refactor: extract NATS.Server.JetStream.Tests project
Move 225 JetStream-related test files from NATS.Server.Tests into a dedicated NATS.Server.JetStream.Tests project. This includes root-level JetStream*.cs files, storage test files (FileStore, MemStore, StreamStoreContract), and the full JetStream/ subfolder tree (Api, Cluster, Consumers, MirrorSource, Snapshots, Storage, Streams). Updated all namespaces, added InternalsVisibleTo, registered in the solution file, and added the JETSTREAM_INTEGRATION_MATRIX define.
This commit is contained in:
Joseph Doherty
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// Reference: golang/nats-server/server/filestore.go:5267 (removeMsg)
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// golang/nats-server/server/filestore.go:5890 (eraseMsg)
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//
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// Tests verifying:
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// 1. SequenceSet correctly tracks deleted sequences in MsgBlock
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// 2. Tombstones survive MsgBlock recovery (RebuildIndex populates SequenceSet)
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// 3. Secure erase (Delete with secureErase=true) overwrites payload bytes
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// 4. EraseMsg at FileStore level marks the sequence as deleted
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//
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// Go test analogs:
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// TestFileStoreEraseMsgDoesNotLoseTombstones (filestore_test.go:10781)
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// TestFileStoreTombstonesNoFirstSeqRollback (filestore_test.go:10911)
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// TestFileStoreRemoveMsg (filestore_test.go:5267)
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using System.Security.Cryptography;
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using System.Text;
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using NATS.Server.JetStream.Storage;
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namespace NATS.Server.JetStream.Tests.JetStream.Storage;
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/// <summary>
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/// Tests for SequenceSet-backed deletion tracking and secure erase in MsgBlock.
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/// Reference: golang/nats-server/server/filestore.go eraseMsg / removeMsg.
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/// </summary>
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public sealed class FileStoreTombstoneTrackingTests : IDisposable
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{
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private readonly string _testDir;
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public FileStoreTombstoneTrackingTests()
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{
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_testDir = Path.Combine(Path.GetTempPath(), $"nats-tombstone-tracking-{Guid.NewGuid():N}");
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Directory.CreateDirectory(_testDir);
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}
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public void Dispose()
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{
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if (Directory.Exists(_testDir))
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Directory.Delete(_testDir, recursive: true);
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}
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private string UniqueDir()
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{
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var dir = Path.Combine(_testDir, Guid.NewGuid().ToString("N"));
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Directory.CreateDirectory(dir);
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return dir;
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}
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// -------------------------------------------------------------------------
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// SequenceSet tracking in MsgBlock
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// -------------------------------------------------------------------------
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// Go: removeMsg — after Delete, IsDeleted returns true and DeletedCount == 1
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[Fact]
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public void MsgBlock_Delete_TracksDeletionInSequenceSet()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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block.Write("a", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray());
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block.Write("b", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray());
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block.Write("c", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray());
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block.Delete(2).ShouldBeTrue();
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block.IsDeleted(2).ShouldBeTrue();
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block.IsDeleted(1).ShouldBeFalse();
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block.IsDeleted(3).ShouldBeFalse();
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block.DeletedCount.ShouldBe(1UL);
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block.MessageCount.ShouldBe(2UL);
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}
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// Multiple deletes tracked correctly — SequenceSet merges contiguous ranges.
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[Fact]
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public void MsgBlock_MultipleDeletes_AllTrackedInSequenceSet()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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for (var i = 0; i < 10; i++)
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block.Write($"subj.{i}", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray());
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// Delete seqs 3, 4, 5 (contiguous — SequenceSet will merge into one range).
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block.Delete(3).ShouldBeTrue();
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block.Delete(4).ShouldBeTrue();
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block.Delete(5).ShouldBeTrue();
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block.DeletedCount.ShouldBe(3UL);
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block.MessageCount.ShouldBe(7UL);
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block.IsDeleted(3).ShouldBeTrue();
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block.IsDeleted(4).ShouldBeTrue();
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block.IsDeleted(5).ShouldBeTrue();
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block.IsDeleted(2).ShouldBeFalse();
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block.IsDeleted(6).ShouldBeFalse();
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}
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// -------------------------------------------------------------------------
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// Tombstones survive recovery (RebuildIndex populates SequenceSet)
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// -------------------------------------------------------------------------
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// Go: TestFileStoreTombstonesNoFirstSeqRollback — after restart, deleted seqs still deleted.
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// Reference: filestore.go RebuildIndex reads ebit from block file.
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[Fact]
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public void MsgBlock_Recovery_TombstonesInSequenceSet()
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{
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var dir = UniqueDir();
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// Phase 1: write messages and delete one, then close.
