public CategoryViewModel(Category category, INavigationService navigationService)
{
_category = category;
_navigationService = navigationService;
CategoryNavigationCommand = new DelegateCommand(NavigateToCategory);
if (category != null && category.Products != null)
{
int position = 0;
Products = new ReadOnlyCollection<ProductViewModel>(category.Products
.Select(p => new ProductViewModel(p) { ItemPosition = position++ })
.ToList());
}
}
public void OnNavigatedTo_Fill_Items_And_Title()
{
var repository = new MockProductCatalogRepository();
repository.GetCategoryAsyncDelegate = (categoryId) =>
{
Category category = null;
if (categoryId == 1)
{
category = new Category { Id = categoryId,
Title = "CategoryTitle"
};
}
return Task.FromResult(category);
};
repository.GetProductsAsyncDelegate = i =>
{
ICollection<Product> products = null;
if (i == 1)
{
products = new Collection<Product>(new List<Product>
{
new Product(),
new Product(),
new Product()
});
}
return Task.FromResult(products);
};
var viewModel = new GroupDetailPageViewModel(repository, null, null);
viewModel.OnNavigatedTo(new NavigatedToEventArgs { Parameter = 1, NavigationMode = NavigationMode.New }, null);
Assert.IsNotNull(viewModel.Items);
Assert.AreEqual(3, ((ICollection<ProductViewModel>)viewModel.Items).Count);
Assert.AreEqual("CategoryTitle", viewModel.Title);
}
