如何从EventManager Mock对象获取UnitOfWork，或者如何在PHP单元中获取最后一个持久化对象?

I am trying to unit test my bundle and I want to get unit of work from EventManager Mock. Basically, I want to get the last persisted object. I know in normal application, I can do the same with a EventSubscriber.I am trying to unit test my bundle and I want t