public void AddItemTest_withQuantity_itemInCartAlready_itemAddedWithQuantity() {
ShoppingCart cart = new ShoppingCart();
Item item = new Item("Apple");
cart.AddItem(item, 3);
Assert.IsTrue(cart.DoesCartContainItem(item));
Assert.AreEqual(3, cart.GetLineItemForItem(item).Quantity);
cart.AddItem(item, 4);
Assert.AreEqual(7, cart.GetLineItemForItem(item).Quantity);
}
public void AddItemTest_itemInCart_addsAdditionalItemToLineItemCount() {
ShoppingCart cart = new ShoppingCart();
Item item = new Item("Apple");
cart.AddItem(item);
Assert.IsTrue(cart.DoesCartContainItem(item));
Assert.AreEqual(1, cart.CountOfItems);
cart.AddItem(item);
Assert.AreEqual(1, cart.CountOfItems);
LineItem lineItem = cart.GetLineItemForItem(item);
Assert.AreEqual(2, lineItem.Quantity);
}
public void GetTotalTest_validTotalsReturned() {
ShoppingCart cart = new ShoppingCart();
Item apple = new Item("Apple");
Item bananas = new Item("Bananas");
cart.AddItem(apple, 3);
cart.AddItem(bananas, 3);
LineItem applesLineItem = cart.GetLineItemForItem(apple);
applesLineItem.PricePerUnit = 2.00;
LineItem bananasLineItem = cart.GetLineItemForItem(bananas);
bananasLineItem.PricePerUnit = 3.00;
Assert.AreEqual(15.00, cart.GetTotal());
}
public void AttachPromotionToItemTest_itemNotInCart_nothingHappens() {
ShoppingCart cart = new ShoppingCart();
Item item = new Item("Apple");
Item item2 = new Item("Bananas");
cart.AddItem(item);
cart.AttachPromotionToItem(item2, new QuantityPricePromotion(item2, "[email protected]"));
LineItem lineItem = cart.GetLineItemForItem(item);
Assert.IsNull(lineItem.Promotion);
}
public void GetLineItemForItemTest_itemInCart_returnsNull() {
ShoppingCart cart = new ShoppingCart();
Item item = new Item("Apple");
cart.AddItem(item);
LineItem lineItem = cart.GetLineItemForItem(item);
Assert.IsNotNull(lineItem);
}
public void GetLineItemForItemTest_itemNotInCart_returnsNull() {
ShoppingCart cart = new ShoppingCart();
LineItem lineItem = cart.GetLineItemForItem(new Item("Apple"));
Assert.IsNull(lineItem);
}
public void GetLineItemForItemTest_nullItem_expectException() {
ShoppingCart cart = new ShoppingCart();
cart.GetLineItemForItem(null);
}
