unit test cases for below snapshot please < Jasmin, Kerma >

[Dev C]

 ngOnDestroy() : void{

    this.destroy$.next(true);

  }

  scroller(page:number) {

    let scroller = document.getElementById("scroll")

    if(scroller!= null){

      scroller.scrollTop=0;

    }

  }

[Dev C]

Anyone can help menin this please.

---------- Forwarded message ----------
From: Dev C <chauhan...@gmail.com>
Date: Wednesday, October 30, 2019
Subject: unit test cases for below snapshot please < Jasmin, Kerma >
To: sande...@gmail.com

hello sander can you please help me on this please

--
Sent from my mi note 4 phone.

[Dev C]

Any help on this, can you pls help me writing kerma/jasmin unit test cases for me.