private PurchaseMockCollection CreateController(bool paymentResult)
{
PurchaseMockCollection mocks = new PurchaseMockCollection();
mocks.inventory = new InventoryServiceMock();
mocks.payment = new PaymentServiceMock(paymentResult);
mocks.shipping = new ShippingServiceMock();
mocks.logging = new LoggingServiceMock();
mocks.controller = new PurchaseController(mocks.inventory, mocks.payment, mocks.shipping, mocks.logging);
return(mocks);
}
public void NonexistentItemIdReturnsItemNotFound()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(NONEXISTENT_ITEM);
// Assert
Assert.AreEqual(PurchaseResults.ItemNotFound, result, "API should have reported item not found.");
}
public void PurchasingOutOfStockItemReturnsOutOfStock()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(OUT_OF_STOCK_ITEM);
// Assert
Assert.AreEqual(PurchaseResults.OutOfStock, result, "API should have reported out of stock item.");
}
public void PurchasingInStockItemRequestsShipment()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(IN_STOCK_ITEM);
// Assert
Assert.AreEqual(1, mocks.shipping.getOrders().Count, "Order should have been sent to the shipping service.");
Assert.AreEqual(IN_STOCK_ITEM, mocks.shipping.getOrders()[0].Item1, string.Format("We should have ordered item {0} instead of item {1}", IN_STOCK_ITEM, mocks.shipping.getOrders()[0].Item1));
}
public void PurchasingInStockItemLogsPurchase()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(IN_STOCK_ITEM);
// Assert
List <string> logEntries = mocks.logging.GetLogEntries();
Assert.AreEqual(1, logEntries.Count, "Purchase should have been logged.");
Assert.AreNotEqual(-1, logEntries[0].IndexOf("Item 1 purchased by "), "Logging should indicate successful purchase.");
}
public void NonexistentItemIdLogsRequestForNonexistentItem()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(NONEXISTENT_ITEM);
// Assert
List <string> logEntries = mocks.logging.GetLogEntries();
Assert.AreEqual(1, logEntries.Count, "Attempted purchase should have been logged.");
Assert.AreNotEqual(-1, logEntries[0].IndexOf(" attempted to purchase item 314, which doesn't exist."), "Logging should indicate attempt at purchasing a nonexistent item.");
}
public void PurchasingOutOfStockItemLogsAttemptedPurchaseOfOutOfStockItem()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
// Act
PurchaseResults result = mocks.controller.Post(OUT_OF_STOCK_ITEM);
// Assert
List <string> logEntries = mocks.logging.GetLogEntries();
Assert.AreEqual(1, logEntries.Count, "Attempted purchase should have been logged.");
Assert.AreNotEqual(-1, logEntries[0].IndexOf(" attempted to purchase item 2, which is out of stock."), "Logging should indicate attempt at purchasing an out of stock item.");
}
public void FailedPaymentMethodLogsAttemptedPurchaseWithFailedPayment()
{
// Arrange
PurchaseMockCollection mocks = CreateController(false);
int beginningQuantity = mocks.inventory.GetItemQuantity(IN_STOCK_ITEM);
// Act
PurchaseResults result = mocks.controller.Post(IN_STOCK_ITEM);
// Assert
List <string> logEntries = mocks.logging.GetLogEntries();
Assert.AreEqual(1, logEntries.Count, "Attempted purchase should have been logged.");
Assert.AreNotEqual(-1, logEntries[0].IndexOf(" attempted to purchase item 1, but payment failed."), "Logging should indicate failed payment.");
}
public void FailedPaymentMethodDoesNotDecreaseQuantity()
{
// Arrange
PurchaseMockCollection mocks = CreateController(false);
int beginningQuantity = mocks.inventory.GetItemQuantity(IN_STOCK_ITEM);
// Act
PurchaseResults result = mocks.controller.Post(IN_STOCK_ITEM);
// Assert
int expectedValue = beginningQuantity - 1;
int actualValue = mocks.inventory.GetItemQuantity(IN_STOCK_ITEM);
Assert.AreEqual(PurchaseResults.PaymentFailed, result, "API should have reported payment failure.");
Assert.AreEqual(beginningQuantity, actualValue, string.Format("Expected {0} of item {1} instead of {2}. Failed payment should not affect the quantity.", expectedValue, IN_STOCK_ITEM, actualValue));
}
public void PurchasingInStockItemDecreasesQuantity()
{
// Arrange
PurchaseMockCollection mocks = CreateController(true);
int beginningQuantity = mocks.inventory.GetItemQuantity(IN_STOCK_ITEM);
// Act
PurchaseResults result = mocks.controller.Post(IN_STOCK_ITEM);
// Assert
int expectedValue = beginningQuantity - 1;
int actualValue = mocks.inventory.GetItemQuantity(IN_STOCK_ITEM);
Assert.AreEqual(result, PurchaseResults.ItemPurchased, "Item should have been successfully purchased.");
Assert.AreEqual(expectedValue, actualValue, string.Format("Expected {0} of item {1} instead of {2}. Purchasing an item should decrement the quantity by one.", expectedValue, IN_STOCK_ITEM, actualValue));
}