import React from 'react'; import { ApolloProvider } from '@apollo/react-hooks'; import ReactDOM from 'react-dom'; import App from './App'; import { mockApolloClient } from './test-helpers'; import * as subscriptions from './graphql/subscriptions'; it('renders without crashing', () => { const client = mockApolloClient([ { request: { query: subscriptions.messageAdded }, result: { data: {} }, }, ]); const div = document.createElement('div'); ReactDOM.render( , div ); ReactDOM.unmountComponentAtNode(div); });