ci_workflow.yml

name: CI

on:
  push:
    branches:
    - 'gh-pages'
  pull_request:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  initial_checks:
    name: Mandatory checks before CI
    runs-on: ubuntu-latest
    steps:
    - name: Check base branch
      uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea  # v7.0.1
      if: github.event_name == 'pull_request'
      with:
        script: |
          const skip_label = 'skip-basebranch-check';
          const allowed_basebranch = 'gh-pages';
          const pr = context.payload.pull_request;
          if (pr.labels.find(lbl => lbl.name === skip_label)) {
            core.info(`Base branch check is skipped due to the presence of ${skip_label} label`);
            return;
          }
          if (pr.base.ref !== allowed_basebranch) {
            core.setFailed(`PR opened against ${pr.base.ref}, not ${allowed_basebranch}`);
          } else {
            core.info(`PR opened correctly against ${allowed_basebranch}`);
          }

  # The rest only run if above are done

  tests:
    runs-on: ubuntu-latest
    needs: initial_checks
    steps:
    - name: Checkout code
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
    - name: Set up Python
      uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b  # v5.3.0
      with:
        python-version: '3.x'
    - name: Install Python dependencies
      run: python -m pip install wheel pytest
    - name: Run tests
      run: pytest tests