gtest.cmake

if(TESTING)
    include(GoogleTest) # Standart CMake modülü
    include(FetchContent)

    # 🚀 UPGRADE: Updated to v1.14.0.
    # The comment about WASI-SDK 12 is likely obsolete. Modern GTest handles
    # 'no-exception' environments much better via internal macros.
    FetchContent_Declare(
        GTest
        GIT_REPOSITORY https://github.com/google/googletest.git
        GIT_TAG v1.14.0
        SYSTEM # 🛡️ Automatically suppresses warnings from GTest headers
        FIND_PACKAGE_ARGS
    )

    # ⚡ CONFIGURATION: Set cache variables explicitly to control GTest behavior.
    set(BUILD_GMOCK OFF CACHE BOOL "Build with gMock disabled" FORCE)
    set(INSTALL_GTEST OFF CACHE BOOL "gTest installation disabled" FORCE)

    # 🕸️ WASM SPECIFIC CONFIGURATION
    if(WASM)
        # WASM environments often lack Pthread support or filesystem access.
        set(gtest_disable_pthreads ON CACHE BOOL "Disable pthreads for WASM" FORCE)
        
        # Instead of manually patching definitions later, we inject them here if possible,
        # or rely on GTest auto-detecting '-fno-exceptions' from the compiler flags.
        # However, forcing these is safe for Aztec's circuit environment:
        add_compile_definitions(
            GTEST_HAS_EXCEPTIONS=0 
            GTEST_HAS_STREAM_REDIRECTION=0
            GTEST_HAS_POSIX_RE=0 
            GTEST_HAS_CLONE=0
        )
    endif()

    # 🧠 SMART PATTERN: "Populate & Add"
    FetchContent_GetProperties(GTest)
    if(NOT GTest_POPULATED)
        FetchContent_Populate(GTest)
        
        # 🛡️ ISOLATION: Don't build GTest as part of 'all', only when tests are requested.
        add_subdirectory(${gtest_SOURCE_DIR} ${gtest_BINARY_DIR} EXCLUDE_FROM_ALL)
    endif()

    # 🔗 ALIASING: Modern GTest exports GTest::gtest, but for compatibility
    # with older find_package calls or custom scripts, we keep these if needed.
    if(NOT TARGET GTest::gtest)
        add_library(GTest::gtest ALIAS gtest)
        add_library(GTest::gtest_main ALIAS gtest_main)
    endif()

    # CMake'in standart test mekanizmasını aç
    enable_testing()
    
    # GTest'in kendi test keşif (discovery) modülünü dahil et
    include(GoogleTest)
endif()