angular-cn/packages/zone.js/test/rxjs/rxjs.Observable.distinct.sp...

98 lines
3.3 KiB
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 {distinct, distinctUntilChanged, distinctUntilKeyChanged} from 'rxjs/operators';
describe('Observable.distinct', () => {
let log: any[];
let observable1: Observable<any>;
beforeEach(() => {
log = [];
});
it('distinct func callback should run in the correct zone', () => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
const error = new Error('test');
observable1 = constructorZone1.run(() => {
return of(1, 1, 2, 2, 2, 1, 2, 3, 4, 3, 2, 1).pipe(distinct());
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
log.push(result);
expect(Zone.current.name).toEqual(subscriptionZone.name);
},
(err: any) => {
fail('should not call error');
},
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
});
});
expect(log).toEqual([1, 2, 3, 4, 'completed']);
});
it('distinctUntilChanged func callback should run in the correct zone', () => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
const error = new Error('test');
observable1 = constructorZone1.run(() => {
return of(1, 1, 2, 2, 2, 1, 1, 2, 3, 3, 4).pipe(distinctUntilChanged());
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
log.push(result);
expect(Zone.current.name).toEqual(subscriptionZone.name);
},
(err: any) => {
fail('should not call error');
},
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
});
});
expect(log).toEqual([1, 2, 1, 2, 3, 4, 'completed']);
});
it('distinctUntilKeyChanged func callback should run in the correct zone', () => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
const error = new Error('test');
observable1 = constructorZone1.run(() => {
return of({age: 4, name: 'Foo'}, {age: 7, name: 'Bar'}, {age: 5, name: 'Foo'},
{age: 6, name: 'Foo'})
.pipe(distinctUntilKeyChanged('name'));
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
log.push(result);
expect(Zone.current.name).toEqual(subscriptionZone.name);
},
(err: any) => {
fail('should not call error');
},
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
});
});
expect(log).toEqual(
[{age: 4, name: 'Foo'}, {age: 7, name: 'Bar'}, {age: 5, name: 'Foo'}, 'completed']);
});
});