Observed this on react@16.0.0-beta.5

```js
import React from 'react';
import { renderToString } from 'react-dom/server';

const B = () => 'b';

console.log(renderToString(<div>{'a'}<B />{'c'}</div>));
```

This renders as `<div data-reactroot="">a<!-- -->bc</div>`. If you try to hydrate this you'll get the error: Text content did not match. Server: "bc" Client: "b".
});
        it('should not blow away user-entered text on successful reconnect to an uncontrolled checkbox', () =>
          testUserInteractionBeforeClientRender(
            <input type="checkbox" defaultChecked={true} />,
            true,
            false,
            'checked',
          ));
        it('should not blow away user-entered text on successful reconnect to a controlled checkbox', async () => {
          let changeCount = 0;
          await testUserInteractionBeforeClientRender(
            <ControlledCheckbox onChange={() => changeCount++} />,
            true,
            false,
            'checked',
          );
          expect(changeCount).toBe(0);
        });
        
        
        xit(
          'should not blow away user-entered text on successful reconnect to an uncontrolled textarea',
          () =>
            testUserInteractionBeforeClientRender(
              <textarea defaultValue="Hello" />,
            ),
        );
        
        
        xit(