feat: switch to gtest

CMakeLists.txt

@@ -14,15 +14,15 @@ add_executable(Uebung0 src/main.c
         src/controller.c
         src/controller.h)
 
-# Fetch Catch2
+# Fetch GoogleTest
 Include(FetchContent)
 FetchContent_Declare(
-        Catch2
-        GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-        GIT_TAG        v3.3.2
+        googletest
+        GIT_REPOSITORY https://github.com/google/googletest.git
+        GIT_TAG        v1.15.2
 )
-FetchContent_MakeAvailable(Catch2)
-
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
 # Build Tests
 enable_testing()
 
@@ -32,7 +32,7 @@ add_executable(test_controller
         src/controller.test.cpp
 )
 
-target_link_libraries(test_controller PRIVATE Catch2::Catch2WithMain)
+target_link_libraries(test_controller PRIVATE GTest::gtest_main)
 target_include_directories(test_controller PRIVATE src/)
-add_test(test_controller ./test_controller)
-set_property(TEST test_controller PROPERTY ENVIRONMENT "CTEST_OUTPUT_ON_FAILURE=1")
+include(GoogleTest)
+gtest_discover_tests(test_controller)
\ No newline at end of file

src/controller.test.cpp

-#include <catch2/catch_test_macros.hpp>
+#include <gtest/gtest.h>
 extern "C" {
 #include "controller.h"
 }
-
-TEST_CASE("PI_Regler") {
-    REQUIRE(controller(8, 0, 500) == 16);
-    REQUIRE(controller(-2, 0, 500) == -4);
-    REQUIRE(controller(0, 2, 500) == -4);
+TEST(ControllerTest, gain) {
+    EXPECT_EQ(controller(8, 0, 500), 16);
+    EXPECT_EQ(controller(-2, 0, 500), -4);
+    EXPECT_EQ(controller(0, 2, 500), -4);
 }
 
-TEST_CASE("limits") {
-    REQUIRE(controller(2, 0, 2) == 2);
-    REQUIRE(controller(-2, 0, 2) == -2);
+TEST(ControllerTest, saturation) {
+    EXPECT_EQ(controller(2, 0, 2), 2);
+    EXPECT_EQ(controller(-2, 0, 2), -2);
 }
\ No newline at end of file