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using (var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024))
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{
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block.Write("a", ReadOnlyMemory<byte>.Empty, "one"u8.ToArray());
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block.Write("b", ReadOnlyMemory<byte>.Empty, "two"u8.ToArray());
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block.Write("c", ReadOnlyMemory<byte>.Empty, "three"u8.ToArray());
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block.Delete(2); // marks seq 2 with ebit on disk
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block.Flush();
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}
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// Phase 2: recover from file — SequenceSet must be populated by RebuildIndex.
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using var recovered = MsgBlock.Recover(0, dir);
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recovered.DeletedCount.ShouldBe(1UL);
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recovered.MessageCount.ShouldBe(2UL);
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recovered.IsDeleted(1).ShouldBeFalse();
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recovered.IsDeleted(2).ShouldBeTrue();
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recovered.IsDeleted(3).ShouldBeFalse();
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// Read should return null for deleted seq.
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recovered.Read(2).ShouldBeNull();
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recovered.Read(1).ShouldNotBeNull();
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recovered.Read(3).ShouldNotBeNull();
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}
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// Multiple tombstones survive recovery.
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[Fact]
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public void MsgBlock_Recovery_MultipleDeletedSeqs_AllInSequenceSet()
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{
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var dir = UniqueDir();
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using (var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024))
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{
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for (var i = 0; i < 10; i++)
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block.Write($"subj", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray());
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block.Delete(1);
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block.Delete(3);
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block.Delete(5);
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block.Delete(7);
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block.Delete(9);
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block.Flush();
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}
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using var recovered = MsgBlock.Recover(0, dir);
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recovered.DeletedCount.ShouldBe(5UL);
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recovered.MessageCount.ShouldBe(5UL);
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for (ulong seq = 1; seq <= 9; seq += 2)
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recovered.IsDeleted(seq).ShouldBeTrue($"seq {seq} should be deleted");
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for (ulong seq = 2; seq <= 10; seq += 2)
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recovered.IsDeleted(seq).ShouldBeFalse($"seq {seq} should NOT be deleted");
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}
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// Skip records (WriteSkip) survive recovery and appear in SequenceSet.
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[Fact]
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public void MsgBlock_Recovery_SkipRecordsInSequenceSet()
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{
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var dir = UniqueDir();
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using (var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024, firstSequence: 1))
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{
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block.Write("a", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray()); // seq=1
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block.WriteSkip(2); // tombstone
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block.WriteSkip(3); // tombstone
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block.Write("b", ReadOnlyMemory<byte>.Empty, "payload"u8.ToArray()); // seq=4
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block.Flush();
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}
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using var recovered = MsgBlock.Recover(0, dir);
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// Seqs 2 and 3 are skip records → deleted.
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recovered.IsDeleted(2).ShouldBeTrue();
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recovered.IsDeleted(3).ShouldBeTrue();
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recovered.IsDeleted(1).ShouldBeFalse();
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recovered.IsDeleted(4).ShouldBeFalse();
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recovered.DeletedCount.ShouldBe(2UL);
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recovered.MessageCount.ShouldBe(2UL);
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}
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// -------------------------------------------------------------------------
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// Secure erase — payload bytes are overwritten with random data
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// -------------------------------------------------------------------------
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// Go: eraseMsg (filestore.go:5890) — payload bytes replaced with random bytes.
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[Fact]
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public void MsgBlock_SecureErase_OverwritesPayloadBytes()
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{
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var dir = UniqueDir();
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var original = Encoding.UTF8.GetBytes("this is a secret payload");
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using (var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024))
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{
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block.Write("secret", ReadOnlyMemory<byte>.Empty, original);
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// Perform secure erase — overwrites payload bytes in-place on disk.
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block.Delete(1, secureErase: true).ShouldBeTrue();
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block.Flush();
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}
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// Read the raw block file and verify the original payload bytes are gone.
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var blockFile = Path.Combine(dir, "000000.blk");
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var rawBytes = File.ReadAllBytes(blockFile);
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// The payload "this is a secret payload" should no longer appear as a substring.
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var payloadBytes = Encoding.UTF8.GetBytes("this is a secret");
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var rawAsSpan = rawBytes.AsSpan();
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var found = false;
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for (var i = 0; i <= rawBytes.Length - payloadBytes.Length; i++)
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{
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if (rawAsSpan[i..].StartsWith(payloadBytes.AsSpan()))
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{
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found = true;
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break;
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}
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}
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found.ShouldBeFalse("Secret payload bytes should have been overwritten by secure erase");
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}
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// After secure erase, the message appears deleted (returns null on Read).
