I have worked in an Airline where there were alcohol tests conducted in the briefing room almost every day. The tests were performed by hirecops that normally worked airport security. Can you imagine?
I am also against it- I never drink the day before a flight, but the stress of being tested in front of all the other crewmembers was still there. And the underlying inisinuations, and the fact that being a pilot in that company made everybody suspect you of being a drunk was far from plesant.
Let's hope the union guys stop this!