You are looking at historical revision 26526 of this page. It may differ significantly from its current revision.
cluckcheck is a Chicken Scheme port of the QuickCheck unit test framework.
cluckcheck is a different kind of unit test framework. Rather than using a bunch of manual assert-assert-assert statements, cluckcheck tests properties. For an overview of the QuickCheck methodology, see the homepage.
Andrew Pennebaker (Homepage)
No egg requirements.
Generate a random integer.
> (use cluckcheck) > (gen-int) 180[procedure] (gen-bool)
Generate a random boolean.
> (gen-bool) #t[procedure] (gen-char)
Generate a random character.
> (gen-char) #\g[procedure] (gen-list gen)
Generate a random list populated by gen.
> (gen-list gen-int) (103 24 45 253 227 28 92 45 235 193 212 27 9 195 224 228 103 255)
gen-list can be combined with other generators, including custom generators, to create generators for complex data structures. See gen-string.[procedure] (gen-string)
Generate a random string. gen-string is a wrapper around (gen-list gen-char).
> (gen-string) "\x05&o@\by\x00J &\x00\v\x1691\x05\x19\x14z\r<VxU\x1b\x06~(wE\x05\x03LB&T\x1fLl-\x15\x06"[procedure] (for-all property gen1 gen2 gen3...)
Tests a property function with values generated by the generator functions. If the property returns false, testing halts and the offending input values are printed to the screen.
> (for-all even? gen-int) *** Failed! (57)
Here, the test fails because an integer (57) is found, that is not even.
For more examples, see example.scm.
cluckcheck 0.0 - First release