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

});
  });
  describe('tag sanitization', function() {
    it('should throw when an invalid tag name is used', () => {
      var ReactTestUtils = require('ReactTestUtils');
      var hackzor = React.createElement('script tag');
      expect(
        () => ReactTestUtils.renderIntoDocument(hackzor)
      ).toThrow(
        'Invalid tag: script tag'
      );
    });
    it('should throw when an attack vector is used', () => {
      var ReactTestUtils = require('ReactTestUtils');
      var hackzor = React.createElement('div><img /><div');
      expect(
        () => ReactTestUtils.renderIntoDocument(hackzor)
      ).toThrow(
        'Invalid tag: div><img /><div'
      );
    });
  });
  describe('nesting validation', function() {
    var ReactTestUtils;
    beforeEach(function() {
      ReactTestUtils = require('ReactTestUtils');
    });
    it('warns on invalid nesting', () => {
      spyOn(console, 'error');
      ReactTestUtils.renderIntoDocument(<div><tr /><tr /></div>);