text: import React from 'react';
  import Navbar from './navbar';
  import Enzyme, { shallow } from 'enzyme';
  import Adapter from 'enzyme-adapter-react-16';
  import { Toolbar, ToolbarIcon, ToolbarRow, ToolbarSection, ToolbarTitle } from '@rmwc/toolbar';
  
  Enzyme.configure({ adapter: new Adapter() });
  
  it('renders without crashing', () => {
    const wrapper = shallow(<Navbar />);
    expect(wrapper.find(Navbar));
    expect(wrapper.find(Navbar).containsMatchingElement(Toolbar));
    expect(wrapper.find(Toolbar).containsMatchingElement(ToolbarRow));
    expect(wrapper.find(ToolbarRow).containsMatchingElement(ToolbarSection));
    expect(wrapper.find(ToolbarSection).containsMatchingElement(ToolbarIcon));
    expect(wrapper.find(ToolbarSection).containsMatchingElement(ToolbarTitle));
  });
  