Enable streaming test case for gRPC client in GCE.

	Change on 2015/01/08 by chenw <chenw@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83549959

test/cpp/interop/client.cc

@@ -128,6 +128,152 @@ void DoLargeUnary(std::shared_ptr<ChannelInterface> channel) {
   gpr_log(GPR_INFO, "Large unary done.");
 }
 
+void DoRequestStreaming(std::shared_ptr<ChannelInterface> channel) {
+  gpr_log(GPR_INFO, "Sending request steaming rpc ...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel));
+
+  grpc::ClientContext context;
+  StreamingInputCallRequest request;
+  StreamingInputCallResponse response;
+
+  std::unique_ptr<grpc::ClientWriter<StreamingInputCallRequest>> stream(
+      stub->StreamingInputCall(&context, &response));
+
+  int aggregated_payload_size = 0;
+  for (unsigned int i = 0; i < request_stream_sizes.size(); ++i) {
+    grpc::testing::Payload* payload = request.mutable_payload();
+    payload->set_body(grpc::string(request_stream_sizes[i], '\0'));
+    GPR_ASSERT(stream->Write(request));
+    aggregated_payload_size += request_stream_sizes[i];
+  }
+  stream->WritesDone();
+  grpc::Status s = stream->Wait();
+
+  GPR_ASSERT(response.aggregated_payload_size() == aggregated_payload_size);
+  GPR_ASSERT(s.IsOk());
+  gpr_log(GPR_INFO, "Request streaming done.");
+}
+
+void DoResponseStreaming(std::shared_ptr<ChannelInterface> channel) {
+  gpr_log(GPR_INFO, "Receiving response steaming rpc ...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel));
+
+  grpc::ClientContext context;
+  StreamingOutputCallRequest request;
+  for (unsigned int i = 0; i < response_stream_sizes.size(); ++i) {
+    ResponseParameters* response_parameter = request.add_response_parameters();
+    response_parameter->set_size(response_stream_sizes[i]);
+  }
+  StreamingOutputCallResponse response;
+  std::unique_ptr<grpc::ClientReader<StreamingOutputCallResponse>> stream(
+      stub->StreamingOutputCall(&context, &request));
+
+  unsigned int i = 0;
+  while (stream->Read(&response)) {
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(response_stream_sizes[i], '\0'));
+    ++i;
+  }
+  GPR_ASSERT(response_stream_sizes.size() == i);
+  grpc::Status s = stream->Wait();
+
+  GPR_ASSERT(s.IsOk());
+  gpr_log(GPR_INFO, "Response streaming done.");
+}
+
+void DoResponseStreamingWithSlowConsumer(
+    std::shared_ptr<ChannelInterface> channel) {
+  gpr_log(GPR_INFO, "Receiving response steaming rpc with slow consumer ...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel));
+
+  grpc::ClientContext context;
+  StreamingOutputCallRequest request;
+
+  for (unsigned int i = 0; i < kNumResponseMessages; ++i) {
+    ResponseParameters* response_parameter = request.add_response_parameters();
+    response_parameter->set_size(kResponseMessageSize);
+  }
+  StreamingOutputCallResponse response;
+  std::unique_ptr<grpc::ClientReader<StreamingOutputCallResponse>> stream(
+      stub->StreamingOutputCall(&context, &request));
+
+  unsigned int i = 0;
+  while (stream->Read(&response)) {
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(kResponseMessageSize, '\0'));
+    gpr_log(GPR_INFO, "received message %d", i);
+    std::this_thread::sleep_for(
+        std::chrono::milliseconds(kReceiveDelayMilliSeconds));
+    ++i;
+  }
+  GPR_ASSERT(kNumResponseMessages == i);
+  grpc::Status s = stream->Wait();
+
+  GPR_ASSERT(s.IsOk());
+  gpr_log(GPR_INFO, "Response streaming done.");
