }
+// inline std::string CloseTag() { return std::string("} \n"); }
+// inline std::string CloseTagNext() { return std::string("}, \n"); }
 
-inline std::string DoubleData(std::size_t offset) {
-  std::stringstream s;
-  s << "dtype:float64, ";
-  s << "number_of_elements:1, ";
-  s << "offset:" << offset << ", ";
-  s << "stride:8, ";
-  s << "element_bytes:8";
-  s << "\n";
-  return s.str();
-}
+// inline std::string DoubleData(std::size_t offset) {
+//   std::stringstream s;
+//   s << "dtype:float64, ";
+//   s << "number_of_elements:1, ";
+//   s << "offset:" << offset << ", ";
+//   s << "stride:8, ";
+//   s << "element_bytes:8";
+//   s << "\n";
+//   return s.str();
+// }
 
-inline void RemoveNextIndicator(std::stringstream* s) {
-  s->clear();
-  s->seekp(static_cast<std::streamoff>(s->str().size()) - 3);
-  *s << " \n";
-}
+// inline void RemoveNextIndicator(std::stringstream* s) {
+//   s->clear();
+//   s->seekp(static_cast<std::streamoff>(s->str().size()) - 3);
+//   *s << " \n";
+// }
 
-}  // namespace conduit_schema
-}  // namespace testing
-}  // namespace nesci
+// }  // namespace conduit_schema
+// }  // namespace testing
+// }  // namespace nesci
 
 #endif  // TESTING_INCLUDE_NESCI_TESTING_CONDUIT_SCHEMA_HPP_
diff --git a/testing/include/nesci/testing/data.hpp b/testing/include/nesci/testing/data.hpp
index b5de4dee77fb3d6ac44b32a42a349766426fbdf3..3fb8081f16d66e3cdf36dae179d2b2f12ae2a21f 100644
--- a/testing/include/nesci/testing/data.hpp
+++ b/testing/include/nesci/testing/data.hpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -30,7 +30,6 @@
 #include <vector>
 
 #include "conduit/conduit_node.hpp"
-#include "nesci/layout/utility.hpp"
 #include "nesci/testing/conduit_schema.hpp"
 
 #if defined(__GNUC__) && !defined(__clang__)
@@ -42,144 +41,35 @@
 namespace nesci {
 namespace testing {
 
-class Data;
+NESCI_UNUSED const std::string ANY_MULTIMETER_NAME{"AwesomeMultimeter"};
+NESCI_UNUSED const std::vector<std::string> ANY_DOUBLE_ATTRIBUTES = {"V_m",
+                                                                     "g_e"};
+NESCI_UNUSED const std::vector<std::string> ANY_LONG_ATTRIBUTES = {"Att0",
+                                                                   "Att1"};
 
-NESCI_UNUSED static const char* ANY_DEVICE_NAME{"multimeter A"};
-NESCI_UNUSED static const char* NOT_A_DEVICE_NAME{"NOT_A_DEVICE_NAME"};
+NESCI_UNUSED const double ANY_TIME = 0.1;
+NESCI_UNUSED const double OTHER_TIME = 0.2;
 
-NESCI_UNUSED static const char* ANY_MULTIMETER_NAME{"multimeter A"};
-NESCI_UNUSED static const char* NOT_A_MULTIMETER_NAME{"NOT_A_MULTIMETER_NAME"};
+NESCI_UNUSED const uint64_t ANY_ID = 1;
+NESCI_UNUSED const uint64_t OTHER_ID = 13;
 
-NESCI_UNUSED static const char* ANY_SPIKE_DETECTOR_NAME{"spikes A"};
-NESCI_UNUSED static const char* NOT_A_SPIKE_DETECTOR_NAME{
-    "NOT_A_SPIKE_DETECTOR_NAME"};
+NESCI_UNUSED const std::vector<double> ANY_DOUBLE_VALUES = {-0.2, 0.5};
+NESCI_UNUSED const std::vector<double> OTHER_DOUBLE_VALUES = {123.0, -0.13};
+NESCI_UNUSED const std::vector<long> ANY_LONG_VALUES = {-2, 5};    // NOLINT
+NESCI_UNUSED const std::vector<long> OTHER_LONG_VALUES = {123897,  // NOLINT
+                                                          -238};
 
