test: add E2E MQTT bridge tests (pub/sub, different-topic isolation, QoS 1)

2026-03-12 19:54:30 -04:00
parent c9b55093a4
commit e4d275c929
2 changed files with 208 additions and 0 deletions
--- a/tests/NATS.E2E.Tests/Infrastructure/MqttServerFixture.cs
+++ b/tests/NATS.E2E.Tests/Infrastructure/MqttServerFixture.cs
@@ -0,0 +1,50 @@
+using NATS.Client.Core;
+
+namespace NATS.E2E.Tests.Infrastructure;
+
+public sealed class MqttServerFixture : IAsyncLifetime
+{
+    private NatsServerProcess _server = null!;
+    private string _storeDir = null!;
+
+    public int Port => _server.Port;
+    public int MqttPort { get; private set; }
+
+    public async Task InitializeAsync()
+    {
+        MqttPort = NatsServerProcess.AllocateFreePort();
+        _storeDir = Path.Combine(Path.GetTempPath(), "nats-e2e-mqtt-" + Guid.NewGuid().ToString("N")[..8]);
+        Directory.CreateDirectory(_storeDir);
+
+        var config = $$"""
+            jetstream {
+                store_dir: "{{_storeDir}}"
+                max_mem_store: 64mb
+                max_file_store: 256mb
+            }
+            mqtt {
+                listen: 127.0.0.1:{{MqttPort}}
+            }
+            """;
+
+        _server = NatsServerProcess.WithConfig(config);
+        await _server.StartAsync();
+    }
+
+    public async Task DisposeAsync()
+    {
+        await _server.DisposeAsync();
+
+        if (_storeDir is not null && Directory.Exists(_storeDir))
+        {
+            try { Directory.Delete(_storeDir, recursive: true); }
+            catch (IOException ex) { _ = ex; /* best-effort temp dir cleanup */ }
+        }
+    }
+
+    public NatsConnection CreateNatsClient()
+        => new(new NatsOpts { Url = $"nats://127.0.0.1:{Port}" });
+}
+
+[CollectionDefinition("E2E-Mqtt")]
+public class MqttCollection : ICollectionFixture<MqttServerFixture>;