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da2a3fc7a8
This fixes a lot of unnecessary exports in the specs, removes a couple otiose imports (comonads and semigroups are provided by base, I beleive), and removes a duplicated function.
88 lines
3.1 KiB
Haskell
88 lines
3.1 KiB
Haskell
module Data.Functor.Classes.Generic.Spec (spec) where
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import Data.Functor.Classes.Generic
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import Data.Functor.Listable
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import GHC.Generics
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import Test.Hspec
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import Test.Hspec.LeanCheck
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spec :: Spec
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spec = parallel $ do
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describe "Eq1" $ do
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describe "genericLiftEq" $ do
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prop "equivalent to derived (==) for product types" $
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\ a b -> genericLiftEq (==) a b `shouldBe` a == (b :: Product Int)
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prop "equivalent to derived (==) for sum types" $
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\ a b -> genericLiftEq (==) a b `shouldBe` a == (b :: Sum Int)
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prop "equivalent to derived (==) for recursive types" $
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\ a b -> genericLiftEq (==) a b `shouldBe` a == (b :: Tree Int)
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describe "Ord1" $ do
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describe "genericLiftCompare" $ do
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prop "equivalent to derived compare for product types" $
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\ a b -> genericLiftCompare compare a b `shouldBe` compare a (b :: Product Int)
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prop "equivalent to derived compare for sum types" $
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\ a b -> genericLiftCompare compare a b `shouldBe` compare a (b :: Sum Int)
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prop "equivalent to derived compare for recursive types" $
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\ a b -> genericLiftCompare compare a b `shouldBe` compare a (b :: Tree Int)
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describe "Show1" $ do
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describe "genericLiftShowsPrec" $ do
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prop "equivalent to derived showsPrec for product types" $
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\ a -> genericLiftShowsPrec showsPrec showList 0 a "" `shouldBe` showsPrec 0 (a :: Product Int) ""
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prop "equivalent to derived showsPrec for sum types" $
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\ a -> genericLiftShowsPrec showsPrec showList 0 a "" `shouldBe` showsPrec 0 (a :: Sum Int) ""
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prop "equivalent to derived showsPrec for recursive types" $
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\ a -> genericLiftShowsPrec showsPrec showList 0 a "" `shouldBe` showsPrec 0 (a :: Tree Int) ""
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prop "equivalent to derived showsPrec for record selectors" $
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\ a -> genericLiftShowsPrecWithOptions defaultGShow1Options { optionsUseRecordSyntax = True } showsPrec showList 0 a "" `shouldBe` showsPrec 0 (a :: Record Int) ""
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prop "equivalent to derived showsPrec for infix constructors" $
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\ a -> genericLiftShowsPrec showsPrec showList 0 a "" `shouldBe` showsPrec 0 (a :: Infix Int) ""
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data Product a = Product a a a
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deriving (Eq, Generic1, Ord, Show)
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instance Listable a => Listable (Product a) where
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tiers = cons3 Product
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data Sum a = Sum1 a | Sum2 a | Sum3 a
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deriving (Eq, Generic1, Ord, Show)
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instance Listable a => Listable (Sum a) where
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tiers = cons1 Sum1 \/ cons1 Sum2 \/ cons1 Sum3
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data Tree a = Leaf a | Branch [Tree a]
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deriving (Eq, Generic1, Ord, Show)
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instance Listable a => Listable (Tree a) where
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tiers = cons1 Leaf \/ cons1 Branch
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instance Eq1 Tree where liftEq = genericLiftEq
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instance Ord1 Tree where liftCompare = genericLiftCompare
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instance Show1 Tree where liftShowsPrec = genericLiftShowsPrec
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data Record a = Record { recordSelector1 :: a, recordSelector2 :: a, recordSelector3 :: a }
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deriving (Eq, Generic1, Ord, Show)
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instance Listable a => Listable (Record a) where
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tiers = cons3 Record
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data Infix a = a :<>: a
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deriving (Eq, Generic1, Ord, Show)
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instance Listable a => Listable (Infix a) where
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tiers = cons2 (:<>:)
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