Copyright	Daniel Mendler (c) 2016
License	MIT (see the file LICENSE)
Maintainer	mail@daniel-mendler.de
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Test.QuickCheck.Special

Description

The standard Arbitrary instances don't generate special values. This is fixed by this package which provides the newtype Special with an Arbitrary instance. The special values are given by the SpecialValues typeclass.

Synopsis

newtype Special a = Special {
- getSpecial :: a
}
class SpecialValues a where
- specialValues :: [a]

Documentation

newtype Special a #

Additionally to the standard Arbitrary instances, this generates special values with a small probability.

Constructors

Special
Fields getSpecial :: a

Instances

Functor Special #
Instance details Defined in Test.QuickCheck.Special Methods fmap :: (a -> b) -> Special a -> Special b # (<$) :: a -> Special b -> Special a #
Bounded a => Bounded (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods minBound :: Special a # maxBound :: Special a #
Enum a => Enum (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods succ :: Special a -> Special a # pred :: Special a -> Special a # toEnum :: Int -> Special a # fromEnum :: Special a -> Int # enumFrom :: Special a -> [Special a] # enumFromThen :: Special a -> Special a -> [Special a] # enumFromTo :: Special a -> Special a -> [Special a] # enumFromThenTo :: Special a -> Special a -> Special a -> [Special a] #
Eq a => Eq (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods (==) :: Special a -> Special a -> Bool # (/=) :: Special a -> Special a -> Bool #
Integral a => Integral (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods quot :: Special a -> Special a -> Special a # rem :: Special a -> Special a -> Special a # div :: Special a -> Special a -> Special a # mod :: Special a -> Special a -> Special a # quotRem :: Special a -> Special a -> (Special a, Special a) # divMod :: Special a -> Special a -> (Special a, Special a) # toInteger :: Special a -> Integer #
Num a => Num (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods (+) :: Special a -> Special a -> Special a # (-) :: Special a -> Special a -> Special a # (*) :: Special a -> Special a -> Special a # negate :: Special a -> Special a # abs :: Special a -> Special a # signum :: Special a -> Special a # fromInteger :: Integer -> Special a #
Ord a => Ord (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods compare :: Special a -> Special a -> Ordering # (<) :: Special a -> Special a -> Bool # (<=) :: Special a -> Special a -> Bool # (>) :: Special a -> Special a -> Bool # (>=) :: Special a -> Special a -> Bool # max :: Special a -> Special a -> Special a # min :: Special a -> Special a -> Special a #
Read a => Read (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods readsPrec :: Int -> ReadS (Special a) # readList :: ReadS [Special a] # readPrec :: ReadPrec (Special a) # readListPrec :: ReadPrec [Special a] #
Real a => Real (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods toRational :: Special a -> Rational #
Show a => Show (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods showsPrec :: Int -> Special a -> ShowS # show :: Special a -> String # showList :: [Special a] -> ShowS #
(Arbitrary a, SpecialValues a) => Arbitrary (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods arbitrary :: Gen (Special a) # shrink :: Special a -> [Special a] #
CoArbitrary a => CoArbitrary (Special a) #
Instance details Defined in Test.QuickCheck.Special Methods coarbitrary :: Special a -> Gen b -> Gen b #

class SpecialValues a where #

Provides a list of special values or edge cases

Methods

specialValues :: [a] #

Finite list of special values

Instances

SpecialValues Bool
Instance details Defined in Data.SpecialValues Methods specialValues :: [Bool] #
SpecialValues Char
Instance details Defined in Data.SpecialValues Methods specialValues :: [Char] #
SpecialValues Double
Instance details Defined in Data.SpecialValues Methods specialValues :: [Double] #
SpecialValues Float
Instance details Defined in Data.SpecialValues Methods specialValues :: [Float] #
SpecialValues Int
Instance details Defined in Data.SpecialValues Methods specialValues :: [Int] #
SpecialValues Int8
Instance details Defined in Data.SpecialValues Methods specialValues :: [Int8] #
SpecialValues Int16
Instance details Defined in Data.SpecialValues Methods specialValues :: [Int16] #
SpecialValues Int32
Instance details Defined in Data.SpecialValues Methods specialValues :: [Int32] #
SpecialValues Int64
Instance details Defined in Data.SpecialValues Methods specialValues :: [Int64] #
SpecialValues Integer
Instance details Defined in Data.SpecialValues Methods specialValues :: [Integer] #
SpecialValues Natural
Instance details Defined in Data.SpecialValues Methods specialValues :: [Natural] #
SpecialValues Rational
Instance details Defined in Data.SpecialValues Methods specialValues :: [Rational] #
SpecialValues Word
Instance details Defined in Data.SpecialValues Methods specialValues :: [Word] #
SpecialValues Word8
Instance details Defined in Data.SpecialValues Methods specialValues :: [Word8] #
SpecialValues Word16
Instance details Defined in Data.SpecialValues Methods specialValues :: [Word16] #
SpecialValues Word32
Instance details Defined in Data.SpecialValues Methods specialValues :: [Word32] #
SpecialValues Word64
Instance details Defined in Data.SpecialValues Methods specialValues :: [Word64] #
SpecialValues ()
Instance details Defined in Data.SpecialValues Methods specialValues :: [()] #
SpecialValues ByteString
Instance details Defined in Data.SpecialValues Methods specialValues :: [ByteString] #
SpecialValues ByteString
Instance details Defined in Data.SpecialValues Methods specialValues :: [ByteString] #
SpecialValues Scientific
Instance details Defined in Data.SpecialValues Methods specialValues :: [Scientific] #
SpecialValues Text
Instance details Defined in Data.SpecialValues Methods specialValues :: [Text] #
SpecialValues Text
Instance details Defined in Data.SpecialValues Methods specialValues :: [Text] #
SpecialValues a => SpecialValues [a]
Instance details Defined in Data.SpecialValues Methods specialValues :: [[a]] #
SpecialValues a => SpecialValues (Maybe a)
Instance details Defined in Data.SpecialValues Methods specialValues :: [Maybe a] #
(SpecialValues a, SpecialValues b) => SpecialValues (Either a b)
Instance details Defined in Data.SpecialValues Methods specialValues :: [Either a b] #
(SpecialValues a, SpecialValues b) => SpecialValues (a, b)
Instance details Defined in Data.SpecialValues Methods specialValues :: [(a, b)] #