angular-docs-cn/packages/zone.js/test/rxjs/rxjs.Observable.buffer.spec.ts

/**
 * @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 {empty, interval, Observable, of} from 'rxjs';
import {buffer, bufferCount, bufferTime, bufferToggle, bufferWhen} from 'rxjs/operators';

import {asyncTest} from '../test-util';

xdescribe('Observable.buffer', () => {
  let log: any[];
  let observable1: Observable<any>;

  beforeEach(() => {
    log = [];
  });

  it('buffer 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 = interval(350);
         const iv = interval(100);
         return iv.pipe(buffer(source));
       });

       subscriptionZone.run(() => {
         const subscriber = observable1.subscribe(
             (result: any) => {
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               log.push(result);
               if (result[0] >= 3) {
                 subscriber.unsubscribe();
               }
             },
             () => {
               fail('should not call error');
             },
             () => {
               log.push('completed');
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               expect(log).toEqual([[0, 1, 2], [3, 4, 5], 'completed']);
               done();
             });
       });

       expect(log).toEqual([]);
     }, Zone.root));

  it('bufferCount 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 iv = interval(100);
         return iv.pipe(bufferCount(3));
       });

       subscriptionZone.run(() => {
         const subscriber = observable1.subscribe(
             (result: any) => {
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               log.push(result);
               if (result[0] >= 3) {
                 subscriber.unsubscribe();
               }
             },
             () => {
               fail('should not call error');
             },
             () => {
               log.push('completed');
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               expect(log).toEqual([[0, 1, 2], [3, 4, 5], 'completed']);
               done();
             });
       });

       expect(log).toEqual([]);
     }, Zone.root));

  it('bufferTime 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 iv = interval(100);
         return iv.pipe(bufferTime(350));
       });

       subscriptionZone.run(() => {
         const subscriber = observable1.subscribe(
             (result: any) => {
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               log.push(result);
               if (result[0] >= 3) {
                 subscriber.unsubscribe();
               }
             },
             () => {
               fail('should not call error');
             },
             () => {
               log.push('completed');
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               expect(log).toEqual([[0, 1, 2], [3, 4, 5], 'completed']);
               done();
             });
       });

       expect(log).toEqual([]);
     }, Zone.root));

  it('bufferToggle 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 = interval(10);
         const opening = interval(25);
         const closingSelector = (v: any) => {
           expect(Zone.current.name).toEqual(constructorZone1.name);
           return v % 2 === 0 ? of(v) : empty();
         };
         return source.pipe(bufferToggle(opening, closingSelector));
       });

       let i = 0;
       subscriptionZone.run(() => {
         const subscriber = observable1.subscribe(
             (result: any) => {
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               log.push(result);
               subscriber.unsubscribe();
             },
             () => {
               fail('should not call error');
             },
             () => {
               log.push('completed');
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               expect(log).toEqual([[], 'completed']);
               done();
             });
       });

       expect(log).toEqual([]);
     }, Zone.root));

  it('bufferWhen 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 = interval(100);
         return source.pipe(bufferWhen(() => {
           expect(Zone.current.name).toEqual(constructorZone1.name);
           return interval(220);
         }));
       });

       let i = 0;
       subscriptionZone.run(() => {
         const subscriber = observable1.subscribe(
             (result: any) => {
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               log.push(result);
               if (i++ >= 3) {
                 subscriber.unsubscribe();
               }
             },
             () => {
               fail('should not call error');
             },
             () => {
               log.push('completed');
               expect(Zone.current.name).toEqual(subscriptionZone.name);
               expect(log).toEqual([[0, 1], [2, 3], [4, 5], [6, 7], 'completed']);
               done();
             });
       });

       expect(log).toEqual([]);
     }, Zone.root));
});