Add comprehensive unit tests with Google Test, PETSc/MPI tests, functional BBPGD solver tests, and CI/CD pipeline with matrix testing #15
Workflow file for this run
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| name: C++ Unit Tests with Coverage | |
| on: | |
| push: | |
| branches: [ main, develop, copilot/** ] | |
| pull_request: | |
| branches: [ main, develop ] | |
| workflow_dispatch: | |
| jobs: | |
| test: | |
| runs-on: ubuntu-latest | |
| strategy: | |
| matrix: | |
| mpi_ranks: [1, 4, 8] | |
| steps: | |
| - name: Checkout code | |
| uses: actions/checkout@v4 | |
| - name: Install dependencies | |
| run: | | |
| sudo apt-get update | |
| sudo apt-get install -y \ | |
| cmake \ | |
| g++ \ | |
| libopenmpi-dev \ | |
| openmpi-bin \ | |
| petsc-dev \ | |
| lcov | |
| - name: Configure CMake | |
| working-directory: ${{github.workspace}}/code/cpp | |
| run: | | |
| mkdir -p build | |
| cd build | |
| cmake -DENABLE_COVERAGE=ON .. | |
| - name: Build main application | |
| working-directory: ${{github.workspace}}/code/cpp/build | |
| run: | | |
| echo "Building main application..." | |
| make -j$(nproc) cellcollectives || exit 1 | |
| echo "✅ Main application built successfully" | |
| - name: Build tests | |
| working-directory: ${{github.workspace}}/code/cpp/build | |
| run: make -j$(nproc) unit_tests | |
| - name: Run unit tests (MPI ranks=${{ matrix.mpi_ranks }}) | |
| working-directory: ${{github.workspace}}/code/cpp/build | |
| run: | | |
| if [ "${{ matrix.mpi_ranks }}" -eq 1 ]; then | |
| echo "Running tests in single-process mode..." | |
| ./tests/unit_tests | |
| else | |
| echo "Running tests with MPI (${{ matrix.mpi_ranks }} ranks)..." | |
| mpirun --allow-run-as-root --oversubscribe -np ${{ matrix.mpi_ranks }} ./tests/unit_tests | |
| fi | |
| echo "✅ Tests completed with ${{ matrix.mpi_ranks }} rank(s)" | |
| - name: Generate coverage report | |
| if: matrix.mpi_ranks == 1 | |
| working-directory: ${{github.workspace}}/code/cpp/build | |
| run: | | |
| # Capture coverage data | |
| lcov --capture --directory . --output-file coverage.info --ignore-errors mismatch | |
| # Filter out system files and test files | |
| lcov --remove coverage.info '/usr/*' '*/build/_deps/*' '*/tests/*' \ | |
| --output-file coverage_filtered.info --ignore-errors unused | |
| # Generate HTML report | |
| genhtml coverage_filtered.info --output-directory coverage_report | |
| # Print summary | |
| echo "## Code Coverage Summary" >> $GITHUB_STEP_SUMMARY | |
| lcov --summary coverage_filtered.info 2>&1 | tee -a $GITHUB_STEP_SUMMARY | |
| - name: Upload coverage report | |
| if: matrix.mpi_ranks == 1 | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: coverage-report | |
| path: ${{github.workspace}}/code/cpp/build/coverage_report/ | |
| retention-days: 30 | |
| - name: Comment coverage on PR | |
| if: github.event_name == 'pull_request' && matrix.mpi_ranks == 1 | |
| uses: actions/github-script@v7 | |
| with: | |
| script: | | |
| const fs = require('fs'); | |
| const coverage = fs.readFileSync('${{github.workspace}}/code/cpp/build/coverage_filtered.info', 'utf8'); | |
| // Parse coverage data | |
| const lines = coverage.match(/LF:(\d+)/g); | |
| const linesHit = coverage.match(/LH:(\d+)/g); | |
| if (lines && linesHit) { | |
| const totalLines = lines.reduce((sum, l) => sum + parseInt(l.split(':')[1]), 0); | |
| const hitLines = linesHit.reduce((sum, l) => sum + parseInt(l.split(':')[1]), 0); | |
| const percentage = totalLines > 0 ? ((hitLines / totalLines) * 100).toFixed(2) : 0; | |
| const comment = `## Test Results ✅\n\n` + | |
| `All tests passed! 🎉\n\n` + | |
| `**Coverage:** ${percentage}% (${hitLines}/${totalLines} lines)\n\n` + | |
| `**MPI Testing:** Tests validated with 1, 4, and 8 ranks\n\n` + | |
| `[View detailed coverage report](https://github.com/${{github.repository}}/actions/runs/${{github.run_id}})`; | |
| github.rest.issues.createComment({ | |
| issue_number: context.issue.number, | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| body: comment | |
| }); | |
| } |