C/Cpp: Add CMake example

cpp/test/CMakeLists.txt

@@ -0,0 +1,62 @@
+include(GoogleTest)
+
+## CONFIGURE TESTING LIBRARY
+
+# download and add googletest testing library
+set(INSTALL_GTEST OFF CACHE BOOL "Install GTest")
+FetchContent_Declare(
+  googletest
+  GIT_REPOSITORY https://github.com/google/googletest.git
+  GIT_TAG        release-1.10.0
+)
+FetchContent_GetProperties(googletest)
+if(NOT googletest_POPULATED)
+  FetchContent_Populate(googletest)
+  add_subdirectory(${googletest_SOURCE_DIR} ${googletest_BINARY_DIR})
+endif()
+
+# convinience macro. Attention, the target must already exist
+macro(add_gtest TESTNAME)
+    target_link_libraries(${TESTNAME} PUBLIC gtest gmock gtest_main)
+    
+    if(GOOGLE_TEST_INDIVIDUAL)
+        if(CMAKE_VERSION VERSION_LESS 3.10)
+            gtest_add_tests(TARGET ${TESTNAME}
+                            TEST_PREFIX "${TESTNAME}."
+                            TEST_LIST TmpTestList)
+            set_tests_properties(${TmpTestList} PROPERTIES FOLDER "Tests") # for IDEs
+        else()
+        gtest_discover_tests(${TESTNAME}
+                TEST_PREFIX "${TESTNAME}."
+                PROPERTIES FOLDER "Tests")
+        endif()
+    else()
+        add_test(${TESTNAME} ${TESTNAME})
+        set_target_properties(${TESTNAME} PROPERTIES FOLDER "Tests") # for IDEs
+    endif()
+endmacro()
+
+# add a make target with better test output, than the standard `make test`
+if(CMAKE_CONFIGURATION_TYPES)
+    add_custom_target(check COMMAND env GTEST_COLOR=1 ${CMAKE_CTEST_COMMAND} 
+        --force-new-ctest-process --output-on-failure
+        --build-config "$<CONFIGURATION>")
+else()
+    add_custom_target(check COMMAND env GTEST_COLOR=1 ${CMAKE_CTEST_COMMAND} 
+        --force-new-ctest-process --output-on-failure)
+endif()
+set_target_properties(check PROPERTIES FOLDER "Scripts")
+
+
+## CONFIGURE TESTS
+
+# # add tests for convinience interfaces
+# add_executable(interfacetests
+#     main.cpp
+#     template-test.cpp
+# )
+# add_gtest(interfacetests)
+
+# target_include_directories(interfacetests INTERFACE ${gtest_SOURCE_DIR}/include)
+# target_link_libraries(interfacetests PRIVATE main_util_v2x)
+# target_link_libraries(interfacetests PRIVATE main_util_hmi)

cpp/test/main.cpp

@@ -0,0 +1,16 @@
+/**
+ * @file      test/main.cpp
+ * @brief     Main function for all unit tests.
+ *
+ * @author    Name <email@example.com>
+ * @copyright (c) Company Name/ Author, YEAR
+ * @copyright Licensed under the Apache License, Version 2.0 <http://www.apache.org/licenses/LICENSE-2.0>
+ * @copyright Licensed under the GNU GPLv3 License <http://www.gnu.org/licenses/gpl-3.0.txt>
+ */
+
+#include "gtest/gtest.h"
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}