They asked me take a FizzBuzz test. It's common. Google it.
Sigiloso
I was given an offer the following Monday. It was 15% less than I currently make, and many of the benefits would not start on the first day. Given the terrible offer and the lack of development tools, I had little confidence that the owner was fully invested in the project, so I declined. They asked me to give a counter-offer, and I declined again.