What is Jest and how is it used with React?

Jest is a JavaScript testing framework created by Facebook, commonly used for testing

React applications. It comes with:

• Test runner: Executes test files.
• Assertions: Provides functions like expect() for asserting conditions.
• Mocks: Mocking capabilities for API calls or functions.
• Snapshots: Captures UI output at a given time.

How to use Jest with React:

Install Jest:

npm install --save-dev jest