angular-cn/packages/zone.js/test/rxjs/rxjs.Observable.default.spe...

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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 {Observable, of} from 'rxjs';
import {defaultIfEmpty} from 'rxjs/operators';
import {asyncTest} from '../test-util';
describe('Observable.defaultIfEmpty', () => {
let log: any[];
let observable1: Observable<any>;
beforeEach(() => {
log = [];
});
it('defaultIfEmpty func callback should run in the correct zone', asyncTest((done: any) => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
observable1 = constructorZone1.run(() => {
return of().pipe(defaultIfEmpty('empty' as any));
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
log.push(result);
expect(Zone.current.name).toEqual(subscriptionZone.name);
},
() => {
fail('should not call error');
},
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
expect(log).toEqual(['empty', 'completed']);
done();
});
});
}, Zone.root));
});