refactor: extract NATS.Server.Monitoring.Tests project
Move 39 monitoring, events, and system endpoint test files from NATS.Server.Tests into a dedicated NATS.Server.Monitoring.Tests project. Update namespaces, replace private GetFreePort/ReadUntilAsync with TestUtilities shared helpers, add InternalsVisibleTo, and register in the solution file. All 439 tests pass.
This commit is contained in:
Joseph Doherty
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using System.Text.Json;
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using NATS.Server.Events;
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namespace NATS.Server.Monitoring.Tests.Events;
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/// <summary>
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/// Tests that EventBuilder produces fully-populated system event messages
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/// and that all field contracts are met.
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/// Go reference: events.go sendConnectEventMsg, sendDisconnectEventMsg,
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/// sendAccountNumConns, sendStatsz — Gap 10.6.
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/// </summary>
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public class FullEventPayloadTests
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{
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// ========================================================================
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// BuildConnectEvent
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// ========================================================================
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[Fact]
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public void BuildConnectEvent_AllFieldsPopulated()
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{
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// Go reference: events.go sendConnectEventMsg — all client fields must be set.
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var evt = EventBuilder.BuildConnectEvent(
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serverId: "SRV-001",
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serverName: "test-server",
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cluster: "east-cluster",
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clientId: 42,
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host: "10.0.0.1",
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account: "$G",
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user: "alice",
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name: "my-client",
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lang: "csharp",
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version: "1.0.0");
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evt.ShouldNotBeNull();
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evt.Id.ShouldNotBeNullOrEmpty();
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evt.Time.ShouldBeGreaterThan(DateTime.MinValue);
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evt.Server.Id.ShouldBe("SRV-001");
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evt.Server.Name.ShouldBe("test-server");
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evt.Server.Cluster.ShouldBe("east-cluster");
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evt.Client.Id.ShouldBe(42UL);
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evt.Client.Host.ShouldBe("10.0.0.1");
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evt.Client.Account.ShouldBe("$G");
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evt.Client.User.ShouldBe("alice");
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evt.Client.Name.ShouldBe("my-client");
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evt.Client.Lang.ShouldBe("csharp");
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evt.Client.Version.ShouldBe("1.0.0");
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evt.Client.Start.ShouldBeGreaterThan(DateTime.MinValue);
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}
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[Fact]
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public void BuildConnectEvent_HasCorrectEventType()
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{
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// Go reference: events.go — connect advisory type constant.
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var evt = EventBuilder.BuildConnectEvent(
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serverId: "SRV-001",
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serverName: "test-server",
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cluster: null,
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clientId: 1,
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host: "127.0.0.1",
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account: null,
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user: null,
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name: null,
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lang: null,
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version: null);
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evt.Type.ShouldBe(ConnectEventMsg.EventType);
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evt.Type.ShouldBe("io.nats.server.advisory.v1.client_connect");
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}
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// ========================================================================
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// BuildDisconnectEvent
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// ========================================================================
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[Fact]
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public void BuildDisconnectEvent_AllFieldsPopulated()
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{
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// Go reference: events.go sendDisconnectEventMsg — sent, received, and reason required.
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var sent = new DataStats { Msgs = 100, Bytes = 2_048 };
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var received = new DataStats { Msgs = 50, Bytes = 1_024 };
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var evt = EventBuilder.BuildDisconnectEvent(
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serverId: "SRV-002",
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serverName: "test-server",
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cluster: "west-cluster",
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clientId: 99,
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host: "192.168.1.5",
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account: "MYACC",
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user: "bob",
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reason: "Client Closed",
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sent: sent,
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received: received);
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evt.ShouldNotBeNull();
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evt.Id.ShouldNotBeNullOrEmpty();
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evt.Time.ShouldBeGreaterThan(DateTime.MinValue);
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evt.Server.Id.ShouldBe("SRV-002");
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evt.Server.Name.ShouldBe("test-server");
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evt.Server.Cluster.ShouldBe("west-cluster");
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evt.Client.Id.ShouldBe(99UL);
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evt.Client.Host.ShouldBe("192.168.1.5");
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evt.Client.Account.ShouldBe("MYACC");
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evt.Client.User.ShouldBe("bob");
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evt.Client.Stop.ShouldBeGreaterThan(DateTime.MinValue);
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evt.Reason.ShouldBe("Client Closed");
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evt.Sent.Msgs.ShouldBe(100);
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evt.Sent.Bytes.ShouldBe(2_048);
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evt.Received.Msgs.ShouldBe(50);
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evt.Received.Bytes.ShouldBe(1_024);
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}
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[Fact]
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public void BuildDisconnectEvent_HasCorrectEventType()
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{
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// Go reference: events.go — disconnect advisory type constant.
