public void OnNavigatedTo_Fill_Items_And_SelectedProduct()
{
var repository = new MockProductCatalogRepository();
var navigationService = new MockNavigationService();
repository.GetProductAsyncDelegate = (productNumber) =>
{
Product product = null;
if (productNumber == "1")
{
product = new Product { ProductNumber = productNumber, SubcategoryId = 1 };
}
return Task.FromResult(product);
};
repository.GetProductsAsyncDelegate = (subCategoryId) =>
{
ReadOnlyCollection<Product> products = null;
if (subCategoryId == 1)
{
products = new ReadOnlyCollection<Product>(new List<Product>
{
new Product(){ ProductNumber = "1", ImageUri = new Uri("http://image") },
new Product(){ ProductNumber = "2", ImageUri = new Uri("http://image") },
new Product(){ ProductNumber = "3", ImageUri = new Uri("http://image") }
});
}
return Task.FromResult(products);
};
var target = new ItemDetailPageViewModel(repository, navigationService, new MockShoppingCartRepository(), null, null, null, new MockSearchPaneService());
target.OnNavigatedTo("1", NavigationMode.New, null);
Assert.IsNotNull(target.Items);
Assert.AreEqual(3, ((IReadOnlyCollection<ProductViewModel>)target.Items).Count);
Assert.AreEqual(target.Items.First(), target.SelectedProduct);
}
public void OnNavigatedTo_When_Service_Not_Available_Then_Pops_Alert()
{
var repository = new MockProductCatalogRepository();
var navigationService = new MockNavigationService();
var alertService = new MockAlertMessageService();
var resourceLoader = new MockResourceLoader();
bool alertCalled = false;
repository.GetProductAsyncDelegate = (productNumber) =>
{
throw new HttpRequestException();
};
repository.GetProductsAsyncDelegate = (subCategoryId) =>
{
throw new HttpRequestException();
};
alertService.ShowAsyncDelegate = (msg, title) =>
{
alertCalled = true;
return Task.FromResult(string.Empty);
};
var target = new ItemDetailPageViewModel(repository, navigationService, new MockShoppingCartRepository(), alertService, resourceLoader, null, new MockSearchPaneService());
target.OnNavigatedTo("1", NavigationMode.New, null);
Assert.IsTrue(alertCalled);
}
public async Task UnpinFromStart_FiresOnly_IfProductIsSelected_And_SecondaryTileDoesNotExist()
{
bool fired = false;
var tileService = new MockTileService();
var target = new ItemDetailPageViewModel(null, new MockNavigationService(), null, null, null, tileService, null);
// Case 1: Item not selected --> should not be fired
tileService.SecondaryTileExistsDelegate = (a) => true;
tileService.UnpinTileDelegate = (a) =>
{
fired = true;
return Task.FromResult(true);
};
await target.UnpinProductCommand.Execute();
Assert.IsFalse(fired);
// Case 2: Item selected but SecondaryTile does not exist --> should not be fired
tileService.SecondaryTileExistsDelegate = (a) => false;
target.SelectedProduct = new ProductViewModel(new Product() { ImageUri = new Uri("http://dummy-image-uri.com") });
await target.UnpinProductCommand.Execute();
Assert.IsFalse(fired);
// Case 3: Item selected and SecondaryTile exists --> should be fired
tileService.SecondaryTileExistsDelegate = (a) => true;
await target.UnpinProductCommand.Execute();
Assert.IsTrue(fired);
}
public async Task UnpinFromStart_Changes_IsAppBarSticky()
{
var tileService = new MockTileService() { SecondaryTileExistsDelegate = (a) => false };
var target = new ItemDetailPageViewModel(null, new MockNavigationService(), null, null, null, tileService, null);
target.SelectedProduct = new ProductViewModel(new Product() { ImageUri = new Uri("http://dummy-image-uri.com") });
// The AppBar should be sticky when the item is being unpinned
tileService.UnpinTileDelegate = (a) =>
{
Assert.IsTrue(target.IsAppBarSticky);
return Task.FromResult(true);
};
// Check if the AppBar is Sticky before unpinning
Assert.IsFalse(target.IsAppBarSticky);
await target.UnpinProductCommand.Execute();
// Check if the AppBar is Sticky after unpinning
Assert.IsFalse(target.IsAppBarSticky);
}
public async Task GoBack_When_CanGoBack_Is_True()
{
var repository = new MockProductCatalogRepository();
var navigationService = new MockNavigationService
{
CanGoBackDelegate = () => true,
GoBackDelegate = () => Assert.IsTrue(true, "I can go back")
};
var target = new ItemDetailPageViewModel(repository, navigationService, new MockShoppingCartRepository(), null, null, null, null);
bool canExecute = target.GoBackCommand.CanExecute();
if (canExecute)
{
await target.GoBackCommand.Execute();
}
else
{
Assert.Fail();
}
}