Playwright E2E Testing Checklist

20 items · Technical · Hard difficulty · 2 hours

Essential Playwright E2E steps for reliable browser tests and CI pipelines.

• Install Node.js and Playwright browsers

  Install Node LTS, add Playwright package, and run 'npx playwright install' to fetch browsers.

• Initialize Playwright project and config file

  Create playwright.config.ts, set testDir, timeouts, and project browsers.

• Create Page Object Model (POM) structure
• Create a BasePage class with shared helpers

  Include common navigation, waits, and element helpers for reuse.

• Create per-page classes with selectors and actions

  Keep selectors and actions encapsulated to simplify tests.

• Export types and reusable fixtures for tests

  Share locator types and fixtures to enforce consistent APIs.

• Implement test data isolation strategy
• Provision an isolated test database or container per run

  Reset DB or use disposable containers to avoid cross-test pollution.

• Generate unique test data per test run

  Use timestamps or UUIDs for users, emails, and resources to avoid collisions.

• Create and reuse auth storageState for authenticated flows
• Generate storageState with a login script or Playwright flow

  Run a trusted login once to save state.json for reuse in tests.

• Load storageState in contextOptions and secure credentials

  Apply storageState to browserContext; keep secrets out of the repo.

• Configure parallel execution and worker limits in config

  Set workers, shard tests if needed, and monitor for flaky failures.

• Enable screenshots, traces, and videos on failure

  Turn on artifacts for failing tests to speed up debugging.

• Add visual snapshot baseline and comparison workflow

  Store baselines and review diffs; keep visuals under source control or CI artifacts.

• Integrate Playwright into CI and install browsers in pipeline

  Install Playwright browsers in CI before running tests and cache node modules.

• Upload test artifacts and HTML reports from CI

  Publish traces, videos, screenshots, and HTML reports as CI artifacts for review.

• Add retries, sensible timeouts, and flaky test annotations

  Use retries sparingly and annotate flaky tests for future fixes.

• Run tests locally in headed mode and use the inspector to debug

  Use 'npx playwright test --headed --debug' to interactively reproduce failures.

• Clean up test data and implement teardown scripts

  Remove created users and reset external state after runs to avoid pollution.

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