This is a
playground to test code. It runs a full
Node.js environment and already has all of
npm’s 1,000,000+ packages pre-installed, including
jest-cli with all
npm packages installed. Try it out:
This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.
🏃🏽 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 of React trees or other serializable values to simplify UI testing.
Read More: https://jestjs.io/