Is there any information about the second-to-last basic test? It's the only test I don't have passing, and there's no information for me to use to fix it.

My code is working in every invocation I come up with, but an error is thrown and no info is given on why it failed so I don't know what to fix. Anyone else having this problem?

I'm happy and excited to say that, upon completing this kata, I now believe that I officially am starting to get it. Thanks for authoring this!