Replacing Redis with a Python Mocktl;dr When writing tests, mock out a subsystem if and only if it’s prohibitive to test against the real thing. !tl;dr Our product uses Redis. It’s an awesome technology. We’ve avoided needing Redis in our unit tests. But when I added a product feature that made deep use of Redis, I wrote its unit tests to use it, and changed our development fabfile to instantiate a test Redis server when running t
