name: Tests

on:
  push:
    branches: [ master ]
    tags: [ '[0-9]+.[0-9]+.[0-9]+*' ]
  pull_request:
    branches: [ master ]

jobs:

  linters:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: '3.8'

    - name: Install pre-commit
      run: |
        pip install pre-commit

    - name: run linters
      # pre-commit also runs in pre-commit.ci, but let's have it here too
      # to block `pypi-publish` job from triggering if pre-commit fails
      run: |
        pre-commit run -a

  tests:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        python-version: ['pypy-3.7', '3.7', '3.8', '3.9', '3.10', '3.11-dev']
        os: [ubuntu-latest, macos-latest, windows-latest]
    continue-on-error: ${{ matrix.python-version == '3.11-dev' }}

    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 test deps
      run: |
        pip install -r tests/requirements.txt

    - name: Test with pytest
      run: |
        # Use 'python -m pytest' to add CWD to sys.path
        python -m pytest --cov --cov-fail-under=100

    - name: Test with unittest
      run: |
        python -m unittest

    - name: Report coverage
      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10'
      uses: codecov/codecov-action@v2

  test-built-package:
    runs-on: ubuntu-latest
    # Allow this to fail. A failure is possible even if the package is working,
    # because test dependencies may rely on a Tomli version incompatible with
    # the current state.
    continue-on-error: true

    steps:
    - uses: actions/checkout@v2

    - uses: actions/setup-python@v2
      with:
        python-version: '3.7'

    - name: Install (deps and package)
      run: |
        pip install . -r tests/requirements.txt

    - name: Test with pytest
      run: |
        pytest --import-mode=append

  allgood:
    runs-on: ubuntu-latest
    needs:
    - tests
    - linters
    steps:
    - run: echo "Great success!"

  pypi-publish:
    # Only publish if all other jobs succeed
    needs: [ allgood ]
    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: '3.7'
    - name: Install build and publish tools
      run: |
        pip install build twine
    - name: Build and check
      run: |
        rm -rf dist/ && python -m build
        twine check --strict dist/*
    - name: Publish
      run: |
        twine upload dist/*
      env:
        TWINE_USERNAME: __token__
        TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}