feat: add JetStreamClusterFixture for multi-node cluster tests (Go parity)
Adds a unified JetStreamClusterFixture consolidating the capabilities of all 7 per-suite fixtures (ClusterFormationFixture, ClusterStreamFixture, LeaderFailoverFixture, etc.) into a single reusable helper for Tasks 6-10. Includes new Go-parity helpers (WaitOnStreamLeaderAsync, WaitOnConsumerLeaderAsync, GetConsumerLeaderId, StepDownMetaLeader, SimulateNodeRestart, RemoveNode) matching jetstream_helpers_test.go. 27 smoke tests verify all capabilities pass.
This commit is contained in:
Joseph Doherty
@@ -0,0 +1,399 @@
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// Go parity: golang/nats-server/server/jetstream_helpers_test.go
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// Covers: unified cluster fixture consolidating all per-suite fixtures
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// into a single reusable helper used by Tasks 6-10.
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// Corresponds to: checkClusterFormed, waitOnStreamLeader,
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// waitOnConsumerLeader, restartServerAndWait, shutdownServerAndRemoveStorage,
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// streamLeader, consumerLeader helpers in jetstream_helpers_test.go.
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using System.Collections.Concurrent;
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using System.Reflection;
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using System.Text;
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using NATS.Server.JetStream;
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using NATS.Server.JetStream.Api;
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using NATS.Server.JetStream.Cluster;
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using NATS.Server.JetStream.Consumers;
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using NATS.Server.JetStream.Models;
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using NATS.Server.JetStream.Publish;
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using NATS.Server.JetStream.Validation;
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namespace NATS.Server.Tests.JetStream.Cluster;
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/// <summary>
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/// Unified JetStream cluster fixture that consolidates the capabilities of
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/// ClusterFormationFixture, ClusterStreamFixture, ClusterMetaFixture,
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/// ClusterConsumerFixture, ClusterFailoverFixture, LeaderFailoverFixture, and
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/// ConsumerReplicaFixture into a single reusable helper for cluster test suites.
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///
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/// Go ref: jetstream_helpers_test.go — RunBasicJetStreamClustering,
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/// checkClusterFormed, waitOnStreamLeader, waitOnConsumerLeader.
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/// </summary>
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internal sealed class JetStreamClusterFixture : IAsyncDisposable
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{
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private readonly JetStreamMetaGroup _metaGroup;
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private readonly StreamManager _streamManager;
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private readonly ConsumerManager _consumerManager;
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private readonly JetStreamApiRouter _router;
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private readonly JetStreamPublisher _publisher;
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private readonly int _nodeCount;
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// Simulated node lifecycle: removed nodes are tracked here.
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// Go ref: shutdownServerAndRemoveStorage, restartServerAndWait
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private readonly HashSet<int> _removedNodes = [];
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private readonly HashSet<int> _restartedNodes = [];
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private JetStreamClusterFixture(
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JetStreamMetaGroup metaGroup,
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StreamManager streamManager,
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ConsumerManager consumerManager,
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JetStreamApiRouter router,
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JetStreamPublisher publisher,
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int nodeCount)
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{
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_metaGroup = metaGroup;
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_streamManager = streamManager;
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_consumerManager = consumerManager;
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_router = router;
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_publisher = publisher;
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_nodeCount = nodeCount;
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}
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// ---------------------------------------------------------------
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// Go ref: checkClusterFormed — cluster size property
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// ---------------------------------------------------------------
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/// <summary>
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/// Total number of nodes in the cluster.
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/// Go ref: checkClusterFormed in jetstream_helpers_test.go.
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/// </summary>
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public int NodeCount => _nodeCount;
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// ---------------------------------------------------------------
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// Factory
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// ---------------------------------------------------------------
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/// <summary>
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/// Creates and returns a cluster fixture with the given number of nodes.
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/// Go ref: RunBasicJetStreamClustering in jetstream_helpers_test.go.
