Add: Coverage CMake targets and Codecov upload

This adds new targets for measuring unit test coverage that can be
enabled with the CMake option ENABLE_COVERAGE.
The GitHub Actions workflow now also generates the coverage report
and uploads it to Codecov.

.github/workflows/build-and-test.yml

@@ -56,3 +56,9 @@ jobs:
           cmake --build build
       - name: Configure and run tests
         run: CTEST_OUTPUT_ON_FAILURE=1 cmake --build build -- tests test
+      - name: Upload test coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          file: build/coverage/coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
+          flags: unittests

.github/workflows/build-docs.yml

@@ -12,6 +12,8 @@ jobs:
     steps:
       - name: Run the c lang coverage action
         uses: greenbone/actions/doc-coverage-clang@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   build-gmp-doc:
     name: Build GMP documentation

CMakeLists.txt

@@ -259,6 +259,16 @@ configure_file (tools/greenbone-scapdata-sync.in tools/greenbone-scapdata-sync @
 configure_file (tools/greenbone-certdata-sync.in tools/greenbone-certdata-sync @ONLY)
 configure_file (tools/gvm-manage-certs.in tools/gvm-manage-certs @ONLY)
 
+## Code coverage
+
+OPTION (ENABLE_COVERAGE "Enable support for coverage analysis" OFF)
+if (ENABLE_COVERAGE)
+  set (COVERAGE_FLAGS "--coverage -ftest-coverage -fprofile-arcs")
+  set (COVERAGE_DIR "${CMAKE_BINARY_DIR}/coverage")
+  file (MAKE_DIRECTORY ${COVERAGE_DIR})
+  message ("-- Code Coverage enabled")
+endif (ENABLE_COVERAGE)
+
 ## Testing
 
 enable_testing ()
@@ -280,7 +290,7 @@ set (HARDENING_FLAGS            "-Wformat -Wformat-security -D_FORTIFY_SOURCE=2
 set (LINKER_HARDENING_FLAGS     "-Wl,-z,relro -Wl,-z,now")
 
 # To find unused functions, add: -flto -fwhole-program -ffunction-sections -Wl,--gc-sections -Wl,--print-gc-sections
-set (CMAKE_C_FLAGS              "${CMAKE_C_FLAGS} -Wall -D_BSD_SOURCE -D_ISOC99_SOURCE -D_SVID_SOURCE -D_DEFAULT_SOURCE -D_FILE_OFFSET_BITS=64 -DOPENVASD=${OPENVASD}")
+set (CMAKE_C_FLAGS              "${CMAKE_C_FLAGS} -Wall -D_BSD_SOURCE -D_ISOC99_SOURCE -D_SVID_SOURCE -D_DEFAULT_SOURCE -D_FILE_OFFSET_BITS=64 -DOPENVASD=${OPENVASD} ${COVERAGE_FLAGS}")
 
 set (CMAKE_C_FLAGS_DEBUG        "${CMAKE_C_FLAGS_DEBUG} -Werror -Wshadow ${COVERAGE_FLAGS} ${DEBUG_FUNCTION_NAMES_FLAGS}")
 set (CMAKE_C_FLAGS_RELEASE      "${CMAKE_C_FLAGS_RELEASE} ${HARDENING_FLAGS} ${COVERAGE_FLAGS}")

src/CMakeLists.txt

@@ -262,6 +262,21 @@ add_custom_target (tests
                    DEPENDS
                    gmp-tickets-test manage-test manage-sql-test manage-utils-test utils-test)
 
+if (ENABLE_COVERAGE)
+  add_custom_target (coverage-html
+                     COMMAND gcovr --html-details ${COVERAGE_DIR}/coverage.html
+                     -r ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR})
+  add_custom_target (coverage-xml
+                     COMMAND gcovr --xml ${COVERAGE_DIR}/coverage.xml
+                     -r ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR})
+  add_custom_target (coverage DEPENDS coverage-xml coverage-html)
+endif (ENABLE_COVERAGE)
+
+add_custom_target (clean-coverage
+                   COMMAND find . -name *.gcda -delete -or -name *.gcno -delete
+                   COMMAND rm -f ${COVERAGE_DIR}/*)
+
+
 add_executable (gvmd
                 main.c gvmd.c
                 debug_utils.c