How to use the angular2-notifications.SimpleNotificationsModule.forRoot function in angular2-notifications

// App 入口模块
@NgModule({
  bootstrap: [AppComponent],
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    RouterModule,
    FormsModule,
    ReactiveFormsModule,
    PagesModule,
    RoutingModule,
    HttpClientModule,
    LoadingBarHttpClientModule,
    SimpleNotificationsModule.forRoot(),
    SaBaseModule.forRoot(),
  ],
  providers: [
    AppState,
    GlobalState
  ]
})
export class AppModule {}

async(() => {
      TestBed.configureTestingModule({
        imports: [SimpleNotificationsModule.forRoot()],
        declarations: [MessageCenterComponent]
      }).compileComponents();
    })
  );

import { SimpleNotificationsModule } from 'angular2-notifications';

import { AppComponent } from './app.component';
import { TaskListComponent } from './tasklist.component';

@NgModule({
  declarations: [
    AppComponent,
    TaskListComponent
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    FormsModule,
    HttpModule,
    SimpleNotificationsModule.forRoot()
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        SimpleNotificationsModule.forRoot( {
          position: [
            'top',
            'right'
          ],
          timeOut: 10000,
          icons: {
            success: '<svg viewBox="0 0 24 24" height="24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M20.7 5.3c-0.4-0.4-1-0.4-1.4 0l-10.3 10.3-4.3-4.3c-0.4-0.4-1-0.4-1.4 0s-0.4 1 0 1.4l5 5c0.2 0.2 0.4 0.3 0.7 0.3s0.5-0.1 0.7-0.3l11-11c0.4-0.4 0.4-1 0-1.4z"></path></svg>',
            error: '<svg viewBox="0 0 24 24" height="24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M13.4 12l5.3-5.3c0.4-0.4 0.4-1 0-1.4s-1-0.4-1.4 0l-5.3 5.3-5.3-5.3c-0.4-0.4-1-0.4-1.4 0s-0.4 1 0 1.4l5.3 5.3-5.3 5.3c-0.4 0.4-0.4 1 0 1.4 0.2 0.2 0.4 0.3 0.7 0.3s0.5-0.1 0.7-0.3l5.3-5.3 5.3 5.3c0.2 0.2 0.5 0.3 0.7 0.3s0.5-0.1 0.7-0.3c0.4-0.4 0.4-1 0-1.4l-5.3-5.3z"></path></svg>',
            alert: '<svg viewBox="0 0 24 24" height="24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M12 1c-6.1 0-11 4.9-11 11s4.9 11 11 11 11-4.9 11-11-4.9-11-11-11zM12 21c-5 0-9-4-9-9s4-9 9-9c5 0 9 4 9 9s-4 9-9 9z"></path><path d="M12 7c-0.6 0-1 0.4-1 1v4c0 0.6 0.4 1 1 1s1-0.4 1-1v-4c0-0.6-0.4-1-1-1z"></path><path d="M11.3 15.3c-0.2 0.2-0.3 0.4-0.3 0.7s0.1 0.5 0.3 0.7c0.2 0.2 0.4 0.3 0.7 0.3s0.5-0.1 0.7-0.3c0.2-0.2 0.3-0.5 0.3-0.7s-0.1-0.5-0.3-0.7c-0.4-0.4-1-0.4-1.4 0z"></path></svg>',
            info: '<svg viewBox="0 0 24 24" height="24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M12 1c-6.1 0-11 4.9-11 11s4.9 11 11 11 11-4.9 11-11-4.9-11-11-11zM12 21c-5 0-9-4-9-9s4-9 9-9c5 0 9 4 9 9s-4 9-9 9z"></path><path d="M12 11c-0.6 0-1 0.4-1 1v4c0 0.6 0.4 1 1 1s1-0.4 1-1v-4c0-0.6-0.4-1-1-1z"></path><path d="M11.3 7.3c-0.2 0.2-0.3 0.4-0.3 0.7s0.1 0.5 0.3 0.7c0.2 0.2 0.4 0.3 0.7 0.3s0.5-0.1 0.7-0.3c0.2-0.2 0.3-0.4 0.3-0.7s-0.1-0.5-0.3-0.7c-0.4-0.4-1-0.4-1.4 0z"></path></svg>',
            warn: '<svg viewBox="0 0 24 24" height="24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M23 17.5l-8.4-14.2c-0.4-0.7-1.1-1.2-1.9-1.4s-1.6-0.1-2.3 0.3c-0.4 0.2-0.8 0.6-1 1 0 0 0 0 0 0l-8.4 14.3c-0.8 1.4-0.3 3.3 1.1 4.1 0.4 0.3 0.9 0.4 1.4 0.4h17c0.8 0 1.6-0.3 2.1-0.9 0.6-0.6 0.9-1.3 0.9-2.1-0.1-0.5-0.2-1.1-0.5-1.5zM21.2 19.7c-0.2 0.2-0.5 0.3-0.7 0.3h-17c-0.2 0-0.3 0-0.5-0.1-0.5-0.3-0.6-0.9-0.4-1.4l8.5-14.1c0.1-0.1 0.2-0.3 0.3-0.3 0.5-0.3 1.1-0.1 1.4 0.3l8.5 14.1c0.1 0.1 0.1 0.3 0.1 0.5 0.1 0.3-0.1 0.5-0.2 0.7z"></path><path d="M12 8c-0.6 0-1 0.4-1 1v4c0 0.6 0.4 1 1 1s1-0.4 1-1v-4c0-0.6-0.4-1-1-1z"></path><path d="M11.3 16.3c-0.2 0.2-0.3 0.4-0.3 0.7s0.1 0.5 0.3 0.7c0.2 0.2 0.4 0.3 0.7 0.3s0.5-0.1 0.7-0.3c0.2-0.2 0.3-0.5 0.3-0.7s-0.1-0.5-0.3-0.7c-0.4-0.4-1-0.4-1.4 0z"></path></svg>'
          },
          theClass: 'top-noti'
        }),
        RouterTestingModule,
        InfrastructureModule,

beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        SimpleNotificationsModule.forRoot(),
        NgbModule.forRoot(),
        RouterTestingModule.withRoutes([]),
        InfrastructureModule,
      ],
      providers: [
        { provide: ElectronService, useClass: MockElectron },
        { provide: RepoService, useClass: MockRepo },
        { provide: HotkeysService, useClass: MockHotkeys },
        { provide: CommitChangeService, useClass: MockCommitChange },
        { provide: LayoutService, useClass: MockLayout }
      ],
      declarations: [ActionToolbarComponent]
    })
      .compileComponents();
  }));