This is great. No converting the numbers to strings and the overhead that comes with that. Just simple math.

Check empty strings

Nope

RTFM:

Second argument (optional): space-delimited list of minor words that must always be lowercase except for the first word in the string. The JavaScript/CoffeeScript tests will pass undefined when this argument is unused.

RTFM:

Second argument (optional): space-delimited list of minor words that must always be lowercase except for the first word in the string. The JavaScript/CoffeeScript tests will pass undefined when this argument is unused.

Not an issue

I just added a basic example test.

RTFM:

Second argument (optional): space-delimited list of minor words that must always be lowercase except for the first word in the string. The JavaScript/CoffeeScript tests will pass undefined when this argument is unused.

I'm having the same issue as one of the comments below when trying to solve this kata in python 3.4. It must be a bug because it's about what is being passed into the function which is not in our control.

I'm having an error with the console; it's not inside my code:

Traceback:
in
in test
TypeError: title_case() missing 1 required positional argument: 'minor_words'

I am also having the same error. What is passed in as parameters is not in our control - so it must be bug.