labs_test.yml

# This workflow can be tested with `act`: sources/bin/tests/test_labs_test.sh

name: Test changed Lab pages

on:
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  test-changed-labs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0  # ensure full history for merge-base diff

      - name: Set up Python
        uses: actions/setup-python@v7
        with:
          python-version: '3.13'

      - name: Get list of changed files
        id: changed-files
        run: |
          # In a real GitHub PR workflow, checkout action checks out the merge commit by default
          # We need to switch to the actual PR head to get the correct diff
          echo "Current commit: $(git rev-parse HEAD)"
          echo "PR head SHA: ${{ github.event.pull_request.head.sha }}"
          
          # Switch to PR head for accurate diff calculation  
          git checkout ${{ github.event.pull_request.head.sha }} 2>/dev/null || echo "Using current checkout (local testing)"

          # For local testing, check if upstream remote already exists, otherwise try to add it
          if ! git remote get-url upstream >/dev/null 2>&1; then
            # Check if we can add the upstream remote (for real GitHub workflows)
            URL="https://github.com/${{ github.event.pull_request.base.repo.full_name }}/archive/refs/heads/${{ github.event.pull_request.base.ref }}.tar.gz"
            HTTP_STATUS_LINE=$(curl -s --head "$URL" | head -n 1)
            if echo "$HTTP_STATUS_LINE" | grep -q "200 OK"; then
              git remote add upstream https://github.com/${{ github.event.pull_request.base.repo.full_name }}.git
              git fetch --no-tags --depth=1 upstream ${{ github.event.pull_request.base.ref }}
              BASE_REF="upstream/${{ github.event.pull_request.base.ref }}"
            else
              # For local testing, use local main branch as base
              echo "Using local ${{ github.event.pull_request.base.ref }} branch for comparison (local testing mode)"
              BASE_REF="${{ github.event.pull_request.base.ref }}"
            fi
          else
            git fetch --no-tags --depth=1 upstream ${{ github.event.pull_request.base.ref }}
            BASE_REF="upstream/${{ github.event.pull_request.base.ref }}"
          fi

          # diff between the base and PR head
          git diff --name-only $BASE_REF...HEAD | grep '/lab/' > paths.txt || true
          echo ""
          echo "Changed files:"
          cat paths.txt
          mkdir -p output
          mv paths.txt output/

      - name: Test changed Lab pages
        id: test-labs
        env:
          BRANCH_NAME: ${{ github.event.pull_request.head.ref }}
          HEAD_REPO: ${{ github.event.pull_request.head.repo.full_name }}
        run: |
          if [ -s output/paths.txt ]; then
            echo "Changed files found"
            if [ -f "sources/bin/labs_test.py" ]; then
              python3 sources/bin/labs_test.py output/paths.txt
            else
              echo "labs_test.py not found - skipping lab tests (this is expected for testing)"
              exit 0
            fi
          else
            echo "No changes to Galaxy Labs found"
          fi
        continue-on-error: true

      - name: Write pull request variables to env.sh
        env:
          PR_NUMBER: ${{ github.event.number }}
          BRANCH_NAME: ${{ github.event.pull_request.head.ref }}
          HEAD_REPO: ${{ github.event.pull_request.head.repo.full_name }}
          BASE_REPO: ${{ github.repository }}
        run: |
          echo "export PR_NUMBER=${PR_NUMBER}" >> output/env.sh
          echo "export BASE_REPO=${BASE_REPO}" >> output/env.sh

      - name: Upload test result comments artifact
        uses: actions/upload-artifact@v7
        with:
          name: labs_test_comments
          path: output

      - name: Check outcome of the previous step
        id: check-outcome
        run: |
          if [ "${{ steps.test-labs.outcome }}" == "failure" ]; then
            echo "Test failed"
            exit 1
          else
            echo "Test passed"
          fi