[ci] Add coverage job.

Author: bilke

.github/workflows/cmake-single-platform.yml

@@ -26,3 +26,20 @@ jobs:
     #  working-directory: ${{github.workspace}}/build
     #  run: ctest -C ${{env.BUILD_TYPE}}
 
+  coverage:
+    runs-on: ubuntu-latest
+    env:
+      BUILD_TYPE: Debug
+    steps:
+    - uses: actions/checkout@v4
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      run: ./vtkdiff --help
+    - name: Coverage
+      working-directory: ${{github.workspace}}/build
+      run: pipx run gcovr -r ${{github.workspace}}
+