angular-cn/packages/zone.js/test/rxjs/rxjs.from.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 {from, Observable} from 'rxjs';
import {asyncTest} from '../test-util';
describe('Observable.from', () => {
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('from array should run in the correct zone', () => {
observable1 = constructorZone1.run(() => {
return from([1, 2]);
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => {
fail('should not call error');
},
() => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push('completed');
});
});
expect(log).toEqual([1, 2, 'completed']);
});
it('from array like object should run in the correct zone', () => {
observable1 = constructorZone1.run(() => {
return from('foo');
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
() => {
fail('should not call error');
},
() => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push('completed');
});
});
expect(log).toEqual(['f', 'o', 'o', 'completed']);
});
it('from promise object 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(() => {
return from(new Promise((resolve, reject) => {
resolve(1);
}));
});
subscriptionZone.run(() => {
observable1.subscribe(
(result: any) => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push(result);
},
(error: any) => {
fail('should not call error' + error);
},
() => {
expect(Zone.current.name).toEqual(subscriptionZone.name);
log.push('completed');
expect(log).toEqual([1, 'completed']);
done();
});
});
expect(log).toEqual([]);
}, Zone.root));
});