added some more interop tests

src/csharp/Grpc.sln

@@ -45,6 +45,6 @@ Global
 		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(MonoDevelopProperties) = preSolution
-		StartupItem = GrpcApi\GrpcApi.csproj
+		StartupItem = InteropClient\InteropClient.csproj
 	EndGlobalSection
 EndGlobal

src/csharp/GrpcCore/GrpcCore.csproj

@@ -62,6 +62,7 @@
     <Compile Include="ServerServiceDefinition.cs" />
     <Compile Include="Utils\RecordingObserver.cs" />
     <Compile Include="Utils\PortPicker.cs" />
+    <Compile Include="Utils\RecordingQueue.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

src/csharp/GrpcCore/Utils/RecordingQueue.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+
+namespace Google.GRPC.Core.Utils
+{
+    public class RecordingQueue<T> : IObserver<T>
+    {
+        readonly BlockingCollection<T> queue = new BlockingCollection<T>();
+        TaskCompletionSource<object> tcs = new TaskCompletionSource<object>();
+
+        public void OnCompleted()
+        {
+            tcs.SetResult(null);
+        }
+
+        public void OnError(Exception error)
+        {
+            tcs.SetException(error);
+        }
+
+        public void OnNext(T value)
+        {
+            queue.Add(value);
+        }
+
+        public BlockingCollection<T> Queue
+        {
+            get
+            {
+                return queue;
+            }
+        }
+
+        public Task Finished
+        {
+            get
+            {
+                return tcs.Task;
+            }
+        }
+    }
+}
+

src/csharp/InteropClient/InteropClient.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Collections.Generic;
 using NUnit.Framework;
 using System.Text.RegularExpressions;
 using Google.GRPC.Core;
+using Google.GRPC.Core.Utils;
 using Google.ProtocolBuffers;
 using grpc.testing;
 
@@ -78,6 +80,18 @@ namespace InteropClient
                 case "large_unary":
                     RunLargeUnary(client);
                     break;
+                case "client_streaming":
+                    RunClientStreaming(client);
+                    break;
+                case "server_streaming":
+                    RunServerStreaming(client);
+                    break;
+                case "ping_pong":
+                    RunPingPong(client);
+                    break;
+                case "empty_stream":
+                    RunEmptyStream(client);
+                    break;
                 default:
                     throw new ArgumentException("Unknown test case " + testCase);
             }
@@ -88,6 +102,7 @@ namespace InteropClient
             Console.WriteLine("running empty_unary");
             var response = client.EmptyCall(Empty.DefaultInstance);
             Assert.IsNotNull(response);
+            Console.WriteLine("Passed!");
         }
 
         private void RunLargeUnary(TestServiceGrpc.ITestServiceClient client)
@@ -96,14 +111,129 @@ namespace InteropClient
             var request = SimpleRequest.CreateBuilder()
                     .SetResponseType(PayloadType.COMPRESSABLE)
                     .SetResponseSize(314159)
-                    .SetPayload(Payload.CreateBuilder().SetBody(ByteString.CopyFrom(new byte[271828])))
+                    .SetPayload(CreateZerosPayload(271828))
                     .Build();
              
             var response = client.UnaryCall(request);
 
             Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
             Assert.AreEqual(314159, response.Payload.Body.Length);
-            // TODO: assert that the response is all zeros...
+            Console.WriteLine("Passed!");
+        }
+
+        private void RunClientStreaming(TestServiceGrpc.ITestServiceClient client)
+        {
+            Console.WriteLine("running client_streaming");
+
+            var bodySizes = new List<int>{27182, 8, 1828, 45904};
+
+            var context = client.StreamingInputCall();
+            foreach (var size in bodySizes)
+            {
+                context.Inputs.OnNext(
+                    StreamingInputCallRequest.CreateBuilder().SetPayload(CreateZerosPayload(size)).Build());
+            }
+            context.Inputs.OnCompleted();
+
+            var response = context.Task.Result;
+            Assert.AreEqual(74922, response.AggregatedPayloadSize);
+            Console.WriteLine("Passed!");
+        }
+
+        private void RunServerStreaming(TestServiceGrpc.ITestServiceClient client)
+        {
+            Console.WriteLine("running server_streaming");
+
+            var bodySizes = new List<int>{31415, 9, 2653, 58979};
+
+            var request = StreamingOutputCallRequest.CreateBuilder()
+                .SetResponseType(PayloadType.COMPRESSABLE)
+                .AddRangeResponseParameters(bodySizes.ConvertAll(
+                        (size) => ResponseParameters.CreateBuilder().SetSize(size).Build()))
+                .Build();
+
+            var recorder = new RecordingObserver<StreamingOutputCallResponse>();
+            client.StreamingOutputCall(request, recorder);
+
+            var responseList = recorder.ToList().Result;
+
+            foreach (var res in responseList)
+            {
+                Assert.AreEqual(PayloadType.COMPRESSABLE, res.Payload.Type);
+            }
+            CollectionAssert.AreEqual(bodySizes, responseList.ConvertAll((item) => item.Payload.Body.Length));
+            Console.WriteLine("Passed!");
+        }
+
+        private void RunPingPong(TestServiceGrpc.ITestServiceClient client)
+        {
+            Console.WriteLine("running ping_pong");
+
+            var recorder = new RecordingQueue<StreamingOutputCallResponse>();
+            var inputs = client.FullDuplexCall(recorder);
+
+            StreamingOutputCallResponse response;
+
+            inputs.OnNext(StreamingOutputCallRequest.CreateBuilder()
+                .SetResponseType(PayloadType.COMPRESSABLE)
+                .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(31415))
+                .SetPayload(CreateZerosPayload(27182)).Build());
+           
+            response = recorder.Queue.Take();             
+            Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
+            Assert.AreEqual(31415, response.Payload.Body.Length);
+
+            inputs.OnNext(StreamingOutputCallRequest.CreateBuilder()
+                          .SetResponseType(PayloadType.COMPRESSABLE)
+                          .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(9))
+                          .SetPayload(CreateZerosPayload(8)).Build());
+
+            response = recorder.Queue.Take();             
+            Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
+            Assert.AreEqual(9, response.Payload.Body.Length);
+
+            inputs.OnNext(StreamingOutputCallRequest.CreateBuilder()
+                          .SetResponseType(PayloadType.COMPRESSABLE)
+                          .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(2635))
+                          .SetPayload(CreateZerosPayload(1828)).Build());
+
+            response = recorder.Queue.Take();             
+            Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
+            Assert.AreEqual(2653, response.Payload.Body.Length);
+
+
+            inputs.OnNext(StreamingOutputCallRequest.CreateBuilder()
+                          .SetResponseType(PayloadType.COMPRESSABLE)
+                          .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(58979))
+                          .SetPayload(CreateZerosPayload(45904)).Build());
+
+            response = recorder.Queue.Take();             
+            Assert.AreEqual(PayloadType.COMPRESSABLE, response.Payload.Type);
+            Assert.AreEqual(58979, response.Payload.Body.Length);
+
+            recorder.Finished.Wait();
+            Assert.AreEqual(0, recorder.Queue.Count);
+
+            Console.WriteLine("Passed!");
+        }
+
+        private void RunEmptyStream(TestServiceGrpc.ITestServiceClient client)
+        {
+            Console.WriteLine("running empty_stream");
+
+            var recorder = new RecordingObserver<StreamingOutputCallResponse>();
+            var inputs = client.FullDuplexCall(recorder);
+            inputs.OnCompleted();
+
+            var responseList = recorder.ToList().Result;
+            Assert.AreEqual(0, responseList.Count);
+
+            Console.WriteLine("Passed!");
+        }
+
+
+        private Payload CreateZerosPayload(int size) {
+            return Payload.CreateBuilder().SetBody(ByteString.CopyFrom(new byte[size])).Build();
         }
 
         private static ClientOptions ParseArguments(string[] args)