It's LoL

testEmptyMessage
Test Failed
Expected string length 0 but was 1. Strings differ at index 0.
Expected: <string.Empty>
But was: "E"
-----------^

public static string decodeMorse(string morseCode)
if(string.IsNullOrWhiteSpace (morseCode)) { return string.Empty; }

        Assert.AreEqual ("I can read morse code",
          Kata.Decode (".. / -.-. .- -. / .-. . .- -.. / -- --- .-. ... . / -.-. --- -.. ."));
          Check this simple test for first char