Add support for bool responses in BytesReadCommand queued transactions

Author: mythz

src/ServiceStack.Redis/Pipeline/QueuedRedisOperation.cs

@@ -128,6 +128,10 @@ public void ProcessResult()
                     {
                         OnSuccessIntCallback(result != null ? int.Parse(Encoding.UTF8.GetString(result)) : 0);
                     }
+                    if (OnSuccessBoolCallback != null)
+                    {
+                        OnSuccessBoolCallback(result != null && Encoding.UTF8.GetString(result) == "OK");
+                    }
                 }
                 else if (StringReadCommand != null)
                 {

tests/ServiceStack.Redis.Tests/RedisTransactionTests.cs

@@ -403,5 +403,22 @@ public void Can_call_LUA_Script_in_transaction()
             Assert.That(result.Children[0].Text, Is.EqualTo("myval"));
             Assert.That(result.Children[1].Text, Is.EqualTo("myotherval"));
         }
+
+        [Test]
+        public void Can_call_SetValueIfNotExists_in_transaction()
+        {
+            bool f = false;
+            bool s = false;
+
+            using (var trans = Redis.CreateTransaction())
+            {
+                trans.QueueCommand(c => c.SetValueIfNotExists("foo", "blah"), r => f = r);
+                trans.QueueCommand(c => c.SetValueIfNotExists("bar", "blah"), r => s = r);
+                trans.Commit();
+            }
+
+            Assert.That(f);
+            Assert.That(s);
+        }
     }
 }