Test.Syd.Validity.Monad

Monad properties

You will need TypeApplications to use these.

Documentation

monadSpecOnValid :: forall (f :: Type -> Type). (Eq (f Int), Show (f Int), Monad f, Typeable f, GenValid (f Int)) => Spec

Standard test spec for properties of Monad instances for values generated with GenValid instances

Example usage:

monadSpecOnValid @[]

monadSpec :: forall (f :: Type -> Type). (Eq (f Int), Show (f Int), Monad f, Typeable f, GenUnchecked (f Int)) => Spec

Standard test spec for properties of Monad instances for values generated with GenUnchecked instances

Example usage:

monadSpec @[]

monadSpecOnArbitrary :: forall (f :: Type -> Type). (Eq (f Int), Show (f Int), Monad f, Typeable f, Arbitrary (f Int)) => Spec

Standard test spec for properties of Monad instances for values generated with Arbitrary instances

Example usage:

monadSpecOnArbitrary @[]

monadSpecOnGens :: forall (f :: Type -> Type) (a :: Type) (b :: Type) (c :: Type). (Show a, Show (f a), Show (f b), Show (f c), Eq (f a), Eq (f b), Eq (f c), Monad 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 (a -> f b) -> String -> Gen (b -> f c) -> String -> Gen (f (a -> b)) -> String -> Spec

Standard test spec for properties of Monad instances for values generated by given generators (and names for those generator).

Example usage:

monadSpecOnGens
    @[]
    @Int
    (pure 4)
    "four"
    (genListOf $ pure 5)
    "list of fives"
    (genListOf $ pure 6)
    "list of sixes"
    ((*) <$> genValid)
    "factorisations"
    (pure $ \a -> [a])
    "singletonisation"
    (pure $ \a -> [a])
    "singletonisation"
    (pure $ pure (+ 1))
    "increment in list"