2010-08-17 01:33:18 +04:00
|
|
|
module Main where
|
|
|
|
|
|
|
|
import Data.Binary ( encode )
|
|
|
|
import Data.Binary.Get
|
|
|
|
import Data.Binary.Put
|
|
|
|
|
2010-08-17 23:30:23 +04:00
|
|
|
import Data.Bits
|
2010-08-17 01:33:18 +04:00
|
|
|
import Data.Word
|
|
|
|
import System.Random
|
|
|
|
|
2010-08-24 22:07:59 +04:00
|
|
|
import BitsGet as BG
|
|
|
|
import qualified BitsPut as BP
|
2010-08-17 01:33:18 +04:00
|
|
|
|
|
|
|
import Test.QuickCheck
|
|
|
|
|
2010-08-17 23:30:23 +04:00
|
|
|
main = do
|
2010-08-24 22:07:59 +04:00
|
|
|
quickCheck prop_Bools
|
|
|
|
quickCheck prop_Word8_putget
|
2010-08-17 23:30:23 +04:00
|
|
|
|
2010-08-24 22:15:29 +04:00
|
|
|
-- these tests use the R structure
|
|
|
|
--
|
|
|
|
-- quickCheck prop_Word16be_with_offset
|
|
|
|
-- quickCheck prop_Word16be_list
|
|
|
|
-- quickCheck prop_SimpleCase
|
|
|
|
-- quickCheck prop_Word32_from_2_Word16
|
|
|
|
-- quickCheck prop_Word32_from_Word8_and_Word16
|
|
|
|
|
2010-08-24 22:07:59 +04:00
|
|
|
prop_Word8_putget :: [Word8] -> Property
|
|
|
|
prop_Word8_putget ws = length ws <= fromIntegral (maxBound :: Word8) ==>
|
|
|
|
-- write all word8s with as many bits as it's required
|
2010-08-24 22:14:10 +04:00
|
|
|
let p = mapM_ (\v -> BP.putWord8 (bitreq v) v) ws
|
2010-08-24 22:07:59 +04:00
|
|
|
g = mapM BG.getWord8 bitlist
|
|
|
|
lbs = runPut (BP.runBitPut p)
|
|
|
|
Right ws' = runGet (runBitGet g) lbs
|
|
|
|
in ws == ws'
|
|
|
|
where
|
|
|
|
bitlist = map bitreq ws
|
|
|
|
|
|
|
|
-- number of bits required to write 'v'
|
|
|
|
bitreq v = fromIntegral . head $ [ req | (req, top) <- bittable, v <= top ]
|
|
|
|
bittable = [ (fromIntegral x, (1 `shiftL` x) - 1) | x <- [1..8] ]
|
|
|
|
|
|
|
|
prop_Bools :: [Bool] -> Property
|
|
|
|
prop_Bools bs = property $
|
|
|
|
let p = sequence . replicate (length bs) $ BG.getBool
|
|
|
|
Right bs' = runGet (BG.runBitGet p) lbs
|
|
|
|
in bs == bs'
|
|
|
|
where lbs = runPut $ BP.runBitPut (mapM_ BP.putBool bs)
|
|
|
|
|
2010-08-24 22:15:29 +04:00
|
|
|
|
|
|
|
{-
|
|
|
|
prop_SimpleCase :: Word16 -> Property
|
|
|
|
prop_SimpleCase w = w < 0x8000 ==>
|
|
|
|
let p = RMap RBool $ \v -> case v of
|
|
|
|
True -> RWord16be 15
|
|
|
|
False -> RMapPure
|
|
|
|
(RWord8 7 `RNextTo` RWord8 8)
|
|
|
|
(\(msb:*:lsb)-> (fromIntegral msb `shiftL` 8) .|. fromIntegral lsb)
|
|
|
|
w' = runGet (get p) lbs
|
|
|
|
in w == w'
|
|
|
|
where
|
|
|
|
lbs = runPut (putWord16be w)
|
|
|
|
|
2010-08-17 01:33:18 +04:00
|
|
|
prop_Word16be_with_offset :: Word16 -> Property
|
|
|
|
prop_Word16be_with_offset w = w < 0x8000 ==>
|
|
|
|
let b :*: w' :*: w'' = runGet (get (RCheck RBool not "fail" `RNextTo` RWord16be 15 `RNextTo` RWord16be 16)) lbs
