Out of curiosity, why move these tests out of test_utils.py when they're only testing entities from utils.py?

@lucarval Oops, I messed up. I copied test_utils.py to test_app_factory.py but started changing the first one.

Thanks for noticing, I should have reviewed the patch before submitting. Fixing it now.

I don't remember why we've put that in the API, there was a good reason... I guess because we didn't want to block the user if s(he) doesn't actually start using it. But I guess it is fine if we check if there's a RemoteRule in the conf and then if there's not we raise an error if the conf is not configured properly. It makes sense. I hope I'm not forgetting something.

So +1 to me