# ── Unit tests ────────────────────────────────────────────────────────────────
# Pure, GPU-free, model-free tests. The similarity tests compile the GEMM backend
# directly with SAE_GEMM_CPU so the suite builds and runs on a machine without a
# GPU regardless of the main build's SAE_GEMM_BACKEND selection.

find_package(Catch2 3 QUIET)
if(NOT Catch2_FOUND)
    include(FetchContent)
    FetchContent_Declare(
        Catch2
        GIT_REPOSITORY https://github.com/catchorg/Catch2.git
        GIT_TAG        v3.5.3
    )
    FetchContent_MakeAvailable(Catch2)
endif()

add_executable(sae_tests
    test_similarity.cpp
    test_calibration.cpp
    test_gallery_store.cpp
    test_face_utils.cpp
    test_track_gallery.cpp
    test_face_tracker.cpp
    ${CMAKE_SOURCE_DIR}/src/backends/gemm_backend.cpp
    ${CMAKE_SOURCE_DIR}/src/gallery/gallery_store.cpp
    ${CMAKE_SOURCE_DIR}/src/gallery/embedder_stamp.cpp
)
target_include_directories(sae_tests PRIVATE ${CMAKE_SOURCE_DIR}/src)
# SAE_GEMM_CPU: build the CPU reference GEMM regardless of the main backend.
# SAE_MODELS_DIR: config.hpp (pulled in by track_gallery.hpp) bakes model paths.
target_compile_definitions(sae_tests PRIVATE
    SAE_GEMM_CPU
    SAE_MODELS_DIR="${SAE_MODELS_DIR}")
# gallery_store.cpp + gallery_calibration.hpp use nlohmann/json and HDF5
# (galleries are HDF5-native, see src/gallery/gallery_store.cpp); face_utils.hpp
# and the calibration GEMM pull in OpenCV (calib3d/imgproc/core) via types.hpp.
target_link_libraries(sae_tests PRIVATE
    Catch2::Catch2WithMain
    nlohmann_json::nlohmann_json
    ${OpenCV_LIBS}
    ${HDF5_CXX_LIBRARIES})
target_include_directories(sae_tests PRIVATE ${HDF5_INCLUDE_DIRS})

include(CTest)
include(Catch)
catch_discover_tests(sae_tests)