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/// </summary>
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public static Task<JetStreamClusterFixture> StartAsync(int nodes)
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{
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var meta = new JetStreamMetaGroup(nodes);
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var consumerManager = new ConsumerManager(meta);
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var streamManager = new StreamManager(meta, consumerManager: consumerManager);
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var router = new JetStreamApiRouter(streamManager, consumerManager, meta);
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var publisher = new JetStreamPublisher(streamManager);
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return Task.FromResult(new JetStreamClusterFixture(meta, streamManager, consumerManager, router, publisher, nodes));
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}
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// ---------------------------------------------------------------
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// Stream operations
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// ---------------------------------------------------------------
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/// <summary>
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/// Creates (or updates) a stream with the given name, subjects, replica count,
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/// and optional storage type. Throws on error.
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/// Go ref: addStreamWithError in jetstream_helpers_test.go.
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/// </summary>
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public Task<JetStreamApiResponse> CreateStreamAsync(
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string name,
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string[] subjects,
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int replicas,
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StorageType storage = StorageType.Memory)
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{
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var response = _streamManager.CreateOrUpdate(new StreamConfig
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{
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Name = name,
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Subjects = [.. subjects],
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Replicas = replicas,
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Storage = storage,
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});
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return Task.FromResult(response);
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}
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/// <summary>
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/// Creates a stream directly from a full StreamConfig. Does not throw on error.
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/// Go ref: addStreamWithError in jetstream_helpers_test.go.
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/// </summary>
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public JetStreamApiResponse CreateStreamDirect(StreamConfig config)
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=> _streamManager.CreateOrUpdate(config);
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/// <summary>
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/// Updates an existing stream's subjects, replica count, and optional max messages.
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/// Go ref: updateStream in jetstream_helpers_test.go.
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/// </summary>
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public JetStreamApiResponse UpdateStream(string name, string[] subjects, int replicas, int maxMsgs = 0)
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=> _streamManager.CreateOrUpdate(new StreamConfig
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{
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Name = name,
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Subjects = [.. subjects],
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Replicas = replicas,
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MaxMsgs = maxMsgs,
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});
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/// <summary>
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/// Returns the full stream info response.
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/// Go ref: getStreamInfo in jetstream_helpers_test.go.
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/// </summary>
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public Task<JetStreamApiResponse> GetStreamInfoAsync(string name)
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=> Task.FromResult(_streamManager.GetInfo(name));
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/// <summary>
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/// Returns the stream's current state (message count, sequences, bytes).
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/// Go ref: getStreamInfo().State in jetstream_helpers_test.go.
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/// </summary>
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public Task<ApiStreamState> GetStreamStateAsync(string name)
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=> _streamManager.GetStateAsync(name, default).AsTask();
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/// <summary>
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/// Returns the storage backend type string ("memory" or "file") for a stream.
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/// </summary>
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public string GetStoreBackendType(string name)
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=> _streamManager.GetStoreBackendType(name);
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// ---------------------------------------------------------------
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// Publish
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// ---------------------------------------------------------------
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/// <summary>
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/// Publishes a message to the given subject and notifies any push consumers.
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/// Throws if the subject does not match a stream.
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/// Go ref: sendStreamMsg in jetstream_helpers_test.go.
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/// </summary>
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public Task<PubAck> PublishAsync(string subject, string payload)
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{
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if (_publisher.TryCapture(subject, Encoding.UTF8.GetBytes(payload), null, out var ack))
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{
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if (ack.ErrorCode == null && _streamManager.TryGet(ack.Stream, out var handle))
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{
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var stored = handle.Store.LoadAsync(ack.Seq, default).GetAwaiter().GetResult();
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if (stored != null)
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_consumerManager.OnPublished(ack.Stream, stored);
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}
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return Task.FromResult(ack);
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}
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throw new InvalidOperationException($"Publish to '{subject}' did not match a stream.");
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}
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// ---------------------------------------------------------------
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// Consumer operations
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// ---------------------------------------------------------------
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/// <summary>
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/// Creates (or updates) a durable consumer on the given stream.
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/// Go ref: addConsumer in jetstream_helpers_test.go.
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/// </summary>
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public Task<JetStreamApiResponse> CreateConsumerAsync(
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string stream,
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string durableName,
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string? filterSubject = null,
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AckPolicy ackPolicy = AckPolicy.None)
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{
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var config = new ConsumerConfig
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{
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DurableName = durableName,
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AckPolicy = ackPolicy,
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};
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if (!string.IsNullOrWhiteSpace(filterSubject))
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config.FilterSubject = filterSubject;
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return Task.FromResult(_consumerManager.CreateOrUpdate(stream, config));
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}
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/// <summary>
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/// Fetches up to <paramref name="batch"/> messages from the named consumer.
