tests.yml

name: Unit Tests

on:
  pull_request:
    branches: [ main ]
  push:
    branches: [ main ]

permissions:
  contents: read

jobs:
  test:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4

    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.11'

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r test/requirements.txt

    - name: Run unit tests with coverage
      run: |
        pytest test/unit/ -v --tb=short \
          --cov --cov-report=term-missing --cov-report=xml

    - name: Coverage summary
      if: always()
      run: |
        python - <<'PY'
        import xml.etree.ElementTree as ET, os
        try:
            rate = float(ET.parse("coverage.xml").getroot().get("line-rate", 0)) * 100
        except Exception:
            rate = 0.0
        summary = os.environ.get("GITHUB_STEP_SUMMARY")
        line = f"## Unit test coverage: {rate:.1f}% of lines\n"
        if summary:
            open(summary, "a").write(line)
        print(line)
        PY

    - name: Upload coverage report
      if: always()
      uses: actions/upload-artifact@v4
      with:
        name: coverage-report
        path: coverage.xml
        retention-days: 7