Fixed ClassCastException thrown when using with PowerMock

[jskierbi]

There is ClassCastException when using this lib with PowerMock. I added class check before casting inside CreateInstance.kt, which prevents the exception. No PowerMock dependency introduced.

Problem description

Exception:

java.lang.ClassCastException: com.amazon.identity.auth.device.shared.APIListener$$EnhancerByMockitoWithCGLIB$$6966922d cannot be cast to org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$MockAccess

    at com.nhaarman.mockito_kotlin.CreateInstanceKt.uncheckedMock(CreateInstance.kt:165)
    at com.nhaarman.mockito_kotlin.CreateInstanceKt.createInstance(CreateInstance.kt:55)
        ...

Code that caused the exception

@RunWith(PowerMockRunner::class)
class MockitoKotlinPowermockTest {
    @Test fun anyTest() {
        any<APIListener>() // Class cast exception inside
    }
}

[nhaarman]

Thanks!
I'm not at all familiar with PowerMock though, and I'd like a regression test to make sure things won't break in the future.

Could you perhaps create a test that fails without this modification? I don't mind if you have to add additional dependencies, I'm willing to clean up after you :)

[jskierbi]

I'll write some tests, np. Just found out that this workaround misbehaves a bit - after mocking an object real method is called, which is obviously not good. I'll dig up a bit following days and try to push update to this PR both with tests and fix.

[nhaarman]

What is the current status on this?

[nhaarman]

The ClassCastException should be fixed by 85bb5e4. This may however cause #27 to reappear for PowerMock users, I'm not sure of that.