import React from 'react'; import ReactDOM from 'react-dom'; import App from './App'; import {APIService} from "../service/APIService"; import {Pet} from "../model/pet"; it('renders without crashing', () => { const div = document.createElement('div'); const abstractPetService = (new class implements APIService{ forceSignOut(): Promise { return undefined; } deletePet(pet: Pet): Promise { return undefined; } getAllPets(): Promise { //TODO: implement return undefined; } savePet(pet: Pet): Promise { //TODO: implement return undefined; } }); ReactDOM.render(, div); ReactDOM.unmountComponentAtNode(div); });