QuickCheck

Automatic testing of Haskell programs

Version on this page:	2.8.2
LTS Haskell 23.21:	2.14.3
Stackage Nightly 2025-05-04:	2.15.0.1@rev:1
Latest on Hackage:	2.15.0.1@rev:1

See all snapshots QuickCheck appears in

BSD-3-Clause licensed by Koen Claessen

Maintained by QuickCheck developers

This version can be pinned in stack with:QuickCheck-2.8.2@sha256:aa0e66c84bd1c52b39f6a20a425b80c12cd82b4c03d51dc7930f45ba8ea3dea0,5235

Module documentation for 2.8.2

Test
- Test.QuickCheck

Depends on 6 packages(full list with versions):

base, containers, random, template-haskell, tf-random, transformers

Used by 75 packages in lts-7.5(full list with versions):

Agda, alex, b9, bitcoin-payment-channel, bitx-bitcoin, camfort, carray, ChasingBottoms, checkers, chell-quickcheck, clash-prelude, compdata, crypto-api-tests, crypto-cipher-tests, cryptol, digits, doctest-prop, EdisonCore, FenwickTree, fgl-arbitrary, fuzzcheck, haskoin-core, HaTeX, hbayes, HCodecs, hjsonpointer, hjsonschema, holy-project, hoogle, hPDB, hPDB-examples, hpio, hspec, hspec-core, hspec-golden-aeson, hspec-meta, hspec-wai, HTF, inline-c, jose, and many more

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.

You can find a (slightly out-of-date but useful) manual at http://www.cse.chalmers.se/~rjmh/QuickCheck/manual.html.