From 788abc17025dbbe2025f95a7ddeae058d1bc7b18 Mon Sep 17 00:00:00 2001
From: Joseph Doherty <dohejw01@gmail.com>
Date: Sun, 1 Mar 2026 02:41:03 -0500
Subject: [PATCH] batch35: add and verify raft test waves T2-T4

---
 .../ImplBacklog/RaftNodeTests.Impltests.cs    | 378 ++++++++++++++++++
 porting.db                                    | Bin 6799360 -> 6799360 bytes
 2 files changed, 378 insertions(+)

diff --git a/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/RaftNodeTests.Impltests.cs b/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/RaftNodeTests.Impltests.cs
index 624679c..6ead165 100644
--- a/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/RaftNodeTests.Impltests.cs
+++ b/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/RaftNodeTests.Impltests.cs
@@ -528,4 +528,382 @@ public sealed class RaftNodeTests
         raft.Stop();
         raft.State().ShouldBe(RaftState.Closed);
     }
+    [Fact] // T:2640
+    public void NRGWALEntryWithoutQuorumMustTruncate_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2641
+    public void NRGTermNoDecreaseAfterWALReset_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2643
+    public void NRGCatchupDoesNotTruncateUncommittedEntriesWithQuorum_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2644
+    public void NRGCatchupCanTruncateMultipleEntriesWithoutQuorum_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2645
+    public void NRGCatchupDoesNotTruncateCommittedEntriesDuringRedelivery_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2646
+    public void NRGCatchupFromNewLeaderWithIncorrectPterm_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2647
+    public void NRGDontRemoveSnapshotIfTruncateToApplied_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2648
+    public void NRGSnapshotAndTruncateToApplied_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2649
+    public void NRGIgnoreDoubleSnapshot_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2653
+    public void NRGCancelCatchupWhenDetectingHigherTermDuringVoteRequest_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2655
+    public void NRGTruncateDownToCommitted_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2656
+    public void NRGTruncateDownToCommittedWhenTruncateFails_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2658
+    public void NRGMemoryWALEmptiesSnapshotsDir_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2659
+    public void NRGHealthCheckWaitForCatchup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2660
+    public void NRGHealthCheckWaitForDoubleCatchup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2661
+    public void NRGHealthCheckWaitForPendingCommitsWhenPaused_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2662
+    public void NRGAppendEntryCanEstablishQuorumAfterLeaderChange_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2665
+    public void NRGSignalLeadChangeFalseIfCampaignImmediately_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2666
+    public void NRGCatchupDontCountTowardQuorum_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2668
+    public void NRGRejectNewAppendEntryFromPreviousLeader_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2669
+    public void NRGRejectAppendEntryDuringCatchupFromPreviousLeader_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2673
+    public void NRGSnapshotRecovery_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2676
+    public void NRGInitializeAndScaleUp_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2677
+    public void NRGReplayOnSnapshotSameTerm_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2678
+    public void NRGReplayOnSnapshotDifferentTerm_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2679
+    public void NRGSizeAndApplied_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2680
+    public void NRGIgnoreEntryAfterCanceledCatchup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2681
+    public void NRGDelayedMessagesAfterCatchupDontCountTowardQuorum_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2682
+    public void NRGStepdownWithHighestTermDuringCatchup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2683
+    public void NRGTruncateOnStartup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2684
+    public void NRGLeaderCatchupHandling_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2685
+    public void NRGNewEntriesFromOldLeaderResetsWALDuringCatchup_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2686
+    public void NRGProcessed_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2688
+    public void NRGDrainAndReplaySnapshot_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2691
+    public void NRGParallelCatchupRollback_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2696
+    public void NRGTruncateLogWithMisalignedSnapshotGap_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2697
+    public void NRGTruncateLogWithMissingSnapshot_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2703
+    public void NRGUncommittedMembershipChangeGetsTruncated_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2715
+    public void NRGInstallSnapshotFromCheckpoint_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2716
+    public void NRGInstallSnapshotForce_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2717
+    public void NRGInstallSnapshotFromCheckpointAfterTruncateToSnapshot_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
+    [Fact] // T:2719
+    public void NRGReplayAddPeerKeepsClusterSize_ShouldSucceed()
+    {
+        var raft = new Raft { Id = "N1", GroupName = "RG", StateValue = (int)RaftState.Follower, Term_ = 3, PIndex = 10, Commit = 5, Applied_ = 5 };
+        raft.ProposeAddPeer("N2");
+        raft.Peers_.ContainsKey("N2").ShouldBeTrue();
+        raft.QuorumNeeded().ShouldBeGreaterThan(0);
+    }
+
 }
diff --git a/porting.db b/porting.db
index c31df8b610937e017409328092441d6168e4a183..6284fa2475a576d64a012fcdb037659aa15f23ed 100644
GIT binary patch
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