public async Task Can_get_all_Delivery_details_in_database()
        {
            using (var context = new ProcurementDbContext(ContextOptions))
            {
                DeliveriesController deliveriesController = new DeliveriesController(context);

                var result = await deliveriesController.GetDeliveries();

                var viewResult = Assert.IsType <ActionResult <IEnumerable <Delivery> > >(result);
                var delivery   = Assert.IsType <List <Delivery> >(viewResult.Value);

                Assert.Single(delivery);
            }
        }