^didn't knew about that. Thanks man.

Thanks guys,

I imported the math factorial with a different name, so that I could use the default function name in the code solution.

All perfect!

yeah, Chrono79 is totally right. the fixed (and random) tests are never going to call get_factorial, so no exception will ever get called. when you import factorial it serves AS the function when you run the sample tests, which is why you pass them

Yes, this could be.

However, note that before trying to submit, I modified the "visible" sample tests from the kata, so that "get_factorial" is called instead of the original function name.

These are the results that I get:

· On "Run tests cases", all are successful
· On "Attempt", 1 out of 16 fails. Output message --> Should throw error

Do you still think this is the problem? I will try to get around anyway.

It's a problem with your code, the function's name is factorial and you're importing one with the same name. get_factorial is never called and so the exception is never thrown.