name: Test

on: [push, pull_request]

jobs:
  build:
    name: build (Python ${{ matrix.python-version }}, Django ${{ matrix.django-version }})
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ['3.7', '3.8', '3.9', '3.10']
        django-version: ['2.2', '3.1', '3.2', '4.0', 'main']
        exclude:
        # Django prior to 3.2 does not support Python 3.10
        - django-version: '2.2'
          python-version: '3.10'
        - django-version: '3.1'
          python-version: '3.10'
        # Django after 3.2 dropped support for Python prior to 3.8
        - django-version: '4.0'
          python-version: '3.7'
        - django-version: 'main'
          python-version: '3.7'

    steps:
    - uses: actions/checkout@v3

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v4
      with:
        python-version: ${{ matrix.python-version }}

    - name: Get pip cache dir
      id: pip-cache
      run: |
        echo "::set-output name=dir::$(pip cache dir)"

    - name: Cache
      uses: actions/cache@v3
      with:
        path: ${{ steps.pip-cache.outputs.dir }}
        key:
          ${{ matrix.python-version }}-v1-${{ hashFiles('**/setup.py') }}
        restore-keys: |
          ${{ matrix.python-version }}-v1-

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        python -m pip install --upgrade tox tox-gh-actions

    - name: Tox tests
      run: |
        tox -v
      env:
        DJANGO: ${{ matrix.django-version }}

    - name: Upload coverage
      uses: codecov/codecov-action@v3
      with:
        name: Python ${{ matrix.python-version }}