test.yml

name: Tests

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

jobs:
  test:
    runs-on: ${{ matrix.os }}
    # The suite runs in about a minute; anything approaching this is a hang,
    # and without a bound a hung job occupies a runner for six hours.
    timeout-minutes: 25
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python-version: ["3.10", "3.12"]

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install package
        run: pip install -e ".[dev]"

      - name: Run Python tests
        # faulthandler_timeout is stdlib-backed and adds no dependency: if any
        # single test runs longer than three minutes it dumps that test's stack
        # to the log, so a hang names itself instead of stalling silently.
        run: pytest tests/ -v --tb=short -o faulthandler_timeout=180

      - name: Run C unit tests (Linux/macOS only)
        if: runner.os != 'Windows'
        run: make test

      - name: Smoke test CLI
        run: |
          echo "CASSLGIRRT" | python -m LZGraphs.cli decompose
          python -m LZGraphs.cli --version

      - name: Packaging smoke test (Linux, Python 3.12)
        if: runner.os == 'Linux' && matrix.python-version == '3.12'
        run: |
          python -m pip install build
          python -m build
          python -m venv /tmp/lzg-sdist-venv
          /tmp/lzg-sdist-venv/bin/pip install dist/*.tar.gz
          /tmp/lzg-sdist-venv/bin/python -c "from LZGraphs import LZGraph; print('LZGraphs sdist OK')"
          python -m venv /tmp/lzg-wheel-venv
          /tmp/lzg-wheel-venv/bin/pip install dist/*.whl
          /tmp/lzg-wheel-venv/bin/python -c "from LZGraphs import LZGraph; print('LZGraphs wheel OK')"