content: import React from 'react';
  import expect from 'expect';
  import { mount } from 'enzyme';
  
  import Circle from '../Circle';
  
  describe('<Circle />', () => {
    it('should render an <div> tag', () => {
      const renderedComponent = mount(<Circle />);
      expect(renderedComponent.find('div').length).toEqual(1);
    });
  
    it('should have a className attribute', () => {
      const renderedComponent = mount(<Circle />);
      expect(renderedComponent.find('div').prop('className')).toExist();
    });
  
    it('should not adopt attributes', () => {
      const id = 'test';
      const renderedComponent = mount(<Circle id={id} />);
      expect(renderedComponent.find('div').prop('id')).toNotExist();
    });
  });
  