angular-docs-cn/packages/zone.js/test/rxjs/rxjs.Observable.combine.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, combineLatest, of } from 'rxjs';
import {combineAll, map} from 'rxjs/operators';
import {asyncTest} from '../test-util';
describe('Observable.combine', () => {
let log: any[];
let observable1: Observable<any>;
beforeEach(() => { log = []; });
it('combineAll 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(() => {
const source = of (1, 2);
const highOrder = source.pipe(map((src: any) => {
expect(Zone.current.name).toEqual(constructorZone1.name);
return of (src);
}));
return highOrder.pipe(combineAll());
});
subscriptionZone.run(() => {
const subscriber = observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => { fail('should not call error'); },
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
expect(log).toEqual([[1, 2], 'completed']);
done();
});
});
}, Zone.root));
it('combineAll func callback should run in the correct zone with project function',
asyncTest((done: any) => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
observable1 = constructorZone1.run(() => {
const source = of (1, 2, 3);
const highOrder = source.pipe(map((src: any) => {
expect(Zone.current.name).toEqual(constructorZone1.name);
return of (src);
}));
return highOrder.pipe(combineAll((x: any, y: any) => {
expect(Zone.current.name).toEqual(constructorZone1.name);
return {x: x, y: y};
}));
});
subscriptionZone.run(() => {
const subscriber = observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => { fail('should not call error'); },
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
expect(log).toEqual([{x: 1, y: 2}, 'completed']);
done();
});
});
}, Zone.root));
it('combineLatest 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'});
observable1 = constructorZone1.run(() => {
const source = of (1, 2, 3);
const input = of (4, 5, 6);
return combineLatest(source, input);
});
subscriptionZone.run(() => {
const subscriber = observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => { fail('should not call error'); },
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
});
});
expect(log).toEqual([[3, 4], [3, 5], [3, 6], 'completed']);
});
it('combineLatest func callback should run in the correct zone with project function', () => {
const constructorZone1: Zone = Zone.current.fork({name: 'Constructor Zone1'});
const subscriptionZone: Zone = Zone.current.fork({name: 'Subscription Zone'});
observable1 = constructorZone1.run(() => {
const source = of (1, 2, 3);
const input = of (4, 5, 6);
return combineLatest(source, input, (x: number, y: number) => { return x + y; });
});
subscriptionZone.run(() => {
const subscriber = observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => { fail('should not call error'); },
() => {
log.push('completed');
expect(Zone.current.name).toEqual(subscriptionZone.name);
});
});
expect(log).toEqual([7, 8, 9, 'completed']);
});
});