Fake mouse position in 4.6 UI (ANSWERED)

I've been attempting to figure out how to fabricate mouse input on the new UI all day, and feel like I'm stuck in the mud. As the UI is new, it seems there is close to zero in the way of documentation on the scripting end of the EventSystem.

Problem:
For testing purposes, what I am trying to do is get a scroll bar on a canvas to react to 2 key presses. I have the the scroll bar getting selected, and even firing it's OnDrag event callback (as well as other various callbacks), yet...

Fake mouse position in 4.6 UI (ANSWERED)