elm/exercises/run-length-encoding/RunLengthEncodingTests.elm

module Main (..) where

import Task
import Console
import ElmTest exposing (..)
import RunLengthEncoding exposing (decode, encode)


tests : Test
tests =
  suite
    "RunLengthEncoding"
    [ test
        "encode simple"
        (assertEqual "2A3B4C" (encode "AABBBCCCC"))
    , test
        "decode simple"
        (assertEqual "AABBBCCCC" (decode "2A3B4C"))
    , test
        "encode with single values"
        (assertEqual
          "12WB12W3B24WB"
          (encode "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB")
        )
    , test
        "decode with single values"
        (assertEqual
          "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB"
          (decode "12WB12W3B24WB")
        )
    , test
        "decode(encode(...)) combination"
        (assertEqual
          "zzz ZZ  zZ"
          (decode (encode "zzz ZZ  zZ"))
        )
    , test
        "encode unicode"
        (assertEqual "⏰3⚽2⭐⏰" (encode "⏰⚽⚽⚽⭐⭐⏰"))
    , test
        "decode unicode"
        (assertEqual "⏰⚽⚽⚽⭐⭐⏰" (decode "⏰3⚽2⭐⏰"))
    ]


port runner : Signal (Task.Task x ())
port runner =
  Console.run (consoleRunner tests)