public async Task FailedToSaveNewShipper_AddShipper_ReturnBadRequest()
{
var shipperModel = new ShipperModel();
var response = await _shipperController.AddShipper(shipperModel);
Assert.IsType <ActionResult <ShipperModel> >(response);
Assert.IsType <BadRequestResult>(response.Result);
_shipperService.Verify(sh => sh.Add(It.IsAny <Shipper>()));
}
