import React from 'react'; import ReactDOM from 'react-dom'; import App from './App'; import renderer from 'react-test-renderer'; import { exportAllDeclaration } from '@babel/types'; import {render} from '@testing-library/react'; import extendExpect from '@testing-library/jest-dom/extend-expect' it('renders without crashing', () => { const div = document.createElement('div'); ReactDOM.render(, div); ReactDOM.unmountComponentAtNode(div); }); describe('App', () => { it('renders the correct title', () => { const { getByTestId } = render(); expect(getByTestId('App')).toHaveTextContent('Phono Change Applier'); }) })