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.
2026-03-12 15:58:10 -04:00
parent 36b9dfa654
commit 78b4bc2486
228 changed files with 253 additions and 227 deletions
--- a/tests/NATS.Server.JetStream.Tests/MirrorSourceRetryTests.cs
+++ b/tests/NATS.Server.JetStream.Tests/MirrorSourceRetryTests.cs
@@ -0,0 +1,110 @@
+using NSubstitute;
+using NATS.Server.JetStream.MirrorSource;
+using NATS.Server.JetStream.Models;
+using NATS.Server.JetStream.Storage;
+
+namespace NATS.Server.JetStream.Tests;
+
+// Go reference: server/stream.go:3478-3505 (calculateRetryBackoff),
+// server/stream.go:3125-3400 (setupMirrorConsumer retry logic)
+
+public class MirrorSourceRetryTests
+{
+    [Fact]
+    public void Mirror_retry_uses_exponential_backoff()
+    {
+        // Go reference: server/stream.go:3478-3505 calculateRetryBackoff
+        var mirror = MirrorCoordinatorTestHelper.Create();
+
+        mirror.RecordFailure();
+        var delay1 = mirror.GetRetryDelay();
+        delay1.ShouldBeGreaterThanOrEqualTo(TimeSpan.FromMilliseconds(250));
+
+        mirror.RecordFailure();
+        var delay2 = mirror.GetRetryDelay();
+        delay2.ShouldBeGreaterThan(delay1);
+
+        // Cap at max
+        for (int i = 0; i < 20; i++) mirror.RecordFailure();
+        var delayMax = mirror.GetRetryDelay();
+        delayMax.ShouldBeLessThanOrEqualTo(TimeSpan.FromSeconds(30));
+    }
+
+    [Fact]
+    public void Mirror_success_resets_backoff()
+    {
+        // Go reference: server/stream.go setupMirrorConsumer — success resets retry
+        var mirror = MirrorCoordinatorTestHelper.Create();
+
+        for (int i = 0; i < 5; i++) mirror.RecordFailure();
+        mirror.RecordSuccess();
+
+        var delay = mirror.GetRetryDelay();
+        delay.ShouldBe(TimeSpan.FromMilliseconds(250));
+    }
+
+    [Fact]
+    public void Mirror_tracks_sequence_gap()
+    {
+        // Go reference: server/stream.go:2863-3014 processInboundMirrorMsg — gap detection
+        var mirror = MirrorCoordinatorTestHelper.Create();
+
+        mirror.RecordSourceSeq(1);
+        mirror.RecordSourceSeq(2);
+        mirror.RecordSourceSeq(5); // gap: 3, 4 missing
+
+        mirror.HasGap.ShouldBeTrue();
+        mirror.GapStart.ShouldBe(3UL);
+        mirror.GapEnd.ShouldBe(4UL);
+    }
+
+    [Fact]
+    public void Mirror_tracks_error_state()
+    {
+        // Go reference: server/stream.go mirror error state tracking
+        var mirror = MirrorCoordinatorTestHelper.Create();
+
+        mirror.SetError("connection refused");
+        mirror.HasError.ShouldBeTrue();
+        mirror.ErrorMessage.ShouldBe("connection refused");
+
+        mirror.ClearError();
+        mirror.HasError.ShouldBeFalse();
+    }
+
+    [Fact]
+    public void Source_dedup_window_prunes_expired()
+    {
+        // Go reference: server/stream.go duplicate window pruning
+        var source = SourceCoordinatorTestHelper.Create();
+
+        source.RecordMsgId("msg-1");
+        source.RecordMsgId("msg-2");
+
+        source.IsDuplicate("msg-1").ShouldBeTrue();
+        source.IsDuplicate("msg-3").ShouldBeFalse();
+
+        // Simulate time passing beyond dedup window
+        source.PruneDedupWindow(DateTimeOffset.UtcNow.AddMinutes(5));
+        source.IsDuplicate("msg-1").ShouldBeFalse();
+    }
+}
+
+public static class MirrorCoordinatorTestHelper
+{
+    public static MirrorCoordinator Create()
+    {
+        var store = Substitute.For<IStreamStore>();
+        return new MirrorCoordinator(store);
+    }
+}
+
+public static class SourceCoordinatorTestHelper
+{
+    public static SourceCoordinator Create()
+    {
+        var store = Substitute.For<IStreamStore>();
+        var config = new StreamSourceConfig { Name = "test-source", DuplicateWindowMs = 60_000 };
+        return new SourceCoordinator(store, config);
+    }
+}