David B. wrote last Friday, April 21, 2006 2:52 AM:
Uh, how ro I find documentation about unit test?
it is built-in in ruby.
there are lots of docs on it since it is one of the most loved among
rubyist 
you can start reading it fr the pickaxe or fr ruby-doc site
http://www.ruby-doc.org/stdlib/libdoc/test/unit/rdoc/classes/Test/Unit.html
kind regards -botp