import React from 'react' ; import ReactDOM from 'react-dom' ; import { MemoryRouter } from 'react-router-dom' ; import { App } from './app' ; describe ( '<App />' , ( ) => { test ( 'renders without exploding' , ( ) => { const div = document . createElement ( 'div' ) ; ReactDOM . render ( < MemoryRouter > < App revisionId = "0" / > < /MemoryRouter>, div); } ) ; } ) ;