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Multiple Interface Mocking

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Chris asked on 10 Oct 2012, 02:32 PM

This may already be answered and I am just not searching for the right keywords but I will ask it again....

Within my Architecture I have 2 Interfaces (one public lets call it ISpecificBlockEntity which implements IBlockEntity, and one internal IBlockEntitySetup).
I then have an object that implements both of these interfaces. Within my code I have the following generic method:

public TResult CreateEmptyEntity<TResult>() where TResult : IBlockEntity

{

var result = DependencyInjector.InjectEntity<TResult>();

var setupEntity = (result as IBlockEntitySetup);

if (setupEntity == null)

{

throw new EntitySetupNotSupportedException(

"Entity type requested does not support construction through this method.");

}

return result = setupEntity.CreateEmptyEntity‎<TResult>();

}

as you can see I don't want the functionality available in IBlockEntitySetup exposed outside of my library so I made that interface internal (the method shown in the entry point into the library).

What I need to do is mock an object for result (which is easy Mock.Create<ISpecificBlockEntity>()), and mock that same object as an IBlockEntitySetup so I can arrange the CreateEmptyEntity method to do nothing (and so setupEntity does not return null).
Here is the unit test for reference....

[Test]

public void Test0010DependencyInjectionGetMethodCalledOnceWithCorrectType()

{

var mockedTower = Mock.Create<ITowerConfiguration>();

var mockedTowerSetup = mockedTower as IBlockEntitySetup;

Mock.Arrange(() => mockedTowerSetup.CreateEmptyEntity<ITowerConfiguration>()).DoNothing();

Mock.Arrange(() => InjectorMock.InjectEntity<ITowerConfiguration>()).Returns(mockedTowerSetup as ITowerConfiguration).OccursOnce();

Target.CreateEmptyEntity<ITowerConfiguration>();

Mock.Assert(Target);

}

This isn't working, it says the profiler must be enabled to mock/asset target IBlockEntitySetup.CreateEmptyEntity() method.
I have also tried replacing mockedTowerSetup with (mockedTower as IBlockEntitySetup) in the arrange statement, but then I get a Not Implemented exception (which is odd since it should be mocked.....).

Debugging for whatever reason isn't working right even with the profiler disabled....

Is there anyway to do this? Am I coming at this from the wrong direction? Any help is greatly appreciated.

Multiple Interface Mocking

6 Answers, 1 is accepted