public void GetOriginal_Should_Return_Original()
{
var order = Helper.GetOrder();
var trackable = order.AsTrackable();
trackable.Id = 124;
trackable.CustomerNumber = "Test1";
var original = trackable.CastToIChangeTrackable().GetOriginal();
var newOne = Helper.GetOrder();
original.ShouldBeEquivalentTo(newOne);
}