anchor.diff:  
     group('about dialog', () {
       test('open and close the dialog via x button', () {
  -      return sparkTester.openAndCloseWithX(menuAccess.gitCloneMenu);
  +      return sparkTester.openAndCloseWithX(menuAccess.aboutMenu);
       });
     });
   }
  
positive.code: 
    DialogTester(this.dialogAccess);
  
    bool get functionallyOpened => dialogAccess.opened;
  
    bool get visuallyOpened {
  //    SparkModal modalElement = dialogAccess.modalElement;
  //    CssStyleDeclaration style = modalElement.getComputedStyle();
  //    String opacity = style.opacity;
  //    String display = style.display;
  //    String visibility = style.visibility;
  
  //    return int.parse(opacity) > 0 && display != "none" && visibility == "visible";
      return dialogAccess.fullyVisible;
    }
  
  
negative.code:   SparkMenuAccess menuAccess = new SparkMenuAccess();
  
    group('first run', () {
      // TODO(ericarnold): Disabled for local testing
  //    test('ensure about dialog open', () {
  //      ModalUITester modalTester = new ModalUITester("aboutDialog");
  //      expect(modalTester.functionallyOpened, true);
  