ci.yml

---
on:
  push:
    branches:
      - master
  pull_request:

name: CI

jobs:

  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python:
          - '3.12'
          - '3.11'
          - '3.10'
          - '3.9'
          - '3.8'
    name: Python ${{ matrix.python }}
    steps:
      # Python
      - name: Setup python ${{ matrix.python }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python }}

      # Check out code
      - uses: actions/checkout@v2

      # Cached dependencies
      - uses: actions/cache@v1
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-py${{ matrix.python }}-${{ hashFiles('**/requirements-dev.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-py${{ matrix.python }}-
      - name: Install dev dependencies
        # There's no virtual env in CI environment, just bypass it with a dummy
        # env var value
        run: VIRTUAL_ENV=none make install

      # Tests
      - name: Run tests
        run: pytest --ignore=tests/test_pattern_matching.py --ignore=tests/type_checking/test_result.yml
      - name: Run tests (type checking)
        if: matrix.python != '3.8' && matrix.python != '3.9'
        # These started breaking for <= 3.9, due to the type checker using a
        # '|' for unions rather than 'Union[...]', so it's not possible to run
        # the tests without maintaining two duplicate files (one for <= 3.9 and
        # one for > 3.9)
        run: pytest tests/type_checking/test_result.yml
      - name: Run tests (pattern matching)
        if: matrix.python == '3.10' || matrix.python == '3.11' || matrix.python == '3.12'
        run: pytest tests/test_pattern_matching.py

      # Linters
      - name: Run flake8 (Python >= 3.10)
        run: make lint-flake
        if: matrix.python != '3.9' && matrix.python != '3.8'
      - name: Run flake8 (Python < 3.10)
        run: make lint-flake-pre310
        if: matrix.python == '3.9' || matrix.python == '3.8'
      - name: Run mypy
        run: make lint-mypy

      # Packaging
      - name: Build packages
        run: |
          pip install --upgrade build pip setuptools wheel
          python -m build

      # Coverage
      - name: Upload coverage to codecov.io
        uses: codecov/codecov-action@v1
        if: matrix.python == '3.9'
        with:
          token: ${{ secrets.CODECOV_TOKEN }}