/// <summary>
/// Add an item into the shopping basket
/// </summary>
/// <param name="shoppingItem">
/// The shopping item to add into basket
/// </param>
public void AddItem(ShoppingItem shoppingItem)
{
if (this.inventoryService.IsItemAvailable(shoppingItem))
{
this.items.Add(shoppingItem);
this.inventoryService.RemoveItem(shoppingItem);
}
}
public void CanAddAnItemIntoMyBasketWhenItemIsAvailable()
{
// arrange
ShoppingItem myItem = new ShoppingItem();
// act
this.shoppingBasket.AddItem(myItem);
// assert
Assert.That(this.shoppingBasket.GetNumberOfItems(), Is.EqualTo(1), "Basket should contain 1 item");
// verify
this.inventoryServiceMock.Verify(i => i.RemoveItem(myItem), Times.Once());
}
public void CanGetTheDescriptionOfMyBasket()
{
// arrange
ShoppingItem item1 = new ShoppingItem { Price = 5.21, Name = "banana" };
ShoppingItem item2 = new ShoppingItem { Price = 0.18, Name = "apple" };
ShoppingItem item3 = new ShoppingItem { Price = 145, Name = "orange" };
// act
this.shoppingBasket.AddItem(item1);
this.shoppingBasket.AddItem(item2);
this.shoppingBasket.AddItem(item3);
// assert
Assert.That(this.shoppingBasket.GetContentDescription(), Is.StringContaining("banana: $5.21"));
Assert.That(this.shoppingBasket.GetContentDescription(), Is.StringContaining("apple: $0.18"));
Assert.That(this.shoppingBasket.GetContentDescription(), Is.StringContaining("orange: $145"));
}
public void ShouldOnlyAddAvailableItemsIntoBasket()
{
// arrange
ShoppingItem availableItem1 = new ShoppingItem();
this.inventoryServiceMock.Setup(inventory => inventory.IsItemAvailable(availableItem1)).Returns(true);
ShoppingItem availableItem2 = new ShoppingItem();
this.inventoryServiceMock.Setup(inventory => inventory.IsItemAvailable(availableItem2)).Returns(true);
ShoppingItem outOfStockItem3 = new ShoppingItem();
this.inventoryServiceMock.Setup(inventory => inventory.IsItemAvailable(outOfStockItem3)).Returns(false);
ShoppingItem outOfStockItem4 = new ShoppingItem();
this.inventoryServiceMock.Setup(inventory => inventory.IsItemAvailable(outOfStockItem4)).Returns(false);
// act
this.shoppingBasket.AddItem(availableItem1);
this.shoppingBasket.AddItem(availableItem2);
this.shoppingBasket.AddItem(outOfStockItem3);
this.shoppingBasket.AddItem(outOfStockItem4);
// assert
Assert.That(this.shoppingBasket.GetNumberOfItems(), Is.EqualTo(2), "Basket should contain only 2 items because other 2 are out of stock");
// verify
this.inventoryServiceMock.Verify(i => i.RemoveItem(It.IsAny<ShoppingItem>()), Times.Exactly(2));
}
public void ShouldNotAddItemIntoBasketWhenItemIsNotAvailable()
{
// arrange
ShoppingItem myItem = new ShoppingItem();
this.inventoryServiceMock.Setup(inventory => inventory.IsItemAvailable(myItem)).Returns(false);
// act
this.shoppingBasket.AddItem(myItem);
// assert
Assert.That(this.shoppingBasket.GetNumberOfItems(), Is.EqualTo(0), "Basket should not contain any item because item was not available");
// verify
this.inventoryServiceMock.Verify(i => i.RemoveItem(myItem), Times.Never);
}
public void CanGetThePriceOfSeveralItems()
{
// arrange
ShoppingItem item1 = new ShoppingItem { Price = 5.21 };
ShoppingItem item2 = new ShoppingItem { Price = 0.18 };
ShoppingItem item3 = new ShoppingItem { Price = 145 };
// act
this.shoppingBasket.AddItem(item1);
this.shoppingBasket.AddItem(item2);
this.shoppingBasket.AddItem(item3);
// assert
Assert.That(this.shoppingBasket.GetPrice(), Is.EqualTo(160.39).Within(0.0001), "Total price of the basket should be 160.39 (150.39 + 10 for shipping)");
}
public void CanGetThePriceOfASingleItem(double itemPrice, double expectedTotalBasketPrice)
{
// arrange
ShoppingItem myItem = new ShoppingItem { Price = itemPrice };
// act
this.shoppingBasket.AddItem(myItem);
// assert
Assert.That(this.shoppingBasket.GetPrice(), Is.EqualTo(expectedTotalBasketPrice).Within(0.0001), "Total price of the basket should be " + expectedTotalBasketPrice);
}
public void CanGetTheNumberOfItemsInMyBasket()
{
// arrange
ShoppingItem myItem1 = new ShoppingItem();
ShoppingItem myItem2 = new ShoppingItem();
ShoppingItem myItem3 = new ShoppingItem();
// act
this.shoppingBasket.AddItem(myItem1);
this.shoppingBasket.AddItem(myItem2);
this.shoppingBasket.AddItem(myItem3);
// assert
Assert.That(this.shoppingBasket.GetNumberOfItems(), Is.EqualTo(3), "Basket should contain 3 items");
}