I'm getting errors on the 'Test Usage - Translate Characters' and the 'Random Test' parts. All it reports is 'Error'. Does anybody know what exactly this is testing? Because my code works fine for every example I can think of. Thanks.

I'm failing a few of the random tests because the test is expecting an 'undefined' in the string. Is that really what it expects?:

Testing for message 'EATS AT CAT FUN THE LIKES HOME FOOD MESSAGE SLEEP' with wires 'LGWBZIVFTC' It should work with random inputs too - Expected: EACS AC TAC VUN CHE GZKES HOME VOOD MESSALE SGEEPundefined, instead got: EACS AC TAC VUN CHE GZKES HOME VOOD MESSALE SGEEP

That aside, I really enjoyed this kata. Thank you.