# Jest 🃏 Delightful JavaScript Testing * **👩🏻‍💻 Easy Setup**: Jest is a complete and easy to set up JavaScript testing solution. In fact, Jest works out of the box for any React project. * **🏃🏽 Instant Feedback**: Failed tests run first. Fast interactive mode can switch between running all tests or only test files related to changed files. * **📸 Snapshot Testing**: Jest can [capture snapshots](http://facebook.github.io/jest/docs/snapshot-testing.html) of React trees or other serializable values to simplify UI testing. Read More: http://facebook.github.io/jest/