public void ApplicationLoadedEventHandler_IfSomeSongsAreDeleted_SkipsDeletedSongsFromLoading()
{
// Arrange
var playlistData = new PlaylistData
{
Songs = new[]
{
new PlaylistSongData {
Id = "active song 0"
},
new PlaylistSongData {
Id = "deleted song 1"
},
new PlaylistSongData {
Id = "active song 2"
},
new PlaylistSongData {
Id = "deleted song 3"
},
},
// Current song index is set between deleted songs, so that we could test index adjustment.
CurrentSongIndex = 2,
};
var loadedSongs = new[]
{
new SongModel {
Id = new ItemId("active song 2")
},
new SongModel
{
// Song title for deleted song is logged differently depending on whether it has track number or not.
// That's why first deleted song has track number and 2nd does not.
Id = new ItemId("deleted song 1"),
TrackNumber = 1,
DeleteDate = new DateTime(2021, 07, 11),
},
new SongModel {
Id = new ItemId("active song 0")
},
new SongModel
{
Id = new ItemId("deleted song 3"),
TrackNumber = null,
DeleteDate = new DateTime(2021, 07, 11),
},
};
var sessionServiceStub = new Mock <ISessionDataService>();
sessionServiceStub.Setup(x => x.GetData <PlaylistData>("SongPlaylistData", It.IsAny <CancellationToken>())).ReturnsAsync(playlistData);
var songServiceStub = new Mock <ISongsService>();
songServiceStub.Setup(x => x.GetSongs(It.IsAny <IEnumerable <ItemId> >(), It.IsAny <CancellationToken>())).ReturnsAsync(loadedSongs);
var mocker = new AutoMocker();
mocker.Use(sessionServiceStub);
mocker.Use(songServiceStub);
var target = mocker.CreateInstance <PersistentPlaylistViewModel>();
PlaylistLoadedEventArgs playlistLoadedEvent = null;
Messenger.Default.Register <PlaylistLoadedEventArgs>(this, e => e.RegisterEvent(ref playlistLoadedEvent));
PlaylistChangedEventArgs playlistChangedEventArgs = null;
Messenger.Default.Register <PlaylistChangedEventArgs>(this, e => e.RegisterEvent(ref playlistChangedEventArgs));
// Act
Messenger.Default.Send(new ApplicationLoadedEventArgs());
// Assert
var expectedSongs = new[]
{
loadedSongs[2],
loadedSongs[0],
};
target.Songs.Should().BeEquivalentTo(expectedSongs, x => x.WithStrictOrdering());
target.CurrentSong.Should().Be(expectedSongs[1]);
playlistLoadedEvent.VerifyPlaylistEvent(expectedSongs, 1);
}
public void ApplicationLoadedEventHandler_IfValidPlaylistSessionDataExist_LoadsPlaylistSongsCorrectly()
{
// Arrange
var playlistData = new PlaylistData
{
Songs = new[]
{
new PlaylistSongData {
Id = "song 0"
},
new PlaylistSongData {
Id = "song 1"
},
new PlaylistSongData {
Id = "song 2"
},
new PlaylistSongData {
Id = "song 3"
},
},
CurrentSongIndex = 1,
};
var songIds = new[]
{
new ItemId("song 0"),
new ItemId("song 1"),
new ItemId("song 2"),
new ItemId("song 3"),
};
var songs = new[]
{
new SongModel {
Id = new ItemId("song 0")
},
new SongModel {
Id = new ItemId("song 1")
},
new SongModel {
Id = new ItemId("song 2")
},
new SongModel {
Id = new ItemId("song 3")
},
};
// ISongsService.GetSongs() does not guarantee songs order.
var songsReturnedByService = new[] { songs[3], songs[2], songs[0], songs[1] };
var sessionServiceStub = new Mock <ISessionDataService>();
sessionServiceStub.Setup(x => x.GetData <PlaylistData>("SongPlaylistData", It.IsAny <CancellationToken>())).ReturnsAsync(playlistData);
var songServiceStub = new Mock <ISongsService>();
songServiceStub.Setup(x => x.GetSongs(songIds, It.IsAny <CancellationToken>())).ReturnsAsync(songsReturnedByService);
var mocker = new AutoMocker();
mocker.Use(sessionServiceStub);
mocker.Use(songServiceStub);
var target = mocker.CreateInstance <PersistentPlaylistViewModel>();
PlaylistLoadedEventArgs playlistLoadedEvent = null;
Messenger.Default.Register <PlaylistLoadedEventArgs>(this, e => e.RegisterEvent(ref playlistLoadedEvent));
NoPlaylistLoadedEventArgs noPlaylistLoadedEvent = null;
Messenger.Default.Register <NoPlaylistLoadedEventArgs>(this, e => e.RegisterEvent(ref noPlaylistLoadedEvent));
PlaylistChangedEventArgs playlistChangedEventArgs = null;
Messenger.Default.Register <PlaylistChangedEventArgs>(this, e => e.RegisterEvent(ref playlistChangedEventArgs));
var propertyChangedEvents = new List <PropertyChangedEventArgs>();
target.PropertyChanged += (_, e) => propertyChangedEvents.Add(e);
// Act
Messenger.Default.Send(new ApplicationLoadedEventArgs());
// Assert
target.Songs.Should().BeEquivalentTo(songs, x => x.WithStrictOrdering());
target.CurrentSong.Should().Be(songs[1]);
playlistLoadedEvent.VerifyPlaylistEvent(songs, 1);
noPlaylistLoadedEvent.Should().BeNull();
propertyChangedEvents.VerifySongListPropertyChangedEvents();
}
public void ApplicationLoadedEventHandler_IfCurrentSongInPlaylistDataIsNotSet_LoadsPlaylistCorrectly()
{
// Arrange
var playlistData = new PlaylistData
{
Songs = new[]
{
new PlaylistSongData {
Id = "song 0"
},
new PlaylistSongData {
Id = "song 1"
},
},
CurrentSongIndex = null,
};
var songs = new[]
{
new SongModel {
Id = new ItemId("song 0")
},
new SongModel {
Id = new ItemId("song 1")
},
};
var sessionServiceStub = new Mock <ISessionDataService>();
sessionServiceStub.Setup(x => x.GetData <PlaylistData>("SongPlaylistData", It.IsAny <CancellationToken>())).ReturnsAsync(playlistData);
var songServiceStub = new Mock <ISongsService>();
songServiceStub.Setup(x => x.GetSongs(It.IsAny <IEnumerable <ItemId> >(), It.IsAny <CancellationToken>())).ReturnsAsync(songs);
var mocker = new AutoMocker();
mocker.Use(sessionServiceStub);
mocker.Use(songServiceStub);
var target = mocker.CreateInstance <PersistentPlaylistViewModel>();
PlaylistLoadedEventArgs playlistLoadedEvent = null;
Messenger.Default.Register <PlaylistLoadedEventArgs>(this, e => e.RegisterEvent(ref playlistLoadedEvent));
PlaylistChangedEventArgs playlistChangedEventArgs = null;
Messenger.Default.Register <PlaylistChangedEventArgs>(this, e => e.RegisterEvent(ref playlistChangedEventArgs));
// Act
Messenger.Default.Send(new ApplicationLoadedEventArgs());
// Assert
target.Songs.Should().BeEquivalentTo(songs, x => x.WithStrictOrdering());
target.CurrentSong.Should().BeNull();
playlistLoadedEvent.VerifyPlaylistEvent(songs, null);
}