diff --git a/src/csharp/Grpc.IntegrationTesting/HeaderInterceptorTest.cs b/src/csharp/Grpc.IntegrationTesting/HeaderInterceptorTest.cs
deleted file mode 100644
index 1d758b75402087b73f91ec5eae4f1573f7168d1e..0000000000000000000000000000000000000000
--- a/src/csharp/Grpc.IntegrationTesting/HeaderInterceptorTest.cs
+++ /dev/null
@@ -1,113 +0,0 @@
-#region Copyright notice and license
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#endregion
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Grpc.Core;
-using Grpc.Core.Utils;
-using Grpc.Testing;
-using NUnit.Framework;
-
-namespace Grpc.IntegrationTesting
-{
-    public class HeaderInterceptorTest
-    {
-        const string Host = "localhost";
-        Server server;
-        Channel channel;
-        TestService.TestServiceClient client;
-
-        [TestFixtureSetUp]
-        public void Init()
-        {
-            server = new Server
-            {
-                Services = { TestService.BindService(new TestServiceImpl()) },
-                Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
-            };
-            server.Start();
-
-            channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure);
-            client = TestService.NewClient(channel);
-        }
-
-        [TestFixtureTearDown]
-        public void Cleanup()
-        {
-            channel.ShutdownAsync().Wait();
-            server.ShutdownAsync().Wait();
-        }
-
-        [Test]
-        public async Task HeaderInterceptor_CreateMetadata()
-        {
-            var key = "x-grpc-test-echo-initial";
-            client.HeaderInterceptor = new HeaderInterceptor((method, metadata) =>
-            {
-                metadata.Add(key, "ABC");
-            });
-
-            var call = client.UnaryCallAsync(new SimpleRequest());
-            await call;
-
-           var responseHeaders = await call.ResponseHeadersAsync;
-           Assert.AreEqual("ABC", responseHeaders.First((entry) => entry.Key == key).Value);
-        }
-
-        [Test]
-        public async Task HeaderInterceptor_AppendMetadata()
-        {
-            var initialKey = "x-grpc-test-echo-initial";
-            var trailingKey = "x-grpc-test-echo-trailing-bin";
-
-            client.HeaderInterceptor = new HeaderInterceptor((method, metadata) =>
-            {
-                metadata.Add(initialKey, "ABC");
-            });
-
-            var headers = new Metadata
-            {
-                { trailingKey, new byte[] {0xaa} }
-            };
-            var call = client.UnaryCallAsync(new SimpleRequest(), headers: headers);
-            await call;
-
-            var responseHeaders = await call.ResponseHeadersAsync;
-            Assert.AreEqual("ABC", responseHeaders.First((entry) => entry.Key == initialKey).Value);
-            CollectionAssert.AreEqual(new byte[] {0xaa}, call.GetTrailers().First((entry) => entry.Key == trailingKey).ValueBytes);
-        }
-    }
-}
diff --git a/src/csharp/Grpc.IntegrationTesting/TestServiceGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestServiceGrpc.cs
deleted file mode 100644
index 9f14dad6c0c4e7170282743587bb27e723e5c9f1..0000000000000000000000000000000000000000
--- a/src/csharp/Grpc.IntegrationTesting/TestServiceGrpc.cs
+++ /dev/null
@@ -1,204 +0,0 @@
-#region Copyright notice and license
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#endregion
-
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
-using Grpc.Core;
-
-namespace grpc.testing
-{
-    /// <summary>
-    /// TestService (this is handwritten version of code that will normally be generated).
