combining jest with snapshot code example

Example 1: snapshot testing

import React from 'react';
import Link from '../Link.react';
import renderer from 'react-test-renderer';

it('renders correctly', () => {
  const tree = renderer
    .create(Facebook)
    .toJSON();
  expect(tree).toMatchSnapshot();
});

Example 2: snapshot testing

exports[`renders correctly 1`] = `

  Facebook

`;