How can I implement snapshot testing in my React application?

How can I implement snapshot testing in my React application?

You can implement snapshot testing in React using Jest. First, ensure you have Jest installed in your project.

What is a snapshot test exactly?

A snapshot test captures the rendered output of a component and saves it. It allows you to compare future renders to the saved snapshot.

How do I create a snapshot test for a component?

You can create a snapshot test by using the toMatchSnapshot() method in your test file after rendering the component.

Can you show me an example of a snapshot test?

Sure! Here's a simple example:

import React from 'react';
import { render } from '@testing-library/react';
import MyComponent from './MyComponent';

test('renders correctly', () => {
  const { asFragment } = render(<MyComponent />);
  expect(asFragment()).toMatchSnapshot();
});