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var evt = EventBuilder.BuildDisconnectEvent(
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serverId: "SRV-002",
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serverName: "test-server",
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cluster: null,
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clientId: 1,
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host: "127.0.0.1",
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account: null,
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user: null,
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reason: "Server Closed",
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sent: new DataStats(),
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received: new DataStats());
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evt.Type.ShouldBe(DisconnectEventMsg.EventType);
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evt.Type.ShouldBe("io.nats.server.advisory.v1.client_disconnect");
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}
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// ========================================================================
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// BuildAccountConnsEvent
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// ========================================================================
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[Fact]
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public void BuildAccountConnsEvent_AllFieldsPopulated()
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{
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// Go reference: events.go sendAccountNumConns — all AccountStat fields must transfer.
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var sent = new DataStats { Msgs = 500, Bytes = 10_000 };
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var received = new DataStats { Msgs = 400, Bytes = 8_000 };
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var evt = EventBuilder.BuildAccountConnsEvent(
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serverId: "SRV-003",
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serverName: "test-server",
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accountName: "ACCT-A",
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connections: 7,
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leafNodes: 2,
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totalConnections: 150,
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numSubscriptions: 33,
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sent: sent,
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received: received,
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slowConsumers: 3);
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evt.ShouldNotBeNull();
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evt.Id.ShouldNotBeNullOrEmpty();
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evt.Time.ShouldBeGreaterThan(DateTime.MinValue);
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evt.Server.Id.ShouldBe("SRV-003");
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evt.Server.Name.ShouldBe("test-server");
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evt.AccountName.ShouldBe("ACCT-A");
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evt.Connections.ShouldBe(7);
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evt.LeafNodes.ShouldBe(2);
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evt.TotalConnections.ShouldBe(150);
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evt.NumSubscriptions.ShouldBe(33u);
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evt.Sent.Msgs.ShouldBe(500);
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evt.Received.Bytes.ShouldBe(8_000);
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evt.SlowConsumers.ShouldBe(3);
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evt.Type.ShouldBe(AccountNumConns.EventType);
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}
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// ========================================================================
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// BuildServerStats
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// ========================================================================
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[Fact]
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public void BuildServerStats_AllFieldsPopulated()
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{
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// Go reference: events.go sendStatsz — all stat fields must be set.
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var sent = new DataStats { Msgs = 1_000, Bytes = 50_000 };
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var received = new DataStats { Msgs = 800, Bytes = 40_000 };
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var msg = EventBuilder.BuildServerStats(
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serverId: "SRV-004",
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serverName: "stats-server",
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mem: 134_217_728,
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cores: 8,
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cpu: 15.5,
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connections: 12,
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totalConnections: 600,
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activeAccounts: 4,
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subscriptions: 55,
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sent: sent,
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received: received);
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msg.ShouldNotBeNull();
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msg.Server.Id.ShouldBe("SRV-004");
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msg.Server.Name.ShouldBe("stats-server");
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msg.Stats.Mem.ShouldBe(134_217_728);
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msg.Stats.Cores.ShouldBe(8);
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msg.Stats.Cpu.ShouldBe(15.5);
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msg.Stats.Connections.ShouldBe(12);
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msg.Stats.TotalConnections.ShouldBe(600);
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msg.Stats.ActiveAccounts.ShouldBe(4);
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msg.Stats.Subscriptions.ShouldBe(55);
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msg.Stats.Sent.Msgs.ShouldBe(1_000);
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msg.Stats.Received.Bytes.ShouldBe(40_000);
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// Flat counters mirror the structured stats
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msg.Stats.OutMsgs.ShouldBe(1_000);
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msg.Stats.InMsgs.ShouldBe(800);
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msg.Stats.OutBytes.ShouldBe(50_000);
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msg.Stats.InBytes.ShouldBe(40_000);
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msg.Stats.Start.ShouldBeGreaterThan(DateTime.MinValue);
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}
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// ========================================================================
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// GenerateEventId
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// ========================================================================
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[Fact]
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public void GenerateEventId_UniquePerCall()
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{
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// Go reference: events.go uses nuid.Next() — every call produces a distinct ID.
