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cmake_minimum_required(VERSION 3.14)
project(openthread-gtest)

find_package(GTest CONFIG REQUIRED COMPONENTS GTest GMock Main)

# GoogleTest requires at least C++14
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

include(GoogleTest)

add_library(ot-fake-platform
    fake_platform.cpp
)
target_link_libraries(ot-fake-platform
    ot-config
)

# Match the multiple-static-instance configuration of a multi-PAN radio-only build.
if(OT_RCP AND OT_MULTIPAN_RCP AND NOT OT_FTD)
    target_compile_definitions(ot-fake-platform PRIVATE
        OPENTHREAD_CONFIG_MULTIPLE_INSTANCE_ENABLE=1
        OPENTHREAD_CONFIG_MULTIPLE_STATIC_INSTANCE_ENABLE=1
    )
endif()

if(OT_FTD)
    add_library(ot-fake-ftd INTERFACE)
    target_compile_definitions(ot-fake-ftd INTERFACE
        OPENTHREAD_FTD=1
        OPENTHREAD_MTD=0
        OPENTHREAD_RADIO=0
    )
    target_link_libraries(ot-fake-ftd INTERFACE
        openthread-ftd
        ot-fake-platform
    )

    add_executable(ot-ftd-gtest
        dataset_test.cpp
        udp_test.cpp
    )
    target_link_libraries(ot-ftd-gtest
        ot-fake-ftd
        GTest::gtest
        GTest::gmock
        GTest::gtest_main
    )
    gtest_discover_tests(ot-ftd-gtest)

    add_executable(ot-posix-gtest
        multicast_forwarding_test.cpp
        ${openthread_SOURCE_DIR}/src/posix/platform/multicast_forwarding.cpp
    )

    target_include_directories(ot-posix-gtest PRIVATE
        ${openthread_SOURCE_DIR}/src
        ${openthread_SOURCE_DIR}/src/core
        ${openthread_SOURCE_DIR}/src/posix/platform
    )

    target_link_libraries(ot-posix-gtest
        ot-fake-ftd
        GTest::gtest
        GTest::gtest_main
    )

    gtest_discover_tests(ot-posix-gtest)

    # The BPF tap exists only where BPF does. Its source is compiled under the Backbone Router multicast routing
    # configuration, which the test turns on for itself so that it runs whether or not the build enables the Backbone
    # Router; only an explicit OT_BACKBONE_ROUTER=OFF, where ot-config already defines the guard as 0, leaves it out.
    if(NOT CMAKE_SYSTEM_NAME STREQUAL "Linux" AND (OT_BACKBONE_ROUTER OR OT_BACKBONE_ROUTER STREQUAL ""))
        add_executable(ot-posix-bpf-gtest
            bpf_tap_test.cpp
            ${openthread_SOURCE_DIR}/src/posix/platform/bpf_tap.cpp
        )

        target_compile_definitions(ot-posix-bpf-gtest PRIVATE
            OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE=1
            OPENTHREAD_CONFIG_BACKBONE_ROUTER_MULTICAST_ROUTING_ENABLE=1
            OPENTHREAD_POSIX_CONFIG_BACKBONE_ROUTER_MULTICAST_ROUTING_ENABLE=1
        )

        target_include_directories(ot-posix-bpf-gtest PRIVATE
            ${openthread_SOURCE_DIR}/src
            ${openthread_SOURCE_DIR}/src/core
            ${openthread_SOURCE_DIR}/src/posix/platform
        )

        target_link_libraries(ot-posix-bpf-gtest
            ot-fake-ftd
            GTest::gtest
            GTest::gtest_main
        )

        gtest_discover_tests(ot-posix-bpf-gtest)
    endif()

endif()

if(OT_RCP)
    add_library(ot-fake-rcp
        fake_coprocessor_platform.cpp
    )
    target_link_libraries(ot-fake-rcp
        openthread-hdlc
        openthread-rcp
        openthread-radio-spinel
        openthread-radio
        ot-fake-platform
    )

    add_executable(ot-radio-spinel-rcp-gtest
        radio_spinel_rcp_test.cpp
    )
    target_link_libraries(ot-radio-spinel-rcp-gtest
        ot-fake-rcp
        GTest::gtest
        GTest::gmock
        GTest::gtest_main
    )

    gtest_discover_tests(ot-radio-spinel-rcp-gtest)
endif()
