public void PreviousAndNext()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.CurrentItem = threeItems[0]);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.NextItem());
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.NextItem());
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
}
public void SearchTextTest()
{
var viewModel = Container.GetExportedValue<PlaylistViewModel>();
var view = Container.GetExportedValue<MockPlaylistView>();
PlaylistItem scrollIntoViewItem = null;
view.ScrollIntoViewStub = x => scrollIntoViewItem = x;
bool focusSearchBoxCalled = false;
view.FocusSearchBoxStub = () => focusSearchBoxCalled = true;
var musicFiles = new[]
{
MockMusicFile.CreateEmpty(@"C:\Users\Public\Music\Dancefloor\Culture Beat - Serenity.wav"),
MockMusicFile.CreateEmpty(@"C:\Future Breeze - Why don't you dance with me.mp3"),
MockMusicFile.CreateEmpty(@"C:\Culture Beat - Serenity - Epilog.wma"),
};
var playlistManager = new PlaylistManager();
playlistManager.AddAndReplaceItems(musicFiles.Select(x => new PlaylistItem(x)));
viewModel.PlaylistManager = playlistManager;
viewModel.SearchText = "Bill";
Assert.IsNull(viewModel.SelectedPlaylistItem);
Assert.IsNull(scrollIntoViewItem);
Assert.IsTrue(focusSearchBoxCalled);
viewModel.SearchText = "Cul";
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[0], scrollIntoViewItem);
// Selection stays on the same item
viewModel.SearchText = "Cultur";
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[0], scrollIntoViewItem);
viewModel.SearchText = "Epi";
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[2], scrollIntoViewItem);
// Selection stays on the same item
scrollIntoViewItem = null;
viewModel.SearchText = "";
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
Assert.IsNull(scrollIntoViewItem);
viewModel.SelectedPlaylistItem = playlistManager.Items[1];
// Search starts from selection
viewModel.SearchText = "Cul";
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[2], scrollIntoViewItem);
}
public void PreviousAndNextWithShuffle()
{
var randomService = new MockRandomService();
int randomNumber = 0;
int lastMaxValue = -1;
randomService.NextRandomNumberStub = maxValue =>
{
lastMaxValue = maxValue;
return randomNumber;
};
var manager = new PlaylistManager(3, randomService);
manager.AddAndReplaceItems(threeItems);
manager.Shuffle = true;
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.CurrentItem = threeItems[0]);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
randomNumber = 1;
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.NextItem());
Assert.AreEqual(1, lastMaxValue);
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
randomNumber = 0;
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.NextItem());
Assert.AreEqual(0, lastMaxValue);
Assert.AreEqual(threeItems[1], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsFalse(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[2], manager.CurrentItem);
Assert.IsTrue(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.PreviousItem());
Assert.AreEqual(threeItems[0], manager.CurrentItem);
Assert.IsFalse(manager.CanPreviousItem);
Assert.IsTrue(manager.CanNextItem);
}
public void SearchNextAndPrevious()
{
var viewModel = Container.GetExportedValue<PlaylistViewModel>();
var view = Container.GetExportedValue<MockPlaylistView>();
var musicFiles = new[]
{
MockMusicFile.CreateEmpty(@"C:\Culture Beat"),
MockMusicFile.CreateEmpty(@"C:\Culture Beat"),
MockMusicFile.CreateEmpty(@"C:\Culture Beat"),
MockMusicFile.CreateEmpty(@"C:\Foo"),
};
var playlistManager = new PlaylistManager();
playlistManager.AddAndReplaceItems(musicFiles.Select(x => new PlaylistItem(x)));
viewModel.PlaylistManager = playlistManager;
viewModel.SearchText = "Culture";
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
viewModel.SearchNextCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[1], viewModel.SelectedPlaylistItem);
viewModel.SearchNextCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
viewModel.SearchNextCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
viewModel.SearchPreviousCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
viewModel.SearchPreviousCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[1], viewModel.SelectedPlaylistItem);
viewModel.SearchPreviousCommand.Execute(null);
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
}
public void SearchTextIsContainedTest()
{
var viewModel = Container.GetExportedValue<PlaylistViewModel>();
var view = Container.GetExportedValue<MockPlaylistView>();
PlaylistItem scrollIntoViewItem = null;
view.ScrollIntoViewStub = x => scrollIntoViewItem = x;
var musicFiles = new[]
{
CreateMockMusicFile(@"C:\Music\Foo.mp3", "1 title", "1 artist"),
CreateMockMusicFile(@"C:\Music\Baz.wma", "2 TiTle", "2 ArTisT"),
CreateMockMusicFile(@"C:\Music\Abc.mp3", "3 TITLE", "3a artist", "3B ARTIST"),
new MusicFile(x => Task.FromResult((MusicMetadata)null), "do not load"),
};
var playlistManager = new PlaylistManager();
playlistManager.AddAndReplaceItems(musicFiles.Select(x => new PlaylistItem(x)));
viewModel.PlaylistManager = playlistManager;
viewModel.SearchText = "1 TIT";
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[0], scrollIntoViewItem);
viewModel.SearchText = "1 ART";
Assert.AreEqual(playlistManager.Items[0], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[0], scrollIntoViewItem);
viewModel.SearchText = "3B art";
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
Assert.AreEqual(playlistManager.Items[2], scrollIntoViewItem);
// File name is not considered as Title & Artist are set and shown.
