{- I have written a program (below) to run a test suite for a list of functions: [isTotalJunc, isPartialJunc] where each function receives a datum of type ApplyArg whose value slot is one element at a time of the list of types below: [JNone, JOne, JAny, JAll] I therefore must run 8 tests (the cross product of functions and types). Right now, here is the output: *Main> test_total_partial ["fun: (->)input: JNoneoutput: True","fun: (->)input: JOneoutput: False","fun: (->)input: JAnyoutput: False","fun: (->)input: JAlloutput: True","fun: (->)input: JNoneoutput: False","fun: (->)input: JOneoutput: True","fun: (->)input: JAnyoutput: True","fun: (->)input: JAlloutput: False"] -- One problem is that functions do not print as their name. The call to (show f) in showres simply yields (->) -- Another problem is that I cannot manage to separate each string with a carriage return. Any help with these problems is appreciated. -} test_total_partial = let funs = [isTotalJunc, isPartialJunc] types = [JNone, JOne, JAny, JAll] mkdat typ = ApplyArg "somename" (VJunc $ Junc typ emptySet emptySet) False showres f t r = "fun: " ++ (show f) ++ "input: " ++ (show t) ++ "output: " ++ (show r) runtest f t = do { retval <- f (mkdat t); return $ (showres f t retval) } in [ (showres f t (f (mkdat t))) | f <- funs, t <- types ] -- Carter's Compass: I know I'm on the right track when, by deleting something, I'm adding functionality.