Overwriting Symfony 3.3 container services in controller tests
I'm also facing this issue and there's no hint within the Container class on how to handle this deprecation.
// for all interested, there's a current issue open on github - but no real solution other than either have a lot more bootstrapping code for your unit tests or moving to test the controllers in isolation.I'd recommend to have all controllers defined as services with fixed/defined dependiencies and no direct DIC usage.