ng test

ResetPasswordComponent should create
[object ErrorEvent] thrown

Error: Cannot match any routes. URL Segment: 'auth/login'
at ApplyRedirects.noMatchError (VM4374 router.js:1455)
at CatchSubscriber.eval [as selector] (VM4374 router.js:1436)
at CatchSubscriber.error (VM4260 catchError.js:40)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at TapSubscriber._error (VM4280 tap.js:67)
at ApplyRedirects.noMatchError (VM4374 router.js:1455)
at CatchSubscriber.eval [as selector] (VM4374 router.js:1436)
at CatchSubscriber.error (VM4260 catchError.js:40)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at MapSubscriber.Subscriber._error (VM4156 Subscriber.js:90)
at MapSubscriber.Subscriber.error (VM4156 Subscriber.js:70)
at TapSubscriber._error (VM4280 tap.js:67)
at resolvePromise (VM4143 zone.js:813)
at resolvePromise (VM4143 zone.js:770)
at eval (VM4143 zone.js:872)
at ZoneDelegate.invokeTask (VM4143 zone.js:420)
at ProxyZoneSpec.onInvokeTask (VM4148 zone-testing.js:318)
at ZoneDelegate.invokeTask (VM4143 zone.js:419)
at Object.onInvokeTask (VM4143 zone.js:298)
at ZoneDelegate.invokeTask (VM4143 zone.js:419)
at Object.onInvokeTask (VM4151 core.js:4109)
at ZoneDelegate.invokeTask (VM4143 zone.js:419)
at

@NgModule({
  imports: [
    CommonModule,
    ReactiveFormsModule,
    FormsModule,
    RouterModule
  ],
  declarations: [
    LoginComponent,
    LogoutComponent,
    ForgotPasswordComponent,
    ResetPasswordComponent
  ],
  exports: [
    LoginComponent,
    ForgotPasswordComponent,
    ResetPasswordComponent,
    LogoutComponent
  ]
})
export class AuthModule { }

<a routerLink="/auth/login">Login</a>

Uncaught Error: Uncaught (in promise): Error: Cannot match any routes. URL Segment: 'members'
Error: Cannot match any routes. URL Segment: 'members'
at ApplyRedirects.push../node_modules/@angular/router/fesm5/router.js.ApplyRedirects.noMatchError
...

...

describe('SecondComponent', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [
RouterTestingModule.withRoutes([{path:'missing/path',component:SecondComponent}])
      ],
      declarations: [ SecondComponent ]
    })
  })

  ...

})

@Component({selector:'app-second',template:''})
class SecondComponent {}