build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/test/browser/requestAnimationFrame.spec.ts

@@ -0,0 +1,52 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {ifEnvSupports} from '../test-util';
+declare const window: any;
+
+describe('requestAnimationFrame', function() {
+  const functions =
+      ['requestAnimationFrame', 'webkitRequestAnimationFrame', 'mozRequestAnimationFrame'];
+
+  functions.forEach(function(fnName) {
+    describe(fnName, ifEnvSupports(fnName, function() {
+               const originalTimeout: number = (<any>jasmine).DEFAULT_TIMEOUT_INTERVAL;
+               beforeEach(() => { (<any>jasmine).DEFAULT_TIMEOUT_INTERVAL = 10000; });
+
+               afterEach(() => { (<any>jasmine).DEFAULT_TIMEOUT_INTERVAL = originalTimeout; });
+               const rAF = window[fnName];
+
+               it('should be tolerant of invalid arguments', function() {
+                 // rAF throws an error on invalid arguments, so expect that.
+                 expect(function() { rAF(null); }).toThrow();
+               });
+
+               it('should bind to same zone when called recursively', function(done) {
+                 Zone.current.fork({name: 'TestZone'}).run(() => {
+                   let frames = 0;
+                   let previousTimeStamp = 0;
+
+                   function frameCallback(timestamp: number) {
+                     expect(timestamp).toMatch(/^[\d.]+$/);
+                     // expect previous <= current
+                     expect(previousTimeStamp).not.toBeGreaterThan(timestamp);
+                     previousTimeStamp = timestamp;
+
+                     if (frames++ > 15) {
+                       (<any>jasmine).DEFAULT_TIMEOUT_INTERVAL = originalTimeout;
+                       return done();
+                     }
+                     rAF(frameCallback);
+                   }
+
+                   rAF(frameCallback);
+                 });
+               });
+             }));
+  });
+});