6266c5d32f
Rename my //users directory and all places that refer to glittershark to grfn, including nix references and documentation. This may require some extra attention inside of gerrit's database after it lands to allow me to actually push things. Change-Id: I4728b7ec2c60024392c1c1fa6e0d4a59b3e266fa Reviewed-on: https://cl.tvl.fyi/c/depot/+/2933 Tested-by: BuildkiteCI Reviewed-by: tazjin <mail@tazj.in> Reviewed-by: lukegb <lukegb@tvl.fyi> Reviewed-by: glittershark <grfn@gws.fyi>
42 lines
1.3 KiB
Haskell
42 lines
1.3 KiB
Haskell
{-# LANGUAGE UndecidableInstances #-}
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module Xanthous.Util.QuickCheck
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( functionShow
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, FunctionShow(..)
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, functionJSON
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, FunctionJSON(..)
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, genericArbitrary
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, GenericArbitrary(..)
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) where
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--------------------------------------------------------------------------------
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import Xanthous.Prelude
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import Test.QuickCheck
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import Test.QuickCheck.Function
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import Test.QuickCheck.Instances.ByteString ()
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import Test.QuickCheck.Arbitrary.Generic
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import Data.Aeson
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import GHC.Generics (Rep)
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--------------------------------------------------------------------------------
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newtype FunctionShow a = FunctionShow a
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deriving newtype (Show, Read)
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instance (Show a, Read a) => Function (FunctionShow a) where
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function = functionShow
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functionJSON :: (ToJSON a, FromJSON a) => (a -> c) -> a :-> c
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functionJSON = functionMap encode (headEx . decode)
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newtype FunctionJSON a = FunctionJSON a
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deriving newtype (ToJSON, FromJSON)
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instance (ToJSON a, FromJSON a) => Function (FunctionJSON a) where
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function = functionJSON
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--------------------------------------------------------------------------------
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newtype GenericArbitrary a = GenericArbitrary a
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deriving newtype Generic
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instance (Generic a, GArbitrary rep, Rep a ~ rep)
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=> Arbitrary (GenericArbitrary a) where
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arbitrary = genericArbitrary
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