public void ChangeQuantity_Returns_RedirectToActionResult()
        {
            // Arrange
            var basketDbSetMock = Builder <BasketItemViewModel> .CreateListOfSize(5).Build();

            _iBasketRepositoryMock.Setup(repo => repo.GetBasketItem(1)).Returns(basketDbSetMock);


            //// Act
            var result = _basketController.ChangeQuantity(1, 4);

            //// Assert
            var viewResult = Assert.IsType <RedirectToActionResult>(result);

            Assert.Equal("Index", viewResult.ActionName);
        }