public static IDisposable StartRandomlyCrashing(this Node[] nodes, Subject<IEnumerable<Peer>> peerObservable, Random random, IScheduler scheduler = null)
{
return Observable.Interval(new TimeSpan(TestNode.ElectionTimeout.Ticks*7), scheduler ?? Scheduler.Default)
.Subscribe(o =>
{
nodes.Start();
var nodeIndexToRemove = random.Next(0, nodes.Count());
Console.WriteLine(string.Format("Removing Node at index {0}", nodeIndexToRemove));
var id = nodes[nodeIndexToRemove].Id;
nodes[nodeIndexToRemove] = new TestNode(new NodeSettings(id, TestNode.ElectionTimeout, TestNode.HeartBeatTimeout, peerObservable, scheduler));
peerObservable.OnNext(nodes.Where(n => n.Id != id).Select(n => n.AsPeer()));
},
e => Debug.WriteLine(e.Message));
}
public async Task all_nodes_start_as_followers()
{
TestNode.CreateCluster().ForEach(n => n.State.Should().Be(State.Follower));
}
public async Task nodes_do_not_add_themselves_as_peers()
{
var nodes = TestNode.CreateCluster();
nodes.ForEach(n => n.GetPeerIds().Should().NotContain(p => p == n.Id));
}
public async Task Nodes_start_as_followers()
{
var nodes = TestNode.CreateCluster();
nodes.Count(n => n.State == State.Follower).Should().Be(3);
}
