React 0.14.7: `<option value="">empty</option>` emits empty string on change
http://jsbin.com/pisita/10/edit?html,js,console,output
React 15.0.0-rc.1`<option value="">empty</option>` emits string with value "empty" on change
http://jsbin.com/bemaze/12/edit?html,js,console,output
This is because React 15.0.0-rc.1 cuts off `value=""` from option tag

);
    });
    it('should properly escape text content and attributes values', function() {
      expect(
        ReactDOMServer.renderToStaticMarkup(
          React.DOM.div({
            title: '\'"<>&',
            style: {
              textAlign: '\'"<>&',
            },
          }, '\'"<>&')
        )
      ).toBe(
        '<div title="&#x27;&quot;&lt;&gt;&amp;" style="text-align:&#x27;&quot;&lt;&gt;&amp;;">' +
          '&#x27;&quot;&lt;&gt;&amp;' +
        '</div>'
      );
    });
  });
  describe('unmountComponent', function() {
    it('should clean up listeners', function() {
      var EventPluginHub = require('EventPluginHub');
      var ReactDOMComponentTree = require('ReactDOMComponentTree');
      var container = document.createElement('div');
      document.body.appendChild(container);
      var callback = function() {};
      var instance = <div onClick={callback} />;
      instance = ReactDOM.render(instance, container);
      var rootNode = ReactDOM.findDOMNode(instance);
      var inst = ReactDOMComponentTree.getInstanceFromNode(rootNode);