During plugin simulation, the private properties are getting reset to default(instead of mocked values)

[AnoopRawat]

I've private property '_seriesNumber' in my plugin 'SeriesSaveAction', I mock this property before PluginSimulation but it always reset to null during simulation pipeline, while during call to other method of entity, this property shows correct mocked value.

Below is sample code

Entity code :

public class Series : : EntityBaseClass
{
               // some other prop, Ctor & methods.
               
		private string _seriesNumber; 
				
		public void SetSeriesNumber(string seriesNo)
		{
			_seriesNumber= seriesNo; // setting private prop
		}
						
		public bool ValidSeriesNumber()
		{
			return _seriesNumber?.Length == 9;
		}	
}

Unit test method is like :

        [TestMethod]
        public void PlugInSimulation_SeriesSaveActions()
        {

           //_service & _context are already setup in another FakeXrmEasyPipelineTestsBase class.
            var fakeProxy = new XrmServiceProxy(_service);

            var target = new Series(Guid.NewGuid());
            target.SetSeriesNumber("123456789");  // set mocked value as "123456789"

            _context.RegisterPluginStep<SeriesSaveActions>(new PluginStepDefinition()
            {
                MessageName = "Create", // tried also with Update ?
                EntityLogicalName = target.EntityLogicalName,
                Stage = ProcessingStepStage.Preoperation, // also tried with Preoperation
            });

             // now the plugin simulation hits but _seriesNumber is Null 
            // ERROR: private property reset to null during plugin simulation.
            target.CreateSelf(fakeProxy, true); 

            // SUCCESS : when the another method of entity called, then private property persist it's mocked value "123456789"
            bool result = target.ValidSeriesNumber();
            Xunit.Assert.True(result);
          }

In plugin simulation, at some point plugin calls ValidSeriesNumber(), but the private property is always Null inside this method, however it should be showing-up mocked value.

Question:
why the private property is null during plugin simulation, but has mocked value during normal method call ?
how to correctly mock during plugin simulation pipeline ? am I missing something ?

[jordimontana82]

@AnoopRawat Thank you for raising this. I'll move this discussion into the DynamicsValue/fake-xrm-easy repo. This discussion belongs to the deprecated version v1 repo which doesn't have this functionality.

[jordimontana82]

@AnoopRawat I can't actually transfer the discussion because it belongs to a different org, could we please continue the discussion here? DynamicsValue/fake-xrm-easy#67

[jordimontana82]

I'm closing this discussion now, feel free to raise any questions ion the other discussion link.