public virtual void AddItem(OrderItem newItem)
{
if (newItem != null && !_items.Contains(newItem))
{
_items.Add(newItem);
newItem.SetOrder(this);
}
}
public void SetOrder_instance_adds_to_Order_Items()
{
var order = new Order();
var item = new OrderItem();
item.SetOrder(order);
Assert.AreSame(order, item.Order);
Assert.That(order.Items.Contains(item));
Assert.AreEqual(1, order.Items.Count());
}
public void SetOrder_can_switch_orders()
{
var order1 = new Order();
var order2 = new Order();
var item = new OrderItem();
order1.AddItem(item);
Assert.AreSame(order1, item.Order);
Assert.True(order1.Items.Contains(item));
Assert.False(order2.Items.Any());
item.SetOrder(order2);
Assert.AreSame(order2, item.Order);
Assert.True(order2.Items.Contains(item));
Assert.AreEqual(1, order2.Items.Count());
Assert.False(order1.Items.Any());
}
public virtual void RemoveItem(OrderItem itemToRemove)
{
if (itemToRemove != null && _items.Remove(itemToRemove))
itemToRemove.SetOrder(null);
}
public void SetOrder_null_removes_from_order_Items()
{
var order = new Order();
var item = new OrderItem();
item.SetOrder(order);
item.SetOrder(null);
Assert.IsNull(item.Order);
Assert.False(order.Items.Any());
}