-#define NESCI_TESTING_TRIPLET(type, name, value0, value1, value2, invalid) \
-  NESCI_UNUSED static const type ANY_##name{value0};                       \
-  NESCI_UNUSED static const type ANOTHER_##name{value1};                   \
-  NESCI_UNUSED static const type THIRD_##name{value2};                     \
-  NESCI_UNUSED static const type NO_##name { invalid }
-#define NESCI_TESTING_TRIPLET_VECTOR(type, name, value0, value1, value2,    \
-                                     invalid)                               \
-  NESCI_UNUSED static const std::vector<type> ANY_##name##S{value0, value1, \
-                                                            value2};        \
-  NESCI_TESTING_TRIPLET(type, name, value0, value1, value2, invalid)
-#define NESCI_TESTING_TRIPLET_VECTOR_STRING(name, value0, value1, value2) \
-  NESCI_UNUSED static const std::vector<std::string> ANY_##name##S{       \
-      value0, value1, value2};                                            \
-  NESCI_TESTING_TRIPLET(char*, name, value0, value1, value2, "NO ##name")
-#define NESCI_TESTING_TRIPLET_VECTOR_STRINGIFIED(name)                         \
-  NESCI_UNUSED static const std::vector<std::string> ANY_##name##S_STRING{     \
-      nesci::layout::utility::to_string(ANY_##name),                           \
-      nesci::layout::utility::to_string(ANOTHER_##name),                       \
-      nesci::layout::utility::to_string(THIRD_##name)};                        \
-  NESCI_TESTING_TRIPLET(char*, name##_STRING, ANY_##name##S_STRING[0].c_str(), \
-                        ANY_##name##S_STRING[1].c_str(),                       \
-                        ANY_##name##S_STRING[2].c_str(), "NO ##name STRING")
-#define NESCI_TESTING_INDEX_TRIPLET(name) \
-  NESCI_TESTING_TRIPLET(std::size_t, name, 0ul, 1ul, 2ul, 3ul)
+conduit::Node CreateNestMultimeterDataNode();
 
-NESCI_TESTING_INDEX_TRIPLET(INDEX);
-NESCI_TESTING_INDEX_TRIPLET(TIME_INDEX);
-NESCI_TESTING_INDEX_TRIPLET(ATTRIBUTE_INDEX);
-NESCI_TESTING_INDEX_TRIPLET(ID_INDEX);
+NESCI_UNUSED const std::string ANY_SPIKE_DETECTOR_NAME = "AwesomeSpikeDetector";
+struct SpikeData {
+  double time;
+  uint64_t node_id;
+};
+NESCI_UNUSED const std::vector<SpikeData> ANY_SPIKE_DATA = {
+    {0.1, 10}, {0.2, 123}, {0.2, 12}, {0.3, 12}};
 
