name: Tests

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      max-parallel: 4
      matrix:
        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9"]

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install tox tox-gh-actions
    - name: Test with tox
      run: tox
      env:
        TOXENV: ${{ matrix.toxenv }}