Copyright	(c) Koen Claessen, John Hughes 2001
License	BSD-style (see the file libraries/base/LICENSE)
Maintainer	libraries@haskell.org
Stability	experimental
Portability	portable
Safe Haskell	Safe-Inferred
Language	Haskell98

Test.QuickCheck

Description

QuickCheck v.0.2 DRAFT implementation; last update 000104. Koen Claessen, John Hughes. This file represents work in progress, and might change at a later date.

Documentation

quickCheck :: Testable a => a -> IO () Source

verboseCheck :: Testable a => a -> IO () Source

test :: Testable a => a -> IO () Source

data Config Source

Constructors

Config
Fields configMaxTest :: Int configMaxFail :: Int configSize :: Int -> Int configEvery :: Int -> [String] -> String

defaultConfig :: Config Source

check :: Testable a => Config -> a -> IO () Source

forAll :: (Show a, Testable b) => Gen a -> (a -> b) -> Property Source

(==>) :: Testable a => Bool -> a -> Property infixr 0 Source

label :: Testable a => String -> a -> Property Source

collect :: (Show a, Testable b) => a -> b -> Property Source

classify :: Testable a => Bool -> String -> a -> Property infix 1 Source

trivial :: Testable a => Bool -> a -> Property Source

data Gen a Source

Instances

Monad Gen
Functor Gen

elements :: [a] -> Gen a Source

two :: Monad m => m a -> m (a, a) Source

three :: Monad m => m a -> m (a, a, a) Source

four :: Monad m => m a -> m (a, a, a, a) Source

sized :: (Int -> Gen a) -> Gen a Source

resize :: Int -> Gen a -> Gen a Source

choose :: Random a => (a, a) -> Gen a Source

oneof :: [Gen a] -> Gen a Source

frequency :: [(Int, Gen a)] -> Gen a Source

vector :: Arbitrary a => Int -> Gen [a] Source

class Arbitrary a where Source

Methods

arbitrary :: Gen a Source

coarbitrary :: a -> Gen b -> Gen b Source

Instances

Arbitrary Bool
Arbitrary Double
Arbitrary Float
Arbitrary Int
Arbitrary Integer
Arbitrary ()
Arbitrary a => Arbitrary [a]
Arbitrary a => Arbitrary (Maybe a)
(Arbitrary a, Arbitrary b) => Arbitrary (a -> b)
(Arbitrary a, Arbitrary b) => Arbitrary (Either a b)
(Arbitrary a, Arbitrary b) => Arbitrary (a, b)
(Arbitrary a, Arbitrary b, Arbitrary c) => Arbitrary (a, b, c)
(Arbitrary a, Arbitrary b, Arbitrary c, Arbitrary d) => Arbitrary (a, b, c, d)

rand :: Gen StdGen Source

promote :: (a -> Gen b) -> Gen (a -> b) Source

variant :: Int -> Gen a -> Gen a Source

class Testable a where Source

Methods

property :: a -> Property Source

Instances

Testable Bool
Testable ()
Testable Property
Testable Result
(Arbitrary a, Show a, Testable b) => Testable (a -> b)

data Property Source

Instances

Testable Property

data Result Source

Constructors

Result
Fields ok :: Maybe Bool stamp :: [String] arguments :: [String]

Instances

Testable Result

generate :: Int -> StdGen -> Gen a -> a Source

evaluate :: Testable a => a -> Gen Result Source