content: import React from 'react';
  import { shallow } from 'enzyme';
  import chaiEnzyme from 'chai-enzyme';
  import chai, { expect } from 'chai';
  import Footer from '../../components/Footer';
  
  chai.use(chaiEnzyme());
  const wrapper = shallow(<Footer />);
  describe('Test Footer component', () => {
    it('component should exist', () => {
      expect(wrapper).to.be.present();
    });
    it('should have one direct child', () => {
      expect(wrapper.children()).to.have.length(1);
    });
    it('component should have class name', () => {
      expect(wrapper.find('footer')).to.have.className('page-footer');
    });
    it('component should a have a tag with a class name `footer-copyright`', () => {
      expect(wrapper.find('.footer-copyright')).be.present();
    });
    it('component should have two tags with class of container', () => {
      expect(wrapper).to.have.exactly(2).descendants('.container');
    });
  });
  