Most unprofessional interview I have ever had - Fitter Pavilion Structures Employee Review

I applied for a position which did not state that pre employment testing would be required. When I went to the interview I was asked if I smoked pot being honest I said yes about a week ago but can pass test if required given the time. I was then told "I am a pothead and don't want to work" despite my journeyman status and stellar resume. Shocked and angered doesn't begin to explain how I feel.