Merge branch 'master' of https://github.com/Bumler/RestSharp into Bumler-master

Author: alexeyzimarev

RestSharp.Tests/JsonTests.cs

@@ -881,6 +881,17 @@ public void Serialize_Json_Returns_Same_Json()
             Assert.AreEqual(preformattedString, result);
         }
 
+        [Test]
+        public void Serialize_Json_Returns_Same_Json_Array()
+        {
+            string preformattedString = "[{ \"name\" : \"value\" }]";
+
+            var json = new JsonSerializer();
+            string result = json.Serialize( preformattedString );
+
+            Assert.AreEqual( preformattedString, result );
+        }
+
         [Test]
         public void Serialize_Json_Does_Not_Double_Escape()
         {

RestSharp/Serialization/Json/JsonSerializer.cs

@@ -15,21 +15,39 @@ public class JsonSerializer : IRestSerializer, IWithRootElement
     {
         /// <summary>
         /// Serialize the object as JSON
+        /// If the object is already a serialized string returns it's value
         /// </summary>
         /// <param name="obj">Object to serialize</param>
         /// <returns>JSON as String</returns>
         public string Serialize(object obj)
         {
-            if (obj is string value)
+            if( IsSerializedString( obj, out var serializedString ) )
             {
-                var trimmed = value.Trim();
-                if (trimmed.StartsWith("{") && trimmed.EndsWith("}"))
+                return serializedString;
+            }
+
+            return SimpleJson.SimpleJson.SerializeObject(obj);
+        }
+
+        /// <summary>
+        /// Determines if the object is already a serialized string.
+        /// </summary>
+        private static bool IsSerializedString( object obj, out string serializedString )
+        {
+            if( obj is string value )
+            {
+                string trimmed = value.Trim();
+
+                if( ( trimmed.StartsWith( "{" ) && trimmed.EndsWith( "}" ) )
+                    || ( trimmed.StartsWith( "[{" ) && trimmed.EndsWith( "}]" ) ) )
                 {
-                    return value;
+                    serializedString = value;
+                    return true;
                 }
             }
 
-            return SimpleJson.SimpleJson.SerializeObject(obj);
+            serializedString = null;
+            return false;
         }
 
         /// <summary>