code.yml

name: Unit Tests & Code Coverage

on:
  # Triggers the workflow on push or pull request events but only for the main branch
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch: # allow manual triggering

defaults:
  run:
    shell: bash -l {0}

jobs:
  lint:
    name: Code style
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Upgrade pip & test with pre-commit
        run: |
          set -vxeuo pipefail
          python -m pip install --upgrade pip
          python -m pip install pre-commit
          pre-commit run --all-files

  test-matrix:
    name: Python ${{ matrix.python-version }} # - Redis ${{ matrix.redis-version }}
    runs-on: ubuntu-latest
    needs: lint
    strategy:
      matrix:
        python-version:
          - "3.11"
          - "3.12"
          # - "3.13"  waiting for upstream packages
        # redis-version:
        #   # - "6"
        #   - "7"
      max-parallel: 5
    env:
      DISPLAY: ":99.0"

    steps:
      - uses: actions/checkout@v4

      - name: Install OS libraries to test Linux PyQt apps
        run: |
          sudo apt update -y
          sudo apt install -y \
            libxcb-icccm4 \
            libxcb-image0 \
            libxcb-keysyms1 \
            libxcb-randr0 \
            libxcb-render-util0 \
            libxcb-xinerama0 \
            libxcb-xfixes0 \
            libxkbcommon-x11-0 \
            screen \
            x11-utils \
            xvfb

      # FIXME: conflicts if redis is running on host (local runners)
      # - name: Start Redis
      #   uses: supercharge/redis-github-action@1.7.0
      #   with:
      #     redis-version: ${{ matrix.redis-version }}
      #     redis-remove-container: true # false by default

      - name: Create environment Python ${{ matrix.python-version }} # - Redis ${{ matrix.redis-version }}
        # needed for Unpack step
        uses: mamba-org/setup-micromamba@v2
        with:
          cache-environment: true
          cache-environment-key: env-key-${{ matrix.python-version }}
          condarc: |
            channels:
              - conda-forge
              - nodefaults
            channel-priority: flexible
          # environment-file: environment.yml
          environment-name: anaconda-test-env-py-${{ matrix.python-version }} # -${{ matrix.redis-version }}
          create-args: >-
            coveralls
            pytest
            pytest-cov
            pytest-qt
            pytest-xvfb
            python=${{ matrix.python-version }}
            setuptools-scm
            pyqt>5.15
            pyepics

      - name: Install this package with pip
        shell: bash -l {0}
        run: |
          set -vxeuo pipefail
          pip install -e .

      - name: Run tests with pytest & coverage
        shell: bash -l {0}
        run: |
          set -vxeuo pipefail
          coverage run --concurrency=thread --parallel-mode -m pytest -vvv --exitfirst .
          coverage combine
          coverage report --precision 3

      - name: Upload coverage data to coveralls.io
        shell: bash -l {0}
        run: |
          set -vxeuo pipefail
          micromamba list coveralls
          which coveralls
          coveralls debug
          if [ "${GITHUB_TOKEN}" != "" ]; then
            # only upload from GitHub runner
            coveralls --service=github
          else
            echo "No credentials for upload to coveralls."
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COVERALLS_FLAG_NAME: ${{ matrix.python-version }} # -${{ matrix.redis-version }}
          COVERALLS_PARALLEL: true

  # https://coveralls-python.readthedocs.io/en/latest/usage/configuration.html#github-actions-support
  coveralls:
    name: Report unit test coverage to coveralls
    needs: test-matrix
    runs-on: ubuntu-latest
    container: python:3-slim

    steps:
      - name: Gather coverage and report to Coveralls
        run: |
          set -vxeuo pipefail
          echo "Finally!"
          pip3 install --upgrade coveralls
          # debug mode: output prepared json and reported files list to stdout
          # https://coveralls-python.readthedocs.io/en/latest/troubleshooting.html
          coveralls debug
          if [ "${GITHUB_TOKEN}" != "" ]; then
            # only upload from GitHub runner
            coveralls --service=github --finish
          else
            echo "No credentials for upload to coveralls."
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}