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{-|
Module: Spec.Foreign.PtrSpec
Copyright: (C) 2014-2017 Ryan Scott
License: BSD-style (see the file LICENSE)
Maintainer: Ryan Scott
Stability: Provisional
Portability: GHC
@hspec@ tests for pointer data types.
-}
module Spec.Foreign.PtrSpec (main, spec) where
import Data.Proxy.Compat (Proxy(..))
import Foreign.ForeignPtr (newForeignPtr_)
import Foreign.Ptr (FunPtr, IntPtr, Ptr, WordPtr)
import Instances.Foreign.Ptr ()
import Prelude ()
import Prelude.Compat
import Spec.Utils (matchesTextShowSpec, prop_matchesTextShow)
import Test.Hspec (Spec, describe, hspec, parallel)
import Test.Hspec.QuickCheck (prop)
import Test.QuickCheck (Property, ioProperty)
main :: IO ()
main = hspec spec
spec :: Spec
spec = parallel $ do
describe "Ptr Int" $
matchesTextShowSpec (Proxy :: Proxy (Ptr Int))
describe "FunPtr Int" $
matchesTextShowSpec (Proxy :: Proxy (FunPtr Int))
describe "IntPtr" $
matchesTextShowSpec (Proxy :: Proxy IntPtr)
describe "WordPtr" $
matchesTextShowSpec (Proxy :: Proxy WordPtr)
describe "ForeignPtr" $
prop "TextShow instance" prop_showForeignPtr
-- | Verifies the 'Show' instance for 'ForeignPtr' is accurate.
prop_showForeignPtr :: Int -> Ptr Int -> Property
prop_showForeignPtr p ptr = ioProperty $ do
fptr <- newForeignPtr_ ptr
pure $ prop_matchesTextShow p fptr
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