My opinion is to just wait if you think that your instructor is not supporting the idea. Maybe you do know the techniques but sometimes the instructor may see something else that needs improvement (body movement, some small shuffle or not hesitating, etc.) and that is what they are looking for before testing you. Personally, i do not really like to test and put it off as long as possible! jajaja
My opinion would be that you just do not worry about testing and just TRAIN. Concentrate as much as possible on training and getting better and as you do that your intructor will let you know when he wants to promote you. Anyways, that is my opinion.