Angular Jasmine test case for navigation and getCurrentNavigation not working

Issue

My component has both getCurrentNavigation and router.navigate

I have implemented getCurrentNavigation from here

Now page having

constructor() {
 if (router.getCurrentNavigation().extras.state) {
      this.levelId = router.getCurrentNavigation().extras.state.arcadeSelectedGame;
    }
}

and navigation to another page

const navigationExtras: NavigationExtras = {
        state: {
          dummyObject,
          gameplay_log_data,
          arcadeLevelData: this.arcadeLevelData
        }
      };
 this.router.navigate(['ad-page'], navigationExtras)

Now I have applied solution from here then navigation works but then router.getCurrentNavigation().extras.state stopped working

Solution

I found a value to implement both the cases parallels. I have defined navigate: jasmine.createSpy('navigate') with getCurrentNavigation. and used useValue in provide in place of useClass.

Here is the code.

let mockRouter = {
    navigate: jasmine.createSpy('navigate'),
    getCurrentNavigation: () => {
      return {
         extras: {
            state:{
              arcadeSelectedGame: '-LAbVp7C0lTu9CV-Mgt-'
            }
          }
        }
      }
  }

In Provider array

{ provide: Router, useValue: mockRouter},

let router: Router;

Inside foreach

router = TestBed.inject(Router);

Test cases

it('Play click check navigation', async () => {
   component.playArcade();
   expect(mockRouter.navigate).toHaveBeenCalledTimes(1)
   expect(mockRouter.navigate).toHaveBeenCalledWith(['ad-page']);
})

Answered By - cakePHP