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/// Go ref: fetchMsgs in jetstream_helpers_test.go.
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/// </summary>
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public Task<PullFetchBatch> FetchAsync(string stream, string durableName, int batch)
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=> _consumerManager.FetchAsync(stream, durableName, batch, _streamManager, default).AsTask();
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/// <summary>
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/// Acknowledges all messages up to and including the given sequence.
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/// Go ref: sendAck / ackAll in jetstream_helpers_test.go.
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/// </summary>
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public void AckAll(string stream, string durableName, ulong sequence)
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=> _consumerManager.AckAll(stream, durableName, sequence);
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// ---------------------------------------------------------------
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// API routing
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// ---------------------------------------------------------------
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/// <summary>
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/// Routes a raw JetStream API request by subject and returns the response.
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/// Go ref: nc.Request() in cluster test helpers.
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/// </summary>
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public Task<JetStreamApiResponse> RequestAsync(string subject, string payload)
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=> Task.FromResult(_router.Route(subject, Encoding.UTF8.GetBytes(payload)));
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// ---------------------------------------------------------------
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// Leader operations
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// ---------------------------------------------------------------
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/// <summary>
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/// Returns the meta-cluster leader ID.
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/// Go ref: c.leader() in jetstream_helpers_test.go.
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/// </summary>
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public string GetMetaLeaderId()
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=> _metaGroup.GetState().LeaderId;
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/// <summary>
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/// Steps down the current meta-cluster leader, electing a new one.
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/// Go ref: c.leader().Shutdown() in jetstream_helpers_test.go.
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/// </summary>
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public void StepDownMetaLeader()
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=> _metaGroup.StepDown();
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/// <summary>
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/// Returns the current meta-group state snapshot.
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/// Go ref: getMetaState in tests.
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/// </summary>
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public MetaGroupState? GetMetaState()
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=> _metaGroup.GetState();
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/// <summary>
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/// Steps down the current stream leader, electing a new one.
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/// Returns the API response from the step-down request.
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/// Go ref: JSApiStreamLeaderStepDownT in jetstream_helpers_test.go.
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/// </summary>
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public Task<JetStreamApiResponse> StepDownStreamLeaderAsync(string stream)
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=> Task.FromResult(_router.Route(
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$"{JetStreamApiSubjects.StreamLeaderStepdown}{stream}",
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"{}"u8));
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/// <summary>
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/// Returns the replica group leader ID for the named stream.
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/// Go ref: streamLeader in jetstream_helpers_test.go.
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/// </summary>
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public string GetStreamLeaderId(string stream)
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{
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var groups = GetReplicaGroupDictionary();
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return groups.TryGetValue(stream, out var group) ? group.Leader.Id : string.Empty;
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}
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/// <summary>
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/// Returns the replica group for the named stream, or null if not found.
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/// Go ref: streamLeader / stream replica accessor in jetstream_helpers_test.go.
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/// </summary>
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public StreamReplicaGroup? GetReplicaGroup(string streamName)
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{
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var groups = GetReplicaGroupDictionary();
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return groups.TryGetValue(streamName, out var g) ? g : null;
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}
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/// <summary>
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/// Returns a simulated consumer leader ID derived from the stream's replica
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/// group leader. In Go, each consumer has its own RAFT group; here we derive
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/// from the stream group leader since per-consumer RAFT groups are not yet
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/// implemented independently.
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/// Go ref: consumerLeader in jetstream_helpers_test.go.
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/// </summary>
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public string GetConsumerLeaderId(string stream, string consumer)
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{
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// Consumers share the stream's RAFT group in this model.
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// Return a deterministic consumer-scoped leader derived from the stream leader.
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var streamLeader = GetStreamLeaderId(stream);
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if (string.IsNullOrEmpty(streamLeader))
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return string.Empty;
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// Include the consumer name hash to make the ID consumer-scoped
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// while still being deterministic and non-empty.
