text: import React from 'react';
  import ReactDOM from 'react-dom';
  import App from '../App';
  import { shallow } from 'enzyme';
  import PageContainer from '../containers/PageContainer';
  
  describe('App', () => {
    let wrapper;
  
    it('renders without crashing', () => {
      const div = document.createElement('div');
      ReactDOM.render(<App />, div);
      ReactDOM.unmountComponentAtNode(div);
    });
  
    beforeEach(() => {
      wrapper = shallow(<App/>);
    })
  
    it('render a <PageContainer>', () => {
      expect(wrapper.childAt(0).type()).toBe(PageContainer)
    })
  });