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{-# LANGUAGE OverloadedStrings #-}
module Padding (tests) where
import qualified Data.ByteString as B
import Imports
import Crypto.Data.Padding
cases =
[ ("abcdef", 8, "abcdef\x02\x02")
, ("abcd", 4, "abcd\x04\x04\x04\x04")
, ("xyze", 5, "xyze\x01")
]
zeroCases =
[ ("", 4, "\NUL\NUL\NUL\NUL", Nothing)
, ("abcdef", 8, "abcdef\NUL\NUL", Nothing)
, ("0123456789abcdef", 16, "0123456789abcdef", Just "0123456789abcdef")
]
-- instance Arbitrary where
testPad :: Int -> (B.ByteString, Int, B.ByteString) -> TestTree
testPad n (inp, sz, padded) =
testCase (show n) $
propertyHoldCase
[ eqTest "padded" padded (pad (PKCS7 sz) inp)
, eqTest "unpadded" (Just inp) (unpad (PKCS7 sz) padded)
]
testZeroPad
:: Int -> (B.ByteString, Int, B.ByteString, Maybe B.ByteString) -> TestTree
testZeroPad n (inp, sz, padded, unpadded) =
testCase (show n) $
propertyHoldCase
[ eqTest "padded" padded (pad (ZERO sz) inp)
, eqTest "unpadded" unpadded (unpad (ZERO sz) padded)
]
tests =
testGroup
"Padding"
[ testGroup "Cases" $ zipWith testPad [1 ..] cases
, testGroup "ZeroCases" $ zipWith testZeroPad [1 ..] zeroCases
]
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