For my current web developer position I had to walk through generating a Ruby on Rails app and creating a blog with some controllers, models, etc. It was so basic that I was concerned the company would end up being terrible.

I’ve now worked there for 4+ years and I later found out they were simply filtering out applicants who claimed to know the framework but then didn’t even know basic Ruby. Like, applicants from completely different programming languages would apply and try to pretend they knew it come interview time.