How do I test Axios calls in Jest?

How do I test Axios calls in Jest?

You can use Jest's mocking capabilities to test Axios calls. First, mock Axios using jest.mock.

Can you show me a code example?

Sure! Here's a simple example:

import axios from 'axios';
import { fetchData } from './api'; // your function that makes an Axios call

jest.mock('axios');

test('fetches successfully data from an API', async () => {
  const data = { data: { results: [] } };
  axios.get.mockResolvedValue(data);

  const response = await fetchData();
  expect(response).toEqual(data.data);
});

What if I want to test error handling?

You can test error handling by mocking a rejected promise. Here's how:

axios.get.mockRejectedValue(new Error('Network Error'));

await expect(fetchData()).rejects.toThrow('Network Error');