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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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