Reia aims to implement a test framework in the spirit of mspec
(see http://github.com/rubyspec/mspec...
This framework will depend on a number of language features
being properly implemented to begin with, including
classes/objects, inheritance, and blocks.
In the meantime, a more primitive self-hosted test-framework is
in place. This framework is somewhat ugly but designed so that
tests written in it will convert over easily to an mspec-like
framework when it becomes available.