How do I mock promises in React for testing?
An example of an AI chatbot conversation about mocking promises in React for testing.
How do I mock promises in React for testing?
You can use libraries like Jest to mock promises in your React tests. Would you like a code example?
Yes, please provide a code example.
Sure! Here's a simple example using Jest:
jest.mock('./api', () => ({
fetchData: jest.fn(() => Promise.resolve('data')),
}));
This mocks the fetchData function to return a resolved promise.
What if I want to test a rejected promise?
You can mock a rejected promise like this:
jest.mock('./api', () => ({
fetchData: jest.fn(() => Promise.reject(new Error('Error!'))),
}));
This will simulate an error during the fetch.
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