public void TestServerSend(int id, int channel)
{
byte[] array = new byte[10];
const int offset = 2;
const int count = 5;
ArraySegment <byte> segment = new ArraySegment <byte>(array, offset, count);
middleware.ServerSend(id, channel, segment);
inner.Received(1).ServerSend(id, channel, Arg.Is <ArraySegment <byte> >(x => x.Array == array && x.Offset == offset && x.Count == count));
// only need to check first arg,
inner.Received(0).ServerSend(Arg.Is <int>(x => x != id), Arg.Any <int>(), Arg.Any <ArraySegment <byte> >());
}