The QuickCheck package

[ Tags: bsd3, library, testing ] [ Propose Tags ]

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 defined in the QuickCheck library. QuickCheck provides combinators to define properties, observe the distribution of test data, and define test data generators.

The official QuickCheck manual explains how to write generators and properties; it is out-of-date in some details but still full of useful advice.

A user of QuickCheck has written an unofficial, but detailed, tutorial which you can find at

[Skip to Readme]


Versions 1.0,,,, 2.1,,,, 2.1.1,, 2.1.2, 2.2, 2.3,,, 2.4,, 2.4.1,, 2.4.2, 2.5, 2.5.1,, 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,, 2.10.1, 2.11, 2.11.1, 2.11.2, 2.11.3 (info)
Change log changelog
Dependencies base (>=4.3 && <5), containers, deepseq, ghc-prim, old-locale, old-time, random, template-haskell (>=2.4), tf-random (>=0.4), transformers (>=0.3) [details]
License BSD3
Copyright 2000-2017 Koen Claessen, 2006-2008 Björn Bringert, 2009-2017 Nick Smallbone
Author Koen Claessen <>
Maintainer Nick Smallbone <>; see also QuickCheck mailing list (!forum/haskell-quickcheck)
Category Testing
Home page
Bug tracker
Source repo head: git clone
this: git clone 2.11.3)
Uploaded Fri Jan 12 19:10:03 UTC 2018 by NickSmallbone
Distributions Arch:2.10.1, Debian:2.8.1, Fedora:2.10.1, FreeBSD:2.8.1, LTSHaskell:2.10.1, NixOS:2.11.3, Stackage:2.11.3, openSUSE:2.10.1
Downloads 317899 total (909 in the last 30 days)
Rating 2.75 (votes: 9) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2018-01-13 [all 1 reports]
Hackage Matrix CI





Build Test.QuickCheck.All, which uses Template Haskell.


Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainer's Corner

For package maintainers and hackage trustees

Readme for QuickCheck-2.11.3

[back to package description]
This is QuickCheck 2, a library for random testing of program properties.

Install it in the usual way:

$ cabal install

There is a Google group for user discussion and questions at!forum/haskell-quickcheck.