name: Tests
on: push
jobs:
  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ['3.6.13', '3.7', '3.8']
    name: Python ${{ matrix.python-version }}
    steps:
      - name: Checkout Code
        uses: actions/checkout@v2

      - name: Setup Python ${{ matrix.python-version }}
        uses: actions/setup-python@v1
        with:
          python-version: ${{ matrix.python-version }}
          architecture: x64

      - name: Install Poetry
        uses: snok/install-poetry@v1.1.1
        with:
          virtualenvs-create: true
          virtualenvs-in-project: true

      - name: Load cached venv
        id: cached-poetry-dependencies
        uses: actions/cache@v2
        with:
          path: .venv
          key: venv-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}

      - name: Install dependencies
        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
        run: poetry install --no-interaction --no-root

      - name: Run tests
        env:
          MPLBACKEND: Agg
        run: |
          source .venv/bin/activate
          pytest tests/