What pattern is this (mock spy ?? )

MockSpyPattern

//DynamicModel is the main part of Massive
//https://github.com/robconery/massive

class SpyMassive : DynamicModel
{
        //Created an empty base constructor for massive to prevent exceptions
        public SpyMassive() : base()
        {
        }
        ///Edited for brevity

        public dynamic SingleResult;
        public override dynamic Single(string @where, params object[] args)
        {
            return SingleResult;
        }
}

Test

[Test]
public void not_found_should_return_false()
{
   //MOCK Expected Result
   _spyMassive.SingleResult = null;
   var email = "test@test.com";           
   Assert.IsNull(_spyMassive.Single(where: "email = @0", args: email));
}