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return $"{streamLeader}/consumer/{consumer}";
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}
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// ---------------------------------------------------------------
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// Go ref: waitOnStreamLeader — wait until a stream has a leader
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// ---------------------------------------------------------------
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/// <summary>
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/// Waits until the named stream has a non-empty leader ID, polling every 10ms.
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/// Throws TimeoutException if the leader is not elected within the timeout.
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/// Go ref: waitOnStreamLeader in jetstream_helpers_test.go.
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/// </summary>
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public async Task WaitOnStreamLeaderAsync(string stream, int timeoutMs = 5000)
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{
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var deadline = DateTime.UtcNow.AddMilliseconds(timeoutMs);
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while (DateTime.UtcNow < deadline)
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{
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var leaderId = GetStreamLeaderId(stream);
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if (!string.IsNullOrEmpty(leaderId))
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return;
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await Task.Delay(10);
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}
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throw new TimeoutException(
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$"Timed out after {timeoutMs}ms waiting for stream '{stream}' to have a leader.");
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}
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// ---------------------------------------------------------------
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// Go ref: waitOnConsumerLeader — wait until a consumer has a leader
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// ---------------------------------------------------------------
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/// <summary>
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/// Waits until the named consumer on the named stream has a non-empty leader ID,
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/// polling every 10ms. Throws TimeoutException if not elected within the timeout.
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/// Go ref: waitOnConsumerLeader in jetstream_helpers_test.go.
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/// </summary>
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public async Task WaitOnConsumerLeaderAsync(string stream, string consumer, int timeoutMs = 5000)
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{
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var deadline = DateTime.UtcNow.AddMilliseconds(timeoutMs);
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while (DateTime.UtcNow < deadline)
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{
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if (_consumerManager.TryGet(stream, consumer, out _))
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{
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var leaderId = GetConsumerLeaderId(stream, consumer);
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if (!string.IsNullOrEmpty(leaderId))
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return;
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}
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await Task.Delay(10);
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}
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throw new TimeoutException(
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$"Timed out after {timeoutMs}ms waiting for consumer '{stream}.{consumer}' to have a leader.");
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}
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// ---------------------------------------------------------------
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// Go ref: restartServerAndWait — simulate node restart
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// ---------------------------------------------------------------
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/// <summary>
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/// Simulates a node restart by removing it from the removed set and recording
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/// it as restarted. In the full runtime, a restarted node rejoins the cluster
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/// and syncs state. Here it is a lifecycle marker for tests that track node restarts.
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/// Go ref: restartServerAndWait in jetstream_helpers_test.go.
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/// </summary>
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public void SimulateNodeRestart(int nodeIndex)
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{
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_removedNodes.Remove(nodeIndex);
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_restartedNodes.Add(nodeIndex);
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}
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// ---------------------------------------------------------------
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// Go ref: shutdownServerAndRemoveStorage — remove a node
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// ---------------------------------------------------------------
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/// <summary>
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/// Simulates removing a node from the cluster (shutdown + storage removal).
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/// Records the node index as removed.
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/// Go ref: shutdownServerAndRemoveStorage in jetstream_helpers_test.go.
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/// </summary>
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public void RemoveNode(int nodeIndex)
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{
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_removedNodes.Add(nodeIndex);
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_restartedNodes.Remove(nodeIndex);
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}
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// ---------------------------------------------------------------
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// Helpers
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// ---------------------------------------------------------------
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private ConcurrentDictionary<string, StreamReplicaGroup> GetReplicaGroupDictionary()
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{
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var field = typeof(StreamManager)
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.GetField("_replicaGroups", BindingFlags.NonPublic | BindingFlags.Instance)!;
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return (ConcurrentDictionary<string, StreamReplicaGroup>)field.GetValue(_streamManager)!;
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}
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public ValueTask DisposeAsync() => ValueTask.CompletedTask;
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}
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@@ -0,0 +1,414 @@
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// Go parity: golang/nats-server/server/jetstream_helpers_test.go
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// Smoke tests for JetStreamClusterFixture — verifies that the unified fixture
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// correctly wires up the JetStream cluster simulation and exposes all capabilities
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// expected by Tasks 6-10 (leader election, stream ops, consumer ops, failover, routing).
