Unit tests are found in Linux but not in Windows

[kahlenberg]

I have following CMakeLists.txt in my project folder:

# CMakeList.txt : Top-level CMake project file, do global configuration
# and include sub-projects here.
#
cmake_minimum_required(VERSION 3.25)

project(CMakeTestProject VERSION 1.0 LANGUAGES CXX)

# Enable Hot Reload for MSVC compilers if supported.
if (POLICY CMP0141)
  cmake_policy(SET CMP0141 NEW)
  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<IF:$<AND:$<C_COMPILER_ID:MSVC>,$<CXX_COMPILER_ID:MSVC>>,$<$<CONFIG:Debug,RelWithDebInfo>:EditAndContinue>,$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>>")
endif()

#Set default compile flags
if(CMAKE_COMPILER_IS_GNUCXX)
    message(STATUS "GCC detected, adding compile flags")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
else()
    message(STATUS "CL detected, adding compile flags")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Wall")	
endif()

project ("CMakeTestProject")

find_package(nlohmann_json 3.2.0 REQUIRED)

set(SOURCES 
        src/main.cpp 
        src/EventHandler.cpp
        src/JSonHandler.cpp
)

set(HEADERS 
        ${CMAKE_CURRENT_SOURCE_DIR}/inc/IEventHandler.h
        ${CMAKE_CURRENT_SOURCE_DIR}/inc/EventHandler.h
        ${CMAKE_CURRENT_SOURCE_DIR}/inc/JSonHandler.h
        ${CMAKE_CURRENT_SOURCE_DIR}/inc/IJSonHandler.h
)

# Add source to this project's executable.
add_executable (${PROJECT_NAME} ${SOURCES} ${HEADERS})

set_target_properties(${PROJECT_NAME} 
                        PROPERTIES 
                            CXX_STANDARD 20
                            CXX_STANDARD_REQUIRED true
)

# Include sub-projects.
option(BUILD_TESTING "Build tests" ON)

include(CTest)
enable_testing()

add_subdirectory(tests)

target_include_directories(${PROJECT_NAME} 
                            PRIVATE 
                                ${CMAKE_CURRENT_SOURCE_DIR}/inc 
                                cxxopts\\include
)

target_link_libraries(${PROJECT_NAME} 
                            PRIVATE 
                                nlohmann_json::nlohmann_json
)

And CMakeLists.txt in ./tests directory:

# Enable Hot Reload for MSVC compilers if supported.
if (POLICY CMP0141)
  cmake_policy(SET CMP0141 NEW)
  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<IF:$<AND:$<C_COMPILER_ID:MSVC>,$<CXX_COMPILER_ID:MSVC>>,$<$<CONFIG:Debug,RelWithDebInfo>:EditAndContinue>,$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>>")
endif()

project(${PROJECT_NAME}_unit_test)

find_package(GTest CONFIG REQUIRED)

include(GoogleTest)

set(SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/src/test_EventHandler.cpp
			${CMAKE_CURRENT_SOURCE_DIR}/.. /src/EventHandler.cpp)

add_executable(${PROJECT_NAME} ${SOURCES})

set_target_properties(${PROJECT_NAME} 
                        PROPERTIES 
                            CXX_STANDARD 20
                            CXX_STANDARD_REQUIRED true
)

target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/.. /inc)
target_link_libraries(${PROJECT_NAME} 
					  PRIVATE
						  GTest::gtest_main 
						  GTest::gmock
)
gtest_discover_tests(${PROJECT_NAME})

I can build the project in Linux (Debian12, cmake v3.25, g++ 12.2) and run the test executable. It finds tests (right now only one test is available) and run it.
But in Windows it cannot find any tests in test executable. When I run it, I receive No tests found message.

[kahlenberg]

Ok I found the issue:

target_link_libraries(${PROJECT_NAME} 
					  PRIVATE
						  GTest::gtest_main 
						   GTest::gtest
						  GTest::gmock

I have to add GTest::gtest as well, it seems only GTest::gtest_main is not enough on Windows. But in Linux it works without linking to GTest::gtest