-NESCI_TESTING_TRIPLET_VECTOR(double, TIME, 0.1, 0.2, 0.3, std::nan("NO TIME"));
-NESCI_TESTING_TRIPLET_VECTOR_STRINGIFIED(TIME);
-NESCI_TESTING_TRIPLET_VECTOR_STRING(ATTRIBUTE, "V_m", "g_e", "g_i");
-NESCI_TESTING_TRIPLET_VECTOR(std::size_t, ID, 1ul, 2ul, 3ul,
-                             std::numeric_limits<std::size_t>::max());
-NESCI_TESTING_TRIPLET_VECTOR_STRINGIFIED(ID);
-
-inline std::string PathFor(const std::string& device_name,
-                           const std::string& timestep,
-                           const std::string& attribute,
-                           const std::string& neuron_id) {
-  return device_name + '/' + timestep + '/' + attribute + '/' + neuron_id;
-}
-
-// clang-format off
-NESCI_UNUSED static const std::vector<double> ANY_DATA_VALUES{
-  0.111, 0.112, 0.113,  0.121, 0.122, 0.123,  0.131, 0.132, 0.133,
-  0.211, 0.212, 0.213,  0.221, 0.222, 0.223,  0.231, 0.232, 0.233,
-  0.311, 0.312, 0.313,  0.321, 0.322, 0.323,  0.331, 0.332, 0.333};
-// clang-format on
-NESCI_UNUSED static const double ANY_DATA_VALUE{ANY_DATA_VALUES[0]};
-NESCI_UNUSED static const std::vector<double> ANY_DATA_VALUES_FOR_ATTRIBUTES{
-    ANY_DATA_VALUES[0], ANY_DATA_VALUES[3], ANY_DATA_VALUES[6]};
-
-NESCI_UNUSED static const std::size_t TIME_STRIDE{9};
-NESCI_UNUSED static const std::size_t ATTRIBUTE_STRIDE{3};
-NESCI_UNUSED static const std::size_t ID_STRIDE{1};
-
-inline double ValueAt(std::size_t time_id, std::size_t attribute_id,
-                      std::size_t neuron_id) {
-  const std::size_t index = time_id * TIME_STRIDE +
-                            attribute_id * ATTRIBUTE_STRIDE +
-                            neuron_id * ID_STRIDE;
-  return ANY_DATA_VALUES[index];
-}
-
-NESCI_TESTING_TRIPLET_VECTOR(std::size_t, TIME_OFFSET,
-                             ANY_INDEX* nesci::testing::TIME_STRIDE,
-                             ANOTHER_INDEX* nesci::testing::TIME_STRIDE,
-                             THIRD_INDEX* nesci::testing::TIME_STRIDE,
-                             std::numeric_limits<std::size_t>::max());
-NESCI_TESTING_TRIPLET_VECTOR(std::size_t, ATTRIBUTE_OFFSET,
-                             ANY_INDEX* nesci::testing::ATTRIBUTE_STRIDE,
-                             ANOTHER_INDEX* nesci::testing::ATTRIBUTE_STRIDE,
-                             THIRD_INDEX* nesci::testing::ATTRIBUTE_STRIDE,
-                             std::numeric_limits<std::size_t>::max());
-NESCI_TESTING_TRIPLET_VECTOR(std::size_t, ID_OFFSET,
-                             ANY_INDEX* nesci::testing::ID_STRIDE,
-                             ANOTHER_INDEX* nesci::testing::ID_STRIDE,
-                             THIRD_INDEX* nesci::testing::ID_STRIDE,
-                             std::numeric_limits<std::size_t>::max());
-
-inline static const std::string AnyNestDataSchema() {
-  std::stringstream s;
-  std::size_t offset = 0;
-  const std::size_t datum_size = 8;
-  s << "{\n";
-  s << "  " << conduit_schema::OpenTag(ANY_MULTIMETER_NAME);
-  for (auto time : ANY_TIMES) {
-    s << "    "
-      << conduit_schema::OpenTag(nesci::layout::utility::to_string(time));
-    for (auto attribute : ANY_ATTRIBUTES) {
-      s << "      " << conduit_schema::OpenTag(attribute);
-      for (auto id : ANY_IDS) {
-        s << "        "
-          << conduit_schema::OpenTag(nesci::layout::utility::to_string(id));
-        s << "          "
-          << conduit_schema::DoubleData((offset++) * datum_size);
-        s << "        " << conduit_schema::CloseTagNext();
-      }
-      conduit_schema::RemoveNextIndicator(&s);
-      s << "      " << conduit_schema::CloseTagNext();
-    }
-    conduit_schema::RemoveNextIndicator(&s);
-    s << "    " << conduit_schema::CloseTagNext();
-  }
-  conduit_schema::RemoveNextIndicator(&s);
-  s << "  " << conduit_schema::CloseTag();
-  s << "}";
-  return s.str();
-}
-
-inline static const conduit::Node AnyNestSpikeData() {
-  std::string path;
-  path += nesci::testing::ANY_SPIKE_DETECTOR_NAME;
-  path += "/";
-  path += nesci::testing::ANY_TIME_STRING;
-  conduit::Node node;
-  node[path] = nesci::testing::ANY_IDS;
-  return node;
-}
-
-NESCI_UNUSED static conduit::Node ANY_NEST_DATA{
-    AnyNestDataSchema(), const_cast<double*>(ANY_DATA_VALUES.data()), false};
-
-NESCI_UNUSED static conduit::Node ANY_SPIKE_DATA = AnyNestSpikeData();
+conduit::Node CreateSpikeDetectorDataNode();
 