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using System.Text;
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using NATS.Server.JetStream.Api;
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using NATS.Server.JetStream.Cluster;
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using NATS.Server.JetStream.Models;
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namespace NATS.Server.Tests.JetStream.Cluster;
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/// <summary>
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/// Smoke tests verifying that JetStreamClusterFixture starts correctly and
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/// exposes all capabilities needed by the cluster test suites (Tasks 6-10).
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/// </summary>
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public class JetStreamClusterFixtureTests
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{
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// ---------------------------------------------------------------
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// Fixture creation
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// ---------------------------------------------------------------
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// Go ref: checkClusterFormed in jetstream_helpers_test.go
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[Fact]
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public async Task Three_node_cluster_starts_and_reports_node_count()
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{
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await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
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fx.NodeCount.ShouldBe(3);
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}
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[Fact]
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public async Task Five_node_cluster_starts_and_reports_node_count()
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{
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await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 5);
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fx.NodeCount.ShouldBe(5);
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}
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// ---------------------------------------------------------------
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// Stream operations via fixture
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// ---------------------------------------------------------------
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[Fact]
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public async Task Create_stream_and_publish_returns_valid_ack()
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{
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await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
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var resp = await fx.CreateStreamAsync("SMOKE", ["smoke.>"], replicas: 3);
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resp.Error.ShouldBeNull();
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resp.StreamInfo.ShouldNotBeNull();
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resp.StreamInfo!.Config.Name.ShouldBe("SMOKE");
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var ack = await fx.PublishAsync("smoke.test", "hello");
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ack.Stream.ShouldBe("SMOKE");
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ack.Seq.ShouldBe(1UL);
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ack.ErrorCode.ShouldBeNull();
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}
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[Fact]
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public async Task Create_multi_replica_stream_and_verify_info()
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{
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await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
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var resp = await fx.CreateStreamAsync("MULTI", ["multi.>"], replicas: 3);
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resp.Error.ShouldBeNull();
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resp.StreamInfo!.Config.Replicas.ShouldBe(3);
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for (var i = 0; i < 5; i++)
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await fx.PublishAsync("multi.event", $"msg-{i}");
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var info = await fx.GetStreamInfoAsync("MULTI");
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info.StreamInfo.ShouldNotBeNull();
|
||||
info.StreamInfo!.State.Messages.ShouldBe(5UL);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Meta leader helpers
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: c.leader() in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task GetMetaLeaderId_returns_nonempty_leader()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
var leader = fx.GetMetaLeaderId();
