Use when reviewing CI coverage, automated checks, or test strategy related to Implement end-to-end testing. Focus on whether the rule is continuously verified, not just documented.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 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.
---
For full implementation details, code examples, and framework-specific guidance,
see `references/rule.md`.
Rule page: https://frontendchecklist.io/rules/testing/e2e-testing
The line at the top of this page pins the label git:20261004.4b0ddb9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_uomkcmu22srxk77w
GET https://markdownregistry.com/api/v1/resolve?ref=thedaviddias/front-end-checklist/e2e-testing
GET https://markdownregistry.com/api/v1/blob/56252a8c4f0e2de6ab463ee02ae6368ad735e9b992ef93db0c366413d6279e96
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Trigger when the user…
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