 }  // namespace testing
 }  // namespace nesci
diff --git a/testing/src/data.cpp b/testing/src/data.cpp
index 098a2db7f4e5f22cd5fd84d2ceef7768034e7518..c54a64c84d609a2281677bbbdd54e3e806a32a09 100644
--- a/testing/src/data.cpp
+++ b/testing/src/data.cpp
@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-// nesci -- neural simulator conan interface
+// nesci -- neuronal simulator conan interface
 //
 // Copyright (c) 2018 RWTH Aachen University, Germany,
 // Virtual Reality & Immersive Visualization Group.
@@ -21,9 +21,102 @@
 
 #include "nesci/testing/data.hpp"
 
-#include <string>
-#include <vector>
+#include <sstream>
 
 namespace nesci {
-namespace testing {}  // namespace testing
+namespace testing {
+
+template <typename T>
+std::string AttributeEntry(const std::string& name, const std::string& type,
+                           const std::vector<T>& values) {
+  std::stringstream stream;
+  stream << name << ": "
+         << "{dtype: " << type << ", value: [";
+  for (size_t i = 0; i < values.size(); ++i) {
+    stream << values[i];
+    if (i != values.size() - 1) {
+      stream << ", ";
+    }
+  }
+  stream << "]}";
+  return stream.str();
+}
+
+conduit::Node CreateNestMultimeterDataNode() {
+  std::stringstream stream;
+  stream << "{"
+            "  info: {"
+            "    deviceType: {dtype:uint64, value: 2},"
+            "    deviceName: {dtype:char8_str, value: \""
+         << ANY_MULTIMETER_NAME
+         << "\"}"
+            "  },"
+            "  neuronIds: {"
+            "    dtype:uint64, value: ["
+         << ANY_ID << "," << OTHER_ID
+         << "]"
+            "  },"
+            "  attributes: {"
+         << AttributeEntry<double>(
+                ANY_DOUBLE_ATTRIBUTES[0], "float64",
+                {ANY_DOUBLE_VALUES[0], OTHER_DOUBLE_VALUES[0]})
+         << ", "
+         << AttributeEntry<double>(
+                ANY_DOUBLE_ATTRIBUTES[1], "float64",
+                {ANY_DOUBLE_VALUES[1], OTHER_DOUBLE_VALUES[1]})
+         << ", "
+         << AttributeEntry<long>(ANY_LONG_ATTRIBUTES[0], "int64",  // NOLINT
+                                 {ANY_LONG_VALUES[0], OTHER_LONG_VALUES[0]})
+         << ", "
+         << AttributeEntry<long>(ANY_LONG_ATTRIBUTES[1], "int64",  // NOLINT
+                                 {ANY_LONG_VALUES[1], OTHER_LONG_VALUES[1]})
+         << "  }"
+            "}";
+
+  std::cout << stream.str() << std::endl;
+
+  return {conduit::Generator{stream.str(), "conduit_json"}, false};
+}
+
+conduit::Node CreateSpikeDetectorDataNode() {
+  std::stringstream stream;
+  stream << "{"
+            "  info: {"
+            "    deviceType: {dtype:uint64, value: 1},"
+            "    deviceName: {dtype:char8_str, value: \""
+         << ANY_SPIKE_DETECTOR_NAME
+         << "\"}"
+            "  },"
+            "  neuronIds: {"
+            "    dtype:uint64, value: [";
+
+  for (size_t i = 0; i < ANY_SPIKE_DATA.size(); ++i) {
+    stream << ANY_SPIKE_DATA[i].node_id;
+    if (i != ANY_SPIKE_DATA.size() - 1) {
+      stream << ", ";
+    }
+  }
+
+  stream << "]"
+            "  },"
+            "  times: {"
+            "    dtype:float64, value: [";
+
+  for (size_t i = 0; i < ANY_SPIKE_DATA.size(); ++i) {
+    stream << ANY_SPIKE_DATA[i].time;
+    if (i != ANY_SPIKE_DATA.size() - 1) {
+      stream << ", ";
+    }
+  }
+
+  stream << "]"
+            "  }"
+            "}";
+
+  std::cout << stream.str() << std::endl;
+
+  return {conduit::Generator{stream.str(), "conduit_json"}, false};
+}
+
+}  // namespace testing
 }  // namespace nesci