public async Task FetchesSongsAfterCachedReturned()
{
var songs1 = Helpers.SetupSongs(1);
songs1[0].Artist = "A";
var songs2 = Helpers.SetupSongs(2);
songs2[0].Artist = "B";
songs2[1].Artist = "C";
var songFetcher = Substitute.For <ISongFetcher <NetworkSong> >();
songFetcher.GetSongsAsync().Returns(Observable.Return(songs1).Concat(Observable.Return(songs2)));
var cache = new InMemoryBlobCache();
var vm = new RemoteArtistsViewModel(songFetcher, cache);
vm.Activator.Activate();
var artists = vm.WhenAnyValue(x => x.Artists).CreateCollection();
await vm.LoadCommand.ExecuteAsync();
Assert.Equal(1, artists[1].Count);
Assert.Equal(2, artists[2].Count);
}
public async Task CachesAllSongs()
{
var songs = Helpers.SetupSongs(3);
var songFetcher = Substitute.For <ISongFetcher <NetworkSong> >();
songFetcher.GetSongsAsync().Returns(Observable.Return(songs));
var vm = new RemoteArtistsViewModel(songFetcher);
vm.Activator.Activate();
await vm.LoadCommand.ExecuteAsync();
var cachedSongs = await BlobCache.LocalMachine.GetObject <List <NetworkSong> >(BlobCacheKeys.RemoteSongs);
Assert.Equal(3, cachedSongs.Count);
}
public async Task DistinctsFetchedSongsByGuid()
{
var songs = Helpers.SetupSongs(2);
songs[0].Artist = "A";
songs[1].Artist = "B";
var songFetcher = Substitute.For <ISongFetcher <NetworkSong> >();
songFetcher.GetSongsAsync().Returns(Observable.Return(songs).Concat(Observable.Return(songs)));
var cache = new InMemoryBlobCache();
var vm = new RemoteArtistsViewModel(songFetcher, cache);
vm.Activator.Activate();
var loadResults = vm.LoadCommand.CreateCollection();
await vm.LoadCommand.ExecuteAsync();
Assert.Equal(1, loadResults.Count);
}
