Fix ConvertObjectTypesIntoStringDictionary when value starts with obj literal

Author: mythz

src/ServiceStack.Text/Common/DeserializeType.cs

@@ -74,7 +74,9 @@ public static object ObjectStringToType(ReadOnlySpan<char> strType)
 
             if (config.ConvertObjectTypesIntoStringDictionary && !strType.IsNullOrEmpty())
             {
-                if (strType[0] == JsWriter.MapStartChar)
+                var firstChar = strType[0];
+                var endChar = strType[strType.Length - 1];
+                if (firstChar == JsWriter.MapStartChar && endChar == JsWriter.MapEndChar)
                 {
                     var dynamicMatch = DeserializeDictionary<TSerializer>.ParseDictionary<string, object>(strType, null, v => Serializer.UnescapeString(v).ToString(), v => Serializer.UnescapeString(v).ToString());
                     if (dynamicMatch != null && dynamicMatch.Count > 0)
@@ -83,7 +85,7 @@ public static object ObjectStringToType(ReadOnlySpan<char> strType)
                     }
                 }
 
-                if (strType[0] == JsWriter.ListStartChar)
+                if (firstChar == JsWriter.ListStartChar && endChar == JsWriter.ListEndChar)
                 {
                     return DeserializeList<List<object>, TSerializer>.ParseStringSpan(strType);
                 }

tests/ServiceStack.Text.Tests/JsonTests/AnonymousDeserializationTests.cs

@@ -77,5 +77,18 @@ public void Deserialize_dynamic_json_with_inner_obj_and_array()
             var phone2 = dyn.obj.phones[1].number;
             Assert.AreEqual(phone2, "39967");
         }
+
+        [Test]
+        public void Deserialize_dynamic_json_with_keys_starting_with_object_literal()
+        {
+            using (JsConfig.With(new Config {ConvertObjectTypesIntoStringDictionary = true}))
+            {
+                var json = @"{""prop1"": ""value1"", ""prop2"": ""{tag} value2"", ""prop3"": { ""A"" : 1 } }";
+                var obj = json.FromJson<Dictionary<string, object>>();
+                Assert.That(obj["prop1"], Is.EqualTo("value1"));
+                Assert.That(obj["prop2"], Is.EqualTo("{tag} value2"));
+                Assert.That(obj["prop3"], Is.EqualTo(new Dictionary<string,object> { ["A"] = "1" }));
+            }
+        }
     }
 }