function(addSubDirs_ofRoot anchorPath)
    message("scanning: ${anchorPath}")
    file(GLOB targetModules RELATIVE "${anchorPath}" "${anchorPath}/*")
    foreach(module ${targetModules})
        message("checking: ${module}")
        get_filename_component(moduleName ${module} NAME)
        set(modulePath "${anchorPath}/${moduleName}")
        if (NOT IS_DIRECTORY "${modulePath}")
            # skip files
            continue()
        endif()
        if (${moduleName} MATCHES "^_.*")
            # skip ignored component
            continue()
        endif()
        
        if(EXISTS "${modulePath}/${DEF_UTESTDIR}")
            message("Found unit-test: ${moduleName}")
            add_subdirectory("${modulePath}/${DEF_UTESTDIR}" ${moduleName})
        endif()
    endforeach()
endfunction()

macro(unitTestsFrame)
    if (CMAKE_TESTING_ENABLED)
        # get_filename_component(moduleName "${CMAKE_CURRENT_LIST_DIR}/.." NAME)
        file(GLOB_RECURSE targetSources "../${DEF_SRCDIR}/*.cpp" "../${DEF_SRCDIR}/*.c")
        add_library(${moduleName} ${targetSources})
        target_include_directories(${moduleName} PUBLIC "../${DEF_INCLUDEDIR}")
        
        set(moduleTestName "${moduleName}Test")
        file(GLOB_RECURSE testSource "*.cpp")
        add_executable(${moduleTestName} ${testSource})
        target_link_libraries(${moduleTestName} PRIVATE ${moduleName} doctest::doctest)
        target_include_directories(${moduleTestName} PRIVATE "../${DEF_SRCDIR}")

        add_test (TEST-${moduleName} ${moduleTestName})

        # gtest_discover_tests(${moduleTestName}
        #     PROPERTIES TIMEOUT 30 LABELS ${moduleName} LABELS "all"
        # )
    endif()
endmacro()