The Ford controller doesn't send power to the brakes when you are moving less than about 10 MPH. I don't like it either, don't understand why they did that, but fortunately the levers on the controller still work even when stationary. Just have someone pinch them for you, or if you must work alone, a small woodworking spring clamp could be used.
As far as a pull test, that should always be done with the controller levers, not the service brake, so I don't get that part of your question. The point is to test the trailer brakes, not the truck service brakes.