But man, could you take a look at this Kata, I trully beleive there must be a error related to the test: "ShouldWorkForWhitespace", because its expecting to return a empty string of size 4, it doesnt make sense.

I keep having this error, and I dont know why, it doensnt make sense... Its C#, this is the test I can't
to get to work.

Test Failed
Whitespace should work too!
Expected string length 4 but was 0. Strings differ at index 0.
Expected: " "
But was: <string.Empty>
-----------^

how come, I didnt even know this method existed.