How to test Angular2's router.navigate?

Question

I\'ve run into missing messages in other unit tests, but just to have a nice isolated example, I created an AuthGuard that checks if a user is

Answer 1

     it(`editTemplate() should navigate to template build module with query params`, inject(
        [Router],
        (router: Router) => {
          let id = 25;
          spyOn(router, "navigate").and.stub();
          router.navigate(["/template-builder"], {
            queryParams: { templateId: id }
          });
          expect(router.navigate).toHaveBeenCalledWith(["/template-builder"], {
            queryParams: { templateId: id }
          });
        }
      ));