-    /// </summary>
-    public class TestServiceGrpc
-    {
-        static readonly string ServiceName = "/grpc.testing.TestService";
-
-        static readonly Marshaller<Empty> EmptyMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), Empty.ParseFrom);
-        static readonly Marshaller<SimpleRequest> SimpleRequestMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), SimpleRequest.ParseFrom);
-        static readonly Marshaller<SimpleResponse> SimpleResponseMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), SimpleResponse.ParseFrom);
-        static readonly Marshaller<StreamingOutputCallRequest> StreamingOutputCallRequestMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), StreamingOutputCallRequest.ParseFrom);
-        static readonly Marshaller<StreamingOutputCallResponse> StreamingOutputCallResponseMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), StreamingOutputCallResponse.ParseFrom);
-        static readonly Marshaller<StreamingInputCallRequest> StreamingInputCallRequestMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), StreamingInputCallRequest.ParseFrom);
-        static readonly Marshaller<StreamingInputCallResponse> StreamingInputCallResponseMarshaller = Marshallers.Create((arg) => arg.ToByteArray(), StreamingInputCallResponse.ParseFrom);
-
-        static readonly Method<Empty, Empty> EmptyCallMethod = new Method<Empty, Empty>(
-            MethodType.Unary,
-            "EmptyCall",
-            EmptyMarshaller,
-            EmptyMarshaller);
-
-        static readonly Method<SimpleRequest, SimpleResponse> UnaryCallMethod = new Method<SimpleRequest, SimpleResponse>(
-            MethodType.Unary,
-            "UnaryCall",
-            SimpleRequestMarshaller,
-            SimpleResponseMarshaller);
-
-        static readonly Method<StreamingOutputCallRequest, StreamingOutputCallResponse> StreamingOutputCallMethod = new Method<StreamingOutputCallRequest, StreamingOutputCallResponse>(
-            MethodType.ServerStreaming,
-            "StreamingOutputCall",
-            StreamingOutputCallRequestMarshaller,
-            StreamingOutputCallResponseMarshaller);
-
-        static readonly Method<StreamingInputCallRequest, StreamingInputCallResponse> StreamingInputCallMethod = new Method<StreamingInputCallRequest, StreamingInputCallResponse>(
-            MethodType.ClientStreaming,
-            "StreamingInputCall",
-            StreamingInputCallRequestMarshaller,
-            StreamingInputCallResponseMarshaller);
-
-        static readonly Method<StreamingOutputCallRequest, StreamingOutputCallResponse> FullDuplexCallMethod = new Method<StreamingOutputCallRequest, StreamingOutputCallResponse>(
-            MethodType.DuplexStreaming,
-            "FullDuplexCall",
-            StreamingOutputCallRequestMarshaller,
-            StreamingOutputCallResponseMarshaller);
-
-        static readonly Method<StreamingOutputCallRequest, StreamingOutputCallResponse> HalfDuplexCallMethod = new Method<StreamingOutputCallRequest, StreamingOutputCallResponse>(
-            MethodType.DuplexStreaming,
-            "HalfDuplexCall",
-            StreamingOutputCallRequestMarshaller,
-            StreamingOutputCallResponseMarshaller);
-
-        public interface ITestServiceClient
-        {
-            Empty EmptyCall(Empty request, CancellationToken token = default(CancellationToken));
-
-            Task<Empty> EmptyCallAsync(Empty request, CancellationToken token = default(CancellationToken));
-
-            SimpleResponse UnaryCall(SimpleRequest request, CancellationToken token = default(CancellationToken));
-
-            Task<SimpleResponse> UnaryCallAsync(SimpleRequest request, CancellationToken token = default(CancellationToken));
-
-            AsyncServerStreamingCall<StreamingOutputCallResponse> StreamingOutputCall(StreamingOutputCallRequest request, CancellationToken token = default(CancellationToken));
-
-            AsyncClientStreamingCall<StreamingInputCallRequest, StreamingInputCallResponse> StreamingInputCall(CancellationToken token = default(CancellationToken));
-
-            AsyncDuplexStreamingCall<StreamingOutputCallRequest, StreamingOutputCallResponse> FullDuplexCall(CancellationToken token = default(CancellationToken));
-
