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{-# LANGUAGE CPP #-}
{-# LANGUAGE StandaloneDeriving #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-|
Module: Instances.GHC.Event
Copyright: (C) 2014-2017 Ryan Scott
License: BSD-style (see the file LICENSE)
Maintainer: Ryan Scott
Stability: Provisional
Portability: GHC
'Arbitrary' instances for data types in the "GHC.Event" module.
-}
module Instances.GHC.Event () where
#if !defined(__GHCJS__) && !defined(mingw32_HOST_OS)
import GHC.Event (Event, evtRead, evtWrite)
import Prelude ()
import Prelude.Compat
import Test.QuickCheck (Arbitrary(..), oneof)
# if MIN_VERSION_base(4,8,1)
import GHC.Event (Lifetime(..))
import Test.QuickCheck (arbitraryBoundedEnum)
# endif
instance Arbitrary Event where
arbitrary = oneof $ map pure [evtRead, evtWrite]
-- TODO: instance Arbitrary FdKey
# if MIN_VERSION_base(4,8,1)
deriving instance Bounded Lifetime
deriving instance Enum Lifetime
instance Arbitrary Lifetime where
arbitrary = arbitraryBoundedEnum
# endif
#endif
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