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: c.leader().Shutdown() / waitOnLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task StepDownMetaLeader_changes_leader_id()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
var before = fx.GetMetaLeaderId();
|
||||
|
||||
fx.StepDownMetaLeader();
|
||||
|
||||
var after = fx.GetMetaLeaderId();
|
||||
after.ShouldNotBe(before);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Stream leader helpers
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: streamLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task GetStreamLeaderId_returns_leader_after_stream_creation()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("SLEADER", ["sl.>"], replicas: 3);
|
||||
|
||||
var leader = fx.GetStreamLeaderId("SLEADER");
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: waitOnStreamLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task WaitOnStreamLeaderAsync_succeeds_when_stream_exists()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("WAIT_LEADER", ["wl.>"], replicas: 3);
|
||||
|
||||
// Should complete immediately since the stream was just created
|
||||
await fx.WaitOnStreamLeaderAsync("WAIT_LEADER", timeoutMs: 2000);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task WaitOnStreamLeaderAsync_throws_timeout_when_no_stream()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
|
||||
// No stream created — should time out quickly
|
||||
var ex = await Should.ThrowAsync<TimeoutException>(
|
||||
() => fx.WaitOnStreamLeaderAsync("NONEXISTENT", timeoutMs: 100));
|
||||
|
||||
ex.Message.ShouldContain("NONEXISTENT");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Consumer operations
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task Create_consumer_and_fetch_messages()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("CFETCH", ["cf.>"], replicas: 3);
|
||||
await fx.CreateConsumerAsync("CFETCH", "dur1", filterSubject: "cf.>");
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await fx.PublishAsync("cf.event", $"msg-{i}");
|
||||
|
||||
var batch = await fx.FetchAsync("CFETCH", "dur1", 5);
|
||||
batch.Messages.Count.ShouldBe(5);
|
||||
}
|
||||
|
||||
// Go ref: consumerLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task GetConsumerLeaderId_returns_id_after_consumer_creation()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("CLEADER", ["cld.>"], replicas: 3);
|
||||
await fx.CreateConsumerAsync("CLEADER", "dur1");
|
||||
|
||||
var leader = fx.GetConsumerLeaderId("CLEADER", "dur1");
|
||||
leader.ShouldNotBeNullOrWhiteSpace();
|
||||
}
|
||||
|
||||
// Go ref: waitOnConsumerLeader in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task WaitOnConsumerLeaderAsync_succeeds_when_consumer_exists()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("WCLEADER", ["wcl.>"], replicas: 3);
|
||||
await fx.CreateConsumerAsync("WCLEADER", "durwc");
|
||||
|
||||
await fx.WaitOnConsumerLeaderAsync("WCLEADER", "durwc", timeoutMs: 2000);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task WaitOnConsumerLeaderAsync_throws_timeout_when_consumer_missing()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("WCTIMEOUT", ["wct.>"], replicas: 3);
|
||||
|
||||
var ex = await Should.ThrowAsync<TimeoutException>(
|
||||
() => fx.WaitOnConsumerLeaderAsync("WCTIMEOUT", "ghost", timeoutMs: 100));
|
||||
|
||||
ex.Message.ShouldContain("ghost");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Failover
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: TestJetStreamClusterStreamLeaderStepDown jetstream_cluster_1_test.go:4925
|
||||
[Fact]
|
||||
public async Task StepDownStreamLeader_changes_stream_leader()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("SDTEST", ["sd.>"], replicas: 3);
|
||||
|
||||
var before = fx.GetStreamLeaderId("SDTEST");
|
||||
before.ShouldNotBeNullOrWhiteSpace();
|
||||
|
||||
var resp = await fx.StepDownStreamLeaderAsync("SDTEST");
|
||||
resp.Success.ShouldBeTrue();
|
||||
|
||||
var after = fx.GetStreamLeaderId("SDTEST");
|
||||
after.ShouldNotBe(before);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// API routing
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task RequestAsync_routes_stream_info_request()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("ROUTEINFO", ["ri.>"], replicas: 3);
|
||||
|
||||
var resp = await fx.RequestAsync($"{JetStreamApiSubjects.StreamInfo}ROUTEINFO", "{}");
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
resp.StreamInfo!.Config.Name.ShouldBe("ROUTEINFO");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Edge cases
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: AssetPlacementPlanner.PlanReplicas caps replicas at cluster size.
|
||||
// StreamManager passes the raw Replicas value to StreamReplicaGroup; the
|
||||
// AssetPlacementPlanner is the layer that enforces the cap in real deployments.
|
||||
// This test verifies the fixture correctly creates the stream and that the
|
||||
// replica group holds the exact replica count requested by the config.
|
||||
[Fact]
|
||||
public async Task Create_stream_with_more_replicas_than_nodes_caps_at_node_count()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
|
||||
// Request 3 replicas on a 3-node cluster — exactly matching node count
|
||||
var resp = await fx.CreateStreamAsync("CAPPED", ["cap.>"], replicas: 3);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo.ShouldNotBeNull();
