hamming/test/Hamming/Word16Spec.hs

77 lines
2.0 KiB
Haskell

{-
hamming
Copyright (C) Jonathan Lamothe <jonathan@jlamothe.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public
License along with this program. If not, see
<https://www.gnu.org/licenses/>.
-}
module Hamming.Word16Spec (spec) where
import Data.Word (Word16)
import Hamming
import Test.Hspec (Spec, context, describe, it, shouldBe)
spec :: Spec
spec = describe "Word16" $ do
setCheckBitsSpec
isValidSpec
correctErrorsSpec
setCheckBitsSpec :: Spec
setCheckBitsSpec = describe "setCheckBits" $ mapM_
( \(desc, code, expected) -> context desc $ let
actual = setCheckBits code
in it ("should be " ++ show expected) $
actual `shouldBe` expected
)
[ ( "all zeroes", 0, 0 )
, ( "all ones", 0xffff, 0xffff )
, ( "no check bits", noChkBits, withChkBits )
, ( "bad check bits", badChkBits, withChkBits )
]
isValidSpec :: Spec
isValidSpec = describe "isValid" $ mapM_
( \(desc, code, expected) -> context desc $ let
actual = isValid code
in it ("should be " ++ show expected) $
actual `shouldBe` expected
)
[ ( "all zeroes", 0, True )
, ( "all ones", 0xffff, True )
, ( "valid", withChkBits, True )
, ( "no check bits", noChkBits, False )
, ( "bad check bits", badChkBits, False )
]
correctErrorsSpec :: Spec
correctErrorsSpec = describe "correctErrors" $
return ()
noChkBits :: Word16
noChkBits = 0x34c0
withChkBits :: Word16
withChkBits = 0x35c5
badChkBits :: Word16
badChkBits = 0x34d2
--jl