add coverage

.gitea/workflows/ci.yml

@@ -20,12 +20,19 @@ jobs:
           git fetch --depth 1 origin ${{ github.sha }}
           git checkout FETCH_HEAD
       - name: Configure
-        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
+        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug -DENABLE_COVERAGE=ON
 
       - name: Build
-        run: cmake --build build --config Release -j "$(nproc)"
+        run: cmake --build build --config Debug -j "$(nproc)"
         
       - name: Test
         run: |
           cd build
           ctest --output-on-failure
+
+      - name: Coverage
+        run: |
+          lcov --capture --directory build --output-file build/coverage.info
+          lcov --remove build/coverage.info "/usr/*" "*/build/*" "*/_deps/*" --output-file build/coverage.info
+          lcov --summary build/coverage.info
+          genhtml build/coverage.info --output-directory build/coverage-html