test.yml

name: Tests

on:
  workflow_call:

jobs:
  setup:
    runs-on: ubuntu-latest
    outputs:
      python-versions: ${{ steps.versions.outputs.versions }}
    steps:
      - uses: actions/checkout@v6

      - name: Read Python versions from classifiers
        id: versions
        run: |
          versions=$(python3 -c "
          import tomllib, json, re
          with open('pyproject.toml', 'rb') as f:
              data = tomllib.load(f)
          classifiers = data.get('project', {}).get('classifiers', [])
          versions = [
              m.group(1) for c in classifiers
              if (m := re.fullmatch(r'Programming Language :: Python :: (\d+\.\d+)', c))
          ]
          print(json.dumps(versions))
          ")
          if [ "$versions" = "[]" ]; then
            echo "No Python versions declared in pyproject.toml classifiers" >&2
            exit 1
          fi
          echo "versions=$versions" >> "$GITHUB_OUTPUT"

  test:
    needs: setup
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ${{ fromJson(needs.setup.outputs.python-versions) }}

    steps:
      - uses: actions/checkout@v6

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install dependencies
        run: uv sync

      - name: Run tests
        run: uv run pytest tests