End-to-End Testing (Playwright/Cypress)

Summary

Testing your entire application exactly as a real user would — clicking through the actual React frontend, which makes real requests to your actual backend and database.

• 1Write one E2E test covering your app's most critical flow, e.g. signup then first action.
• 2Run it against a real (test) database, not mocked data, for genuine end-to-end confidence.
• 3Keep the E2E suite small and focused — they're valuable but slow and expensive to maintain.