How to use the built-in unit testing module?

There seems to be a built-in unit test module in Kohana 3.x.

How can I use this? I can't find any official documentation regarding this module and even Google doesn't provide good ar开发者_如何学Cticles.

I would appreciate good links or any kind Hello, World! unit test example!

Enable the module in your bootstrap.php by uncommenting it and go to /unittest/ in your browser. There are several example tests included.