+}
+
+void DoHalfDuplex(std::shared_ptr<ChannelInterface> channel) {
+  gpr_log(GPR_INFO, "Sending half-duplex streaming rpc ...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel));
+
+  grpc::ClientContext context;
+  std::unique_ptr<grpc::ClientReaderWriter<StreamingOutputCallRequest,
+                                           StreamingOutputCallResponse>>
+      stream(stub->HalfDuplexCall(&context));
+
+  StreamingOutputCallRequest request;
+  ResponseParameters* response_parameter = request.add_response_parameters();
+  for (unsigned int i = 0; i < response_stream_sizes.size(); ++i) {
+    response_parameter->set_size(response_stream_sizes[i]);
+    GPR_ASSERT(stream->Write(request));
+  }
+  stream->WritesDone();
+
+  unsigned int i = 0;
+  StreamingOutputCallResponse response;
+  while (stream->Read(&response)) {
+    GPR_ASSERT(response.payload().has_body());
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(response_stream_sizes[i], '\0'));
+    ++i;
+  }
+  GPR_ASSERT(response_stream_sizes.size() == i);
+  grpc::Status s = stream->Wait();
+  GPR_ASSERT(s.IsOk());
+  gpr_log(GPR_INFO, "Half-duplex streaming rpc done.");
+}
+
+void DoPingPong(std::shared_ptr<ChannelInterface> channel) {
+  gpr_log(GPR_INFO, "Sending Ping Pong streaming rpc ...");
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel));
+
+  grpc::ClientContext context;
+  std::unique_ptr<grpc::ClientReaderWriter<StreamingOutputCallRequest,
+                                           StreamingOutputCallResponse>>
+      stream(stub->FullDuplexCall(&context));
+
+  StreamingOutputCallRequest request;
+  request.set_response_type(grpc::testing::PayloadType::COMPRESSABLE);
+  ResponseParameters* response_parameter = request.add_response_parameters();
+  grpc::testing::Payload* payload = request.mutable_payload();
+  StreamingOutputCallResponse response;
+  for (unsigned int i = 0; i < request_stream_sizes.size(); ++i) {
+    response_parameter->set_size(response_stream_sizes[i]);
+    payload->set_body(grpc::string(request_stream_sizes[i], '\0'));
+    GPR_ASSERT(stream->Write(request));
+    GPR_ASSERT(stream->Read(&response));
+    GPR_ASSERT(response.payload().has_body());
+    GPR_ASSERT(response.payload().body() ==
+               grpc::string(response_stream_sizes[i], '\0'));
+  }
+
+  stream->WritesDone();
+  GPR_ASSERT(!stream->Read(&response));
+  grpc::Status s = stream->Wait();
+  GPR_ASSERT(s.IsOk());
+  gpr_log(GPR_INFO, "Ping pong streaming done.");
+}
 
 int main(int argc, char** argv) {
   grpc_init();
@@ -148,6 +294,23 @@ int main(int argc, char** argv) {
     DoEmpty(channel);
   } else if (FLAGS_test_case == "large_unary") {
     DoLargeUnary(channel);
+  } else if (FLAGS_test_case == "client_streaming") {
+    DoRequestStreaming(channel);
+  } else if (FLAGS_test_case == "server_streaming") {
+    DoResponseStreaming(channel);
+  } else if (FLAGS_test_case == "slow_consumer") {
+    DoResponseStreamingWithSlowConsumer(channel);
+  } else if (FLAGS_test_case == "half_duplex") {
+    DoHalfDuplex(channel);
+  } else if (FLAGS_test_case == "ping_pong") {
+    DoPingPong(channel);
+  } else if (FLAGS_test_case == "all") {
+    DoEmpty(channel);
+    DoLargeUnary(channel);
+    DoRequestStreaming(channel);
+    DoResponseStreaming(channel);
+    DoHalfDuplex(channel);
+    DoPingPong(channel);
   } else {
     gpr_log(
         GPR_ERROR,