Update the Angular/DI tests to latest from github.

third_party/pkg/angular/test/directive/ng_a_spec.dart

 library ng_a_spec;
 
 import '../_specs.dart';
 import 'dart:html' as dom;
 
 main() {
   describe('ADirective', () {
     TestBed _;
 
     beforeEach(inject((TestBed tb) => _ = tb));
 
     it('should bind click listener when href zero length string', inject((Scope scope) {
       _.compile('<a href="" ng-click="abc = true; event = \$event"></a>');
       _.triggerEvent(_.rootElement, 'click', 'MouseEvent');
-      expect(_.rootScope['abc']).toEqual(true);
-      expect(_.rootScope['event'] is dom.UIEvent).toEqual(true);
+      expect(_.rootScope.context['abc']).toEqual(true);
+      expect(_.rootScope.context['event'] is dom.UIEvent).toEqual(true);
     }));
 
     it('should bind click listener when href empty', inject((Scope scope) {
       _.compile('<a href ng-click="abc = true; event = \$event"></a>');
       _.triggerEvent(_.rootElement, 'click', 'MouseEvent');
-      expect(_.rootScope['abc']).toEqual(true);
-      expect(_.rootScope['event'] is dom.UIEvent).toEqual(true);
+      expect(_.rootScope.context['abc']).toEqual(true);
+      expect(_.rootScope.context['event'] is dom.UIEvent).toEqual(true);
     }));
 
     it('should not bind click listener to non empty href', inject((Scope scope) {
+      window.location.href = '#something';
       _.compile('<a href="#"></a>');
       _.triggerEvent(_.rootElement, 'click', 'MouseEvent');
       expect(window.location.href.endsWith("#")).toEqual(true);
     }));
 
     it('should not cancel click with non-empty interpolated href', inject((Scope scope) {
       _.compile('<a href="{{url}}" ng-click="abc = true; event = \$event"></a>');
       _.triggerEvent(_.rootElement, 'click', 'MouseEvent');
-      expect(_.rootScope['abc']).toEqual(true);
-      expect(_.rootScope['event'] is dom.UIEvent).toEqual(true);
+      expect(_.rootScope.context['abc']).toEqual(true);
+      expect(_.rootScope.context['event'] is dom.UIEvent).toEqual(true);
       window.location.href = '#';
-      _.rootScope['url'] = '#url';
-      _.rootScope.$digest();
+      _.rootScope.context['url'] = '#url';
+      _.rootScope.apply();
       _.triggerEvent(_.rootElement, 'click', 'MouseEvent');
       expect(window.location.href.endsWith("#url")).toEqual(true);
     }));
   });
 }