How to get the type of Akka Actors?

How does one validate the type of actors that are created?

I encountered an issue, where I created the wrong actor. I am using guice to create actors and therefore creation is decoupled from business logic.

The root cause of the issue was me creating an Actor (let's call him X) instead of a RouterActor that forwards to actors of type X.

Thus everything looked fine for correctness testing, but the service failed when hitting higher load and timeouts where blocking the actor.

Approaches so far

1. do not test (this is what actually caused the issue)
2. test by getting the actor-path of the response (this seems unnecessarily convoluted)
3. set a performance objective and do not test the implementation but check if the objective holds. i.e.: for 100 requests per second where 10% of the requests time out guarantee a response latency.