Drug testing at preliminary hearing?

I was arrested about 4 months ago on drug-related (felony) charges. Although, I haven't had a preliminary hearing as of yet. It is scheduled for July 20th. Can the court legally order a drug test at the time of the preliminary hearing? I've done research but have yet to find any suggestions that this will happen (or has ever happened). The case falls under Tennessee jurisdiction. Fortunately, I know that one of the felony charges cannot be proven, because it never happened. I digress; what is the probability that this will happen? (professional answers only, please.)