I thought this was common knowledge and that it became even easier after Docker became a thing?
Mocks are wishful thinking incarnate most of the time, though here and there they are absolutely needed (like 3rd party APIs without sandbox environments, or quite expensive API, or most of the time: both).
Just pick a task runner -- I use just[0] -- and make a task that brings up both Docker and your containers, then run your test task, done. Sure it's a bit fiddly the first time around but I've seen juniors conquer that in a day maximum and then your tests actually work with the real world 99% of the time.
Mocks in general are rarely worth it, the DB ones: 10x so.
Mocks are wishful thinking incarnate most of the time, though here and there they are absolutely needed (like 3rd party APIs without sandbox environments, or quite expensive API, or most of the time: both).
Just pick a task runner -- I use just[0] -- and make a task that brings up both Docker and your containers, then run your test task, done. Sure it's a bit fiddly the first time around but I've seen juniors conquer that in a day maximum and then your tests actually work with the real world 99% of the time.
Mocks in general are rarely worth it, the DB ones: 10x so.
[0] https://github.com/casey/just