Doubtful. That should be using dependency injection.

At the very most you should be expecting an interface, and not having the correct one should yield a runtime error within the code to begin with.

It would be a useful test for a dependency injection framework ;-)

That's what it is. You have a unified interface for generating things, and you need to have deterministic test to make sure your thing is being generated correctly and the data generates the thing fully and correctly.