test/cpp/end2end/async_end2end_test.cc

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#include <chrono>
#include <thread>

#include "test/core/util/test_config.h"
#include "test/cpp/util/echo_duplicate.pb.h"
#include "test/cpp/util/echo.pb.h"
#include "src/cpp/util/time.h"
#include <grpc++/channel_arguments.h>
#include <grpc++/channel_interface.h>
#include <grpc++/client_context.h>
#include <grpc++/create_channel.h>
#include <grpc++/credentials.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc++/server_context.h>
#include <grpc++/status.h>
#include <grpc++/stream.h>
#include "test/core/util/port.h"
#include <gtest/gtest.h>

#include <grpc/grpc.h>
#include <grpc/support/thd.h>
#include <grpc/support/time.h>

using grpc::cpp::test::util::EchoRequest;
using grpc::cpp::test::util::EchoResponse;
using std::chrono::system_clock;

namespace grpc {
namespace testing {

namespace {

class End2endTest : public ::testing::Test {
 protected:
  End2endTest() : service_(&cq_) {}

  void SetUp() override {
    int port = grpc_pick_unused_port_or_die();
    server_address_ << "localhost:" << port;
    // Setup server
    ServerBuilder builder;
    builder.AddPort(server_address_.str());
    builder.RegisterAsyncService(&service_);
    server_ = builder.BuildAndStart();
  }

  void TearDown() override { server_->Shutdown(); }

  void ResetStub() {
    std::shared_ptr<ChannelInterface> channel =
        CreateChannel(server_address_.str(), ChannelArguments());
    stub_.reset(grpc::cpp::test::util::TestService::NewStub(channel));
  }

  CompletionQueue cq_;
  std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub_;
  std::unique_ptr<Server> server_;
  grpc::cpp::test::util::TestService::AsyncService service_;
  std::ostringstream server_address_;
};

void* tag(int i) {
  return (void*)(gpr_intptr)i;
}

TEST_F(End2endTest, SimpleRpc) {
  ResetStub();
  
  EchoRequest send_request;
  EchoRequest recv_request;
  EchoResponse send_response;
  EchoResponse recv_response;
  Status recv_status;
  ClientContext cli_ctx;
  ServerContext srv_ctx;
  grpc::ServerAsyncResponseWriter<EchoResponse> response_writer(&srv_ctx);

  send_request.set_message("Hello");
  stub_->Echo(&cli_ctx, send_request, &recv_response, &recv_status, &cq_, tag(1));

  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, &cq_, tag(2));

  void *got_tag;
  bool ok;
  EXPECT_TRUE(cq_.Next(&got_tag, &ok));
  EXPECT_TRUE(ok);
  EXPECT_EQ(got_tag, tag(2));
  EXPECT_EQ(recv_request.message(), "Hello");

  send_response.set_message(recv_request.message());
  response_writer.Finish(send_response, Status::OK, tag(3));

  EXPECT_TRUE(cq_.Next(&got_tag, &ok));
  EXPECT_TRUE(ok);
  if (got_tag == tag(3)) {
    EXPECT_TRUE(cq_.Next(&got_tag, &ok));
    EXPECT_TRUE(ok);
    EXPECT_EQ(got_tag, tag(1));
  } else {
    EXPECT_EQ(got_tag, tag(1));
    EXPECT_TRUE(cq_.Next(&got_tag, &ok));
    EXPECT_TRUE(ok);
    EXPECT_EQ(got_tag, tag(3));
  }

  EXPECT_EQ(recv_response.message(), "Hello");
  EXPECT_TRUE(recv_status.IsOk());
}

}  // namespace
}  // namespace testing
}  // namespace grpc

int main(int argc, char** argv) {
  grpc_test_init(argc, argv);
  grpc_init();
  ::testing::InitGoogleTest(&argc, argv);
  int result = RUN_ALL_TESTS();
  grpc_shutdown();
  google::protobuf::ShutdownProtobufLibrary();
  return result;
}