old_contents: import React from 'react';
  import { shallow } from 'enzyme';
  import expect from 'expect';
  import expectJSX from 'expect-jsx';
  import { createRenderer } from 'react-addons-test-utils';
  import MDTopNav from 'src/MDTopNav';
  
  expect.extend(expectJSX);
  
  describe('MDTopNav', () => {
  
    describe('default case', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(<MDTopNav />);
      });
  
      it('should have no default props', () => {
        expect(Object.keys(wrapper.props()).length).toEqual(2);
      });
  
      it('should have a default logo', () => {
        expect(wrapper.find('img').length).toEqual(1);
      });
  
      it('should not have items', () => {
          wrapper
            .childAt(0)
            .childAt(1)
            .children()
            .forEach(node => expect(node.type()).toBe(null));
      });
  
    });
  
    describe('with items, without urls', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
          />
        );
      });
  
      it('should render divs if given only items', () => {
        const itemList = wrapper
          .childAt(0)
          .childAt(1)
          .children();
  
        expect(itemList.length).toBe(2);
  
        itemList
          .children()
          .forEach(node => expect(node.type()).toBe('div'));
        itemList
          .children()
          .forEach(node => expect(node.type().toBe(null)));
      });
  
    });
  
    describe('with both items and urls', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
            urls={['#', '#']}
          />
        );
      })
  
      it('should render links if given both items and urls', () => {
        const itemList = wrapper
          .childAt(0)
          .childAt(1)
          .children();
  
        itemList.forEach(node => {
          expect(node.childAt(0).type()).toBe('a');
        })
      })
  
      it('should render error message if items and urls do not match', () => {
        const wrongWrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
            urls={['#']}
          />
        );
        expect(wrongWrapper.text()).toInclude('don\'t match');
      })
  
    });
  
  });
  
new_contents: import React from 'react';
  import { shallow } from 'enzyme';
  import expect from 'expect';
  import expectJSX from 'expect-jsx';
  import { createRenderer } from 'react-addons-test-utils';
  import MDTopNav from 'src/MDTopNav';
  
  expect.extend(expectJSX);
  
  describe('MDTopNav', () => {
  
    describe('default case', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(<MDTopNav />);
      });
  
      it('should have no default props', () => {
        expect(Object.keys(wrapper.props()).length).toEqual(3);
      });
  
      it('should have a default logo', () => {
        expect(wrapper.find('img').length).toEqual(1);
      });
  
      it('should not have items', () => {
          wrapper
            .childAt(0)
            .childAt(1)
            .children()
            .forEach(node => expect(node.type()).toBe(null));
      });
  
    });
  
    describe('with items, without urls', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
          />
        );
      });
  
      it('should render divs if given only items', () => {
        const itemList = wrapper
          .childAt(0)
          .childAt(1)
          .children();
  
        expect(itemList.length).toBe(2);
  
        itemList
          .children()
          .forEach(node => expect(node.type()).toBe('div'));
        itemList
          .children()
          .forEach(node => expect(node.type().toBe(null)));
      });
  
    });
  
    describe('with both items and urls', () => {
  
      let wrapper;
  
      before(() => {
        wrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
            urls={['#', '#']}
          />
        );
      })
  
      it('should render links if given both items and urls', () => {
        const itemList = wrapper
          .childAt(0)
          .childAt(1)
          .children();
  
        itemList.forEach(node => {
          expect(node.childAt(0).type()).toBe('a');
        })
      })
  
      it('should render error message if items and urls do not match', () => {
        const wrongWrapper = shallow(
          <MDTopNav
            items={['test1', 'test2']}
            urls={['#']}
          />
        );
        expect(wrongWrapper.text()).toInclude('don\'t match');
      })
  
    });
  
  });
  
subject: fix bug in test