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import Test.Framework (defaultMain, testGroup)
import Test.Framework.Providers.HUnit

import Test.HUnit

import Codec.Encryption.OpenPGP.ASCIIArmor (armor, decodeArmor)
import Codec.Encryption.OpenPGP.ASCIIArmor.Types

import Data.ByteString (ByteString)
import qualified Data.ByteString as B
import qualified Data.ByteString.Char8 as BC8
import Data.Digest.CRC24 (crc24)
import Data.Word (Word32)

testCRC24 :: ByteString -> Word32 -> Assertion
testCRC24 bs crc = assertEqual "crc24" crc (crc24 bs)

testArmorDecode :: FilePath -> FilePath -> Assertion
testArmorDecode fp target = do
    bs <- B.readFile $ "tests/data/" ++ fp
    tbs <- B.readFile $ "tests/data/" ++ target
    case decodeArmor bs of
        Left e -> assertFailure $ "Decode failed (" ++ e ++ ") on " ++ fp
        Right (Armor at hdrs pl) -> do assertEqual ("for " ++ fp) tbs pl

testArmorEncode :: FilePath -> FilePath -> Assertion
testArmorEncode fp target = do
    bs <- B.readFile $ "tests/data/" ++ fp
    tbs <- B.readFile $ "tests/data/" ++ target
    assertEqual ("literaldata") (armor (Armor ArmorMessage [("Version","OpenPrivacy 0.99")] bs)) tbs

tests = [
   testGroup "CRC24" [
      testCase "CRC24: A" (testCRC24 (BC8.pack "A") 16680698)
    , testCase "CRC24: Haskell" (testCRC24 (BC8.pack "Haskell") 15612750)
    , testCase "CRC24: hOpenPGP and friends" (testCRC24 (BC8.pack "hOpenPGP and friends") 11940960)
    ]
 , testGroup "ASCII armor" [
      testCase "Decode sample armor" (testArmorDecode "msg1.asc" "msg1.gpg")
    , testCase "Encode sample armor" (testArmorEncode "msg1.gpg" "msg1.asc")
    ]
 ]

main = defaultMain tests