test(batch38-t5): add perf/race/mqtt/benchmark mapped tests

dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Server/MqttHandlerTests.cs

@@ -16,4 +16,34 @@ public sealed class MqttHandlerTests
         err.ErrCode.ShouldBe(JsApiErrors.StreamReplicasNotSupported.ErrCode);
         err.Description.ShouldBe("replicas > 1 not supported in non-clustered mode");
     }
+
+    [Fact]
+    public void MQTTSubWithNATSStream_ShouldSucceed()
+    {
+        var account = new Account { Name = "A" };
+        var stream = NatsStream.Create(
+            account,
+            new StreamConfig { Name = "MQTT", Subjects = ["mqtt.>"], Storage = StorageType.MemoryStorage },
+            null,
+            null,
+            null,
+            null);
+
+        stream.ShouldNotBeNull();
+
+        var (consumer, error) = stream!.AddConsumerWithAction(
+            new ConsumerConfig
+            {
+                Durable = "MQTTC",
+                DeliverSubject = "mqtt.deliver",
+                AckPolicy = AckPolicy.AckExplicit,
+            },
+            oname: "MQTTC",
+            action: ConsumerAction.Create,
+            pedantic: false);
+
+        error.ShouldBeNull();
+        consumer.ShouldNotBeNull();
+        consumer!.GetInfo().Stream.ShouldBe("MQTT");
+    }
 }