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-rw-r--r--src/Utility/QuickCheck.hs53
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diff --git a/src/Utility/QuickCheck.hs b/src/Utility/QuickCheck.hs
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-{- QuickCheck with additional instances
- -
- - Copyright 2012-2014 Joey Hess <id@joeyh.name>
- -
- - License: BSD-2-clause
- -}
-
-{-# OPTIONS_GHC -fno-warn-orphans #-}
-{-# LANGUAGE TypeSynonymInstances #-}
-
-module Utility.QuickCheck
- ( module X
- , module Utility.QuickCheck
- ) where
-
-import Test.QuickCheck as X
-import Data.Time.Clock.POSIX
-import System.Posix.Types
-import qualified Data.Map as M
-import qualified Data.Set as S
-import Control.Applicative
-import Prelude
-
-instance (Arbitrary k, Arbitrary v, Eq k, Ord k) => Arbitrary (M.Map k v) where
- arbitrary = M.fromList <$> arbitrary
-
-instance (Arbitrary v, Eq v, Ord v) => Arbitrary (S.Set v) where
- arbitrary = S.fromList <$> arbitrary
-
-{- Times before the epoch are excluded. -}
-instance Arbitrary POSIXTime where
- arbitrary = fromInteger <$> nonNegative arbitrarySizedIntegral
-
-instance Arbitrary EpochTime where
- arbitrary = fromInteger <$> nonNegative arbitrarySizedIntegral
-
-{- Pids are never negative, or 0. -}
-instance Arbitrary ProcessID where
- arbitrary = arbitrarySizedBoundedIntegral `suchThat` (> 0)
-
-{- Inodes are never negative. -}
-instance Arbitrary FileID where
- arbitrary = nonNegative arbitrarySizedIntegral
-
-{- File sizes are never negative. -}
-instance Arbitrary FileOffset where
- arbitrary = nonNegative arbitrarySizedIntegral
-
-nonNegative :: (Num a, Ord a) => Gen a -> Gen a
-nonNegative g = g `suchThat` (>= 0)
-
-positive :: (Num a, Ord a) => Gen a -> Gen a
-positive g = g `suchThat` (> 0)