Please do not confuse this with the test suite for C4::Acquisition::GetParcel.
at first, there should be no parcels for our bookseller.
we create an order, mark it as received, and then see if we can find it with GetParcels.
we create another order, mark it as received, and then see if we can find them all with GetParcels.
we create an order, mark it as received, and then see if we can find it with GetParcels.