Added support for coverage reporting.

.github/.codecov.yml

@@ -0,0 +1,31 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 100%
+        base: auto
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach,diff,flags,files,footer"
+  behavior: default
+  require_changes: no
+  require_head: no
+  require_base: no
+
+github_checks:
+  annotations: true

.github/workflows/ci.yml

@@ -35,10 +35,23 @@ jobs:
     - name: Checkout Code
       uses: actions/checkout@v2
 
-    - name: Install Linux Dependencies
+    - name: Detect Linux Clang Version
       if: runner.os == 'Linux'
-      run: sudo apt-get update && sudo apt-get install libxrandr-dev libxcursor-dev libudev-dev libopenal-dev libflac-dev libvorbis-dev libgl1-mesa-dev libegl1-mesa-dev
+      run: clang++ --version | sed -n 's/.*version \([0-9]\+\)\..*/clang_version=\1/p' >> $GITHUB_ENV
 
+    - name: Install Linux Tools and Dependencies
+      if: runner.os == 'Linux'
+      run: sudo apt-get update && sudo apt-get install gcovr llvm-${{ env.clang_version }} libxrandr-dev libxcursor-dev libudev-dev libopenal-dev libflac-dev libvorbis-dev libgl1-mesa-dev libegl1-mesa-dev
+
+    - name: Install macOS Tools and Dependencies
+      if: runner.os == 'macOS'
+      run: brew install gcovr
+
+    - name: Install OpenCppCoverage and add to PATH
+      if: runner.os == 'Windows'
+      run: |
+        choco install OpenCppCoverage -y
+        echo "C:\Program Files\OpenCppCoverage" >> $env:GITHUB_PATH
 
     - name: Install Android Components
       if: matrix.platform.name == 'Android'
@@ -48,11 +61,47 @@ jobs:
         wget -nv https://dl.google.com/android/repository/android-ndk-r18b-linux-x86_64.zip -P $GITHUB_WORKSPACE
         unzip -qq -d $GITHUB_WORKSPACE android-ndk-r18b-linux-x86_64.zip
 
-
     - name: Configure CMake
       shell: bash
-      run: cmake -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install -DSFML_BUILD_EXAMPLES=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DSFML_BUILD_TEST_SUITE=TRUE ${{matrix.platform.flags}} ${{matrix.config.flags}}
+      run: cmake -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install -DSFML_BUILD_EXAMPLES=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DSFML_BUILD_TEST_SUITE=TRUE -DSFML_ENABLE_COVERAGE=TRUE ${{matrix.platform.flags}} ${{matrix.config.flags}}
 
     - name: Build
       shell: bash
       run: cmake --build $GITHUB_WORKSPACE/build --config Release --target install
+
+    - name: Generate OpenCppCoverage Coverage Report
+      if: matrix.platform.name == 'Windows VS2019' || matrix.platform.name == 'Windows VS2022'
+      shell: bash
+      run: cmake --build $GITHUB_WORKSPACE/build --config Debug --target runtests
+
+    - name: Generate GCC Gcov Coverage Report
+      if: matrix.platform.name == 'Linux GCC'
+      shell: bash
+      run: |
+        cmake -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install -DCMAKE_BUILD_TYPE=Debug -DSFML_BUILD_EXAMPLES=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DSFML_BUILD_TEST_SUITE=TRUE -DSFML_ENABLE_COVERAGE=TRUE ${{matrix.platform.flags}} ${{matrix.config.flags}}
+        cmake --build $GITHUB_WORKSPACE/build --target runtests
+        gcovr -r $GITHUB_WORKSPACE -x $GITHUB_WORKSPACE/build/coverage.out -s -f 'src/SFML/.*' -f 'include/SFML/.*' $GITHUB_WORKSPACE
+
+    - name: Generate Clang Gcov Coverage Report
+      if: matrix.platform.name == 'Linux Clang'
+      shell: bash
+      run: |
+        cmake -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install -DCMAKE_BUILD_TYPE=Debug -DSFML_BUILD_EXAMPLES=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DSFML_BUILD_TEST_SUITE=TRUE -DSFML_ENABLE_COVERAGE=TRUE ${{matrix.platform.flags}} ${{matrix.config.flags}}
+        cmake --build $GITHUB_WORKSPACE/build --target runtests
+        gcovr --gcov-executable="llvm-cov-${{ env.clang_version }} gcov" -r $GITHUB_WORKSPACE -x $GITHUB_WORKSPACE/build/coverage.out -s -f 'src/SFML/.*' -f 'include/SFML/.*' $GITHUB_WORKSPACE
+
+    - name: Generate Apple Clang Gcov Coverage Report
+      if: matrix.platform.name == 'MacOS XCode' && (matrix.config.name == 'Shared' || matrix.config.name == 'Static')
+      shell: bash
+      run: |
+        cmake -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install -DCMAKE_BUILD_TYPE=Debug -DSFML_BUILD_EXAMPLES=TRUE -DCMAKE_VERBOSE_MAKEFILE=ON -DSFML_BUILD_TEST_SUITE=TRUE -DSFML_ENABLE_COVERAGE=TRUE ${{matrix.platform.flags}} ${{matrix.config.flags}}
+        cmake --build $GITHUB_WORKSPACE/build --target runtests
+        gcovr -r $GITHUB_WORKSPACE -x $GITHUB_WORKSPACE/build/coverage.out -s -f 'src/SFML/.*' -f 'include/SFML/.*' $GITHUB_WORKSPACE
+
+    - name: Upload Coverage Report to Codecov
+      if: matrix.platform.name == 'Windows VS2019' || matrix.platform.name == 'Windows VS2022' || matrix.platform.name == 'Linux GCC' || matrix.platform.name == 'Linux Clang' || (matrix.platform.name == 'MacOS XCode' && (matrix.config.name == 'Shared' || matrix.config.name == 'Static'))
+      uses: codecov/codecov-action@v2
+      with:
+        directory: ./build
+        files: ./build/coverage.out
+        fail_ci_if_error: true

