text: import React from 'react'
  import { mount } from 'enzyme'
  import { assert } from 'chai'
  
  import Header from '../components/Header'
  
  describe('<Header/>', function() {
      it('should show title', function() {
          const title = 'Marvel Comics';
          const wrapper = mount(<Header title={title}/>);
  
          assert(wrapper.find('.mdl-layout-title').text(), title);
      })
  });