88 lines
3.2 KiB
TypeScript
88 lines
3.2 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {Observable, of } from 'rxjs';
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import {distinct, distinctUntilChanged, distinctUntilKeyChanged} from 'rxjs/operators';
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describe('Observable.distinct', () => {
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let log: any[];
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let observable1: Observable<any>;
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beforeEach(() => { log = []; });
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it('distinct func callback should run in the correct zone', () => {
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const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
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const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
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const error = new Error('test');
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observable1 = constructorZone1.run(
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() => { return of (1, 1, 2, 2, 2, 1, 2, 3, 4, 3, 2, 1).pipe(distinct()); });
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subscriptionZone.run(() => {
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observable1.subscribe(
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(result: any) => {
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log.push(result);
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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},
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(err: any) => { fail('should not call error'); },
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() => {
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log.push('completed');
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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});
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});
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expect(log).toEqual([1, 2, 3, 4, 'completed']);
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});
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it('distinctUntilChanged func callback should run in the correct zone', () => {
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const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
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const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
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const error = new Error('test');
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observable1 = constructorZone1.run(
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() => { return of (1, 1, 2, 2, 2, 1, 1, 2, 3, 3, 4).pipe(distinctUntilChanged()); });
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subscriptionZone.run(() => {
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observable1.subscribe(
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(result: any) => {
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log.push(result);
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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},
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(err: any) => { fail('should not call error'); },
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() => {
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log.push('completed');
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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});
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});
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expect(log).toEqual([1, 2, 1, 2, 3, 4, 'completed']);
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});
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it('distinctUntilKeyChanged func callback should run in the correct zone', () => {
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const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
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const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
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const error = new Error('test');
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observable1 = constructorZone1.run(() => {
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return of ({age: 4, name: 'Foo'}, {age: 7, name: 'Bar'}, {age: 5, name: 'Foo'},
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{age: 6, name: 'Foo'})
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.pipe(distinctUntilKeyChanged('name'));
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});
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subscriptionZone.run(() => {
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observable1.subscribe(
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(result: any) => {
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log.push(result);
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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},
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(err: any) => { fail('should not call error'); },
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() => {
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log.push('completed');
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expect(Zone.current.name).toEqual(subscriptionZone.name);
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});
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});
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expect(log).toEqual(
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[{age: 4, name: 'Foo'}, {age: 7, name: 'Bar'}, {age: 5, name: 'Foo'}, 'completed']);
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});
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});
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