name: Test

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

permissions:
  contents: read

env:
  # turns off tox's output redirection so we can debug package installation
  TOX_OPTIONS: -vv

jobs:
  lint:
    runs-on: ubuntu-latest
    # https://github.community/t/github-actions-does-not-respect-skip-ci/17325/8
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    steps:
    - uses: actions/checkout@v4
    - name: Set up Python 3.x
      uses: actions/setup-python@v5
      with:
        python-version: "3.x"
    - name: Install packages
      run: pip install tox
    - name: Run Tox
      run: tox $TOX_OPTIONS -e lint,package_readme

  test:
    runs-on: ${{ matrix.platform }}
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.8", "3.11", "3.12"]
        platform: [ubuntu-latest]
        include: # Only test on the latest supported stable Python on macOS and Windows.
          - platform: macos-latest
            python-version: 3.11
          - platform: windows-latest
            python-version: 3.11
    steps:
    - uses: actions/checkout@v4
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python-version }}
        allow-prereleases: true
    - name: Install packages
      run: pip install tox coverage
    - name: Run Tox
      run: tox $TOX_OPTIONS -e py-cov
    - name: Run Tox without extra dependencies
      run: tox $TOX_OPTIONS -e py-cov-noextra
    - name: Produce coverage files
      run: |
        coverage combine
        coverage xml
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v4
      with:
        file: coverage.xml
        flags: unittests
        name: codecov-umbrella
        # TODO(anthrotype): Set fail_ci_if_error: true if/when Codecov becomes less flaky
        fail_ci_if_error: false
        # see https://github.com/codecov/codecov-action/issues/557
        token: ${{ secrets.CODECOV_TOKEN }}

  test-cython:
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    steps:
    - uses: actions/checkout@v4
    - name: Set up Python 3.x
      uses: actions/setup-python@v5
      with:
        python-version: "3.11"
    - name: Install packages
      run: pip install tox
    - name: Run Tox
      run: tox $TOX_OPTIONS -e py-cy

  test-pypy3:
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    steps:
    - uses: actions/checkout@v4
    - name: Set up Python pypy3
      uses: actions/setup-python@v5
      with:
        python-version: "pypy-3.9"
    - name: Install packages
      run: pip install tox
    - name: Run Tox
      run: tox $TOX_OPTIONS -e pypy3