30 day marijuana break drug test?

I am 21 year old college student who needs some help/advice. First of all, if your answer to this question is going to be "don't do drugs" let me say PISS OFF. MY BODY MY CHOICE. Anyway, I smoked about 3 times a day every day for a yr or so, before taking a 30 day break for a drug test. I foolishly thought I wasn't going to be tested, so I smoked a bowl last night (Thursday night) and now I found out I have to take a drug test by Wednesday morning. I am very thin 6'2" 150 lbs, have a decent metabolism, but am not very physically active (pretty much a couch potato). My question is after my 30 day break, followed by a minor slip up, what are my chances of passing this test 6 days after I smoked. Note: I will probably not be doing any physical activity but I will be drinking a ton of water, coffee, beer, cranberry juice (basically all diuretics) QUICK ANSWERS ARE APPRECIATED. THANKS!!!