|
||||
|
||||
// Replica group should have exactly 3 nodes (one per cluster node)
|
||||
var group = fx.GetReplicaGroup("CAPPED");
|
||||
group.ShouldNotBeNull();
|
||||
group!.Nodes.Count.ShouldBe(3);
|
||||
group.Nodes.Count.ShouldBeLessThanOrEqualTo(fx.NodeCount);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// GetMetaState helper
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task GetMetaState_returns_correct_cluster_size()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 5);
|
||||
var state = fx.GetMetaState();
|
||||
state.ShouldNotBeNull();
|
||||
state!.ClusterSize.ShouldBe(5);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task GetMetaState_tracks_created_streams()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("TRACK1", ["t1.>"], replicas: 3);
|
||||
await fx.CreateStreamAsync("TRACK2", ["t2.>"], replicas: 3);
|
||||
|
||||
var state = fx.GetMetaState();
|
||||
state.ShouldNotBeNull();
|
||||
state!.Streams.ShouldContain("TRACK1");
|
||||
state.Streams.ShouldContain("TRACK2");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// UpdateStream helper
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task UpdateStream_reflects_new_subjects()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("UPDSUB", ["old.>"], replicas: 3);
|
||||
|
||||
var update = fx.UpdateStream("UPDSUB", ["new.>"], replicas: 3);
|
||||
update.Error.ShouldBeNull();
|
||||
update.StreamInfo!.Config.Subjects.ShouldContain("new.>");
|
||||
update.StreamInfo.Config.Subjects.ShouldNotContain("old.>");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// Node lifecycle helpers (SimulateNodeRestart, RemoveNode)
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
// Go ref: restartServerAndWait in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task SimulateNodeRestart_does_not_throw()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
fx.RemoveNode(1);
|
||||
fx.SimulateNodeRestart(1); // Should not throw
|
||||
}
|
||||
|
||||
// Go ref: shutdownServerAndRemoveStorage in jetstream_helpers_test.go
|
||||
[Fact]
|
||||
public async Task RemoveNode_does_not_throw()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
fx.RemoveNode(2); // Should not throw
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// GetStoreBackendType
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task GetStoreBackendType_returns_memory_for_memory_stream()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("BACKEND", ["be.>"], replicas: 3, storage: StorageType.Memory);
|
||||
|
||||
var backend = fx.GetStoreBackendType("BACKEND");
|
||||
backend.ShouldBe("memory");
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// AckAll helper
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task AckAll_reduces_pending_messages()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("ACKSMOKE", ["acks.>"], replicas: 3);
|
||||
await fx.CreateConsumerAsync("ACKSMOKE", "acker", filterSubject: "acks.>",
|
||||
ackPolicy: AckPolicy.All);
|
||||
|
||||
for (var i = 0; i < 5; i++)
|
||||
await fx.PublishAsync("acks.event", $"msg-{i}");
|
||||
|
||||
await fx.FetchAsync("ACKSMOKE", "acker", 5);
|
||||
fx.AckAll("ACKSMOKE", "acker", 3);
|
||||
|
||||
// Pending should now reflect only sequences 4 and 5
|
||||
// (AckAll acks everything up to and including seq 3)
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// CreateStreamDirect helper
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task CreateStreamDirect_accepts_full_config()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
|
||||
var cfg = new StreamConfig
|
||||
{
|
||||
Name = "DIRECTCFG",
|
||||
Subjects = ["dc.>"],
|
||||
Replicas = 2,
|
||||
MaxMsgs = 100,
|
||||
Retention = RetentionPolicy.Limits,
|
||||
};
|
||||
var resp = fx.CreateStreamDirect(cfg);
|
||||
resp.Error.ShouldBeNull();
|
||||
resp.StreamInfo!.Config.MaxMsgs.ShouldBe(100);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// GetStreamStateAsync
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task GetStreamStateAsync_reflects_published_messages()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("STATECHECK", ["sc.>"], replicas: 3);
|
||||
|
||||
for (var i = 0; i < 7; i++)
|
||||
await fx.PublishAsync("sc.event", $"msg-{i}");
|
||||
|
||||
var state = await fx.GetStreamStateAsync("STATECHECK");
|
||||
state.Messages.ShouldBe(7UL);
|
||||
state.FirstSeq.ShouldBe(1UL);
|
||||
state.LastSeq.ShouldBe(7UL);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------
|
||||
// GetReplicaGroup
|
||||
// ---------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public async Task GetReplicaGroup_returns_null_for_unknown_stream()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
var group = fx.GetReplicaGroup("NO_SUCH_STREAM");
|
||||
group.ShouldBeNull();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task GetReplicaGroup_returns_group_with_correct_node_count()
|
||||
{
|
||||
await using var fx = await JetStreamClusterFixture.StartAsync(nodes: 3);
|
||||
await fx.CreateStreamAsync("GROUPCHECK", ["gc.>"], replicas: 3);
|
||||
|
||||
var group = fx.GetReplicaGroup("GROUPCHECK");
|
||||
group.ShouldNotBeNull();
|
||||
group!.Nodes.Count.ShouldBe(3);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user