Checking the results of a Factory in a unit test

Question

I have developed some classes with similar behavior, they all implement the same interface. I implemented a factory that creates the appropriate object and returns the inte

Answer 1

Since I don't know how your factory method looks like, all I can advise right now is to

1. Check to see the object is the correct concrete implementation you were looking for:

   IMyInterface fromFactory = factory.create(...);  
   Assert.assertTrue(fromFactory instanceof MyInterfaceImpl1);
   

2. You can check if the factory setup the concrete instances with valid instance variables.