A good use case for this is AWX which has the messaging system disabled in tests.

We should add some @pytest.fixture methods that serve various off-the-shelf methods that other projects can use. Specifically I have in mind:

• a context manager to ignore messages for duration it is active, what AWX does now, effectively.
• a context manager to run a thread in the background, that listens to a multiprocessing.Queue, as its own kind of broker.

This would be a similar structure to:

https://github.com/ansible/django-ansible-base/tree/devel/ansible_base/lib/testing