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 a => Arbitrary (Maybe a)

Arbitrary (Poly a)

Arbitrary a => Arbitrary [a]

(Arbitrary a, Arbitrary b) => Arbitrary (Either a b)

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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