What is the advanced testing library and how do I use it?

What is the advanced testing library and how do I use it?

The advanced testing library is a set of tools designed to simplify testing in software development, particularly for React applications. It provides utilities to test components in a way that resembles how users interact with them.

Can you give me an example of how to test a React component using this library?

Sure! Here's a simple example: You can use the render function from the library to render your component and then use queries like getByText to find elements. For instance:

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

test('renders learn react link', () => {
  render(<MyComponent />);
  const linkElement = screen.getByText(/learn react/i);
  expect(linkElement).toBeInTheDocument();
});

What are some best practices for using the advanced testing library?

Some best practices include: 1) Write tests that resemble user interactions, 2) Avoid implementation details in tests, 3) Use screen queries for better readability, and 4) Keep tests isolated and focused on one behavior.

How do I handle asynchronous code in my tests?

You can handle asynchronous code by using async/await in your test functions. For example, if you're testing a component that fetches data, you can wait for the element to appear using waitFor or findBy queries.