I got caught with a controlled substance and am now on probation for 2 years would they test me for both drugs and alch. Or just drugs

Probably both. Remember to provide doctor's scripts for controlled substances. You can ask about testing for alcohol.

They will test for both regardless if you were busted for drugs. It's all the same to them. Drugs or alcohol and if you are on probation your probation paperwork most likely says you are not to consume alcohol or do illegal drugs. So there you are.