return (
        <div hidden={true}>
          <span prop={1} />
        </div>
      );
    }
    ReactNoop.render(<Foo />);
    ReactNoop.flush();
    expect(ReactNoop.getChildren()).toEqual([div(span(1))]);
  });
  xit('can defer side-effects and resume them later on', () => {
    class Bar extends React.Component {