QuickCheck-1.2.0.0: Automatic testing of Haskell programs Source code 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 () Source

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

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

data Config Source

Constructors Config 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 Source

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

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

classify :: Testable a => Bool -> String -> a -> Property 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 (Poly 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 ok :: Maybe Bool stamp :: [String] arguments :: [String] Instances Testable Result

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

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

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