PLEASEEE READ!!!! PLEASEEE!!!!!!!?

oK SOO few days ago Home depot called me for a interview blah blha blah w,e anyways i did the piss test and i gotta go tomorrow my friend said they do a test? ohh by the way im gonna b a cashier never worked b4!! anyways he told me i gotta pass the test to work ? butttt my question WHAT IDF I DONT PASS IT?! i wont b able to work???? and would they pay those days! lol =) gracias