public async Task InvokeGroupExceptAsyncWritesToAllValidConnectionsInGroupOutput() { using (var client1 = new TestClient()) using (var client2 = new TestClient()) { var manager = new RedisHubLifetimeManager <MyHub>(new LoggerFactory().CreateLogger <RedisHubLifetimeManager <MyHub> >(), Options.Create(new RedisOptions() { Factory = t => new TestConnectionMultiplexer() })); var connection1 = HubConnectionContextUtils.Create(client1.Connection); var connection2 = HubConnectionContextUtils.Create(client2.Connection); await manager.OnConnectedAsync(connection1).OrTimeout(); await manager.OnConnectedAsync(connection2).OrTimeout(); await manager.AddGroupAsync(connection1.ConnectionId, "gunit").OrTimeout(); await manager.AddGroupAsync(connection2.ConnectionId, "gunit").OrTimeout(); var excludedIds = new List <string> { client2.Connection.ConnectionId }; await manager.InvokeGroupExceptAsync("gunit", "Hello", new object[] { "World" }, excludedIds).OrTimeout(); await AssertMessageAsync(client1); Assert.Null(client2.TryRead()); await connection1.DisposeAsync().OrTimeout(); await connection2.DisposeAsync().OrTimeout(); } }