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quickcheck automatic testing of haskell programs hackage package search browse what s new upload user accounts quickcheck automatic testing of haskell programs bsd3 library testing propose tags report a vulnerability quickcheck is a library for random testing of program properties the programmer provides a specification of the program in the form of properties which functions should satisfy and quickcheck then tests that the properties hold in a large number of randomly generated cases specifications are expressed in haskell using combinators provided by quickcheck quickcheck provides combinators to define properties observe the distribution of test data and define test data generators most of quickcheck s functionality is exported by the main test quickcheck module the main exception is the monadic property testing library in test quickcheck monadic if you are new to quickcheck you can try looking at the following resources the official quickcheck manual it s a bit out of date in some details and doesn t cover newer quickcheck features but is still full of good advice https begriffs com posts 2017 01 14 design use quickcheck html a detailed tutorial written by a user of quickcheck the quickcheck instances companion package provides instances for types in haskell platform packages at the cost of additional dependencies skip to readme modules index quick jump test test quickcheck test quickcheck all test quickcheck arbitrary test quickcheck compat test quickcheck exception test quickcheck features test quickcheck function test quickcheck gen test quickcheck gen unsafe test quickcheck modifiers test quickcheck monadic test quickcheck monoids test quickcheck poly test quickcheck property test quickcheck random test quickcheck state test quickcheck test test quickcheck text flags manual flags name description default templatehaskell build test quickcheck all which uses template haskell enabled automatic flags name description default old random build against a pre 1 2 0 version of the random package disabled use f flag to enable a flag or f flag to disable that flag more info downloads quickcheck 2 18 0 0 tar gz browse cabal source package package description as included in the package maintainer s corner package maintainers donaldstewart koenclaessen nicksmallbone simonmarlow maximilian_algehed for package maintainers and hackage trustees edit package information candidates 2 12 1 2 12 5 2 13 2 2 14 1 2 16 0 0 2 17 0 0 2 18 0 0 versions rss 1 0 1 1 0 0 1 2 0 0 1 2 0 1 2 1 2 1 0 1 2 1 0 2 2 1 0 3 2 1 1 2 1 1 1 2 1 2 2 2 2 3 2 3 0 1 2 3 0 2 2 4 2 4 0 1 2 4 1 2 4 1 1 2 4 2 2 5 2 5 1 2 5 1 1 2 6 2 7 2 7 1 2 7 2 2 7 3 2 7 4 2 7 5 2 7 6 2 8 2 8 1 2 8 2 2 9 2 9 1 2 9 2 2 10 2 10 0 1 2 10 1 2 11 2 11 1 2 11 2 2 11 3 2 12 2 12 1 2 12 2 2 12 3 2 12 4 2 12 5 2 12 6 2 12 6 1 2 13 2 13 1 2 13 2 2 14 2 14 1 2 14 2 2 14 3 2 15 2 15 0 1 2 16 0 0 2 17 0 0 2 17 1 0 2 18 0 0 info change log changelog md dependencies base 4 14 5 containers data array byte deepseq 1 1 0 0 random 1 0 0 3 1 4 splitmix 0 1 0 2 0 2 template haskell 2 4 transformers 0 3 details tested with ghc 8 10 9 15 hugs 0 license bsd 3 clause copyright 2000 2019 koen claessen 2006 2008 björn bringert 2009 2019 nick smallbone author koen claessen koen chalmers se maintainer nick smallbone nick smallbone se uploaded by maximilian_algehed at 2026 02 26t12 42 14z category testing home page https github com nick8325 quickcheck bug tracker https github com nick8325 quickcheck issues source repo head git clone https github com nick8325 quickcheck this git clone https github com nick8325 quickcheck tag 2 18 distributions arch 2 15 0 1 fedora 2 15 0 1 ltshaskell 2 15 0 1 stackage 2 16 0 0 reverse dependencies 837 direct 8991 indirect details downloads 445283 total 389 in the last 30 days rating 2 75 votes 22 estimated by bayesian average your rating λ λ λ status docs available build log last success reported on 2026 02 26 all 1 reports readme for quickcheck 2 18 0 0 back to package description this is quickcheck 2 a library for random testing of program properties add quickcheck to your package dependencies to use it in tests or repl the quickcheck instances 1 companion package provides instances for types in haskell platform packages at the cost of additional dependencies the make hugs script makes a hugs compatible version of quickcheck it may also be useful for other non ghc implementations 1 http hackage haskell org package quickcheck instances produced by hackage and cabal 3 16 1 0