public void PlayAndRemoveSelectedTest()
{
// Add music files to playlist
Assert.IsFalse(playlistManager.Items.Any());
viewModel.InsertMusicFilesAction(0, musicFiles);
Assert.AreEqual(2, playlistManager.Items.Count);
// Select the first playlist item
Assert.IsFalse(viewModel.PlaySelectedCommand.CanExecute(null));
Assert.IsFalse(viewModel.RemoveSelectedCommand.CanExecute(null));
AssertHelper.CanExecuteChangedEvent(viewModel.PlaySelectedCommand, () =>
SetSelection(viewModel, playlistManager.Items.First()));
Assert.IsTrue(viewModel.PlaySelectedCommand.CanExecute(null));
Assert.IsTrue(viewModel.RemoveSelectedCommand.CanExecute(null));
// Play the selected item
var playerService = Container.GetExportedValue <PlayerService>();
playerService.IsPlayCommand = true;
bool playPauseCalled = false;
playerService.PlayPauseCommand = new DelegateCommand(() => playPauseCalled = true);
Assert.IsNull(playlistManager.CurrentItem);
viewModel.PlaySelectedCommand.Execute(null);
Assert.IsTrue(playPauseCalled);
Assert.AreEqual(playlistManager.Items.First(), playlistManager.CurrentItem);
// Remove the selected item
var selectedItem = viewModel.SelectedPlaylistItem;
viewModel.RemoveSelectedCommand.Execute(null);
Assert.AreNotEqual(selectedItem, playlistManager.Items.Single());
Assert.AreEqual(playlistManager.Items.Single(), viewModel.SelectedPlaylistItem);
// -- simulate the WPF behavior of updating the SelectedPlaylistItems as well
SetSelection(viewModel, viewModel.SelectedPlaylistItem);
// Play the next selected item
viewModel.PlaySelectedCommand.Execute(null);
// Remove the last item as well
AssertHelper.CanExecuteChangedEvent(viewModel.RemoveSelectedCommand,
() => viewModel.RemoveSelectedCommand.Execute(null));
Assert.IsFalse(viewModel.RemoveSelectedCommand.CanExecute(null));
Assert.IsFalse(playlistManager.Items.Any());
Assert.IsNull(viewModel.SelectedPlaylistItem);
}
