Fix tests

Author: mythz

src/ServiceStack.Text/Common/WriteDictionary.cs

@@ -205,6 +205,10 @@ public static void WriteGenericIDictionary(
                 writer.Write(JsonUtils.Null);
                 return;
             }
+
+            if (map is JsonObject jsonObject)
+                map = (IDictionary<TKey,TValue>) jsonObject.ToUnescapedDictionary();
+            
             writer.Write(JsWriter.MapStartChar);
 
             var encodeMapKey = Serializer.GetTypeInfo(typeof(TKey)).EncodeMapKey;

src/ServiceStack.Text/JsonObject.cs

@@ -102,6 +102,17 @@ public class JsonObject : Dictionary<string, string>, IEnumerable<KeyValuePair<s
         IEnumerator<KeyValuePair<string, string>> IEnumerable<KeyValuePair<string, string>>.GetEnumerator()
             => GetEnumerator();
 
+        public Dictionary<string, string> ToUnescapedDictionary()
+        {
+            var to = new Dictionary<string, string>();
+            var enumerateAsConcreteDict = (Dictionary<string, string>)this;
+            foreach (var entry in enumerateAsConcreteDict)
+            {
+                to[entry.Key] = entry.Value;
+            }
+            return to;
+        }
+
         public static JsonObject Parse(string json)
         {
             return JsonSerializer.DeserializeFromString<JsonObject>(json);

src/ServiceStack.Text/Pcl.Dynamic.cs

@@ -102,7 +102,7 @@ public static dynamic Deserialize(string json)
         {
             // Support arbitrary nesting by using JsonObject
             var deserialized = JsonSerializer.DeserializeFromString<JsonObject>(json);
-            var hash = deserialized.ToDictionary<KeyValuePair<string, string>, string, object>(entry => entry.Key, entry => entry.Value);
+            var hash = deserialized.ToUnescapedDictionary().ToObjectDictionary();
             return new DynamicJson(hash);
         }