public MainWindowViewModel(DataRepository repo)
{
this.repo = repo.ThrowIfNull();
feeds = new ObservableCollection<FeedViewModel>(
repo.AllFeeds().Select(feed => new FeedViewModel(repo, feed)));
feedItems = new ObservableCollection<FeedItemViewModel>(
repo.AllFeedItems().Select(feedItem => new FeedItemViewModel(feedItem)));
FeedsView = CollectionViewSource.GetDefaultView(feeds);
FeedsView.CurrentChanged += HandleFeedsViewCurrentChanged;
FeedItemsView = CollectionViewSource.GetDefaultView(feedItems);
FeedItemsView.Filter = FeedItemsViewFilter;
FeedItemsView.SortDescriptions.Add(new SortDescription("PublishDate",
ListSortDirection.Descending));
NewFeedCommand = new RelayCommand(param => NewFeed());
ModifyFeedCommand = new RelayCommand(param => ModifyFeed());
ClearFeedItemsFilterCommand = new RelayCommand(param => ClearFeedItemsFilter());
repo.FeedAdded += HandleFeedAdded;
repo.FeedModified += HandleFeedModified;
repo.FeedDeleted += HandleFeedDeleted;
repo.FeedItemsAdded += HandleFeedItemsAdded;
FeedsView.MoveCurrentTo(null);
}
public void AllFeeds_ReturnsAllFeeds()
{
context.Feeds.Add(new Feed { Title = "test feed 1", Url = "url" });
context.Feeds.Add(new Feed { Title = "test feed 2", Url = "url" });
context.Feeds.Add(new Feed { Title = "test feed 3", Url = "url" });
context.SaveChanges();
DataRepository underTest = new DataRepository(context);
List<Feed> returnedFeeds = new List<Feed>(underTest.AllFeeds());
Assert.AreEqual(context.Feeds.Count(), returnedFeeds.Count(),
"Returned AllFeeds collection is the wrong length.");
Assert.Contains(context.Feeds.Single(f => f.Title == "test feed 1"), returnedFeeds);
Assert.Contains(context.Feeds.Single(f => f.Title == "test feed 2"), returnedFeeds);
Assert.Contains(context.Feeds.Single(f => f.Title == "test feed 3"), returnedFeeds);
}