Sarah Vaupel
72f5a9fb37
TODOs left: reimplement clean and help, sync static,well-known and assets between services
18 lines
521 B
Haskell
18 lines
521 B
Haskell
-- SPDX-FileCopyrightText: 2022 Gregor Kleen <gregor.kleen@ifi.lmu.de>
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--
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-- SPDX-License-Identifier: AGPL-3.0-or-later
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module Test.QuickCheck.Classes.Hashable
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( hashableLaws
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) where
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import ClassyPrelude
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import Test.QuickCheck
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import Test.QuickCheck.Classes
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import Data.Proxy
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hashableLaws :: forall a. (Arbitrary a, Hashable a, Eq a, Show a) => Proxy a -> Laws
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hashableLaws _ = Laws "Hashable"
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[ ("Injectivity", property $ \(a :: a) (a' :: a) (s :: Int) -> hashWithSalt s a /= hashWithSalt s a' ==> a /= a')
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]
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