Testing React components

In this section, we are going to implement tests on the Page, Question, and HomePage components. React component tests can be challenging because they have dependencies, such as the browser's DOM and sometimes HTTP requests. Due to this, we are going to leverage the React Testing Library and Jest's mocking functionality to help us implement our tests.

Testing the Page component

Carry out the following steps to test that the Page component renders correctly:

1. Create a file for the tests called Page.test.tsx with the following content:

   import React from 'react';
   import { render, cleanup } from '@testing-library/react';
   import { Page } from './Page';
   test('When the Page component is rendered, it should contain the correct title and content', () => {
     
   });

   We imported React with our Page component, along...