[mapcars]

>and why you're supposed to use Mox, which solves that problem

I never used that Mox and never had a need to. I just use `Mock` which allows `passthrough` as I stated in another comment, what other clarity is needed I don't understand. Can you give any example of the problem you can not solve instead of pitiness?

[dnautics]

You can't run concurrent tests doing direct mock injection in that fashion, because the mock is global. If you use Mox (or similar), your mocks are tied to your test.