attempt_to_test_loading_multiple_reacts

let React = require('react');
var ReactTestUtils = require('react-dom/test-utils');
class TextWithStringRef extends React.Component {
  render() {
    return (
      <span ref="foo">
        Hello world!
      </span>
    );
  }
}


describe('when loading two copies of React', () => {
  describe('when different React version is used with string ref', () => {
    it('has two different copies of React', () => {
      jest.resetModules();
      let ReactCopy1 = require('react');
      expect(ReactCopy1 !== React).toBe(true);
    });

    it('throws the "Refs must have owner" warning', () => {
      jest.resetModules();
      let React = require('react');
      var testRefsComponent = ReactTestUtils.renderIntoDocument(
        <TextWithStringRef />,
      );
    });
  });
});