Make gtest source dependency conditional on building testing (#557)

Properly check if Auth unit tests are supposed to be build

Fix linkage of gtest

Signed-off-by: Kai-Uwe Hermann <kai-uwe.hermann@pionix.de>

CMakeLists.txt

@@ -42,6 +42,9 @@ option(ISO15118_2_GENERATE_AND_INSTALL_CERTIFICATES "Automatically generate and
 option(EVEREST_ENABLE_RUN_SCRIPT_GENERATION "Enables the generation of run scripts (convenience scripts for starting available configurations)" ON)
 option(${PROJECT_NAME}_BUILD_TESTING "Build unit tests, used if included as dependency" OFF)
 option(BUILD_TESTING "Build unit tests, used if standalone project" OFF)
+if((${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME} OR ${PROJECT_NAME}_BUILD_TESTING) AND BUILD_TESTING)
+    set(EVEREST_CORE_BUILD_TESTING ON)
+endif()
 # This is a flag for building development tests, but not necessarily to run them, for expample in case
 # tests requires hardware.
 option(BUILD_DEV_TESTS "Build dev tests" OFF)
@@ -121,7 +124,7 @@ if(DOXYGEN_FOUND)
 endif()
 
 # testing
-if((${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME} OR ${PROJECT_NAME}_BUILD_TESTING) AND BUILD_TESTING)
+if(EVEREST_CORE_BUILD_TESTING)
     include(CTest)
     enable_testing()
     set(CMAKE_BUILD_TYPE Debug CACHE STRING "Build type" FORCE)

dependencies.yaml

@@ -74,10 +74,16 @@ ext-mbedtls:
 everest-utils:
   git: https://github.com/EVerest/everest-utils.git
   git_tag: v0.2.0
-  cmake_condition: "BUILD_TESTING"
+  cmake_condition: "EVEREST_CORE_BUILD_TESTING"
 # evse-security, since this is a direct dependency of libocpp it will get overwritten by the version set there
 # setting it here can be misleading since it does not affect the version being used
 libevse-security:
   git: https://github.com/EVerest/libevse-security.git
   git_tag: 69410a8
   cmake_condition: "EVEREST_DEPENDENCY_ENABLED_LIBEVSE_SECURITY"
+# unit testing
+gtest:
+  # GoogleTest now follows the Abseil Live at Head philosophy. We recommend updating to the latest commit in the main branch as often as possible.
+  git: https://github.com/google/googletest.git
+  git_tag: release-1.12.1
+  cmake_condition: "EVEREST_CORE_BUILD_TESTING"

modules/Auth/CMakeLists.txt

@@ -32,7 +32,7 @@ target_sources(${MODULE_NAME}
 
 # ev@c55432ab-152c-45a9-9d2e-7281d50c69c3:v1
 # insert other things like install cmds etc here
-if(BUILD_TESTING)
+if(EVEREST_CORE_BUILD_TESTING)
     add_subdirectory(tests)
 endif()
 # ev@c55432ab-152c-45a9-9d2e-7281d50c69c3:v1

modules/Auth/tests/CMakeLists.txt

@@ -8,17 +8,13 @@ set(INCLUDE_DIR
 get_target_property(GENERATED_INCLUDE_DIR generate_cpp_files EVEREST_GENERATED_INCLUDE_DIR)
 
 target_include_directories(auth_tests PUBLIC 
-    ${GTEST_INCLUDE_DIRS}
     ${INCLUDE_DIR}
     ${GENERATED_INCLUDE_DIR}
 )
 
-find_package(GTest REQUIRED)
-
 target_link_libraries(auth_tests PRIVATE
-    ${GTEST_LIBRARIES} 
-    ${GTEST_MAIN_LIBRARIES} 
     GTest::gmock
+    GTest::gtest_main
     everest::timer
     ${CMAKE_DL_LIBS}
     everest::log