mirror of
https://github.com/jtdaugherty/brick.git
synced 2024-11-29 10:54:48 +03:00
117 lines
3.8 KiB
Haskell
117 lines
3.8 KiB
Haskell
{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE TypeFamilies #-}
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import Control.Applicative
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import Data.Bool (bool)
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import Data.Traversable (sequenceA)
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import System.Exit (exitFailure, exitSuccess)
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import Data.IMap (IMap, Run(Run))
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import Data.IntMap (IntMap)
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import Test.QuickCheck
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import qualified Data.IMap as IMap
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import qualified Data.IntMap as IntMap
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import qualified List
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import qualified Render
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instance Arbitrary v => Arbitrary (Run v) where
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arbitrary = liftA2 (\(Positive n) -> Run n) arbitrary arbitrary
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instance Arbitrary v => Arbitrary (IMap v) where
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arbitrary = IMap.fromList <$> arbitrary
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instance (a ~ Ordering, Show b) => Show (a -> b) where
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show f = show [f x | x <- [minBound .. maxBound]]
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lower :: IMap v -> IntMap v
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lower m = IntMap.fromDistinctAscList
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[ (base+offset, v)
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| (base, Run n v) <- IMap.unsafeToAscList m
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, offset <- [0..n-1]
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]
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raise :: Eq v => IntMap v -> IMap v
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raise = IMap.fromList . rle . map singletonRun . IntMap.toAscList where
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singletonRun (k, v) = (k, Run 1 v)
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rle ((k, Run n v):(k', Run n' v'):kvs)
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| k+n == k' && v == v' = rle ((k, Run (n+n') v):kvs)
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rle (kv:kvs) = kv:rle kvs
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rle [] = []
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lowerRun :: Int -> Run v -> IntMap v
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lowerRun k r = IntMap.fromAscList [(k+offset, IMap.val r) | offset <- [0..IMap.len r-1]]
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type O = Ordering
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type I = IMap Ordering
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-- These next two probably have overflow bugs that QuickCheck can't reasonably
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-- notice. Hopefully they don't come up in real use cases...
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prop_raiseLowerFaithful :: IntMap O -> Bool
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prop_raiseLowerFaithful m = m == lower (raise m)
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prop_equalityReflexive :: I -> Bool
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prop_equalityReflexive m = m == raise (lower m)
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prop_equality :: I -> I -> Bool
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prop_equality l r = (l == r) == (lower l == lower r)
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prop_compare :: I -> I -> Bool
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prop_compare l r = compare l r == compare (lower l) (lower r)
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prop_applicativeIdentity :: I -> Bool
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prop_applicativeIdentity v = (id <$> v) == v
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prop_applicativeComposition :: IMap (O -> O) -> IMap (O -> O) -> IMap O -> Bool
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prop_applicativeComposition u v w = ((.) <$> u <*> v <*> w) == (u <*> (v <*> w))
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prop_applicativeHomomorphism :: (O -> O) -> O -> Bool
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prop_applicativeHomomorphism f x = (f <$> pure x :: I) == pure (f x)
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prop_applicativeInterchange :: IMap (O -> O) -> O -> Bool
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prop_applicativeInterchange u y = (u <*> pure y) == (($ y) <$> u)
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prop_empty :: Bool
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prop_empty = lower (IMap.empty :: I) == IntMap.empty
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prop_singleton :: Int -> Run O -> Bool
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prop_singleton k r = lower (IMap.singleton k r) == lowerRun k r
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prop_insert :: Int -> Run O -> I -> Bool
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prop_insert k r m = lower (IMap.insert k r m) == IntMap.union (lowerRun k r) (lower m)
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prop_delete :: Int -> Run () -> I -> Bool
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prop_delete k r m = lower (IMap.delete k r m) == lower m IntMap.\\ lowerRun k r
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prop_splitLE :: Int -> I -> Bool
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prop_splitLE k m = (lower le, lower gt) == (le', gt') where
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(le, gt) = IMap.splitLE k m
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(lt, eq, gt') = IntMap.splitLookup k (lower m)
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le' = maybe id (IntMap.insert k) eq lt
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prop_intersectionWith :: (O -> O -> O) -> I -> I -> Bool
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prop_intersectionWith f l r = lower (IMap.intersectionWith f l r) == IntMap.intersectionWith f (lower l) (lower r)
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prop_addToKeys :: Int -> I -> Bool
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prop_addToKeys n m = lower (IMap.addToKeys n m) == IntMap.mapKeysMonotonic (n+) (lower m)
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prop_lookup :: Int -> I -> Bool
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prop_lookup k m = IMap.lookup k m == IntMap.lookup k (lower m)
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prop_restrict :: Int -> Run () -> I -> Bool
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prop_restrict k r m = lower (IMap.restrict k r m) == IntMap.intersection (lower m) (lowerRun k r)
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prop_mapMaybe :: (O -> Maybe O) -> I -> Bool
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prop_mapMaybe f m = lower (IMap.mapMaybe f m) == IntMap.mapMaybe f (lower m)
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prop_null :: I -> Bool
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prop_null m = IMap.null m == IntMap.null (lower m)
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return []
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main :: IO ()
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main =
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(all id <$> sequenceA [$quickCheckAll, List.main, Render.main])
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>>= bool exitFailure exitSuccess
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