Mary Jane users

I never go out/smoke, but I was invited to a party next week. I haven't smoked weed in almost a year, but I plan on doing so next week. I'm going to apply for a new job in late January early February if I were to take a pee test then would I be able to pass it? Not quite sure how it all works, just want to make sure I'll be okay. I have a relatively fast metabolism and im usually in the gym 4 days a week plus  very little junk food idk if that affects it