public void DeregisterPeer()
{
var swarm = new Swarm {
LocalPeer = self
};
swarm.RegisterPeer(other);
Assert.IsTrue(swarm.KnownPeers.Contains(other));
Peer removedPeer = null;
swarm.PeerRemoved += (s, e) => removedPeer = e;
swarm.DeregisterPeer(other);
Assert.IsFalse(swarm.KnownPeers.Contains(other));
Assert.AreEqual(other, removedPeer);
}