c# - Testing a get/set with Moq -

i'm trying test set of property, don't know how can in particular case. i'm using .net 4.5 , moq framework.

i've method:

 public invoice approve(invoice invoicetobeapproved) {     var approvedinvoicestatus = invoicestatusrepository.first<approvedstatus>();      invoicetobeapproved.car.remainingseats -= 1;      if (invoicetobeapproved.car.remainingseats < 0)     {         throw new businessexception("there no remaining seats");     }      invoicetobeapproved.invoicestatus = approvedinvoicestatus;      invoicerepository.update(invoicetobeapproved);      context.savechanges();      return invoicetobeapproved; } 

i'm doing unit test (not integration test, i'm not going db).

what want test

invoicetobeapproved.car.remainingseats -= 1; 

i tried using verifyget, can't reach property.

part of test this

var newinvoice = invoiceservice.approveinvoice(invoice); invoicestatusrepository.verify(x => x.first<approvedstatus>()); invoicerepository.verify(x => x.update(it.isany<invoice>())); context.verify(x => x.savechanges(), times.exactly(1)); 

how can test set/get of remainingseats?

thanks in advance!

i don't think should use moq @ this. assuming invoice poco, assert value of property.