[MO-java-dev] mocks of classes

[Dmitri C. <moc...@co...>]

hey all,

I've _almost_ used mock objects several times over the last year or so, but
never quite taken the final step.  I'm currently at that point again, this
time to improve our test coverage in relation to SAP.  We use JCO to connect
to SAP, and my current need is to come up with some way to run our tests
without involving SAP.  Obvious solution: mock objects.

Couple of problems.  Firstly is this wiki page:
http://www.mockobjects.com/wiki/OnlyMockYourOwnInterfaces  I disagree with
the idea of reimplementing an interface to an external party, especially in
a scenario like this where changing the way we talk to SAP is going to
change code regardless of how many layers we put in.  However, I'm not
terribly worried about this.

The real problem is the reliance on java.lang.reflect.Proxy.  This only
allows for interfaces.  I'm wondering if anyone has ever looked at making
mocks of classes?  Using user-provided instances, with interceptors, I dont
imagine it would be too hard to do, but would like to hear from you guys who
know the code a lot better than I do.

thoughts?

cheers
dim