frontend/src/containers/app/__tests__/NotFoundContainer.test.js
import React from 'react';
import expect from 'expect';
import { shallow } from 'enzyme';
import NotFoundContainer from '../NotFoundContainer';
describe('<NotFoundContainer />', () => {
it('render component', () => {
const wrapper = shallow(<NotFoundContainer />);
expect(wrapper.find('h2').html()).toBe('<h2>404</h2>');
});
});