.Args question

I have the following production code:

private void InitializeInstrumentTemplateLoaderParams()
      {
         this.instrumentTemplateLoaderParams = new DefaultInstrumentTemplateLoaderParams();

         this.instrumentTemplateLoaderParams.InstrumentTemplateMetaList = this.GetInstrumentMetas();

         this.stateProvider.SetSessionData(this.sessionId, this.instrumentTemplateLoaderParamsKey, this.instrumentTemplateLoaderParams);   
      }

As you can see - I instantiate a DefaultInstrumentTemplateLoaderParams instance which is then later passed as an argument to a dependency which I wish to mock.

My test case is as follows:

[Test]
      public void InitializeInstrumentTemplateLoaderParamsTest()
      {
         Mock mockDefaultInstrumentTemplateLoaderParams = MockManager.Mock(typeof(DefaultInstrumentTemplateLoaderParams), Constructor.Mocked);
         mockDefaultInstrumentTemplateLoaderParams.ExpectConstructor();

         this.mockBasePage.ExpectAndReturn("GetInstrumentMetas", this.expectedInstrumentMetas);

         mockDefaultInstrumentTemplateLoaderParams.ExpectSet("InstrumentTemplateMetaList");

         this.mockStateProvider.ExpectCall("SetSessionData");//.Args(this.expectedSessionId, this.expectedInstrumentTemplateLoaderParamsKey, <the instance I created>);

         base.InvokeMethod("InitializeInstrumentTemplateLoaderParams", null);
      }

I have been forced to remove the .Args check from the ExpectCall because I don't see a way to set the arg?

/NB/ The base.InvokeMethod is just a wrapper around some reflection code to invoke a protected/private member.

Regards,

c0d3-m0nk3y