-            AsyncDuplexStreamingCall<StreamingOutputCallRequest, StreamingOutputCallResponse> HalfDuplexCall(CancellationToken token = default(CancellationToken));
-        }
-
-        public class TestServiceClientStub : AbstractStub<TestServiceClientStub, StubConfiguration>, ITestServiceClient
-        {
-            public TestServiceClientStub(Channel channel) : base(channel, StubConfiguration.Default)
-            {
-            }
-
-            public TestServiceClientStub(Channel channel, StubConfiguration config) : base(channel, config)
-            {
-            }
-
-            public Empty EmptyCall(Empty request, CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, EmptyCallMethod);
-                return Calls.BlockingUnaryCall(call, request, token);
-            }
-
-            public Task<Empty> EmptyCallAsync(Empty request, CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, EmptyCallMethod);
-                return Calls.AsyncUnaryCall(call, request, token);
-            }
-
-            public SimpleResponse UnaryCall(SimpleRequest request, CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, UnaryCallMethod);
-                return Calls.BlockingUnaryCall(call, request, token);
-            }
-
-            public Task<SimpleResponse> UnaryCallAsync(SimpleRequest request, CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, UnaryCallMethod);
-                return Calls.AsyncUnaryCall(call, request, token);
-            }
-
-            public AsyncServerStreamingCall<StreamingOutputCallResponse> StreamingOutputCall(StreamingOutputCallRequest request, CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, StreamingOutputCallMethod);
-                return Calls.AsyncServerStreamingCall(call, request, token);
-            }
-
-            public AsyncClientStreamingCall<StreamingInputCallRequest, StreamingInputCallResponse> StreamingInputCall(CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, StreamingInputCallMethod);
-                return Calls.AsyncClientStreamingCall(call, token);
-            }
-
-            public AsyncDuplexStreamingCall<StreamingOutputCallRequest, StreamingOutputCallResponse> FullDuplexCall(CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, FullDuplexCallMethod);
-                return Calls.AsyncDuplexStreamingCall(call, token);
-            }
-
-            public AsyncDuplexStreamingCall<StreamingOutputCallRequest, StreamingOutputCallResponse> HalfDuplexCall(CancellationToken token = default(CancellationToken))
-            {
-                var call = CreateCall(ServiceName, HalfDuplexCallMethod);
-                return Calls.AsyncDuplexStreamingCall(call, token);
-            }
-        }
-
-        // server-side interface
-        public interface ITestService
-        {
-            Task<Empty> EmptyCall(ServerCallContext context, Empty request);
-
-            Task<SimpleResponse> UnaryCall(ServerCallContext context, SimpleRequest request);
-
-            Task StreamingOutputCall(ServerCallContext context, StreamingOutputCallRequest request, IServerStreamWriter<StreamingOutputCallResponse> responseStream);
-
-            Task<StreamingInputCallResponse> StreamingInputCall(ServerCallContext context, IAsyncStreamReader<StreamingInputCallRequest> requestStream);
-
-            Task FullDuplexCall(ServerCallContext context, IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream);
-
-            Task HalfDuplexCall(ServerCallContext context, IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream);
-        }
-
-        public static ServerServiceDefinition BindService(ITestService serviceImpl)
-        {
-            return ServerServiceDefinition.CreateBuilder(ServiceName)
-                .AddMethod(EmptyCallMethod, serviceImpl.EmptyCall)
-                .AddMethod(UnaryCallMethod, serviceImpl.UnaryCall)
-                .AddMethod(StreamingOutputCallMethod, serviceImpl.StreamingOutputCall)
-                .AddMethod(StreamingInputCallMethod, serviceImpl.StreamingInputCall)
-                .AddMethod(FullDuplexCallMethod, serviceImpl.FullDuplexCall)
-                .AddMethod(HalfDuplexCallMethod, serviceImpl.HalfDuplexCall)
-                .Build();
-        }
-
-        public static ITestServiceClient NewStub(Channel channel)
-        {
-            return new TestServiceClientStub(channel);
-        }
-    }
-}