Implement end-to-end testing

E2E tests catch integration issues that unit tests miss—verifying your application works correctly from the user's perspective across all components.

Quick Reference

• Test critical user journeys: authentication, checkout, core business flows
• Use data-testid attributes for stable, maintainable selectors
• Implement Page Object Model for reusable test components
• Run E2E tests in CI/CD with artifact uploads on failure

Check

Review this project for E2E test coverage of critical user journeys like authentication, checkout, and form submissions.

Fix

Add E2E tests for critical user journeys using Playwright or Cypress.

Explain

Explain E2E testing best practices including test organization, selectors, and CI/CD integration.

Code Review

Review tests, CI workflows, and enforcement points related to Implement end-to-end testing. Flag exact gaps where the rule is not automatically verified or where failures do not block regressions.

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For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/testing/e2e-testing