{-# LANGUAGE TemplateHaskell #-}
-- Copyright: (c) Magnus Therning, 2013
-- License: BSD3, found in the LICENSE file

module Codec.Binary.Base85Test where

import Codec.TestUtils
import qualified Codec.Binary.Base85 as B85

import qualified Data.ByteString as BS
import qualified Data.ByteString.Char8 as BSC
import Data.Word (Word8)

import Test.Tasty
import Test.Tasty.TH
import Test.Tasty.HUnit
import Test.Tasty.QuickCheck

case_enc_foobar :: IO ()
case_enc_foobar = do
    BS.empty @=? B85.encode BS.empty
    BSC.pack "Ac"       @=? B85.encode (BSC.pack "f")
    BSC.pack "Ao@"      @=? B85.encode (BSC.pack "fo")
    BSC.pack "AoDS"     @=? B85.encode (BSC.pack "foo")
    BSC.pack "AoDTs"    @=? B85.encode (BSC.pack "foob")
    BSC.pack "AoDTs@/"  @=? B85.encode (BSC.pack "fooba")
    BSC.pack "AoDTs@<)" @=? B85.encode (BSC.pack "foobar")

case_enc_specials :: IO ()
case_enc_specials = do
    -- all zero
    BSC.pack "z" @=? B85.encode (BS.pack [0,0,0,0])
    -- all space
    BSC.pack "y" @=? B85.encode (BS.pack [32,32,32,32])
    -- double special
    BSC.pack "yz" @=? B85.encode (BS.pack [32,32,32,32,0,0,0,0])

case_dec_foobar :: IO ()
case_dec_foobar = do
    -- foobar
    Right BS.empty            @=? B85.decode BS.empty
    Right (BSC.pack "f")      @=? B85.decode (BSC.pack "Ac")
    Right (BSC.pack "fo")     @=? B85.decode (BSC.pack "Ao@")
    Right (BSC.pack "foo")    @=? B85.decode (BSC.pack "AoDS")
    Right (BSC.pack "foob")   @=? B85.decode (BSC.pack "AoDTs")
    Right (BSC.pack "fooba")  @=? B85.decode (BSC.pack "AoDTs@/")
    Right (BSC.pack "foobar") @=? B85.decode (BSC.pack "AoDTs@<)")

case_dec_specials :: IO ()
case_dec_specials = do
    -- all zero
    Right (BS.pack [0,0,0,0]) @=? B85.decode (BSC.pack "z")
    -- all space
    Right (BS.pack [32,32,32,32]) @=? B85.decode (BSC.pack "y")
    -- double special
    Right (BS.pack [32,32,32,32,0,0,0,0]) @=? B85.decode (BSC.pack "yz")

prop_encdec :: [Word8] -> Bool
prop_encdec ws = BS.pack ws == fromRight (B85.decode $ B85.encode $ BS.pack ws)

tests :: TestTree
tests = $(testGroupGenerator)