text: import React from 'react';
  import ReactDOM from 'react-dom';
  import App from '../Components/App';
  import appInit from '../app-init';
  import { configure } from 'enzyme';
  import Adapter from 'enzyme-adapter-react-16/build/index';
  import MuiThemeProvider from '@material-ui/core/styles/MuiThemeProvider';
  import { BrowserRouter } from 'react-router-dom';
  import {createMuiTheme} from '@material-ui/core/styles/index';
  
  const themeDark = createMuiTheme({
      palette: {
          type: 'dark'
      }
  });
  
  configure({ adapter: new Adapter() });
  
  describe('Jest App Tests', function() {
  
      it('renders without crashing', () => {
          const div = document.createElement('div');
          ReactDOM.render(
              <MuiThemeProvider theme={themeDark}>
                  <BrowserRouter>
                      <App appInit={appInit}/>
                  </BrowserRouter>
              </MuiThemeProvider>,
              div
          );
          ReactDOM.unmountComponentAtNode(div);
      });
  
      it('renders without crashing', () => {
          const div = document.createElement('div');
          ReactDOM.render(<App appInit={appInit}/>, div);
          ReactDOM.unmountComponentAtNode(div);
      });
  
  });