Haskell Hierarchical Libraries (QuickCheck package) Contents Index

Test.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.

Documentation

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)

defaultConfig :: Config

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 arbitrary :: Gen a coarbitrary :: a -> Gen b -> Gen b Instances Arbitrary Bool Arbitrary Double Arbitrary Float Arbitrary Int Arbitrary Integer Arbitrary () (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 b) => Arbitrary (a -> b) Arbitrary (Poly a) Arbitrary a => Arbitrary [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 Bool Testable Property Testable Result Testable () (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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