{-
 - Copyright : (c) 2007 Magnus Therning
 - License   : BSD3
 -}

module Main
    where

import Test.HUnit
import Control.Monad
import System.Exit
import Data.Maybe

import Codec.Binary.DataEncoding
import qualified Codec.Binary.Yenc as Yenc

-- {{{1 buildTestList
-- builds a list of successful tests based on a tuple (suite, description,
-- encoded data, decoded data, codec)
buildTestList td = TestList $ concat
    [[ TestLabel (suite ++ " encode " ++ desc) (enc ~=? (encode codec dec))
     , TestLabel (suite ++ " decode " ++ desc) (dec ~=? (fromJust $ decode codec $ enc))] 
        | (suite, desc, enc, dec, codec) <- td ]

-- {{{1 uuencode tests
uuTestData =
    [ ("uu", "empty", "", [], uu)
    , ("uu", "\0", "``", [0], uu)
    , ("uu", "\255", "_P", [255], uu)
    , ("uu", "Example", "17AA;7!L90", [69,120,97,109,112,108,101], uu)
    ]
uuTests = buildTestList uuTestData

uuTests2 = test
    [ "chop . encode Example" ~: ["'17AA;7!L90"] ~=? (chop uu 61 . encode uu) [69,120,97,109,112,108,101]
    , "decode . unchop Example" ~: [69,120,97,109,112,108,101] ~=? fromJust ((decode uu . unchop uu) ["'17AA;7!L90"])
    ]

uuTestsFail = test
    [ "uu decode short" ~: Nothing ~=? decode uu "A"
    , "uu decode' short" ~: [Nothing] ~=? decode' uu "A"
    , "uu decode illegal" ~: Nothing ~=? decode uu "aa"
    , "uu decode' illegal" ~: [Nothing] ~=? decode' uu "aa"
    ]

-- {{{1 base85 tests
base85TestData =
    [ ("base85", "empty", "", [], base85)
    , ("base85", "f", "Ac", [102], base85)
    , ("base85", "fo", "Ao@", [102,111], base85)
    , ("base85", "foo", "AoDS", [102,111,111], base85)
    , ("base85", "foob", "AoDTs", [102,111,111,98], base85)
    , ("base85", "fooba", "AoDTs@/", [102,111,111,98,97], base85)
    , ("base85", "foobar", "AoDTs@<)", [102,111,111,98,97,114], base85)
    , ("base85", "\0", "!!", [0], base85)
    , ("base85", "foob\0\0\0\0ar", "AoDTszEW", [102,111,111,98,0,0,0,0,114], base85)
    , ("base85", "Example", "7<i6XE,9(", [69,120,97,109,112,108,101], base85)
    ]
base85Tests = buildTestList base85TestData

base85TestsFail = test
    [ "base85 decode short" ~: Nothing ~=? decode base85 "A"
    , "base85 decode' short" ~: [Nothing] ~=? decode' base85 "A"
    , "base85 decode illegal" ~: Nothing ~=? decode base85 "!z"
    , "base85 decode' illegal" ~: [Nothing] ~=? decode' base85 "!z"
    ]

-- {{{1 base64 tests
base64TestData =
    [ ("base64", "empty", "", [], base64)
    , ("base64", "f", "Zg==", [102], base64)
    , ("base64", "fo", "Zm8=", [102,111], base64)
    , ("base64", "foo", "Zm9v", [102,111,111], base64)
    , ("base64", "foob", "Zm9vYg==", [102,111,111,98], base64)
    , ("base64", "fooba", "Zm9vYmE=", [102,111,111,98,97], base64)
    , ("base64", "foobar", "Zm9vYmFy", [102,111,111,98,97,114], base64)
    , ("base64", "\0", "AA==", [0], base64)
    , ("base64", "\255", "/w==", [255], base64)
    , ("base64", "Example", "RXhhbXBsZQ==", [69,120,97,109,112,108,101], base64)
    ]
base64Tests = buildTestList base64TestData

base64TestsFail = test
    [ "base64 decode short" ~: Nothing ~=? decode base64 "A"
    , "base64 decode' short" ~: [Nothing] ~=? decode' base64 "A"
    , "base64 decode illegal" ~: Nothing ~=? decode base64 "!!"
    , "base64 decode' illegal" ~: [Nothing] ~=? decode' base64 "!!"
    ]

-- {{{1 base64url tests
base64UrlTestData =
    [ ("base64url", "empty", "", [], base64Url)
    , ("base64url", "\0", "AA==", [0], base64Url)
    , ("base64url", "\255", "_w==", [255], base64Url)
    , ("base64url", "Example", "RXhhbXBsZQ==", [69,120,97,109,112,108,101], base64Url)
    ]
base64UrlTests = buildTestList base64UrlTestData

