Question

I am trying to get used Mockito.

I have a class

@Provider
public class SessionProvider  implements InjectableProvider<Bind, Type>{


   @Override
   public ComponentScope getScope() {
      return ComponentScope.PerRequest;
   }

   @Override
   public Injectable getInjectable(ComponentContext ic, Bind bind, Type parameter) {
      return new SessionInjectable();
   }
}

And trying to return null when getInjectable is called.

My use case is like so

public void addProvider(Class<?> klass) {
    providers.add(klass);
}

addProvider(SessionProvider.class);

How can I successfully mock SessionProvider.class?

Thanks

Edit:

My class is like so:

@Path("message")
@Produces(MediaType.APPLICATION_JSON)
public class MessageResource {

   @POST
   @Path("post")
   public String testPostMessage(@Bind Session session, Message message) {
       return "posted";
   }
}

Bind annotation is using my provider. But my current framework does not accept instances of SessionProvider. It is utilizing Class instances.

By the way this is a web service. It is called by my client implementation. I would like to test my message with a mocked session. And for each request it is requested a new one. That is the reason the method is accepting Session Class instead of Session Instance.

I really started to feel that there is something wrong but at where?

Thanks

Answer 1

By default a mock return null :

SessionProvider sessionProvider = mock(SessionProvider.class);
assertNull(sessionProvider.getInjectable(ic, bind, parameter));

For a unit test, you can test MessageResource by invoking testPostMessage with mocks :

messageResource.testPostMessage(mock(SessionMessage.class), mock(Message.class));

or, you could create a mock SessionProvider class returning a mock Session :

@Provider
public class MockSessionProvider  implements InjectableProvider<Bind, Type>{
    public Injectable getInjectable(ComponentContext ic, Bind bind, Type parameter) {
      return mock(Session.class);
    }
}

and then register it on the framework :

addProvider(MockSessionProvider.class);