Setup coverage

.github/workflows/ci.yml

@@ -30,13 +30,12 @@ jobs:
       - name: Build
         run: cmake --build build
 
-      - name: Test
-        working-directory: build
-        run: ctest -V
-
-      # - name: Test with Coverage
+      # - name: Test
       #   working-directory: build
-      #   run: cmake --build ${BUILD_DIR} --target os_test_coverage
+      #   run: ctest -V
+
+      - name: Test with Coverage
+        run: cmake --build build --target Wavefront_coverage
 
   lint:
     runs-on: ubuntu-latest

CMakeLists.txt

@@ -8,6 +8,10 @@ project(Wavefront
 option(WAVEFRONT_BUILD_DOCS "Builds the Wavefront documentation" ON)
 option(WAVEFRONT_BUILD_TESTS "Builds the Wavefront tests" ON)
 
+option(WAVEFRONT_TEST_COVERAGE "Generate gcov target for calculating code coverage" ON)
+option(WAVEFRONT_TEST_COVERAGE_CAN_FAIL "Tests can fail for coverage" ON)
+option(WAVEFRONT_TEST_COVERAGE_DARK "Use dark theme for html output" ON)
+
 # Only if this is the top level project (not included with add_subdirectory)
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
     # Use -std=c++xx instead of -std=g++xx
@@ -17,6 +21,19 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
     set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
     if(WAVEFRONT_BUILD_TESTS)
+        set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+        if(WAVEFRONT_TEST_COVERAGE AND CMAKE_COMPILER_IS_GNUCXX)
+            include(CodeCoverage)
+            append_coverage_compiler_flags()
+            if(WAVEFRONT_TEST_COVERAGE_CAN_FAIL)
+                set(GCOVR_ADDITIONAL_ARGS ${GCOVR_ADDITIONAL_ARGS} --html-high-threshold 100 --html-medium-threshold 90 --fail-under-line 100 --fail-under-branch 100)
+            endif()
+            if(WAVEFRONT_TEST_COVERAGE_DARK)
+                set(GCOVR_ADDITIONAL_ARGS ${GCOVR_ADDITIONAL_ARGS} --html-theme github.dark-green)
+            else()
+                set(GCOVR_ADDITIONAL_ARGS ${GCOVR_ADDITIONAL_ARGS} --html-theme github.green)
+            endif()
+        endif()
         # Testing only available for top level projects. It calls enable_testing
         # which must be in the main CMakeLists.
         include(CTest)
@@ -71,3 +88,14 @@ install(FILES
 if((CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME OR MODERN_CMAKE_BUILD_TESTING) AND WAVEFRONT_BUILD_TESTS)
     add_subdirectory(tests)
 endif()
+
+if(WAVEFRONT_TEST_COVERAGE AND CMAKE_COMPILER_IS_GNUCXX)
+    setup_target_for_coverage_gcovr_html(
+        NAME ${PROJECT_NAME}_coverage
+        EXECUTABLE ctest
+        EXECUTABLE_ARGS --output-on-failure
+        DEPENDENCIES ${PROJECT_NAME}
+        BASE_DIRECTORY .
+        EXCLUDE ${PROJECT_SOURCE_DIR}/tests ${PROJECT_BINARY_DIR}/*
+    )
+endif()

Makefile

@@ -24,4 +24,20 @@ test: build
 test-ci: build
 	cd build && GTEST_COLOR=1 ctest -V
 
-.PHONY: setup build install lint format test test-ci
+test-cov: test coverage
+
+coverage:
+	@mkdir -p build/coverage
+	gcovr --txt \
+		--html build/coverage/index.html \
+		--html-details \
+		--html-theme github.dark-green \
+		--html-high-threshold 100 \
+		--html-medium-threshold 90 \
+		--fail-under-line 100 \
+		--fail-under-branch 100 \
+		--lcov build/coverage.lcov \
+		-e build \
+		-e tests
+
+.PHONY: setup build install lint format test test-ci test-cov coverage