feat(core): support for bootstrap with custom zone (#17672)

PR Close #17672

packages/core/test/application_ref_spec.ts

@@ -16,8 +16,8 @@ import {DOCUMENT} from '@angular/platform-browser/src/dom/dom_tokens';
 import {dispatchEvent} from '@angular/platform-browser/testing/src/browser_util';
 import {expect} from '@angular/platform-browser/testing/src/matchers';
 import {ServerModule} from '@angular/platform-server';
-
-import {ComponentFixture, ComponentFixtureNoNgZone, TestBed, async, inject, withModule} from '../testing';
+import {NoopNgZone} from '../src/zone/ng_zone';
+import {ComponentFixtureNoNgZone, TestBed, async, inject, withModule} from '../testing';
 
 @Component({selector: 'bootstrap-app', template: 'hello'})
 class SomeComponent {
@@ -287,6 +287,15 @@ export function main() {
            defaultPlatform.bootstrapModule(createModule({bootstrap: [SomeComponent]}))
                .then(module => expect((<any>defaultPlatform)._modules).toContain(module));
          }));
+
+      it('should bootstrap with NoopNgZone', async(() => {
+           defaultPlatform
+               .bootstrapModule(createModule({bootstrap: [SomeComponent]}), {ngZone: 'noop'})
+               .then((module) => {
+                 const ngZone = module.injector.get(NgZone);
+                 expect(ngZone instanceof NoopNgZone).toBe(true);
+               });
+         }));
     });
 
     describe('bootstrapModuleFactory', () => {

packages/core/test/zone/ng_zone_spec.ts

@@ -6,11 +6,12 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {NgZone} from '@angular/core/src/zone/ng_zone';
+import {EventEmitter, NgZone} from '@angular/core';
 import {async, fakeAsync, flushMicrotasks} from '@angular/core/testing';
 import {AsyncTestCompleter, Log, beforeEach, describe, expect, inject, it, xit} from '@angular/core/testing/src/testing_internal';
 import {browserDetection} from '@angular/platform-browser/testing/src/browser_util';
 import {scheduleMicroTask} from '../../src/util';
+import {NoopNgZone} from '../../src/zone/ng_zone';
 
 const needsLongerTimers = browserDetection.isSlow || browserDetection.isEdge;
 const resultTimer = 1000;
@@ -170,6 +171,25 @@ export function main() {
          }), testTimeout);
     });
   });
+
+  describe('NoopNgZone', () => {
+    const ngZone = new NoopNgZone();
+
+    it('should run', () => {
+      let runs = false;
+      ngZone.run(() => {
+        ngZone.runGuarded(() => { ngZone.runOutsideAngular(() => { runs = true; }); });
+      });
+      expect(runs).toBe(true);
+    });
+
+    it('should have EventEmitter instances', () => {
+      expect(ngZone.onError instanceof EventEmitter).toBe(true);
+      expect(ngZone.onStable instanceof EventEmitter).toBe(true);
+      expect(ngZone.onUnstable instanceof EventEmitter).toBe(true);
+      expect(ngZone.onMicrotaskEmpty instanceof EventEmitter).toBe(true);
+    });
+  });
 }
 
 function commonTests() {