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var ids = Enumerable.Range(0, 20).Select(_ => EventBuilder.GenerateEventId()).ToList();
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ids.Distinct().Count().ShouldBe(20);
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foreach (var id in ids)
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{
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id.ShouldNotBeNullOrEmpty();
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id.Length.ShouldBe(32); // Guid.ToString("N") is always 32 hex chars
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}
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}
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// ========================================================================
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// GetTimestamp
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// ========================================================================
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[Fact]
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public void GetTimestamp_ReturnsIso8601()
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{
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// Go reference: events use RFC3339Nano timestamps; .NET "O" format is ISO 8601.
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var ts = EventBuilder.GetTimestamp();
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ts.ShouldNotBeNullOrEmpty();
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// "O" format: 2025-02-25T12:34:56.7890000Z — parseable as UTC DateTimeOffset
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var parsed = DateTimeOffset.Parse(ts);
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parsed.Year.ShouldBeGreaterThanOrEqualTo(2024);
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}
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// ========================================================================
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// DataStats default values
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// ========================================================================
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[Fact]
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public void DataStats_DefaultZeroValues()
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{
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// Go reference: zero-value DataStats is valid and all fields default to 0.
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var ds = new DataStats();
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ds.Msgs.ShouldBe(0L);
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ds.Bytes.ShouldBe(0L);
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ds.Gateways.ShouldBeNull();
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ds.Routes.ShouldBeNull();
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ds.Leafs.ShouldBeNull();
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}
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// ========================================================================
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// JSON roundtrip
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// ========================================================================
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[Fact]
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public void ConnectEventMsg_SerializesToJson()
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{
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// Go reference: events.go — connect event serializes to JSON and round-trips.
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var original = EventBuilder.BuildConnectEvent(
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serverId: "SRV-RT",
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serverName: "roundtrip-server",
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cluster: "rt-cluster",
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clientId: 77,
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host: "10.1.2.3",
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account: "RTACC",
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user: "rtuser",
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name: "rt-client",
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lang: "dotnet",
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version: "2.0.0");
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var json = JsonSerializer.Serialize(original);
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json.ShouldNotBeNullOrEmpty();
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json.ShouldContain("\"type\":");
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json.ShouldContain(ConnectEventMsg.EventType);
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json.ShouldContain("\"server\":");
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json.ShouldContain("\"client\":");
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json.ShouldContain("\"SRV-RT\"");
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var deserialized = JsonSerializer.Deserialize<ConnectEventMsg>(json);
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deserialized.ShouldNotBeNull();
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deserialized!.Type.ShouldBe(ConnectEventMsg.EventType);
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deserialized.Id.ShouldBe(original.Id);
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deserialized.Server.Id.ShouldBe("SRV-RT");
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deserialized.Server.Name.ShouldBe("roundtrip-server");
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deserialized.Server.Cluster.ShouldBe("rt-cluster");
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deserialized.Client.Id.ShouldBe(77UL);
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deserialized.Client.Account.ShouldBe("RTACC");
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deserialized.Client.User.ShouldBe("rtuser");
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deserialized.Client.Lang.ShouldBe("dotnet");
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deserialized.Client.Version.ShouldBe("2.0.0");
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}
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}
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