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Debug.QuickCheck Portability portable Stability experimental Maintainer libraries@haskell.org

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.

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

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

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

data Config

Constructors Config configMaxTest :: Int configMaxFail :: Int configSize :: (Int -> Int) configEvery :: (Int -> [String] -> String)

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

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

(==>) :: (Testable a) => Bool -> a -> Property

label :: (Testable a) => String -> a -> Property

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

classify :: (Testable a) => Bool -> String -> a -> Property

trivial :: (Testable a) => Bool -> a -> Property

data Gen a

Instances Functor Gen Monad Gen

elements :: [a] -> Gen a

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

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

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

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

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

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

oneof :: [Gen a] -> Gen a

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

vector :: (Arbitrary a) => Int -> Gen [a]

class Arbitrary a where

Methods coarbitrary :: a -> Gen b -> Gen b arbitrary :: Gen a Instances Arbitrary () Arbitrary Bool Arbitrary Int Arbitrary Integer Arbitrary Float Arbitrary Double (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) (Arbitrary a) => Arbitrary [a] (Arbitrary a, Arbitrary b) => Arbitrary (a -> b) Arbitrary (Poly a)

rand :: Gen StdGen

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

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

class Testable a where

Methods property :: a -> Property Instances Testable () Testable Bool Testable Result Testable Property (Arbitrary a, Show a, Testable b) => Testable (a -> b)

data Property

Instances Testable Property

data Result

Constructors Result ok :: (Maybe Bool) stamp :: [String] arguments :: [String] Instances Testable Result

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

evaluate :: (Testable a) => a -> Gen Result

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