It has been designed with Common Lisp's interactive development model in mind.

Features: - Test and test suite hierarchies allow test to be organized into hierarchies to ease running. - Functions for re-running recently run tests. - Inter-test dependencies. - Specification based testing ala QuickCheck. - Redefined macros are instantly seen by the test code, no explicit recompilation required (this is exactly what LispUnit and FReT do).