anchor.diff:            ..bind(LogElementComponent)
             ..bind(SayHelloFormatter)
             ..bind(OneTimeDecorator)
  +          ..bind(OnceInside)
             ..bind(OuterShadowless)
             ..bind(InnerShadowy);
         });
  
positive.code:   selector: 'inner-shadowy',
    template: '<content></content>')
  class InnerShadowy {}
  
negative.code:         microLeap();
          _.rootScope.apply();
          expect(element).toHaveText('inside ');
        }));
  
        it('should not pass null to a inner directives', async((Logger logger) {
          _.compile('<div>'
                      '<once-inside ng-repeat="x in nn" v="b"></once-inside>'
                    '</div>');
  
          _.rootScope.context['nn'] = [1];
          _.rootScope.apply();
          microLeap();
  
          _.rootScope.context['nn'].add(2);
          _.rootScope.apply();
          microLeap();
  
          expect(logger.contains(null)).toBeFalsy();
        }));
  
        it('should create a component with I/O', async(() {
  