- Jest is a test library for JavaScript developed by Facebook.
- Create a test file using the .test.js extension. Implement your test cases inside the file. You can run the tests using the npm test command.
- For snapshot testing, you have to install the react-test-render package and import renderer to your test file. Implement your snapshot test cases inside the file and run the tests using the npm test command.
- Enzyme is a JavaScript library for testing the React component's output.
- Using the following npm command, npm install enzyme enzyme-adapter-react-16 --save-dev, we can install Enzyme.
- You have to import the Enzyme and Adapter components to your test file. Then, you can create your test cases to render a component. With Enzyme, you can use Jest for assertions. Enzyme provides the simulate method that can be used to test events.
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