public void AddProductToShoppingCart_Should_Return_False_If_Product_Not_Available_In_Stock()
{
//Act
var request = new AddToShoppingCartRequest {
ProductId = ObjectId.GenerateNewId().ToString(),
Amount = 2
};
var shoppingCartRepository = new Mock <IShoppingCartRepository>();
var productRepositoryMock = new Mock <IProductRepository>();
var service = new ShoppingCartService(productRepositoryMock.Object, shoppingCartRepository.Object);
// Act
productRepositoryMock.Setup(x => x.GetByProductId(request.ProductId)).Returns(new Product()
{
Id = request.ProductId,
Name = "Terrarium",
Price = 4.00,
AvailableQuantity = 0
});
var response = service.AddProductToShoppingCart(request);
// Assert
Assert.IsFalse(Convert.ToBoolean(response));
}
public IActionResult AddProductToShoppingCart([FromBody] AddToShoppingCartRequest request)
{
if (request == null)
{
return(BadRequest("product can not be null!"));
}
if (string.IsNullOrEmpty(request.ProductId))
{
return(BadRequest("product id should be greater than zero!"));
}
var res = ShoppingCartService.AddProductToShoppingCart(request);
return(Ok(res));
}
public void AddProductToShoppingCart_Should_Return_False_If_Product_Is_Null()
{
//Act
var request = new AddToShoppingCartRequest {
ProductId = ObjectId.GenerateNewId().ToString(),
Amount = 2
};
var shoppingCartRepository = new Mock <IShoppingCartRepository>();
var productRepositoryMock = new Mock <IProductRepository>();
var service = new ShoppingCartService(productRepositoryMock.Object, shoppingCartRepository.Object);
// Act
var response = service.AddProductToShoppingCart(request);
// Assert
Assert.IsFalse(Convert.ToBoolean(response));
}
public bool AddProductToShoppingCart(AddToShoppingCartRequest request)
{
string productId = request.ProductId;
int amount = request.Amount;
var product = productRepository.GetByProductId(productId);
var isAdded = true;
if (product == null || product.AvailableQuantity == 0 || amount == 0)
{
return(false);
}
var shoppingCartItem = shoppingCartRepository.GetShoppingCartByProductId(productId);
//if this product is not in shopping cart
if (shoppingCartItem == null)
{
shoppingCartItem = new ShoppingCart {
ProductId = product.Id,
Amount = Math.Min(product.AvailableQuantity, amount)
};
//adds the product to the shopping cart as much as the amount available in stock
shoppingCartRepository.Add(shoppingCartItem);
}
else
{
if (product.AvailableQuantity - shoppingCartItem.Amount - amount >= 0)
{
shoppingCartItem.Amount += amount;
}
else
{
shoppingCartItem.Amount += (product.AvailableQuantity - shoppingCartItem.Amount);
isAdded = false;
}
shoppingCartRepository.UpdateShoppingCart(shoppingCartItem);
}
return(isAdded);
}
