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QuickCheck: Automatic testing of Haskell programs

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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 quickcheck-instances companion package provides instances for types in Haskell Platform packages at the cost of additional dependencies.

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Flags

Manual Flags

NameDescriptionDefault
templatehaskell

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

Enabled
Automatic Flags
NameDescriptionDefault
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

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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 (info)
Change log changelog
Dependencies base (>=4.3 && <5), containers, deepseq (>=1.1.0.0), ghc-prim, old-locale, old-time, random (>=1.0.0.3 && <1.3), splitmix (>=0.1 && <0.2), template-haskell (>=2.4), transformers (>=0.3) [details]
Tested with ghc ==7.0.4 || ==7.2.2 || >=7.4
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>
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 2.14.3)
Uploaded by NickSmallbone at 2023-05-31T15:38:24Z
Distributions Arch:2.14.3, Debian:2.13.2, Fedora:2.14.3, FreeBSD:2.8.1, LTSHaskell:2.14.3, NixOS:2.14.3, Stackage:2.14.3, openSUSE:2.14.3
Reverse Dependencies 791 direct, 8001 indirect [details]
Downloads 439114 total (1186 in the last 30 days)
Rating 2.75 (votes: 20) [estimated by Bayesian average]
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Status Docs uploaded by user
Build status unknown [no reports yet]

Readme for QuickCheck-2.14.3

[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