CMakeLists.txt

@@ -82,6 +82,9 @@ endif()
 # add an option for building the test suite
 sfml_set_option(SFML_BUILD_TEST_SUITE FALSE BOOL "TRUE to build the SFML test suite, FALSE to ignore it")
 
+# add an option for enabling coverage reporting
+sfml_set_option(SFML_ENABLE_COVERAGE FALSE BOOL "TRUE to enable coverage reporting, FALSE to ignore it")
+
 # macOS specific options
 if(SFML_OS_MACOSX)
     # add an option to build frameworks instead of dylibs (release only)

cmake/Macros.cmake

@@ -73,6 +73,17 @@ macro(sfml_add_library module)
     # enable C++17 support
     target_compile_features(${target} PUBLIC cxx_std_17)
 
+    # Add required flags for GCC if coverage reporting is enabled
+    if (SFML_ENABLE_COVERAGE AND (SFML_COMPILER_GCC OR SFML_COMPILER_CLANG))
+        target_compile_options(${target} PUBLIC $<$<CONFIG:DEBUG>:-O0> $<$<CONFIG:DEBUG>:-g> $<$<CONFIG:DEBUG>:-fprofile-arcs> $<$<CONFIG:DEBUG>:-ftest-coverage>)
+
+        if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
+            target_link_options(${target} PUBLIC $<$<CONFIG:DEBUG>:--coverage>)
+        else()
+            target_link_libraries(${target} PUBLIC $<$<CONFIG:DEBUG>:--coverage>)
+        endif()
+    endif()
+
     set_file_warnings(${THIS_SOURCES})
 
     # define the export symbol of the module
@@ -318,6 +329,20 @@ function(sfml_add_test target SOURCES DEPENDS)
     # link the target to its SFML dependencies
     target_link_libraries(${target} PRIVATE ${DEPENDS})
 
+    # If coverage is enabled for MSVC and we are linking statically, use /WHOLEARCHIVE
+    # to make sure the linker doesn't discard unused code sections before coverage can be measured
+    if (SFML_ENABLE_COVERAGE AND SFML_COMPILER_MSVC AND NOT BUILD_SHARED_LIBS)
+        if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
+            foreach (DEPENDENCY ${DEPENDS})
+                target_link_options(${target} PRIVATE $<$<CONFIG:DEBUG>:/WHOLEARCHIVE:$<TARGET_LINKER_FILE:${DEPENDENCY}>>)
+            endforeach()
+        else()
+            foreach (DEPENDENCY ${DEPENDS})
+                target_link_libraries(${target} PRIVATE $<$<CONFIG:DEBUG>:/WHOLEARCHIVE:$<TARGET_LINKER_FILE:${DEPENDENCY}>>)
+            endforeach()
+        endif()
+    endif()
+
     # Add the test
     add_test(${target} ${target})
 

test/CMakeLists.txt

@@ -51,12 +51,75 @@ if(SFML_BUILD_NETWORK)
     target_link_libraries(test-sfml-network PRIVATE sfml-test-main)
 endif()
 
