/// <summary>
/// Attempt to update the retained quantity of a given product
/// </summary>
/// <param name="quantity"></param>
/// <param name="productId"></param>
/// <param name="product"></param>
/// <param name="error"></param>
/// <returns></returns>
public bool TryUpdateRetained(int quantity, int productId, out Product product, out CartOperationError error)
{
error = new CartOperationError();
product = null;
var productCacheKey = ProductCacheKey(productId);
if (!memoryCache.TryGetValue(productCacheKey, out product))
{
error.StatusCode = 404;
error.Message = "Product not found";
return(false);
}
var remaining = product.Stock - product.Retained;
if (quantity > 0 && quantity > remaining)
{
error.StatusCode = 400;
error.Message = "Quantity too large requested";
return(false);
}
product.Retained += quantity;
memoryCache.Set(productCacheKey, product);
return(true);
}
public void RemoveCartItemTestCaseOk()
{
var cart = new Cart
{
Id = "123",
CartItems = new Dictionary <int, CartItem> {
{ 42, new CartItem {
ProductId = 42, Quantity = 2
} },
{ 43, new CartItem {
ProductId = 43, Quantity = 2
} }
}
};
var obj = (object)cart;
memoryCache.Setup(x => x.TryGetValue(It.IsAny <string>(), out obj)).Returns(true);
var product = new Product();
var error = new CartOperationError();
productCacheService
.Setup(x => x.TryUpdateRetained(It.IsAny <int>(), It.IsAny <int>(), out product, out error))
.Returns(true);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
Assert.NotNull(service.RemoveCartItem("123", 42, out error));
Assert.AreEqual(1, cart.CartItems.Count);
}
public void SetCartItemCaseInvalidQuantity()
{
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
var error = new CartOperationError();
Assert.Null(service.SetCartItem("123", new CartItem {
Quantity = 0
}, out error));
Assert.AreEqual(400, error.StatusCode);
}
public void ClearCartTestCaseNotFound()
{
var cart = new Cart();
var obj = (object)cart;
memoryCache.Setup(x => x.TryGetValue(It.IsAny <string>(), out obj)).Returns(false);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
var error = new CartOperationError();
Assert.Null(service.ClearCart("123", out error));
}
public void SetCartItemCaseProductNotFound()
{
repository.Setup(x => x.Find(It.IsAny <int>())).Returns((Product)null);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
var error = new CartOperationError();
Assert.Null(service.SetCartItem("123", new CartItem {
Quantity = 1, ProductId = 42
}, out error));
Assert.AreEqual(400, error.StatusCode);
}
public void RemoveCartItemTestCaseCartNotFound()
{
var cart = new Cart();
var obj = (object)cart;
memoryCache.Setup(x => x.TryGetValue(It.IsAny <string>(), out obj)).Returns(false);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
var error = new CartOperationError();
Assert.Null(service.RemoveCartItem("123", 42, out error));
Assert.AreEqual(404, error.StatusCode);
}
public void RemoveCartItemTestCaseProductNotInCart()
{
var cart = new Cart
{
Id = "123",
CartItems = new Dictionary <int, CartItem>()
};
var obj = (object)cart;
memoryCache.Setup(x => x.TryGetValue(It.IsAny <string>(), out obj)).Returns(true);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
var error = new CartOperationError();
Assert.Null(service.RemoveCartItem("123", 42, out error));
Assert.AreEqual(400, error.StatusCode);
}
public void ClearCartTestCaseOk()
{
var cart = new Cart
{
CartItems = new Dictionary <int, CartItem> {
{ 42, new CartItem() }
}
};
var obj = (object)cart;
var error = new CartOperationError();
var product = new Product();
memoryCache.Setup(x => x.TryGetValue(It.IsAny <string>(), out obj)).Returns(true);
productCacheService
.Setup(x => x.TryUpdateRetained(It.IsAny <int>(), It.IsAny <int>(), out product, out error))
.Returns(true);
var service = new CustomerCartService(memoryCache.Object, hub.Object, productCacheService.Object);
Assert.NotNull(service.ClearCart("123", out error));
Assert.IsEmpty(cart.CartItems);
}
