feat: enable line coverage

.github/workflows/ci.yml

@@ -17,18 +17,17 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y cmake clang-format clang-tidy-20 libsdl2-dev protobuf-compiler
+        sudo apt-get install -y cmake clang-format clang-tidy-20 libsdl2-dev protobuf-compiler gcovr
 
     - name: Check Code Formatting
       run: |
         find src include tests -type f \( -name "*.cpp" -o -name "*.hpp" -o -name "*.c" -o -name "*.h" \) | xargs clang-format --dry-run -Werror
 
     - name: Configure CMake
-      run: cmake -B build -DCMAKE_BUILD_TYPE=Release
+      run: cmake -B build -DCMAKE_BUILD_TYPE=Release -DNEURON_IDE_ENABLE_COVERAGE=ON
 
     - name: Build
       run: cmake --build build --config Release
 
-    - name: Run Tests
-      working-directory: build
-      run: ctest --output-on-failure -C Release
+    - name: Run Tests & Check Coverage
+      run: cmake --build build --target coverage

CMakeLists.txt

@@ -11,6 +11,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 include(Dependencies)
 include(CompilerWarnings)
 include(StaticAnalysis)
+include(Coverage)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
 

cmake/Coverage.cmake

@@ -0,0 +1,40 @@
+# cmake/Coverage.cmake
+
+option(NEURON_IDE_ENABLE_COVERAGE "Enable code coverage reporting" OFF)
+
+if(NEURON_IDE_ENABLE_COVERAGE)
+    find_program(GCOVR_PATH gcovr)
+
+    if(NOT GCOVR_PATH)
+        message(FATAL_ERROR "gcovr not found! Aborting configuration...")
+    endif()
+
+    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+        message(STATUS "Adding coverage compiler flags")
+        add_compile_options(--coverage)
+        add_link_options(--coverage)
+    else()
+        message(FATAL_ERROR "Code coverage is only supported with GCC or Clang")
+    endif()
+
+    set(COVERAGE_DIR "${CMAKE_BINARY_DIR}/coverage")
+
+    add_custom_target(coverage
+        COMMAND ${CMAKE_COMMAND} -E make_directory ${COVERAGE_DIR}
+        COMMAND ctest --output-on-failure
+        COMMAND ${GCOVR_PATH}
+            --root ${CMAKE_SOURCE_DIR}
+            --exclude ".*_deps.*"
+            --exclude ".*tests.*"
+            --exclude ".*test.*"
+            --exclude ".*protoFiles.*"
+            --exclude ".*pb.*"
+            --exclude ".*\\.hpp"
+            --fail-under-line 60
+            --print-summary
+            --html-details ${COVERAGE_DIR}/index.html
+            --xml ${COVERAGE_DIR}/coverage.xml
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        COMMENT "Running tests and generating code coverage report..."
+    )
+endif()