I recently got introduced to Erlang and have a question. How do you unit test your code? I recall reading that the CouchDB author was obliged to use JavaScript for automating his unit tests. What was your experience?
eunit is good for simple functional tests (etap is another option here) but it is not really sufficient for testing things like gen_servers and more complex behavior. OTP includes a testing framework (common test) that does these sorts of tests and is in fact used to test the rest of OTP, but it is a PITA to configure and documentation is rather thin so most people opt for low-level eunit tests and hope for the best when it comes to the more complicated bahaviors of the system...