fix(upgrade): correctly run change detection when propagateDigest is false

packages/upgrade/src/common/downgrade_component_adapter.ts

@@ -151,7 +151,7 @@ export class DowngradeComponentAdapter {
     }
 
     // Attach the view so that it will be dirty-checked.
-    if (needsNgZone) {
+    if (needsNgZone || !propagateDigest) {
       const appRef = this.parentInjector.get<ApplicationRef>(ApplicationRef);
       appRef.attachView(this.componentRef.hostView);
     }

packages/upgrade/test/static/integration/downgrade_component_spec.ts

@@ -7,7 +7,7 @@
  */
 
 import {ChangeDetectorRef, Compiler, Component, ComponentFactoryResolver, EventEmitter, Injector, Input, NgModule, NgModuleRef, OnChanges, OnDestroy, SimpleChanges, destroyPlatform} from '@angular/core';
-import {async} from '@angular/core/testing';
+import {async, fakeAsync, tick} from '@angular/core/testing';
 import {BrowserModule} from '@angular/platform-browser';
 import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
 import * as angular from '@angular/upgrade/src/common/angular1';
@@ -274,6 +274,42 @@ export function main() {
          });
        }));
 
+    it('should still run normal Angular change-detection regardless of `propagateDigest`',
+       fakeAsync(() => {
+         let ng2Component: Ng2Component;
+
+         @Component({selector: 'ng2', template: '{{ value }}'})
+         class Ng2Component {
+           value = 'foo';
+           constructor() { setTimeout(() => this.value = 'bar', 1000); }
+         }
+
+         @NgModule({
+           imports: [BrowserModule, UpgradeModule],
+           declarations: [Ng2Component],
+           entryComponents: [Ng2Component]
+         })
+         class Ng2Module {
+           ngDoBootstrap() {}
+         }
+
+         const ng1Module =
+             angular.module('ng1', [])
+                 .directive(
+                     'ng2A', downgradeComponent({component: Ng2Component, propagateDigest: true}))
+                 .directive(
+                     'ng2B', downgradeComponent({component: Ng2Component, propagateDigest: false}));
+
+         const element = html('<ng2-a></ng2-a> | <ng2-b></ng2-b>');
+
+         bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then(upgrade => {
+           expect(element.textContent).toBe('foo | foo');
+
+           tick(1000);
+           expect(element.textContent).toBe('bar | bar');
+         });
+       }));
+
     it('should initialize inputs in time for `ngOnChanges`', async(() => {
          @Component({
            selector: 'ng2',