src/components/App/App.spec.js
import React from 'react';
import { render } from '@testing-library/react';
import '@testing-library/jest-dom/extend-expect';
import App from './App';
it('renders without crashing', () => {
const { getByTestId } = render(<App />);
const AppComponent = getByTestId('App');
expect(AppComponent).toBeInTheDocument();
});