2DRaycast is shooting slightly in wrong directions

I wanted just a simple 2DRaycast, which points from my character to my mousePointer. So I found the following code in the Internet, most people seem to use it like that. So I tried it, but it isn't working for me like it is supposed to do, check the screenshot below. The direction is kinda weird, so I tried some variants of the variables and tried with Normalize, which didn't solve the problem.

 Vector2 test = new Vector2 (Camera.main.ScreenToWorldPoint (Input.mousePosition).x, Camera.main.ScreenToWorldPoint (Input.mousePosition).y);
             Vector3 test1 = (Camera.main.ScreenToWorldPoint (Input.mousePosition));
             //test.Normalize ();
             RaycastHit2D hit = Physics2D.Raycast (transform.position, test);
             Debug.DrawRay (transform.position, test, Color.red);

I tested both variables, test and test1, same things happen, even with Normalize and without it. The following Screenshot shows, what happens (The red thing is the mouse pointer)