Kyle,
It is rather difficult to tell whether you will have to resit your driving test again after getting banned because it actually depends on the circumstances. If the convicting court thinks you might need to take another test to get your license back, then you will have to do it. In your case, I think it is best if you ring the DVLA and ask them whether you will have to resit and they will be able to tell you as it would be noted in their records. I wouldn't worry too much about it if you haven't had a letter confirming the retate yet as it seems to me you wouldn't need one.