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