public void InitializeViewModel()
{
var removeAllFromCartCommand
= new RemoveAllFromCartCommand(shoppingCartRepository, productRepository);
RemoveAllFromCartCommand = new RelayCommand(
execute: () =>
{
removeAllFromCartCommand.Execute();
Refresh();
},
canExecute: () => removeAllFromCartCommand.CanExecute()
);
CheckoutCommand = new RelayCommand(
execute: () => {
var total = LineItems.Sum(x => x.Product.Price * x.Quantity);
MessageBox.Show($"Shopping cart total: ${total}");
},
canExecute: () => LineItems.Any()
);
Refresh();
}
public void Test()
{
// Create commands
string itemName = "Item1";
var stockManager = new InMemoryStockManagerService();
var cart = new ShoppingCart();
var item1 = new ShoppingCartItem {
Name = itemName, Amount = 1, Price = 5m
};
var item2 = new ShoppingCartItem {
Name = itemName, Amount = 1, Price = 25m
};
stockManager.GetItemsCountLeft(itemName).Should().NotBe(0);
var addCartItemCommand1 = new AddItemToCartCommand(stockManager, cart, item1);
var addCartItemCommand2 = new AddItemToCartCommand(stockManager, cart, item1);
var removeCartItemCommand = new RemoveItemFromCart(stockManager, cart, item1);
var addCartItemCommand3 = new AddItemToCartCommand(stockManager, cart, item2);
var removeAllItemsCommand = new RemoveAllFromCartCommand(stockManager, cart);
// Execute
if (addCartItemCommand1.CanExecute())
{
addCartItemCommand1.Execute();
}
stockManager.GetItemsCountLeft(itemName).Should().Be(0);
if (addCartItemCommand2.CanExecute())
{
addCartItemCommand2.Execute();
}
if (removeCartItemCommand.CanExecute())
{
removeCartItemCommand.Execute();
}
stockManager.GetItemsCountLeft(itemName).Should().Be(1);
if (addCartItemCommand3.CanExecute())
{
addCartItemCommand3.Execute();
}
stockManager.GetItemsCountLeft(itemName).Should().Be(0);
if (removeAllItemsCommand.CanExecute())
{
removeAllItemsCommand.Execute();
}
stockManager.GetItemsCountLeft(itemName).Should().Be(1);
}
