Why aren't either of these tests passing?

auth.effects.spec.ts

import { Router } from  '@angular/router';
import { TestBed } from '@angular/core/testing';

import { EffectsModule } from '@ngrx/effects';
import { provideMockActions } from '@ngrx/effects/testing';

import { Observable } from 'rxjs/Observable';
import { ReplaySubject } from 'rxjs/ReplaySubject';

import { AuthEffects } from './auth.effects';
import * as fromAuth from '../actions/auth';

import { AuthService } from '../services/auth.service';

describe('Auth Effects', () => {
  let effects: AuthEffects;
  let actions: ReplaySubject<fromAuth.Actions>;

  // Stub Auth Service
  const username = 'SomeUserName';
  class StubAuthService extends AuthService {
    checkAuth() { return Observable.from([username]); }
  }

  // Stub Router Service
  class StubRouter {
    navigateByUrl(url: string) {
      return url;
    }
  }

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        AuthEffects,
        provideMockActions(() => actions),
        { provide: AuthService, useClass: StubAuthService },
        { provide: Router, useClass: StubRouter },
      ],
    });
    effects = TestBed.get(AuthEffects);
  });

  it('Should be created', () => {
    expect(effects).toBeTruthy();
  });

  it('should map CheckLogin to LoginSuccess if there are no errors', () => {

    actions = new ReplaySubject(1); // Caches results, plays back when subscribed to.
    actions.next(new fromAuth.CheckLogin());

    effects.checkLogin$.subscribe(result =>
      expect(result).toEqual(new fromAuth.LoginSuccess({ user: { name: username } })),
    );

  });
});