Re: [MO-java-users] Mocking NetworkInterface

[<st...@m3...>]

First, you should probably address this to the EasyMock list (there should =
be a link off their website).=20

It looks like the problem is that there's no appropriate constructor on the=
 class, so EasyMock can't create an instance. There are various ways round =
this, but the "approved" mock approach would be to use TDD with mocks to de=
fine an interface that meets the exact needs of your code, and then impleme=
nt that interface as a very thin veneer over the third-part class. That ven=
eer implementation would be tested in your integration tests.=20

Steve

On 16 February, 2005, Pico Geyer wrote:
> I'm struggling to get into MockObjects. I'm using MockObject because
> many of my methods are network related, and are hard (or impossible) to
> test with the real objects.
>=20
> I'm using EasyMock with Class Extentions to test a certain method. The
> class that I now want to Mock is Java's NetworkInterface. Problem is
> that this class does not have a public constructor, which makes it hard
> to mock
>=20
> [code]
> MockControl interfaceControl =3D
> MockClassControl.createControl(NetworkInterface.class);
> [/code]
>=20
> The line of code above causes the following exception:
>=20
> java.lang.IllegalArgumentException: No visible constructors in class
> java.net.NetworkInterface
>=20
> Could someone please point me in the right direction on how to mock
> these types of objects?