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

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TypeScript

/**
* @license
* Copyright Google LLC 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 {defer, Observable} from 'rxjs';
describe('Observable.defer', () => {
let log: any[];
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
let observable1: Observable<any>;
beforeEach(() => {
log = [];
});
it('defer func callback should run in the correct zone', () => {
observable1 = constructorZone1.run(() => {
return defer(() => {
return new Observable<number>(subscribe => {
log.push('setup');
expect(Zone.current.name).toEqual(constructorZone1.name);
subscribe.next(1);
subscribe.complete();
return () => {
expect(Zone.current.name).toEqual(constructorZone1.name);
log.push('cleanup');
};
});
});
});
subscriptionZone.run(() => {
observable1.subscribe((result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
});
});
expect(log).toEqual(['setup', 1, 'cleanup']);
});
});