{-# LANGUAGE ScopedTypeVariables #-}
{-|
Module: OrdSpec
Copyright: (C) 2015-2017 Ryan Scott
License: BSD-style (see the file LICENSE)
Maintainer: Ryan Scott
Portability: Template Haskell
@hspec@ tests for derived 'Ord', 'Ord1', and 'Ord2' instances.
-}
module OrdSpec where
import Data.Functor.Classes
import Prelude ()
import Prelude.Compat
import Test.Hspec
import Test.Hspec.QuickCheck (prop)
import Test.QuickCheck (Arbitrary)
import Types.EqOrd ()
-------------------------------------------------------------------------------
prop_Ord :: (Ord a, Ord (f a), Ord1 f) => f a -> f a -> Bool
prop_Ord x y = compare x y == compare1 x y
ordSpec :: forall proxy f a. (Arbitrary (f a), Show (f a),
Ord a, Ord (f a), Ord1 f)
=> proxy (f a) -> Spec
ordSpec _ = prop "has a valid Ord1 instance" (prop_Ord :: f a -> f a -> Bool)
-------------------------------------------------------------------------------
main :: IO ()
main = hspec spec
spec :: Spec
spec = pure ()