ci.yml

name: CI

on:
  push:
    branches:
      - "master"
  pull_request:
  workflow_dispatch:

env:
  PIP_DISABLE_PIP_VERSION_CHECK: true
  PYTEST_ADDOPTS: "-vv"
  # Set TERM to some commonly used default
  # (not provided/setup by GitHub Actions by default).
  TERM: xterm-256color

jobs:
  tests:
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        include:
          # Linux
          - tox_env: "py39-coverage"
            python: "3.9"
            os: ubuntu-20.04
          - tox_env: "py38-coverage"
            python: "3.8"
            os: ubuntu-20.04
          - tox_env: "py37-coverage"
            python: "3.7"
            os: ubuntu-20.04
          - tox_env: "py36-coverage"
            python: "3.6"
            os: ubuntu-20.04
          - tox_env: "py35-coverage"
            python: "3.5"
            os: ubuntu-20.04

          - tox_env: "py27-coverage"
            python: "2.7"
            os: ubuntu-20.04

          - tox_env: "pypy3-coverage"
            python: "pypy-3.7"
            os: ubuntu-20.04
          - tox_env: "pypy-coverage"
            python: "pypy-2.7"
            os: ubuntu-20.04

    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Set up Python ${{ matrix.python }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python }}

      # Caching.
      - name: set PY_CACHE_KEY
        run: echo "PY_CACHE_KEY=$(python -c 'import hashlib, sys;print(hashlib.sha256(sys.version.encode()+sys.executable.encode()).hexdigest())')" >> $GITHUB_ENV
      - name: Cache .tox
        uses: actions/cache@v1
        with:
          path: ${{ github.workspace }}/.tox/${{ matrix.tox_env }}
          key: "tox|${{ matrix.os }}|${{ matrix.tox_env }}|${{ env.PY_CACHE_KEY }}|${{ hashFiles('tox.ini', 'setup.*') }}"

      - name: (Initial) version information/pinning
        run: |
          set -x
          python -m site
          python -m pip --version
          python -m pip list
          if [[ "${{ matrix.python }}" == "3.4" ]]; then
            # Install latest available pip.
            # 7.1.2 (installed) is too old to not install too new packages,
            # including pip itself.  19.2 dropped support for Python 3.4.
            python -m pip install -U pip==19.1.1
          fi
          python -m pip install -U setuptools==42.0.2
          python -m pip install -U virtualenv==20.4.3

      - name: Install tox
        run: python -m pip install git+https://github.com/blueyed/tox@master

      - name: Version information
        run: python -m pip list

      - name: Setup tox environment
        id: setup-tox
        run: python -m tox --notest -v --durations -e ${{ matrix.tox_env }}

      - name: Test
        env:
          COLUMNS: "90"  # better alignment (working around https://github.com/blueyed/pytest/issues/491).
          PY_COLORS: "1"
          # UTF-8 mode for Windows (https://docs.python.org/3/using/windows.html#utf-8-mode).
          PYTHONUTF8: "1"
          TOX_TESTENV_PASSENV: "PYTHONUTF8"
        run: python -m tox -v --durations -e ${{ matrix.tox_env }}

      - name: Report coverage
        if: always() && (steps.setup-tox.outcome == 'success' && contains(matrix.tox_env, '-coverage'))
        uses: codecov/codecov-action@v1
        with:
          files: ./coverage.xml
          flags: ${{ runner.os }}
          name: ${{ matrix.tox_env }}
          fail_ci_if_error: true