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

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/**
* @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 {interval, merge, Observable} from 'rxjs';
import {map, take} from 'rxjs/operators';
import {asyncTest} from '../test-util';
describe('Observable.merge', () => {
let log: any[];
beforeEach(() => {
log = [];
});
it('merge func callback should run in the correct zone', asyncTest((done: any) => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const constructorZone2: Zone = Zone.current.fork({name: 'Constructor Zone2'});
const constructorZone3: Zone = Zone.current.fork({name: 'Constructor Zone3'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
const observable1: any = constructorZone1.run(() => {
return interval(8).pipe(map(v => 'observable1' + v), take(1));
});
const observable2: any = constructorZone2.run(() => {
return interval(10).pipe(map(v => 'observable2' + v), take(1));
});
const observable3: any = constructorZone3.run(() => {
return merge(observable1, observable2);
});
subscriptionZone.run(() => {
const subscriber = observable3.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(['observable10', 'observable20', 'completed']);
done();
});
});
}, Zone.root));
});