Add Can_specify_db_on_RedisSentinel() test

Author: mythz

src/ServiceStack.Redis/RedisSentinelWorker.cs

@@ -26,8 +26,10 @@ public RedisSentinelWorker(RedisSentinel redisSentinel, string host, string sent
             this.redisSentinel = redisSentinel;
             this.redisManager = redisSentinel.redisManager;
             this.sentinelName = sentinelName;
-            this.sentinelClient = new RedisClient(host);
-            this.sentinelPubSubClient = new RedisClient(host);
+
+            //Sentinel Servers doesn't support DB, reset to 0
+            this.sentinelClient = new RedisClient(host) { Db = 0 };
+            this.sentinelPubSubClient = new RedisClient(host) { Db = 0 };
             this.sentinelSubscription = this.sentinelPubSubClient.CreateSubscription();
             this.sentinelSubscription.OnMessage = SentinelMessageReceived;
 

tests/ServiceStack.Redis.Tests/RedisSentinelTests.cs

@@ -97,5 +97,24 @@ public void Can_specify_Timeout_on_RedisManager()
                 Assert.That(((RedisNativeClient)client).IdleTimeOutSecs, Is.EqualTo(20));
             }
         }
+
+        [Test]
+        public void Can_specify_db_on_RedisSentinel()
+        {
+            var host = new[] {"{0}:{1}".Fmt(TestConfig.SentinelHost, TestConfig.RedisSentinelPort)};
+            var sentinel = new RedisSentinel(host, TestConfig.MasterName) {
+                RedisManagerFactory =
+                {
+                    FactoryFn = (writeHosts, readHosts) =>
+                        new PooledRedisClientManager(writeHosts, readHosts, initalDb:1)
+                }
+            };
+
+            using (var clientsManager = sentinel.Setup())
+            using (var client = clientsManager.GetClient())
+            {
+                Assert.That(client.Db, Is.EqualTo(1));
+            }
+        }
 	}
 }