Chapter 13

1. Jest is a test library for JavaScript developed by Facebook.
2. Create a test file using the .test.js extension. Implement your test cases inside the file. You can run the tests using the npm run test command.
3. You can use fireEvent method that React testing library provides.
4. 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 run test command.