ci.yaml

name: CI

on:
  push:
    branches: [ trunk ]
  pull_request:
    branches: [ trunk ]

jobs:
  lint:
    runs-on: ubuntu-20.04
    timeout-minutes: 5

    steps:
    - uses: actions/checkout@v4

    - uses: actions/setup-python@v5
      with:
        python-version: '3.12'

    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key:
          ${{ runner.os }}-pip-lint-${{ hashFiles('pyproject.toml', 'setup.py', 'tox.ini') }}
        restore-keys: |
          ${{ runner.os }}-pip-lint-
          ${{ runner.os }}-pip-

    - run: python -m pip install 'tox<4'

    - run: tox -q -p all -e flake8,towncrier,twine,check-manifest,mypy
      env:
        TOX_PARALLEL_NO_SPINNER: 1

  docs:
    runs-on: ubuntu-20.04
    timeout-minutes: 5

    steps:
    - uses: actions/checkout@v4

    - uses: actions/setup-python@v5
      with:
        python-version: "3.12"

    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key:
          ${{ runner.os }}-pip-docs-${{ hashFiles('pyproject.toml', 'setup.py', 'tox.ini') }}
        restore-keys: |
          ${{ runner.os }}-pip-docs-
          ${{ runner.os }}-pip-

    - run: python -m pip install 'tox<4'

    - run: tox -q -e docs


  test:
    name: "Test ${{ matrix.python-version }} with ${{ matrix.twisted-version }} Twisted"
    runs-on: ubuntu-20.04
    timeout-minutes: 10
    continue-on-error: ${{ matrix.experimental }}
    strategy:
      matrix:
          # Python versions common to lowest and latest
          python-version: ["3.8", "3.9", "3.10", "pypy-3.9"]
          twisted-version: ["lowest", "latest"]
          experimental: [false]

          include:

          # Pythons too new for lowest
          - python-version: "3.11"
            twisted-version: "latest"
            experimental: false

          - python-version: "3.12"
            twisted-version: "latest"
            experimental: false

          - python-version: "pypy-3.10"
            twisted-version: "latest"
            experimental: false

          # Experimental trunk build
          - python-version: "3.9"
            twisted-version: "trunk"
            experimental: true

    steps:
    - uses: actions/checkout@v4

    - uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python-version }}

    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key:
          ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('pyproject.toml', 'setup.py', 'tox.ini') }}
        restore-keys: |
          ${{ runner.os }}-pip-${{ matrix.python-version }}-
          ${{ runner.os }}-pip-

    - name: Translate Python version to Tox factor
      id: pyfactor
      shell: python
      run: |
        table = {
          "3.8": "py38",
          "3.9": "py39",
          "3.10": "py310",
          "3.11": "py311",
          "3.12": "py312",
          "pypy-3.8": "pypy3",
          "pypy-3.9": "pypy3",
          "pypy-3.10": "pypy3",
        }
        factor = table["${{ matrix.python-version }}"]
        print("::set-output name=value::" + factor)

    - run: python -m pip install tox coveralls

    - run: tox -e ${{ steps.pyfactor.outputs.value }}-twisted_${{ matrix.twisted-version }}

    - run: coveralls
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        COVERALLS_REPO_TOKEN: 4nctuKHTnVtbdmty2FgdO3iiWm1nb7xc4
        COVERALLS_FLAG_NAME: python_${{ matrix.python-version }}-twisted_${{ matrix.twisted-version }}
        COVERALLS_PARALLEL: true

  # Helper so that on GitHub repo settings we can configure to single job.
  # Then required jobs can be updated directly form the code,
  # without having to go the GitHub repo setting -> Protected branch
  # and all the clicking.
  treq-required:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    if: ${{ !cancelled() }}
    # Add here the jobs that should block the merge of a PR.
    needs:
      - lint
      - docs
      - test
    steps:
      - name: Require all successes
        shell: python3 {0}
        env:
          RESULTS: ${{ toJSON(needs.*.result) }}
        run: |
          import json
          import os
          import sys
          results = json.loads(os.environ["RESULTS"])
          sys.exit(0 if all(result == "success" for result in results) else 1)