oban is not the only library doing that. The same applies to Plug.Test, Phoenix.ConnTest or Phoenix.LiveViewTest.
If test helpers are not meant to be bundled in prod code I’d consider a compile time config like config :my_app, compile_test_helpers: false to disable them. Every other toggle will be a heuristic and therefore just waiting to not work for some user.
Generally I’d really consider hard, why including test helpers in prod code would be problematic though. What if the usecase is a test runner and prod actually runs tests?
