Angular Unit testing : Error: Cannot match any routes. URL Segment: 'home/advisor'

Am working on unit testing under my angular 4.0.0 app , some method in my real component is calling manual routing via :

method(){
....
    this.navigateTo('/home/advisor');
....
}

with navigateTo is a custom routing method calling this :

  public navigateTo(url: string) {
    this.oldUrl = this.router.url;
    this.router.navigate([url], { skipLocationChange: true });
  }

i have this routing file :

import ...     // Components and dependencies

const homeRoutes: Routes = [
  {
    path: 'home', component: HomeComponent,
    children: [
      {
        path: 'registration',
        component: RegistrationComponent,
        children: [
          {
            path: 'synthese',
            component: SyntheseComponent
          },
          {
            path: 'queue',
            component: QueueComponent,
            children: [
              {
                path: 'queue-modal',
                component: QueueModalComponent
              },
              {
                path: 'confirm',
                component: ConfirmComponent
              }
            ]
          }
        ]
      },
      {
        path: 'toolbox',
        component: ToolboxComponent
      },
      {
        path: 'appointment',
        component: AppointmentRegistrationComponent
      },
      {
        path: 'appointment-validation',
        component: AppointmentValidationComponent
      },
      {
        path: 'datepicker',
        component: DatePickerComponent
      },
      {
        path: 'validation/:defaultNumber',
        component: ValidationComponent,
        children: [
                   {
                     path: 'synthese',
                     component: SyntheseComponent
                   }
                   ]
      },
      {
        path: 'modalField',
        component: ModalFieldComponent
      },
      {
        path: 'search',
        component: SearchComponent
      },
      {
        path: 'advanced-search',
        component: AdvancedSearchComponent
      },
      {
        path: 'tools',
        component: ToolsComponent
      },
      {
        path: 'advisor',
        component: AdvisorComponent
      },
      {
        path: 'pilote',
        component: PilotComponent
      },
      {
          path: 'blank',
          component: BlankComponent
        },
      {
        path: 'view-360/:id',
        component: View360Component,
        children: [
          {
            path: 'client',
            component: ClientComponent
          },
          {
            path: 'tools',
            component: ToolsAdvisorComponent
          },
          {
            path: 'valid-close',
            component: ValidCloseComponent
          },
          {
            path: 'application',
            component: ApplicationView360Component
          }
        ],
        canActivate: [AuthGuardAdviser]
      },
      {
        path: 'view-360',
        component: View360Component,
        children: [
          {
            path: 'client',
            component: ClientComponent
          }
        ],
        canActivate: [AuthGuardAdviser]
      },
      {
        path: 'contract',
        component: ContractComponent
      },
      {
        path: 'queue-again',
        component: QueueAgainComponent
      },
      {
        path: 'stock',
        component: StockComponent,
        children: [
          {
            path: 'mobile',
            component: MobileComponent
          },
          {
            path: 'stock-level',
            component: StockLevelComponent
          }
        ]
      },
      {
        path: 'usefull-number',
        component: UsefullNumberComponent
      },
      {
        path: 'admin',
        loadChildren: 'app/home/admin/admin.module#AdminModule',
        //           component: AdminComponent,
        canActivate: [AuthGuardAdmin]
      },
      {
        path: 'rb',
        loadChildren: 'app/home/rb/rb.module#RbModule',
        //        component: RbComponent
        //        canActivate: [AuthGuardAdmin]
      },
      {
        path: 'tools-advisor',
        component: ToolsAdvisorComponent
      },
      {
        path: 'catalog/:haveClient',
        component: CatalogComponent
      },
      {
        path: 'application',
        component: ApplicationComponent
      },
    ]
  },

   ];

@NgModule({
  imports: [
    CommonModule,
    RouterModule.forChild(homeRoutes)
  ],
  exports: [
    RouterModule
  ],
  declarations: []
})
export class HomeRoutingModule { }

Strangely , even my application goes fonctionnally well ,but the test throws this error :

Failed: Uncaught (in promise): Error: Cannot match any routes. URL Segment: 'home/advisor' Error: Cannot match any routes. URL Segment: 'home/advisor'

it seems like i have some missing configuration .

Any ideas ??

Following my comment :

When you want to unit test your router, you have to use the testing module, not the actual one.

Start with

import { RouterTestingModule } from '@angular/router/testing';

Then, in your Testbed

imports: [RouterTestingModule]

Now you should be able to unit test your component

EDIT

To make a spy on your routing, what you have to do is

spyOn(component.router, 'navigate').and.returnValue(true);

And you expect will look like

expect(component.router.navigate).toHaveBeenCalledWith('/home/advisor');