How do I test React hooks effectively?

How do I test React hooks effectively?

To test React hooks, you can use libraries like React Testing Library or Enzyme. They provide utilities to render components and test hooks in isolation.

Can you show me an example of testing a custom hook?

Sure! Here's a simple example using React Testing Library:

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);
});

What about testing hooks that use context?

For hooks that use context, you can wrap your hook in a context provider when rendering it in your tests. This way, the hook can access the context values.

Are there any best practices for testing hooks?

Yes! Some best practices include testing hooks in isolation, using meaningful test names, and ensuring your tests are easy to read and maintain.