import expect from 'expect' import React from 'react' import {render, unmountComponentAtNode} from 'react-dom' import Component from 'src/' describe('Component', () => { let node beforeEach(() => { node = document.createElement('div') }) afterEach(() => { unmountComponentAtNode(node) }) it('displays a welcome message', () => { render(<Component/>, node, () => { expect(node.innerHTML).toContain('Welcome to React components') }) }) })