How to unit test a Angular 4 component which uses router.paramMap

Question

I m new to angular 4 and trying to test one of the angular 4 feature router.paramMap from unit tests, Reading route params in fallowing way and working as expected in my applica

Answer 1

Your code has a problem, in order to get a param from the URL, you have to write things in a different way.

constructor(private router:Router, private actRoute:ActivatedRoute) {
}

ngOnInit() {
    this.router.paramMap
        .switchMap((params: ParamMap) => {
            params.get(id);
            ....
        })
        .subscribe((....) => {
            ....
        })
}