tox-tests.yaml

---
name: 👷tests

on:
  create:
  push:
  pull_request:
  schedule:
  - cron: 1 0 * * *  # Run daily at 0:01 UTC

jobs:
  tests:
    if: >-  # https://twitter.com/webKnjaZ/status/1308803017001652225
      github.event_name != 'create' ||
      github.ref_type == 'tag'
    name: >-
      ${{ matrix.python-version }}
      /
      ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        python-version:
        - 3.9
        - 3.8
        - 3.7
        - 3.6
        os:
        - ubuntu-18.04
        - ubuntu-20.04
        - macos-latest
        - macos-11.0
        - windows-latest

    env:
      PY_COLORS: 1
      TOX_PARALLEL_NO_SPINNER: 1
      TOXENV: python

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: >-
        Calculate Python interpreter version hash value
        for use in the cache key
      id: calc_cache_key_py
      run: |
        from hashlib import sha512
        from sys import version
        hash = sha512(version.encode()).hexdigest()
        print(f'::set-output name=py_hash_key::{hash}')
      shell: python
    - name: Set up pip cache
      uses: actions/cache@v2
      with:
        path: ~/.cache/pip
        key: >-
          ${{ runner.os }}-pip-${{
          steps.calc_cache_key_py.outputs.py_hash_key }}-${{
          hashFiles('setup.cfg') }}-${{
          hashFiles('tox.ini') }}-${{
          hashFiles('pyproject.toml') }}-${{
          hashFiles('.pre-commit-config.yaml') }}
        restore-keys: |
          ${{ runner.os }}-pip-${{ steps.calc_cache_key_py.outputs.py_hash_key }}-
          ${{ runner.os }}-pip-
          ${{ runner.os }}-
    - name: Install tox
      run: |
        python -m pip install --upgrade tox
    - name: Log installed dists
      run: |
        python -m pip freeze --all
    - name: Initialize tox envs
      run: |
        python -m tox --parallel auto --parallel-live --notest
    - name: Test with tox
      run: |
        python -m tox --parallel auto --parallel-live

  publish:
    needs:
    - tests
    name: Build and publish Python 🐍 distributions 📦 to PyPI and TestPyPI
    runs-on: ubuntu-latest
    env:
      PY_COLORS: 1
      TOX_PARALLEL_NO_SPINNER: 1
      TOXENV: build-dists
    steps:
    - name: Check out src from Git
      uses: actions/checkout@v2
      with:
        # Get shallow Git history (default) for tag creation events
        # but have a complete clone for any other workflows.
        # Both options fetch tags but since we're going to remove
        # one from HEAD in non-create-tag workflows, we need full
        # history for them.
        fetch-depth: >-
          ${{
            (
              github.event_name == 'create' &&
              github.event.ref_type == 'tag'
            ) &&
            1 || 0
          }}
    - name: Drop Git tags from HEAD for non-tag-create events
      if: >-
        github.event_name != 'create' ||
        github.event.ref_type != 'tag'
      run: >-
        git tag --points-at HEAD
        |
        xargs git tag --delete
    - name: Instruct setuptools-scm not to add a local version part
      if: >-
        github.event_name == 'push' &&
        github.ref == format(
          'refs/heads/{0}', github.event.repository.default_branch
        )
      run: |
        echo 'local_scheme = "no-local-version"' >> pyproject.toml
        git update-index --assume-unchanged pyproject.toml
    - name: Set up Python 3.9
      uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install tox
      run: |
        python -m pip install --upgrade tox
    - name: Initialize tox envs
      run: |
        python -m tox --parallel auto --parallel-live --notest
    - name: Build dists with tox
      run: |
        python -m tox --parallel auto --parallel-live
    - name: Publish distribution 📦 to Test PyPI
      if: >-
        (
          github.event_name == 'push' &&
          github.ref == format(
            'refs/heads/{0}', github.event.repository.default_branch
          )
        ) ||
        (
          github.event_name == 'create' &&
          github.event.ref_type == 'tag'
        )
      uses: pypa/gh-action-pypi-publish@master
      with:
        password: ${{ secrets.TEST_PYPI_PASSWORD }}
        repository_url: https://test.pypi.org/legacy/
    - name: Publish distribution 📦 to PyPI
      if: >-  # "create" workflows run separately from "push" & "pull_request"
        github.event_name == 'create' &&
        github.event.ref_type == 'tag'
      uses: pypa/gh-action-pypi-publish@master
      with:
        password: ${{ secrets.PYPI_PASSWORD }}
...