👉 Jest is a popular JavaScript library for testing web applications. It allows developers to write unit tests and integration tests using Jest, a JavaScript test runner, in a single file. Jest's features include:
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Unit Testing
: Jest allows you to test individual components of your application.
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Integration Testing
: Jest can be used to test the behavior of multiple components or parts of an application together.
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Performance Testing
: Jest supports various performance metrics such as time complexity and space usage to measure the