Questions on Unix testing

[kathy t skow]

Can anyone tell me if there are any public domain Unix test tools available?
We are looking for one that has these characteristics:
  
  > has a results checking routine that is more flexible than diff and comp
  > collects results at various phases of the tests
  
Where does someone pick up information on the public domain Unix test tools? 
  
Any information would be appreciated! If you any knowledge on this topic,
please send me mail at kts at udev.cdc.com.  
 
Thanks, much!!
 
Kathy Skow,  kts at udev.cdc.com
Control Data Corporation
Arden Hills, MN