I have a roommate who claims to have depression. He constantly uses this as an excuse for him never pulling his weight around the flat. I'm seriously convinced that he fakes it to get out of work.

He really doesn't have anything to be depressed about: all he does is rot away on Dota 2 and rant about hating Pakistanis like a ten year old who just discovered what /pol is.

tl;dr Are there any noticeable signs of depression so that I can know if he is faking it or not?