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23 lines
856 B
Haskell
23 lines
856 B
Haskell
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{-# LANGUAGE UndecidableInstances #-}
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module Control.Monad.MemoizeSpec (spec) where
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import Control.Monad.MemoizationSpecDefinition
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import Control.Monad.Memoize
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import Hasura.Prelude
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import Test.Hspec
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-- We need to add a couple of extra parameters, 'k' and 'v', to align with the
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-- shape of a memoizer as understood by 'Memoizer'.
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newtype MemoizeWithExtraParamsT k v m a = MemoizeWithExtraParamsT {unMemoizeWithExtraParamsT :: MemoizeT m a}
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deriving newtype (Functor, Applicative, Monad, MonadTrans)
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instance Memoizer MemoizeWithExtraParamsT where
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runMemoizer = runMemoizeT . unMemoizeWithExtraParamsT
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memoize name key = MemoizeWithExtraParamsT . memoizeOn name key . unMemoizeWithExtraParamsT
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deriving newtype instance MonadState s m => MonadState s (MemoizeWithExtraParamsT k v m)
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spec :: Spec
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spec = memoizationSpec @MemoizeWithExtraParamsT
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