Unit tests for stateful actors

[artursouza]

Cover unit tests for the following scenarios for stateful actors:

Inheritance	Input Type	Output Type	State management (CRUD operations)	Exception in Actor's methods	Exception in Actor's runtime	Custom Serializer
No	String	String	Yes	No	No	No
No	String	String	Yes	No	Yes	No
No	String	String	Yes	Yes	No	No
No	Class	Class	Yes	No	No	No
No	Class	Class	Yes	No	No	Yes
Yes	int	int	Yes	No	No	No
Yes	int	int	Yes	No	Yes	No
Yes	int	int	Yes	Yes	No	No

Validations for all scenario (when applicable):

• Output is as expected
• Exception is as expected
• State is saved as expected.
• Methods are invoked in the Actor class: onActivate(), onDeactivate(), onPreActorMethod(), onPostActorMethod()
• Timer is invoked()
• Reminder is invoked()