+if(SFML_BUILD_AUDIO)
+    SET(AUDIO_SRC
+        "${SRCROOT}/Audio/Dummy.cpp" # TODO: Remove when there are real tests
+    )
+    sfml_add_test(test-sfml-audio "${AUDIO_SRC}" SFML::Audio)
+    target_link_libraries(test-sfml-audio PRIVATE sfml-test-main)
+endif()
+
 # Automatically run the tests at the end of the build
 add_custom_target(runtests ALL
-                  DEPENDS test-sfml-system test-sfml-window test-sfml-graphics test-sfml-network
+                  DEPENDS test-sfml-system test-sfml-window test-sfml-graphics test-sfml-network test-sfml-audio
 )
 
+if(SFML_OS_WINDOWS AND NOT SFML_USE_SYSTEM_DEPS)
+    # Copy the binaries of SFML dependencies
+    list(APPEND BINARIES
+        "openal32.dll"
+    )
+
+    foreach (BINARY ${BINARIES})
+        if(ARCH_32BITS)
+            list(APPEND BINARY_PATHS "${PROJECT_SOURCE_DIR}/extlibs/bin/x86/${BINARY}")
+        elseif(ARCH_64BITS)
+            list(APPEND BINARY_PATHS "${PROJECT_SOURCE_DIR}/extlibs/bin/x64/${BINARY}")
+        endif()
+    endforeach()
+
+    add_custom_command(TARGET runtests
+                       COMMENT "Copy binaries"
+                       POST_BUILD COMMAND "${CMAKE_COMMAND}" -E copy ${BINARY_PATHS} "$<TARGET_FILE_DIR:test-sfml-system>"
+    )
+endif()
+
+if(SFML_ENABLE_COVERAGE AND SFML_COMPILER_MSVC)
+    # Try to find and use OpenCppCoverage for coverage reporting when building with MSVC
+    find_program(OpenCppCoverage_BINARY "OpenCppCoverage.exe")
+
+    if(OpenCppCoverage_BINARY)
+        execute_process(COMMAND "${OpenCppCoverage_BINARY}" --help ERROR_VARIABLE OpenCppCoverage_HELP_OUTPUT OUTPUT_QUIET)
+
+        if(OpenCppCoverage_HELP_OUTPUT MATCHES "OpenCppCoverage Version: ([.0-9]+)")
+            set(OpenCppCoverage_VERSION "${CMAKE_MATCH_1}")
+        endif()
+    endif()
+
+    include(FindPackageHandleStandardArgs)
+
+    find_package_handle_standard_args(OpenCppCoverage
+        REQUIRED_VARS OpenCppCoverage_BINARY
+        VERSION_VAR OpenCppCoverage_VERSION
+    )
+endif()
+
+if(SFML_ENABLE_COVERAGE AND OpenCppCoverage_FOUND)
+    # Use OpenCppCoverage
+    message(STATUS "Using OpenCppCoverage to generate coverage report")
+
+    string(REPLACE "/" "\\" COVERAGE_EXCLUDE "${CMAKE_CTEST_COMMAND}")
+    string(REPLACE "/" "\\" COVERAGE_SRC "${PROJECT_SOURCE_DIR}/src")
+    string(REPLACE "/" "\\" COVERAGE_INCLUDE "${PROJECT_SOURCE_DIR}/include")
+
+    add_custom_command(TARGET runtests
+                       COMMENT "Run tests"
+                       POST_BUILD COMMAND "${OpenCppCoverage_BINARY}" ARGS --quiet --export_type cobertura:"${CMAKE_BINARY_DIR}/coverage.out" --cover_children --excluded_modules "${COVERAGE_EXCLUDE}" --sources "${COVERAGE_SRC}" --sources "${COVERAGE_INCLUDE}" -- "${CMAKE_CTEST_COMMAND}" --output-on-failure -C $<CONFIG>
+    )
+else()
+    # Run tests without a coverage runner
     add_custom_command(TARGET runtests
                        COMMENT "Run tests"
                        POST_BUILD COMMAND "${CMAKE_CTEST_COMMAND}" --output-on-failure -C $<CONFIG>
     )
+endif()