public void InvokeOperation_VoidInputAndOutput() { TestProvider_Scenarios provider = new TestProvider_Scenarios(TestURIs.TestProvider_Scenarios); InvokeOperation invoke = provider.VoidMethod(TestHelperMethods.DefaultOperationAction, null); EnqueueConditional(() => invoke.IsComplete); EnqueueCallback(delegate { Assert.IsNull(invoke.Value); }); EnqueueTestComplete(); }