//[InlineData(new MockOrderItem[] { new MockOrderItem(), new MockOrderItem})]
public void ItemsShouldContainOnlyAddedItems()
{
var order = new Order();
var items = new IOrderItems[]
{
new MocKOrderItem()
{
Price = 3
},
new MocKOrderItem()
{
Price = 4
},
new MocKOrderItem()
{
Price = 7
},
};
foreach (var item in items)
{
order.Add(item);
}
Assert.Equal(items.Length, order.Items.Count());
foreach (var item in items)
{
Assert.Contains(item, order.Items);
}
}
/// <summary>
/// removes an item from the list
/// </summary>
/// <param name="item">selected item</param>
public void Remove(IOrderItems item)
{
if (item is INotifyPropertyChanged notifier)
{
notifier.PropertyChanged -= OnItemPropertyChanged;
}
items.Remove(item);
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Items"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Subtotal"));
}
/// <summary>
/// this helper method add the item to the list and swaps the screen
/// </summary>
/// <param name="item">item user clicked to be added</param>
/// <param name="screen">sreen to be swapped</param>
void AddItemAndOpenCustomizationScreen(IOrderItems item, FrameworkElement screen)
{
var order = DataContext as Order;
if (order == null)
{
throw new Exception("Data Context expected to be order instance");
}
if (screen != null)
{
var orderControl = this.FindAncestor <OrderControl>();
if (orderControl == null)
{
throw new Exception("An ancestor of ordercontrol expected");
}
screen.DataContext = item;
orderControl.SwapScreen(screen);
}
order.Add(item);
}
internal IOrderItems LoadOrderItems()
{
OrderItems = new OrderItems(Id);
}