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[Fact]
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public void MsgBlock_SecureErase_MessageAppearsDeleted()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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block.Write("sensitive", ReadOnlyMemory<byte>.Empty, "secret data"u8.ToArray());
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block.Write("other", ReadOnlyMemory<byte>.Empty, "normal"u8.ToArray());
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block.Delete(1, secureErase: true).ShouldBeTrue();
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block.IsDeleted(1).ShouldBeTrue();
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block.Read(1).ShouldBeNull();
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block.Read(2).ShouldNotBeNull(); // other message unaffected
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block.DeletedCount.ShouldBe(1UL);
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block.MessageCount.ShouldBe(1UL);
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}
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// Secure erase with secureErase=false is identical to regular delete (no overwrite).
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[Fact]
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public void MsgBlock_Delete_WithSecureEraseFalse_NormalDelete()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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block.Write("x", ReadOnlyMemory<byte>.Empty, "content"u8.ToArray());
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block.Delete(1, secureErase: false).ShouldBeTrue();
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block.IsDeleted(1).ShouldBeTrue();
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block.Read(1).ShouldBeNull();
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}
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// Double secure erase returns false on second call.
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[Fact]
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public void MsgBlock_SecureErase_DoubleErase_ReturnsFalse()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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block.Write("x", ReadOnlyMemory<byte>.Empty, "content"u8.ToArray());
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block.Delete(1, secureErase: true).ShouldBeTrue();
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block.Delete(1, secureErase: true).ShouldBeFalse(); // already deleted
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}
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// -------------------------------------------------------------------------
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// DeletedSequences property returns snapshot of SequenceSet
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// -------------------------------------------------------------------------
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// DeletedSequences snapshot contains all deleted seqs (still IReadOnlySet from HashSet copy).
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[Fact]
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public void DeletedSequences_ReturnsCorrectSnapshot()
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{
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var dir = UniqueDir();
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using var block = MsgBlock.Create(0, dir, maxBytes: 1024 * 1024);
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block.Write("a", ReadOnlyMemory<byte>.Empty, "one"u8.ToArray());
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block.Write("b", ReadOnlyMemory<byte>.Empty, "two"u8.ToArray());
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block.Write("c", ReadOnlyMemory<byte>.Empty, "three"u8.ToArray());
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block.Write("d", ReadOnlyMemory<byte>.Empty, "four"u8.ToArray());
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block.Delete(2);
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block.Delete(4);
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var snapshot = block.DeletedSequences;
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snapshot.Count.ShouldBe(2);
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snapshot.ShouldContain(2UL);
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snapshot.ShouldContain(4UL);
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snapshot.ShouldNotContain(1UL);
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snapshot.ShouldNotContain(3UL);
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}
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// -------------------------------------------------------------------------
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// FileStore EraseMsg integration
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// -------------------------------------------------------------------------
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// Go: eraseMsg — after EraseMsg, message is gone and state reflects deletion.
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[Fact]
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public void FileStore_EraseMsg_MessageGoneAfterErase()
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{
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var dir = UniqueDir();
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var opts = new FileStoreOptions { Directory = dir };
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using var store = new FileStore(opts);
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store.StoreMsg("foo", null, "secret"u8.ToArray(), 0);
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store.StoreMsg("foo", null, "normal"u8.ToArray(), 0);
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var state1 = store.State();
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state1.Msgs.ShouldBe(2UL);
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store.EraseMsg(1).ShouldBeTrue();
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var state2 = store.State();
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state2.Msgs.ShouldBe(1UL);
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// Erasing same seq twice returns false.
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store.EraseMsg(1).ShouldBeFalse();
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}
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// Go: TestFileStoreEraseMsgDoesNotLoseTombstones — erase does not disturb other tombstones.
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// Reference: filestore_test.go:10781
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[Fact]
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public void FileStore_EraseMsg_DoesNotLoseTombstones()
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{
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var dir = UniqueDir();
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var opts = new FileStoreOptions { Directory = dir };
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using var store = new FileStore(opts);
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store.StoreMsg("foo", null, [], 0); // seq=1
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store.StoreMsg("foo", null, [], 0); // seq=2 (tombstone)
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store.StoreMsg("foo", null, "secret"u8.ToArray(), 0); // seq=3 (erased)
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store.RemoveMsg(2); // tombstone seq=2
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store.StoreMsg("foo", null, [], 0); // seq=4
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store.EraseMsg(3); // erase seq=3
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var state = store.State();
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state.Msgs.ShouldBe(2UL); // msgs 1 and 4 remain
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state.NumDeleted.ShouldBe(2); // seqs 2 and 3 deleted
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state.Deleted.ShouldNotBeNull();
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state.Deleted!.ShouldContain(2UL);
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state.Deleted.ShouldContain(3UL);
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// Restart — state should be identical.
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store.Dispose();
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using var store2 = new FileStore(opts);
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var after = store2.State();
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after.Msgs.ShouldBe(2UL);
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after.NumDeleted.ShouldBe(2);
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after.Deleted.ShouldNotBeNull();
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after.Deleted!.ShouldContain(2UL);
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after.Deleted.ShouldContain(3UL);
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}
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}
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