angular__angular/packages/zone.js/test/rxjs/rxjs.asap.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 {asapScheduler, of} from 'rxjs';
import {map, observeOn} from 'rxjs/operators';

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

describe('Scheduler.asap', () => {
  let log: any[];
  let errorCallback: Function;
  const constructorZone: Zone = Zone.root.fork({name: 'Constructor Zone'});

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

  it(
    'scheduler asap should run in correct zone',
    asyncTest((done: any) => {
      let observable: any;
      constructorZone.run(() => {
        observable = of(1, 2, 3).pipe(observeOn(asapScheduler));
      });

      const zone = Zone.current.fork({name: 'subscribeZone'});

      zone.run(() => {
        observable
          .pipe(
            map((value: number) => {
              return value;
            }),
          )
          .subscribe(
            (value: number) => {
              expect(Zone.current.name).toEqual(zone.name);
              if (value === 3) {
                setTimeout(done);
              }
            },
            (err: any) => {
              fail('should not be here');
            },
          );
      });
    }, Zone.root),
  );

  it(
    'scheduler asap error should run in correct zone',
    asyncTest((done: any) => {
      let observable: any;
      constructorZone.run(() => {
        observable = of(1, 2, 3).pipe(observeOn(asapScheduler));
      });

      Zone.root.run(() => {
        observable
          .pipe(
            map((value: number) => {
              if (value === 3) {
                throw new Error('oops');
              }
              return value;
            }),
          )
          .subscribe(
            (value: number) => {},
            (err: any) => {
              expect(err.message).toEqual('oops');
              expect(Zone.current.name).toEqual('<root>');
              done();
            },
          );
      });
    }, Zone.root),
  );
});