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

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/**
* @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, range} from 'rxjs';
import {count} from 'rxjs/operators';
describe('Observable.count', () => {
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('count func callback should run in the correct zone', () => {
observable1 = constructorZone1.run(() => {
return range(1, 3).pipe(count((i: number) => {
expect(Zone.current.name).toEqual(constructorZone1.name);
return i % 2 === 0;
}));
});
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([1, 'completed']);
});
});