it('should verify UpgradeAdapter example', async(() => {

         // This is wrapping (upgrading) an AngularJS component to be used in an Angular
         // component
         @Directive({selector: 'ng1'})
         class Ng1Component extends UpgradeComponent {
           @Input() title: string;

           constructor(elementRef: ElementRef, injector: Injector) {
             super('ng1', elementRef, injector);
           }
         }

         // This is an Angular component that will be downgraded
         @Component({
           selector: 'ng2',
           template: 'ng2[<ng1 [title]="nameProp">transclude</ng1>](<ng-content></ng-content>)'
         })
         class Ng2Component {
           @Input('name') nameProp: string;
         }

         // This module represents the Angular pieces of the application
         @NgModule({
           declarations: [Ng1Component, Ng2Component],
           entryComponents: [Ng2Component],
           imports: [BrowserModule, UpgradeModule]
         })
         class Ng2Module {
           ngDoBootstrap() { /* this is a placeholder to stop the bootstrapper from complaining */
           }
         }

         // This module represents the AngularJS pieces of the application
         const ng1Module =
             angular
                 .module('myExample', [])
                 // This is an AngularJS component that will be upgraded
                 .directive(
                     'ng1',
                     () => {
                       return {
                         scope: {title: '='},
                         transclude: true,
                         template: 'ng1[Hello {{title}}!](<span ng-transclude></span>)'
                       };
                     })
                 // This is wrapping (downgrading) an Angular component to be used in AngularJS
                 .directive('ng2', downgradeComponent({component: Ng2Component}));

         // This is the (AngularJS) application bootstrap element
         // Notice that it is actually a downgraded Angular component
         const element = html('<ng2 name="World">project</ng2>');

         // Let's use a helper function to make this simpler
         bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then(upgrade => {
           expect(multiTrim(element.textContent))
               .toBe('ng2[ng1[Hello World!](transclude)](project)');
         });
       }));

    it('should downgrade ng2 service to ng1', async(() => {
         // Tokens used in ng2 to identify services
         const Ng2Service = new InjectionToken('ng2-service');

         // Sample ng1 NgModule for tests
         @NgModule({
           imports: [BrowserModule, UpgradeModule],
           providers: [
             {provide: Ng2Service, useValue: 'ng2 service value'},
           ]
         })
         class Ng2Module {
           ngDoBootstrap() {}
         }

         // create the ng1 module that will import an ng2 service
         const ng1Module =
             angular.module('ng1Module', []).factory('ng2Service', downgradeInjectable(Ng2Service));

         bootstrap(platformBrowserDynamic(), Ng2Module, html('<div>'), ng1Module)
             .then((upgrade) => {
               const ng1Injector = upgrade.$injector;
               expect(ng1Injector.get('ng2Service')).toBe('ng2 service value');
             });
       }));

       async(() => {
         let runBlockTriggered = false;

         const ng1Module = angular.module('ng1Module', []).run([
           INJECTOR_KEY,
           function(injector: Injector) {
             runBlockTriggered = true;
             expect(injector.get($INJECTOR)).toBeDefined();
           }
         ]);

         @NgModule({imports: [BrowserModule, UpgradeModule]})
         class Ng2Module {
           ngDoBootstrap() {}
         }

         bootstrap(platformBrowserDynamic(), Ng2Module, html('<div>'), ng1Module).then(() => {
           expect(runBlockTriggered).toBeTruthy();
         });
       }));