How do I test async components in React Native?

How do I test async components in React Native?

To test async components in React Native, you can use libraries like Jest and React Testing Library. They provide utilities to handle async operations.

Can you give me an example of testing an async function?

Sure! You can use waitFor from React Testing Library to wait for async updates. For example:

import { render, waitFor } from '@testing-library/react-native';

test('loads async data', async () => {
  const { getByText } = render(<MyAsyncComponent />);
  await waitFor(() => getByText('Data Loaded'));
});

What about mocking API calls?

You can mock API calls using Jest's jest.mock function. This allows you to simulate API responses without making real network requests.

Are there any best practices for testing async components?

Yes! Some best practices include keeping tests isolated, using mock data, and ensuring that your tests are deterministic.