public void VMListensToShoppingCartUpdatedEvent_ThenCalculatesTotalNumberOfItemsInCart()
{
var shoppingCart = new ShoppingCart(new List<ShoppingCartItem>());
var shoppingCartRepository = new MockShoppingCartRepository();
shoppingCartRepository.GetShoppingCartAsyncDelegate = () => Task.FromResult(shoppingCart);
var shoppingCartUpdatedEvent = new ShoppingCartUpdatedEvent();
var eventAggregator = new MockEventAggregator();
eventAggregator.GetEventDelegate = type =>
{
if (type == typeof(ShoppingCartUpdatedEvent)) return shoppingCartUpdatedEvent;
if (type == typeof(ShoppingCartItemUpdatedEvent)) return new ShoppingCartItemUpdatedEvent();
return null;
};
var accountService = new MockAccountService();
accountService.VerifyUserAuthenticationAsyncDelegate = () => Task.FromResult((UserInfo)null);
var target = new ShoppingCartTabUserControlViewModel(shoppingCartRepository, eventAggregator, null, null, accountService);
shoppingCart = new ShoppingCart(new List<ShoppingCartItem>()
{
new ShoppingCartItem {Quantity = 1},
new ShoppingCartItem {Quantity = 2}
});
Assert.AreEqual(0, target.ItemCount);
shoppingCartUpdatedEvent.Publish(null);
Assert.AreEqual(3, target.ItemCount);
}
public void ShoppingCartUpdated_WithNullCart_SetsItemCountZero()
{
var shoppingCartRepository = new MockShoppingCartRepository();
var shoppingCart = new ShoppingCart(new List<ShoppingCartItem> {new ShoppingCartItem {Quantity = 99}});
shoppingCartRepository.GetShoppingCartAsyncDelegate = () => Task.FromResult(shoppingCart);
var eventAggregator = new MockEventAggregator();
var shoppingCartUpdatedEvent = new ShoppingCartUpdatedEvent();
eventAggregator.GetEventDelegate = type =>
{
if (type == typeof(ShoppingCartUpdatedEvent)) return shoppingCartUpdatedEvent;
if (type == typeof(ShoppingCartItemUpdatedEvent)) return new ShoppingCartItemUpdatedEvent();
return null;
};
var accountService = new MockAccountService();
accountService.VerifyUserAuthenticationAsyncDelegate = () => Task.FromResult((UserInfo)null);
var target = new ShoppingCartTabUserControlViewModel(shoppingCartRepository, eventAggregator, null, null, accountService);
shoppingCartUpdatedEvent.Publish(null);
Assert.AreEqual(99, target.ItemCount);
shoppingCartRepository.GetShoppingCartAsyncDelegate = () => Task.FromResult<ShoppingCart>(null);
shoppingCartUpdatedEvent.Publish(null);
Assert.AreEqual(0, target.ItemCount);
}
public void FailedCallToShoppingCartRepository_ShowsAlert()
{
var alertCalled = false;
var shoppingCartRepository = new MockShoppingCartRepository();
shoppingCartRepository.GetShoppingCartAsyncDelegate = () =>
{
throw new Exception();
};
var alertMessageService = new MockAlertMessageService();
alertMessageService.ShowAsyncDelegate = (s, s1) =>
{
alertCalled = true;
Assert.AreEqual("ErrorServiceUnreachable", s1);
return Task.FromResult(string.Empty);
};
var accountService = new MockAccountService();
accountService.VerifyUserAuthenticationAsyncDelegate = () => Task.FromResult((UserInfo)null);
var target = new ShoppingCartTabUserControlViewModel(shoppingCartRepository, null, alertMessageService, new MockResourceLoader(), accountService);
Assert.IsTrue(alertCalled);
}
