angular-docs-cn/packages/zone.js/test/rxjs/rxjs.fromPromise.spec.ts

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TypeScript

/**
* @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 {from} from 'rxjs';
import {asyncTest} from '../test-util';
describe('Observable.fromPromise', () => {
let log: any[];
let observable1: any;
beforeEach(() => { log = []; });
it('fromPromise func callback should run in the correct zone', asyncTest((done: any) => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const promiseZone1: Zone = Zone.current.fork({name: 'Promise Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
let res: any;
let promise: any =
promiseZone1.run(() => { return new Promise((resolve, reject) => { res = resolve; }); });
observable1 = constructorZone1.run(() => { return from(promise); });
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
expect(log).toEqual([1]);
done();
},
() => { fail('should not call error'); }, () => {});
});
res(1);
expect(log).toEqual([]);
}, Zone.root));
});