import React from 'react'; import ReactDOM from 'react-dom'; import api from '../src/api'; import indexToRender from '../src/index'; const custom_logo = (
logo
); const custom_login_info = 'custom login info'; jest.mock('react-dom', () => ({ render: jest.fn() })); describe('index.jsx', () => { test('renders without crashing', async () => { api.getRoot = jest.fn().mockImplementation(() => Promise .resolve({ data: { custom_logo, custom_login_info } })); await indexToRender(); expect(ReactDOM.render).toHaveBeenCalled(); }); });