Cypress

Summary

An end-to-end testing tool that runs tests inside a real browser, letting you script and watch full user flows (login, checkout, etc.) as they actually happen.

• 1Write a Cypress test that logs into a demo app and asserts a redirect.
• 2Use the Cypress Test Runner's time-travel debugging to inspect each step.
• 3Target elements with `data-cy` attributes rather than fragile CSS selectors.