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Article contents:== Cluckcheck === Description cluckcheck is a Chicken Scheme port of the [[http://www.cse.chalmers.se/~rjmh/QuickCheck/|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. === Homepage [[http://www.yellosoft.us/quickcheck|YelloSoft QuickCheck]] === Source [[https://github.com/mcandre/cluckcheck|GitHub]] === Authors Andrew Pennebaker ([[http://www.yellosoft.us/|Homepage]]) === Requirements No egg requirements. === API <procedure>(gen-int)</procedure> Generate a random integer. > (import cluckcheck) > (gen-int) 180 <procedure>(gen-bool)</procedure> Generate a random boolean. > (gen-bool) #t <procedure>(gen-char)</procedure> Generate a random character. > (gen-char) #\g <procedure>(gen-list gen)</procedure> 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)</procedure> 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...)</procedure> 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 [[https://github.com/mcandre/cluckcheck/blob/master/example.scm|example.scm]]. === License BSD === Version History cluckcheck 0.0 - First releaseDescription of your changes:

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What do you get when you multiply 1 by 2?