anchor.diff:          // check selected class
           expect(item.classes.contains('iron-selected'), isTrue);
         });
  -    }, skip: 'https://github.com/PolymerElements/iron-selector/issues/56');
  +    });
   
       test('update items', () {
         var done = new Completer();
  
positive.code:         });
        });
        return done.future;
      }, skip: 'https://github.com/PolymerElements/iron-selector/issues/56');
  
      test('set selected to something else', () {
        return wait(1).then((_) {
  
negative.code:         // check selected class
          expect(item.classes.contains('iron-selected'), isTrue);
        });
      });
    });
  }
  