diff --git a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/E2ETestBase.cs b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/E2ETestBase.cs
index 2f212378..e2855c5f 100644
--- a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/E2ETestBase.cs
+++ b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/E2ETestBase.cs
@@ -155,6 +155,21 @@ protected void TestPostStatusCodeIs(string uriStringAfterServiceRoot, int status
                 Assert.Equal(statusCode, response.StatusCode);
             }
         }
+
+        protected async void TestPatchStatusCodeIs(string uriStringAfterServiceRoot, string patchContent, HttpStatusCode statusCode)
+        {
+            var requestUri = string.Format("{0}/{1}", this.ServiceBaseUri, uriStringAfterServiceRoot);
+            var request = new HttpRequestMessage(new HttpMethod("PATCH"), requestUri);
+
+            request.Content = new StringContent(patchContent);
+            request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
+
+            HttpClient client = new HttpClient();
+            HttpResponseMessage response = await client.SendAsync(request);
+
+            Assert.Equal(statusCode, response.StatusCode);
+        }
+
         #endregion
 
         protected void ResetDataSource()
diff --git a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/Microsoft.OData.Service.Sample.Tests.csproj b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/Microsoft.OData.Service.Sample.Tests.csproj
index 1938e67e..d845fe7a 100644
--- a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/Microsoft.OData.Service.Sample.Tests.csproj
+++ b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/Microsoft.OData.Service.Sample.Tests.csproj
@@ -80,6 +80,7 @@
       <HintPath>..\..\..\packages\FluentAssertions.4.13.0\lib\net45\FluentAssertions.Core.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Microsoft.CSharp" />
     <Reference Include="Microsoft.OData.Client, Version=6.15.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Microsoft.OData.Client.6.15.0\lib\net40\Microsoft.OData.Client.dll</HintPath>
       <Private>True</Private>
@@ -96,6 +97,10 @@
       <HintPath>..\..\..\packages\Microsoft.Spatial.6.15.0\lib\portable-net45+win+wpa81\Microsoft.Spatial.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Newtonsoft.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.ServiceModel.Web" />
diff --git a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/TrippinInMemoryE2ETest.cs b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/TrippinInMemoryE2ETest.cs
index bcc6d1e0..fbf5449f 100644
--- a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/TrippinInMemoryE2ETest.cs
+++ b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/TrippinInMemoryE2ETest.cs
@@ -1,6 +1,10 @@
 // Copyright (c) Microsoft Corporation.  All rights reserved.
 // Licensed under the MIT License.  See License.txt in the project root for license information.
 
+using System;
+using System.Net;
+using System.Text.RegularExpressions;
+using Newtonsoft.Json;
 using Xunit;
 
 namespace Microsoft.OData.Service.Sample.Tests
@@ -158,5 +162,46 @@ public void TestRawValuedEnumPropertyAccess()
         {
             TestGetPayloadIs("People('russellwhyte')/FavoriteFeature/$value", "Feature1");
         }
+
+        [Fact]
+        public void TestPatchSuccessfully()
+        {
+            // Get origin content and sessionId.
+            var uriStringAfterServiceRoot = "Airports('KLAX')";
+            var originContent = default(string);
+            Action<string> getContent = p => originContent = p;
+            TestGetPayload(uriStringAfterServiceRoot, getContent);
+            var sessionId = GetSessionIdFromResponse(originContent);
+            Assert.NotNull(sessionId);
+
+            // Patch it.
+            uriStringAfterServiceRoot = string.Format(@"(S({0}))/{1}", sessionId, uriStringAfterServiceRoot);
+            var changedRegion = "TestRegion";
+            var changedAddress = "1 World Way, Los Angeles, CA, 90045";
+            string patchContent =
+                string.Format(
+                    "{{\r\n    \"Location\":{{\r\n        \"Address\":\"{0}\",\r\n        \"City\":{{\r\n            \"Region\":\"{1}\"\r\n        }}\r\n    }}\r\n}}",
+                    changedAddress,
+                    changedRegion);
+            TestPatchStatusCodeIs(uriStringAfterServiceRoot, patchContent, HttpStatusCode.NoContent);
+
+            // Test patch results.
+            dynamic content = JsonConvert.DeserializeObject(originContent);
+            content.Location.Address = changedAddress;
+            content.Location.City.Region = changedRegion;
+            string changedContent = JsonConvert.SerializeObject(content);
+            TestGetPayloadContains(uriStringAfterServiceRoot, changedContent);
+        }
+
+        private static string GetSessionIdFromResponse(string response)
+        {
+            var match = Regex.Match(response, @"/\(S\((\w+)\)\)");
+            if (match.Success)
+            {
+                return match.Groups[1].Value;
+            }
+
+            return default(string);
+        }
     }
 }
\ No newline at end of file
diff --git a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/packages.config b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/packages.config
index 740423ac..ad199180 100644
--- a/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/packages.config
+++ b/test/ODataEndToEnd/Microsoft.OData.Service.Sample.Tests/packages.config
@@ -5,6 +5,7 @@
   <package id="Microsoft.OData.Core" version="6.15.0" targetFramework="net45" />
   <package id="Microsoft.OData.Edm" version="6.15.0" targetFramework="net45" />
   <package id="Microsoft.Spatial" version="6.15.0" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
   <package id="xunit" version="2.1.0" targetFramework="net45" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="net45" />
   <package id="xunit.assert" version="2.1.0" targetFramework="net45" />
diff --git a/test/ODataEndToEnd/Microsoft.Restier.Providers.InMemory/Submit/ChangeSetInitializer.cs b/test/ODataEndToEnd/Microsoft.Restier.Providers.InMemory/Submit/ChangeSetInitializer.cs
index de00f286..ec7bc2a9 100644
--- a/test/ODataEndToEnd/Microsoft.Restier.Providers.InMemory/Submit/ChangeSetInitializer.cs
+++ b/test/ODataEndToEnd/Microsoft.Restier.Providers.InMemory/Submit/ChangeSetInitializer.cs
@@ -202,7 +202,7 @@ private static void SetValues(object instance, Type type, IReadOnlyDictionary<st
 
                     if (dic != null)
                     {
-                        value = Activator.CreateInstance(propertyInfo.PropertyType);
+                        value = propertyInfo.GetValue(instance);
                         SetValues(value, propertyInfo.PropertyType, dic);
                     }
                     else if (propertyInfo.PropertyType.IsGenericType)