scrollIntoViewItem = null;
viewModel.SearchText = "baz";
Assert.AreEqual(playlistManager.Items[2], viewModel.SelectedPlaylistItem);
Assert.IsNull(scrollIntoViewItem);
// Ensure that the search feature does not load the metadata of all Playlist items.
Assert.IsFalse(musicFiles.Last().IsMetadataLoaded);
}
public void TotalDurationWithMetadataLoading()
{
var manager = new PlaylistManager();
Assert.AreEqual(TimeSpan.Zero, manager.TotalDuration);
var firstFile = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(10), 0), "");
manager.AddAndReplaceItems(new[] { new PlaylistItem(firstFile) });
var secondMetadata = new MusicMetadata(TimeSpan.FromSeconds(20), 0);
var secondFile = new MusicFile(async x =>
{
await Task.Delay(10);
return secondMetadata;
}, "");
manager.AddItems(new[] { new PlaylistItem(secondFile) });
Assert.IsTrue(manager.IsTotalDurationEstimated);
Assert.AreEqual(TimeSpan.FromSeconds(20), manager.TotalDuration);
AssertHelper.PropertyChangedEvent(manager, x => x.TotalDuration, () => secondFile.GetMetadataAsync().GetResult());
Assert.IsFalse(manager.IsTotalDurationEstimated);
Assert.AreEqual(TimeSpan.FromSeconds(30), manager.TotalDuration);
var thirdFile = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(30), 0), "");
AssertHelper.PropertyChangedEvent(manager, x => x.TotalDuration, () => manager.AddItems(new[] { new PlaylistItem(thirdFile) }));
Assert.AreEqual(TimeSpan.FromSeconds(60), manager.TotalDuration);
}
public void AddRemoveAndMoveItems()
{
var manager = new PlaylistManager();
Assert.AreEqual(0, manager.Items.Count);
manager.AddItems(threeItems);
Assert.AreEqual(3, manager.Items.Count);
manager.RemoveItems(new[] { threeItems[2] });
Assert.AreEqual(2, manager.Items.Count);
manager.AddAndReplaceItems(threeItems);
Assert.AreEqual(3, manager.Items.Count);
manager.MoveItems(2, new[] { manager.Items[0] });
Assert.IsTrue(manager.Items.SequenceEqual(new[] { threeItems[1], threeItems[2], threeItems[0] }));
}
public void NextWithShuffleAndRepeatAndOneItem()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems.Take(1));
manager.Shuffle = true;
manager.Repeat = true;
manager.CurrentItem = threeItems[0];
manager.NextItem();
Assert.AreEqual(threeItems[0], manager.CurrentItem);
}
public void PreviousAndNextWithClear()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.CurrentItem = threeItems[1];
Assert.IsTrue(manager.CanPreviousItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanPreviousItem, () => manager.ClearItems());
Assert.IsFalse(manager.CanPreviousItem);
AssertHelper.ExpectedException<InvalidOperationException>(() => manager.PreviousItem());
manager.AddAndReplaceItems(threeItems);
manager.CurrentItem = threeItems[1];
Assert.IsTrue(manager.CanNextItem);
AssertHelper.PropertyChangedEvent(manager, x => x.CanNextItem, () => manager.ClearItems());
Assert.IsFalse(manager.CanNextItem);
AssertHelper.ExpectedException<InvalidOperationException>(() => manager.NextItem());
}
public void PreviousAndNextWithRepeat()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.Repeat = true;
manager.CurrentItem = threeItems[0];
for (int i = 0; i < 5; i++)
{
Assert.AreEqual(threeItems[i % 3], manager.CurrentItem);
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
manager.Shuffle = true;
for (int i = 0; i < 5; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
}
public void ResetNextWithShuffle()
{
var manager = new PlaylistManager();
manager.AddAndReplaceItems(threeItems);
manager.Shuffle = true;
manager.CurrentItem = threeItems[0];
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
Assert.IsFalse(manager.CanNextItem);
manager.Reset();
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(manager.CanNextItem);
manager.NextItem();
}
Assert.IsFalse(manager.CanNextItem);
}
