| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Test.Validity.Shrinking
Description
Tests for Shrinking functions
You will need TypeApplications to use these.
Synopsis
- shrinkValiditySpec :: forall a. (Show a, Typeable a, GenValid a, GenInvalid a) => Spec
- shrinkValidSpec :: forall a. (Show a, Typeable a, GenValid a) => Spec
- shrinkValidSpecWithLimit :: forall a. (Show a, Typeable a, GenValid a) => Int -> Spec
- shrinkInvalidSpec :: forall a. (Show a, Typeable a, GenInvalid a) => Spec
- shrinkValidPreservesValidOnGenValid :: forall a. (Show a, GenValid a) => Property
- shrinkInvalidPreservesInvalidOnGenInvalid :: forall a. (Show a, GenInvalid a) => Property
- shrinkPreservesValidOnGenValid :: (Show a, GenValid a) => (a -> [a]) -> Property
- shrinkPreservesInvalidOnGenInvalid :: (Show a, GenInvalid a) => (a -> [a]) -> Property
- shrinkValidPreservesValid :: (Show a, GenValid a) => Gen a -> Property
- shrinkInvalidPreservesInvalid :: (Show a, GenInvalid a) => Gen a -> Property
- shrinkingStaysValid :: (Show a, Validity a) => Gen a -> (a -> [a]) -> Property
- shrinkingStaysInvalid :: (Show a, Validity a) => Gen a -> (a -> [a]) -> Property
- shrinkingPreserves :: Show a => Gen a -> (a -> [a]) -> (a -> Bool) -> Property
Documentation
shrinkValiditySpec :: forall a. (Show a, Typeable a, GenValid a, GenInvalid a) => Spec Source #
shrinkInvalidSpec :: forall a. (Show a, Typeable a, GenInvalid a) => Spec Source #
shrinkInvalidPreservesInvalidOnGenInvalid :: forall a. (Show a, GenInvalid a) => Property Source #
shrinkPreservesValidOnGenValid :: (Show a, GenValid a) => (a -> [a]) -> Property #
shrinkPreservesValidOnGenValid (:[])
shrinkPreservesInvalidOnGenInvalid :: (Show a, GenInvalid a) => (a -> [a]) -> Property #
shrinkPreservesInvalidOnGenInvalid (:[])
shrinkValidPreservesValid :: (Show a, GenValid a) => Gen a -> Property #
shrinkValidPreservesValid (pure 5)
shrinkInvalidPreservesInvalid :: (Show a, GenInvalid a) => Gen a -> Property #
shrinkInvalidPreservesInvalid (pure (1/0) :: Gen Double)
shrinkingStaysValid :: (Show a, Validity a) => Gen a -> (a -> [a]) -> Property #
shrinkingStaysValid (pure 5 :: Gen Double) (\d -> [d - 1, d - 2])