spulec/moto — pull request #181 by ghalib (2014-08-29 21:32:12+00:00)
Title: Creating a queue with existing name is now a no-op

This is more in line with Amazon's CreateQueue API
(http://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_CreateQueue.html).

Previously, calling create_queue with a name that already existed
would cause moto to overwrite the existing queue with a new empty one.