element-web/.github/workflows/cypress.yaml

# Triggers after the layered build has finished, taking the artifact and running cypress on it
name: Cypress End to End Tests
on:
  workflow_run:
    workflows: [ "Element Web - Build" ]
    types:
      - completed
jobs:
  # This job cannot have a pretty name due to https://github.com/haya14busa/action-workflow_run-status/issues/158
  cypress:
    if: github.event.workflow_run.conclusion == 'success'
    runs-on: ubuntu-latest
    permissions:
      actions: read
      statuses: write
      issues: read
      pull-requests: read
    environment: Cypress
    steps:
      # Wire up the status check for this workflow_run action
      - uses: haya14busa/action-workflow_run-status@967ed83efa565c257675ed70cfe5231f062ddd94 # v1.0.0

      - id: prdetails
        if: github.event.workflow_run.event == 'pull_request'
        uses: matrix-org/pr-details-action@v1.2
        with:
          owner: ${{ github.event.workflow_run.head_repository.owner.login }}
          branch: ${{ github.event.workflow_run.head_branch }}

      - uses: actions/checkout@v2
        with:
          # XXX: We're checking out untrusted code in a secure context
          # We need to be careful to not trust anything this code outputs/may do
          # We need to check this out to access the cypress tests which are on the head branch
          repository: ${{ github.event.workflow_run.head_repository.full_name }}
          ref: ${{ github.event.workflow_run.head_sha }}
          persist-credentials: false

      # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
      # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
      - name: 📥 Download artifact
        uses: dawidd6/action-download-artifact@v2
        with:
          workflow: element-build-and-test.yaml
          run_id: ${{ github.event.workflow_run.id }}
          name: previewbuild
          path: webapp

      - name: Get commit details
        if: github.event.workflow_run.event == 'pull_request'
        uses: actions/github-script@v5
        with:
          script: |
            const response = await github.rest.git.getCommit({
              owner: context.repo.owner,
              repo: context.repo.repo,
              commit_sha: "${{ github.event.workflow_run.head_sha }}",
            });
            core.exportVariable("COMMIT_INFO_MESSAGE", response.data.message);
            core.exportVariable("COMMIT_INFO_AUTHOR", response.data.author.name);
            core.exportVariable("COMMIT_INFO_EMAIL", response.data.author.email);            

      # Only run Percy when it is demanded or on develop
      - name: Disable Percy if not needed
        if: |
          github.event.workflow_run.event == 'pull_request' &&
          !contains(fromJSON(steps.prdetails.outputs.data).labels.*.name, 'X-Needs-Percy')          
        run: |
          echo "PERCY_ENABLE=0" >> $GITHUB_ENV          

      - name: Run Cypress tests
        uses: cypress-io/github-action@v4.1.1
        with:
          # The built-in Electron runner seems to grind to a halt trying
          # to run the tests, so use chrome.
          browser: chrome
          start: npx serve -p 8080 webapp
          wait-on: 'http://localhost:8080'
          record: true
          command-prefix: 'yarn percy exec --'
        env:
          # pass the Dashboard record key as an environment variable
          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
          # tell Cypress more details about the context of this run
          COMMIT_INFO_BRANCH: ${{ github.event.workflow_run.head_branch }}
          COMMIT_INFO_SHA: ${{ github.event.workflow_run.head_sha }}
          COMMIT_INFO_REMOTE: ${{ github.repositoryUrl }}

          # pass the Percy token as an environment variable
          PERCY_TOKEN: ${{ secrets.PERCY_TOKEN }}
          # Use existing chromium rather than downloading another
          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: true
          PERCY_BROWSER_EXECUTABLE: /usr/bin/chromium-browser
          # tell Percy more details about the context of this run
          PERCY_BRANCH: ${{ github.event.workflow_run.head_branch }}
          PERCY_COMMIT: ${{ github.event.workflow_run.head_sha }}
          PERCY_PULL_REQUEST: ${{ steps.prdetails.outputs.pr_id }}
          # pass GitHub token to allow accurately detecting a build vs a re-run build
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          # make Node's os.tmpdir() return something where we actually have permissions
          TMPDIR: ${{ runner.temp }}

      - name: Upload Artifact
        if: failure()
        uses: actions/upload-artifact@v2
        with:
          name: cypress-results
          path: |
            cypress/screenshots
            cypress/videos
            cypress/synapselogs            

      - name: Upload Benchmark
        uses: actions/upload-artifact@v2
        with:
          name: cypress-benchmark
          path: cypress/performance/measurements.json
          retention-days: 1

  store-benchmark:
    needs: cypress
    runs-on: ubuntu-latest
    if: |
      github.event.workflow_run.event != 'pull_request' &&
      github.event.workflow_run.head_branch == 'develop' &&
      github.event.workflow_run.head_repository.full_name == github.repository      
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v2

      - name: Download benchmark result
        uses: actions/download-artifact@v3
        with:
          name: cypress-benchmark

      - name: Store benchmark result
        uses: matrix-org/github-action-benchmark@jsperfentry-6
        with:
          name: Cypress measurements
          tool: 'jsperformanceentry'
          output-file-path: measurements.json
          # The dashboard is available at https://matrix-org.github.io/matrix-react-sdk/cypress/bench/
          benchmark-data-dir-path: cypress/bench
          fail-on-alert: false
          comment-on-alert: false
          github-token: ${{ secrets.GITHUB_TOKEN }}
          auto-push: ${{ github.event.workflow_run.event != 'pull_request' }}