-Merge demo

Src/Newtonsoft.Json.Tests/DemoTests.cs

@@ -29,6 +29,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
 using Newtonsoft.Json.Schema;
 using Newtonsoft.Json.Serialization;
 #if !NETFX_CORE
@@ -515,5 +516,39 @@ namespace Newtonsoft.Json.Tests
             //   "address": "221B Baker Street"
             // }
         }
+
+        [Test]
+        public void MergeJson()
+        {
+            JObject o1 = JObject.Parse(@"{
+              'FirstName': 'John',
+              'LastName': 'Smith',
+              'Enabled': false,
+              'Roles': [ 'User' ]
+            }");
+            JObject o2 = JObject.Parse(@"{
+              'Enabled': true,
+              'Roles': [ 'User', 'Admin' ]
+            }");
+
+            o1.Merge(o2, new JsonMergeSettings
+            {
+                // union arrays together to avoid duplicates
+                MergeArrayHandling = MergeArrayHandling.Union
+            });
+
+            string json = o1.ToString();
+            // {
+            //   "FirstName": "John",
+            //   "LastName": "Smith",
+            //   "Enabled": true,
+            //   "Roles": [
+            //     "User",
+            //     "Admin"
+            //   ]
+            // }
+
+            Console.WriteLine(json);
+        }
     }
 }

Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj

@@ -492,6 +492,7 @@
   </ItemGroup>
   <ItemGroup>
     <Service Include="{3259AA49-8AA1-44D3-9025-A0B520596A8C}" />
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Newtonsoft.Json\Newtonsoft.Json.csproj">

Src/Newtonsoft.Json.Tests/Serialization/DependencyInjectionTests.cs

@@ -118,6 +118,7 @@ namespace Newtonsoft.Json.Tests.Serialization
         {
             JsonObjectContract contract = base.CreateObjectContract(objectType);
 
+            // use Autofac to create types that have been registered with it
             if (_container.IsRegistered(objectType))
                 contract.DefaultCreator = () => _container.Resolve(objectType);
 

Src/Newtonsoft.Json/Linq/JContainer.cs

@@ -111,9 +111,11 @@ namespace Newtonsoft.Json.Linq
         {
             ValidationUtils.ArgumentNotNull(other, "c");
 
+            int i = 0;
             foreach (JToken child in other)
             {
-                Add(child);
+                AddInternal(i, child, false);
+                i++;
             }
         }