public void Gets()
{
_playlistManager.CreatePlaylist(playlist1);
_playlistManager.CreatePlaylist(playlist2);
Assert.IsEmpty(_playlistManager.GetAllSongsInPlaylist(playlist1.Name));
Assert.IsEmpty(_playlistManager.GetAllSongsInPlaylist(playlist2.Name));
Assert.AreEqual(2, _playlistManager.GetAllPlaylists().Count);
}