Why TypeError: axios.create is not a function? When testing axios GET

Question

I'm trying to test my axios API functions in React.

Found this question here: how do i test axios in jest which pointed to using axios-mock-adapter

import axios from 'axios';
import MockAdapter from 'axios-mock-adapter';
import chatbot from './chatbot';

describe('Chatbot', () => {
    it('returns data when sendMessage is called', done => {
        var mock = new MockAdapter(axios);
        const data = { response: true };
        mock.onGet('https://us-central1-hutoma-backend.cloudfunctions.net/chat').reply(200, data);

        chatbot.sendMessage(0, 'any').then(response => {
            expect(response).toEqual(data);
            done();
        });
    });
});

---

The real function:

/**
 * Retrieve all Akamai images
 * @param  {String} akamai Akamai url
 * @return {Thenable}      Resolved: Akamai images
 */
export const callGetAkamai = () =>
  makeRequest('/akamai', 'GET')
    .catch(defaultCatch('callGetAkamai'));

My test:

import axios from 'axios';
import MockAdapter from 'axios-mock-adapter';
import { callGetAkamai } from './api';

describe('GetAkamai', () => {
  it('returns data when callGetAkamai is called', (done) => {
    console.log('MockAdapter', MockAdapter);
    const mock = new MockAdapter(axios);
    // const mock = axios.create({
    //   baseURL: 'https://us-central1-hutoma-backend.cloudfunctions.net/chat/'
    // });

    const data = { response: true };
    mock.onGet('https://us-central1-hutoma-backend.cloudfunctions.net/chat').reply(200, data);

    callGetAkamai().then((response) => {
      expect(response).toEqual(data);
      done();
    });
  });
});

Answer 1

Are you mocking axios already? I have run into this issue myself, and after looking in all the wrong places, I realized I was already mocking axios with jest.

Put the following snippet in your setupTestFrameworkScriptFile:

const mockNoop = () => new Promise(() => {});

// Notice how `create` was not being mocked here...
jest.mock('axios', () => ({
  default: mockNoop,
  get: mockNoop,
  post: mockNoop,
  put: mockNoop,
  delete: mockNoop,
  patch: mockNoop
}));

While you might be able to do both, if you are using the axios-mock-adapter, you might want to remove your other mocks (and skip the snippet above).