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Within LTS Haskell 24.6 (ghc-9.10.2)
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shrinkBoundedEnum :: (Bounded a, Enum a, Eq a) => a -> [a]QuickCheck Test.QuickCheck Shrink an element of a bounded enumeration.
Example
data MyEnum = E0 | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9 deriving (Bounded, Enum, Eq, Ord, Show)
>>> shrinkBoundedEnum E9 [E0,E5,E7,E8]
>>> shrinkBoundedEnum E5 [E0,E3,E4]
>>> shrinkBoundedEnum E0 []
arbitraryBoundedEnum :: (Bounded a, Enum a) => Gen aQuickCheck Test.QuickCheck.Arbitrary Generates an element of a bounded enumeration.
arbitraryBoundedIntegral :: (Bounded a, Integral a) => Gen aQuickCheck Test.QuickCheck.Arbitrary Generates an integral number. The number is chosen uniformly from the entire range of the type. You may want to use arbitrarySizedBoundedIntegral instead.
arbitraryBoundedRandom :: (Bounded a, Random a) => Gen aQuickCheck Test.QuickCheck.Arbitrary Generates an element of a bounded type. The element is chosen from the entire range of the type.
arbitrarySizedBoundedIntegral :: (Bounded a, Integral a) => Gen aQuickCheck Test.QuickCheck.Arbitrary Generates an integral number from a bounded domain. The number is chosen from the entire range of the type, but small numbers are generated more often than big numbers. Inspired by demands from Phil Wadler.
shrinkBoundedEnum :: (Bounded a, Enum a, Eq a) => a -> [a]QuickCheck Test.QuickCheck.Arbitrary Shrink an element of a bounded enumeration.
Example
data MyEnum = E0 | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9 deriving (Bounded, Enum, Eq, Ord, Show)
>>> shrinkBoundedEnum E9 [E0,E5,E7,E8]
>>> shrinkBoundedEnum E5 [E0,E3,E4]
>>> shrinkBoundedEnum E0 []
functionBoundedEnum :: (Eq a, Bounded a, Enum a) => (a -> b) -> a :-> bQuickCheck Test.QuickCheck.Function Provides a Function instance for types with Bounded and Enum. Use only for small types (i.e. not integers): creates the list [minBound..maxBound]!
chooseBoundedIntegral :: (Bounded a, Integral a) => (a, a) -> Gen aQuickCheck Test.QuickCheck.Gen A fast implementation of choose for bounded integral types.
arbitraryBoundedEnum :: (Bounded a, Enum a) => Gen atasty-quickcheck Test.Tasty.QuickCheck Generates an element of a bounded enumeration.
arbitraryBoundedIntegral :: (Bounded a, Integral a) => Gen atasty-quickcheck Test.Tasty.QuickCheck Generates an integral number. The number is chosen uniformly from the entire range of the type. You may want to use arbitrarySizedBoundedIntegral instead.