What are the differences between React Testing Library and React Hooks Testing Library?

What are the differences between React Testing Library and React Hooks Testing Library?

React Testing Library focuses on testing React components in a way that resembles how users interact with them. In contrast, React Hooks Testing Library is specifically designed for testing custom hooks.

Can you give me an example of how to test a custom hook?

Sure! You can use the renderHook function from React Hooks Testing Library to test a custom hook. For example:

import { renderHook } from '@testing-library/react-hooks';
import useCustomHook from './useCustomHook';

test('should return expected value', () => {
  const { result } = renderHook(() => useCustomHook());
  expect(result.current).toBe(expectedValue);
});

Is it possible to use both libraries together?

Yes, you can use both libraries together! You can test components with React Testing Library and use React Hooks Testing Library to test the hooks used within those components.

Which one should I use for my project?

It depends on your needs. If you're primarily testing components, go with React Testing Library. If you have a lot of custom hooks, consider using React Hooks Testing Library.