Rules of Conditional Discharge in NJ.?

I have been placed on conditional discharge (unsupervised probation) by the court in NJ for possession and paraphernalia. I know i will have to take random drug tests and stay clean for a year. But my questions is that will I get in trouble if i consume alcohol and get drug tested after. I am under 21 so i know im not supposed to be drinking but if i do drink and get tested the day after or something is it considered a violation?