| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Test.Validity.Applicative
Description
Applicative properties
You will need TypeApplications to use these.
Synopsis
- applicativeSpecOnValid :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, GenValid (f Int)) => Spec
- applicativeSpec :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, GenUnchecked (f Int)) => Spec
- applicativeSpecOnArbitrary :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, Arbitrary (f Int)) => Spec
- applicativeSpecOnGens :: forall (f :: * -> *) (a :: *) (b :: *) (c :: *). (Show a, Eq a, Show (f a), Eq (f a), Show (f b), Eq (f b), Show (f c), Eq (f c), Applicative f, Typeable f, Typeable a, Typeable b, Typeable c) => Gen a -> String -> Gen (f a) -> String -> Gen (f b) -> String -> Gen (a -> b) -> String -> Gen (f (a -> b)) -> String -> Gen (f (b -> c)) -> String -> Spec
Documentation
applicativeSpecOnValid :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, GenValid (f Int)) => Spec Source #
Standard test spec for properties of Applicative instances for values generated with GenValid instances
Example usage:
applicativeSpecOnArbitrary @[]
applicativeSpec :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, GenUnchecked (f Int)) => Spec Source #
Standard test spec for properties of Applicative instances for values generated with GenUnchecked instances
Example usage:
applicativeSpecOnArbitrary @[]
applicativeSpecOnArbitrary :: forall (f :: * -> *). (Eq (f Int), Show (f Int), Applicative f, Typeable f, Arbitrary (f Int)) => Spec Source #
Standard test spec for properties of Applicative instances for values generated with Arbitrary instances
Example usage:
applicativeSpecOnArbitrary @[]
applicativeSpecOnGens :: forall (f :: * -> *) (a :: *) (b :: *) (c :: *). (Show a, Eq a, Show (f a), Eq (f a), Show (f b), Eq (f b), Show (f c), Eq (f c), Applicative f, Typeable f, Typeable a, Typeable b, Typeable c) => Gen a -> String -> Gen (f a) -> String -> Gen (f b) -> String -> Gen (a -> b) -> String -> Gen (f (a -> b)) -> String -> Gen (f (b -> c)) -> String -> Spec Source #
Standard test spec for properties of Applicative instances for values generated by given generators (and names for those generator).
Unless you are building a specific regression test, you probably want to use the other applicativeSpec functions.
Example usage:
applicativeSpecOnGens
@Maybe
@String
(pure "ABC")
"ABC"
(Just <$> pure "ABC")
"Just an ABC"
(pure Nothing)
"purely Nothing"
((++) <$> genValid)
"prepends"
(pure <$> ((++) <$> genValid))
"prepends in a Just"
(pure <$> (flip (++) <$> genValid))
"appends in a Just"