frontend_tests.yml

name: Frontend Karma tests
on:
  merge_group:
    types: [checks_requested]
  push:
    branches:
      - develop
      - release-*
  pull_request:
    branches:
      - develop
      - release-*

jobs:
  generate-job-strategy-matrix:
    runs-on: ubuntu-22.04
    outputs:
      job-strategy-matrix: ${{ steps.generate.outputs.job-strategy-matrix }}
    steps:
      - name: Generate job strategy matrix
        id: generate
        env:
          standard-test-runs: 2
          flakes-test-runs: 40
        run: |
          if ${{ github.event_name == 'push' && github.repository == 'oppia/oppia' && github.ref == 'refs/heads/develop'}}
          then
            JOB_STRATEGY_MATRIX=$(node -e "let r=[]; for(let i = 1; i <= ${{ env.flakes-test-runs }}; i++) { r.push(i) }; console.log(JSON.stringify(r));")
            echo "job-strategy-matrix=$JOB_STRATEGY_MATRIX" >> $GITHUB_OUTPUT
          else
            JOB_STRATEGY_MATRIX=$(node -e "let r=[]; for(let i = 1; i <= ${{ env.standard-test-runs }}; i++) { r.push(i) }; console.log(JSON.stringify(r));")
            echo "job-strategy-matrix=$JOB_STRATEGY_MATRIX" >> $GITHUB_OUTPUT
          fi
  frontend-karma-tests:
    needs: generate-job-strategy-matrix
    runs-on:  ${{ matrix.os }}
    strategy:
      max-parallel: 25
      matrix:
        os: [ubuntu-22.04]
        num_runs: ${{ fromJson(needs.generate-job-strategy-matrix.outputs.job-strategy-matrix) }}
      fail-fast: false
    steps:
      - uses: actions/checkout@v3
      - name: Describe filesystem
        run: |
          pwd
          ls /home/runner/work
          ls /home/runner/work/oppia
          ls /home/runner/work/oppia/oppia
          echo $GITHUB_WORKSPACE
      - uses: actions/setup-python@v4
        with:
          python-version: '3.8.15'
          architecture: 'x64'
      - uses: ./.github/actions/merge
      - name: Cache node modules and third_party/static
        uses: actions/cache@v3
        env:
          cache-name: cache-node-modules
        with:
          path: |
            /home/runner/work/oppia/yarn_cache
            /home/runner/work/oppia/oppia/third_party/static
          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('yarn.lock', 'dependencies.json') }}
          restore-keys: |
            ${{ runner.os }}-build-${{ env.cache-name }}-
            ${{ runner.os }}-build-
            ${{ runner.os }}-
      - uses: ./.github/actions/install-oppia-dependencies
      - name: Suppress ENOSPC error from chokidar file watcher. See https://stackoverflow.com/a/32600959.
        run: echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
      - name: Run frontend tests ${{ matrix.num_runs }}
        run: PYTHONIOENCODING=utf-8 python -m scripts.run_frontend_tests --run_minified_tests --skip_install --check_coverage
      - name: Uploading fronted coverage reports as an artifact
        if: ${{ failure() }}
        uses: actions/upload-artifact@v3
        with:
          name: frontend-coverage-${{ matrix.num_runs }}
          path: /home/runner/work/oppia/karma_coverage_reports
  report-failure:
    needs: frontend-karma-tests
    runs-on: ubuntu-22.04
    if: ${{ failure() && github.event_name == 'push' && github.repository == 'oppia/oppia' && github.ref == 'refs/heads/develop'}}
    steps:
      - uses: actions/checkout@v3
      - name: Report failure if failed on oppia/oppia develop branch
        uses: ./.github/actions/send-webhook-notification
        with:
          message: "A frontend test failed on the upstream develop branch."
          webhook-url: ${{ secrets.BUILD_FAILURE_ROOM_WEBHOOK_URL }}