public void Scan_ReturnsCorrespondingItem_IfExists()
{
GroceryItemScanner scanner = new GroceryItemScanner(null);
IGroceryItem expected = new WeighedGroceryItem("bananas", 2.38M);
scanner.Items.Add(expected);
IGroceryItem result = scanner.Scan("bananas");
Assert.AreEqual(expected, result);
}
public IGroceryItemOrder CreateOrder(IGroceryItem item)
{
WeighedGroceryItem weighedItem = item as WeighedGroceryItem;
if (weighedItem == null)
{
throw new InvalidGroceryItemTypeException();
}
decimal weight = WeightSelector.SelectWeight(weighedItem);
return(new WeighedGroceryItemOrder(weighedItem, weight));
}
public IGroceryItemOrder CreateOrder(IGroceryItem item)
{
EachesGroceryItem eachesItem = item as EachesGroceryItem;
if (eachesItem == null)
{
throw new InvalidGroceryItemTypeException();
}
int count = CountSelector.SelectCount(eachesItem);
return(new EachesGroceryItemOrder(eachesItem, count));
}
public IGroceryItemOrder CreateOrder(IGroceryItem item)
{
foreach (IGroceryItemOrderFactory factory in Factories)
{
try
{
return(factory.CreateOrder(item));
}
catch (InvalidGroceryItemTypeException)
{
// when a factory throws an exception,
// ignore the exception and try the next factory
}
}
throw new InvalidGroceryItemTypeException();
}
public IGroceryItemOrder CombineOrdersForItem(IGroceryItem item)
{
return(OrdersCombinedByItem.First(combinedOrder => combinedOrder.Item == item));
}
public GroceryItemOrderFake(IGroceryItem item, decimal price)
{
this.Item = item;
this.Price = price;
}
public int SelectCount(IGroceryItem <int> item)
{
return(StaticCount);
}
public GroceryItemOrder(IGroceryItem <TQuantity> item, TQuantity quantity)
{
this.Item = item;
this.Quantity = quantity;
}
public WeighedGroceryItemOrder(IGroceryItem <decimal> item, decimal weight)
: base(item, weight)
{
}
public decimal SelectWeight(IGroceryItem <decimal> item)
{
return(StaticWeight);
}
public EachesGroceryItemOrder(IGroceryItem <int> item, int count = 1)
: base(item, count)
{
}
public IGroceryItemOrder CreateOrder(string name)
{
IGroceryItem item = Scan(name);
return(OrderFactory.CreateOrder(item));
}
