14.3Sharding Across CI Machines

For large suites, split execution across multiple CI machines:

# Machine 1: runs first quarter of tests
npx playwright test --shard=1/4

# Machine 2: runs second quarter
npx playwright test --shard=2/4

# Machine 3: runs third quarter
npx playwright test --shard=3/4

# Machine 4: runs last quarter
npx playwright test --shard=4/4

GitHub Actions Example

# .github/workflows/e2e.yml
jobs:
  test:
    strategy:
      matrix:
        shard: [1/4, 2/4, 3/4, 4/4]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
      - run: npm ci
      - run: npx playwright install --with-deps
      - run: npx playwright test --shard=${{ matrix.shard }}
      - uses: actions/upload-artifact@v4
        if: always()
        with:
          name: test-results-${{ matrix.shard }}
          path: test-results/