Re: [Rmock-developer] ClassCastException: Why is it occurring?

[Joakim O. <joa...@ag...>]

I would need to see the complete exception with stacktrace and the
definition of the getEntityManager method to be able to help out
further. I can't see anything obviously wrong with what you're doing
with the information I have right now. I'm not aware of any bugs in
this area that would cause this...

On 1/30/07, Michael Nyika <ny...@ya...> wrote:
> Thanks for replying Joakim: It seems I still have a problem, the exact same
> error pops up (ClassCastException):
>
> Here's my exact setup in code:
> =======================
> applicationContext = (ApplicationContext)intercept(ApplicationContext.class,
> "applicationContext");
>
> applicationContext.getEntityManager();
>  EntityManager manager = (EntityManager)mock(EntityManager.class,
> "mockManager");
>
>  modify().returnValue(manager);
>  startVerification();
>
>
> And the Error is still:
> ==================
> java.lang.ClassCastException
>  at
> com.esri.sln.ss.core.ctx.ApplicationContext$$EnhancerByCGLIB$$1e4df572.getEntityManager(<generated>)
>
> Also note that EntityManager is an Interface, but that's no problem with the
> way i've mocked it out. There's a ton of abstract  methods i'd rather not
> quickly implement from the interface, so i'd prefer to mock it out......
>
>
>
>
> Joakim Ohlrogge <joa...@ag...> wrote:
> It took me a little while to spot the problem:
>
>
> Here you are saying:
>
> >
> > ctx.getEntityManager();
>
> * expect that ctx.getEntityManager() is called
> - once
> - return null (or if EntityManager is an interface, a mocked entity manager)
>
> > modify().returnValue(is.instanceOf(EntityManager.class));
>
> Here you are changing the recorded expectation to return an instance
> of InstanceOfConstraint primed with EntityManager.class. This gives a
> class cast exception since what you should be returning is an instance
> of an EntityManager.
>
> What you want to do here to fix it is:
>
> EntityManager entityManager = new EntityManager(); // or a mock if you
> prefer
> modify().returnValue(entityManager);
>
> I hope this helps some.
> Regards Joakim Ohlrogge
>
>
>
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