|
|
|
|
in w == w' && w == w''
|
|
|
|
where
|
|
|
|
lbs = runPut (putWord16be w >> putWord16be w)
|
|
|
|
|
2010-08-17 23:30:23 +04:00
|
|
|
prop_Word16be_list :: Word8 -> [Word16] -> Property
|
|
|
|
prop_Word16be_list w ws = property $
|
|
|
|
let p = RWord8 8 `RNextTo` RList (length ws) (RWord16be 16) :: R (T Word8 [Word16])
|
|
|
|
w' :*: ws' = runGet (get p) lbs :: T Word8 [Word16]
|
|
|
|
in ws == ws' && w == w'
|
|
|
|
where
|
|
|
|
lbs = runPut (putWord8 w >> mapM_ putWord16be ws)
|
|
|
|
|
|
|
|
prop_Word32_from_Word8_and_Word16 :: Word8 -> Word16 -> Property
|
|
|
|
prop_Word32_from_Word8_and_Word16 w8 w16 = property $
|
|
|
|
let p = RWord32be 24
|
|
|
|
w' = runGet (get p) lbs
|
|
|
|
in w0 == w'
|
|
|
|
where
|
|
|
|
lbs = runPut (putWord8 w8 >> putWord16be w16)
|
|
|
|
w0 = ((fromIntegral w8) `shiftL` 16) .|. fromIntegral w16
|
|
|
|
|
|
|
|
prop_Word32_from_2_Word16 :: Word16 -> Word16 -> Property
|
|
|
|
prop_Word32_from_2_Word16 w1 w2 = property $
|
|
|
|
let p = RWord32be 32
|
|
|
|
w' = runGet (get p) lbs
|
|
|
|
in w0 == w'
|
|
|
|
where
|
|
|
|
lbs = encode w0
|
|
|
|
w0 = ((fromIntegral w1) `shiftL` 16) .|. fromIntegral w2
|
2010-08-24 22:15:29 +04:00
|
|
|
-}
|
2010-08-17 23:30:23 +04:00
|
|
|
|
2010-08-17 01:33:18 +04:00
|
|
|
instance Arbitrary Word8 where
|
|
|
|
arbitrary = choose (minBound, maxBound)
|
|
|
|
shrink 0 = []
|
|
|
|
shrink n = [ n - 1 ]
|
|
|
|
|
|
|
|
instance Arbitrary Word16 where
|
|
|
|
arbitrary = choose (minBound, maxBound)
|
|
|
|
shrink 0 = []
|
|
|
|
shrink n = [ n - 1000, n - 100, n - 10, n - 1 ]
|
|
|
|
|
|
|
|
instance Arbitrary Word32 where
|
|
|
|
arbitrary = choose (minBound, maxBound)
|
|
|
|
|
|
|
|
instance Arbitrary Word64 where
|
|
|
|
arbitrary = choose (minBound, maxBound)
|
|
|
|
|
|
|
|
|
|
|
|
integralRandomR :: (Integral a, RandomGen g) => (a,a) -> g -> (a,g)
|
|
|
|
integralRandomR (a,b) g = case randomR (fromIntegral a :: Integer,
|
|
|
|
fromIntegral b :: Integer) g of
|
|
|
|
(x,g) -> (fromIntegral x, g)
|
|
|
|
|
|
|
|
instance Random Word where
|
|
|
|
randomR = integralRandomR
|
|
|
|
random = randomR (minBound,maxBound)
|
|
|
|
|
|
|
|
instance Random Word8 where
|
|
|
|
randomR = integralRandomR
|
|
|
|
random = randomR (minBound,maxBound)
|
|
|
|
|
|
|
|
instance Random Word16 where
|
|
|
|
randomR = integralRandomR
|
|
|
|
random = randomR (minBound,maxBound)
|
|
|
|
|
|
|
|
instance Random Word32 where
|
|
|
|
randomR = integralRandomR
|
|
|
|
random = randomR (minBound,maxBound)
|
|
|
|
|
|
|
|
instance Random Word64 where
|
|
|
|
randomR = integralRandomR
|
|
|
|
random = randomR (minBound,maxBound)
|