Test coming up soon......

ohk guys, i am new to this site, and all, and have been a smoker for about 2 years now......my problem is the fact that i have smoked prob about everyday for about 5 months or so, and i now have a test coming up this monday for a job. I have not smoked for about 3 weeks now, and was wondering if you guys think i will be fine and what else could i do to pass this test....also, heres some info on me, i am about 6ft tall and weight around 215-220..hope this helps, and thanks guys for any info.....btw: i have been drinking a good amount of water aswell, hopeing this helps me.