-- {{{1 base32 tests
base32TestData =
    [ ("base32", "empty", "", [], base32)
    , ("base32", "f", "MY======", [102], base32)
    , ("base32", "fo", "MZXQ====", [102,111], base32)
    , ("base32", "foo", "MZXW6===", [102,111,111], base32)
    , ("base32", "foob", "MZXW6YQ=", [102,111,111,98], base32)
    , ("base32", "fooba", "MZXW6YTB", [102,111,111,98,97], base32)
    , ("base32", "foobar", "MZXW6YTBOI======", [102,111,111,98,97,114], base32)
    ]
base32Tests = buildTestList base32TestData

base32TestsFail = test
    [ "base32 decode short" ~: Nothing ~=? decode base32 "A"
    , "base32 decode' short" ~: [Nothing] ~=? decode' base32 "A"
    , "base32 decode illegal" ~: Nothing ~=? decode base32 "gh"
    , "base32 decode' illegal" ~: [Nothing] ~=? decode' base32 "gh"
    ]

-- {{{1 base32hex tests
base32HexTestData =
    [ ("base32hex", "empty", "", [], base32Hex)
    , ("base32hex", "f", "CO======", [102], base32Hex)
    , ("base32hex", "fo", "CPNG====", [102,111], base32Hex)
    , ("base32hex", "foo", "CPNMU===", [102,111,111], base32Hex)
    , ("base32hex", "foob", "CPNMUOG=", [102,111,111,98], base32Hex)
    , ("base32hex", "fooba", "CPNMUOJ1", [102,111,111,98,97], base32Hex)
    , ("base32hex", "foobar", "CPNMUOJ1E8======", [102,111,111,98,97,114], base32Hex)
    ]
base32HexTests = buildTestList base32HexTestData

base32HexTestsFail = test
    [ "base32hex decode short" ~: Nothing ~=? decode base32Hex "A"
    , "base32hex decode' short" ~: [Nothing] ~=? decode' base32Hex "A"
    , "base32hex decode illegal" ~: Nothing ~=? decode base32Hex "gh"
    , "base32hex decode' illegal" ~: [Nothing] ~=? decode' base32Hex "gh"
    ]

-- {{{1 base16 (hex)
base16TestData =
    [ ("base16", "empty", "", [], base16)
    , ("base16", "f", "66", [102], base16)
    , ("base16", "fo", "666F", [102,111], base16)
    , ("base16", "foo", "666F6F", [102,111,111], base16)
    , ("base16", "foob", "666F6F62", [102,111,111,98], base16)
    , ("base16", "fooba", "666F6F6261", [102,111,111,98,97], base16)
    , ("base16", "foobar", "666F6F626172", [102,111,111,98,97,114], base16)
    ]
base16Tests = buildTestList base16TestData

base16TestsFail = test
    [ "base16 decode short" ~: Nothing ~=? decode base16 "A"
    , "base16 decode' short" ~: [Nothing] ~=? decode' base16 "A"
    , "base16 decode illegal" ~: Nothing ~=? decode base16 "GH"
    , "base16 decode' illegal" ~: [Nothing] ~=? decode' base16 "GH"
    ]

-- {{{1 yEncoding
yencTests = test
    [ "yEnc encode empty" ~: [] ~=? Yenc.encode []
    , "yEnc decode empty" ~: Just [] ~=? Yenc.decode []
    , "yEnc encode 'f'" ~: [0x90] ~=? Yenc.encode [0x66]
    , "yEnc decode enc('f')" ~: Just [0x66] ~=? Yenc.decode [0x90]
    , "yEnc encode 'foobar'" ~: [0x90, 0x99, 0x99, 0x8c, 0x8b, 0x9c] ~=? Yenc.encode [0x66, 0x6f, 0x6f, 0x62, 0x61, 0x72]
    , "yEnc decode enc('foobar')" ~: Just [0x66, 0x6f, 0x6f, 0x62, 0x61, 0x72] ~=? Yenc.decode [0x90, 0x99, 0x99, 0x8c, 0x8b, 0x9c]
    , "yEnc encode [0xd6, 0xd7]" ~: [0x3d, 0x40, 0x01] ~=? Yenc.encode [0xd6, 0xd7]
    , "yEnc decode enc([0xd6, 0xd7])" ~:  Just [0xd6, 0xd7] ~=? Yenc.decode [0x3d, 0x40, 0x01]
    , "yEnc encode criticals" ~: [0x3d, 0x40, 0x3d, 0x4a, 0x3d, 0x4d, 0x3d, 0x7d] ~=? Yenc.encode [0xd6, 0xe0, 0xe3, 0x13]
    , "yEnc decode criticals" ~:  Just [0xd6, 0xe0, 0xe3, 0x13] ~=? Yenc.decode [0x3d, 0x40, 0x3d, 0x4a, 0x3d, 0x4d, 0x3d, 0x7d]
    , "yEnc chop" ~: [[0x3d, 0x40], [0x01, 0x3d, 0x4a]] ~=? Yenc.chop 2 [0x3d, 0x40, 0x01, 0x3d, 0x4a]
    ]

-- {{{1 test list and main
testList = TestList
    [ uuTests, uuTests2, uuTestsFail
    , base85Tests, base85TestsFail
    , base64Tests, base64TestsFail
    , base64UrlTests
    , base32Tests, base32TestsFail
    , base32HexTests, base32HexTestsFail
    , base16Tests,  base16TestsFail
    , yencTests
    ]

main :: IO ()
main = do
    counts <- runTestTT testList
    when ((errors counts, failures counts) /= (0, 0)) $ exitWith (ExitFailure 1)