public void EmptySourceList()
{
var msg = new SourceListMessage (new List<AudioSource>());
Assert.AreEqual (0, msg.Sources.Count());
msg.WritePayload (serverContext, writer);
long length = stream.Position;
stream.Position = 0;
msg = new SourceListMessage();
msg.ReadPayload (clientContext, reader);
Assert.AreEqual (length, stream.Position);
Assert.AreEqual (0, msg.Sources.Count());
}