Initial checkin of gRPC to third_party/

third_party/grpc/test/cpp/end2end/mock_test.cc

Index: third_party/grpc/test/cpp/end2end/mock_test.cc
diff --git a/third_party/grpc/test/cpp/end2end/mock_test.cc b/third_party/grpc/test/cpp/end2end/mock_test.cc
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+/*
+ *
+ * Copyright 2015-2016, 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.
+ *
+ */
+
+#include <thread>
+
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc++/server_context.h>
+#include <grpc/grpc.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+#include <gtest/gtest.h>
+
+#include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+using grpc::testing::EchoRequest;
+using grpc::testing::EchoResponse;
+using grpc::testing::EchoTestService;
+using std::chrono::system_clock;
+
+namespace grpc {
+namespace testing {
+
+namespace {
+template <class W, class R>
+class MockClientReaderWriter GRPC_FINAL
+    : public ClientReaderWriterInterface<W, R> {
+ public:
+  void WaitForInitialMetadata() GRPC_OVERRIDE {}
+  bool Read(R* msg) GRPC_OVERRIDE { return true; }
+  bool Write(const W& msg) GRPC_OVERRIDE { return true; }
+  bool WritesDone() GRPC_OVERRIDE { return true; }
+  Status Finish() GRPC_OVERRIDE { return Status::OK; }
+};
+template <>
+class MockClientReaderWriter<EchoRequest, EchoResponse> GRPC_FINAL
+    : public ClientReaderWriterInterface<EchoRequest, EchoResponse> {
+ public:
+  MockClientReaderWriter() : writes_done_(false) {}
+  void WaitForInitialMetadata() GRPC_OVERRIDE {}
+  bool Read(EchoResponse* msg) GRPC_OVERRIDE {
+    if (writes_done_) return false;
+    msg->set_message(last_message_);
+    return true;
+  }
+
+  bool Write(const EchoRequest& msg,
+             const WriteOptions& options) GRPC_OVERRIDE {
+    gpr_log(GPR_INFO, "mock recv msg %s", msg.message().c_str());
+    last_message_ = msg.message();
+    return true;
+  }
+  bool WritesDone() GRPC_OVERRIDE {
+    writes_done_ = true;
+    return true;
+  }
+  Status Finish() GRPC_OVERRIDE { return Status::OK; }
+
+ private:
+  bool writes_done_;
+  grpc::string last_message_;
+};
+
+// Mocked stub.
+class MockStub : public EchoTestService::StubInterface {
+ public:
+  MockStub() {}
+  ~MockStub() {}
+  Status Echo(ClientContext* context, const EchoRequest& request,
+              EchoResponse* response) GRPC_OVERRIDE {
+    response->set_message(request.message());
+    return Status::OK;
+  }
+  Status Unimplemented(ClientContext* context, const EchoRequest& request,
+                       EchoResponse* response) GRPC_OVERRIDE {
+    return Status::OK;
+  }
+
+ private:
+  ClientAsyncResponseReaderInterface<EchoResponse>* AsyncEchoRaw(
+      ClientContext* context, const EchoRequest& request,
+      CompletionQueue* cq) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientWriterInterface<EchoRequest>* RequestStreamRaw(
+      ClientContext* context, EchoResponse* response) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientAsyncWriterInterface<EchoRequest>* AsyncRequestStreamRaw(
+      ClientContext* context, EchoResponse* response, CompletionQueue* cq,
+      void* tag) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientReaderInterface<EchoResponse>* ResponseStreamRaw(
+      ClientContext* context, const EchoRequest& request) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientAsyncReaderInterface<EchoResponse>* AsyncResponseStreamRaw(
+      ClientContext* context, const EchoRequest& request, CompletionQueue* cq,
+      void* tag) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientReaderWriterInterface<EchoRequest, EchoResponse>* BidiStreamRaw(
+      ClientContext* context) GRPC_OVERRIDE {
+    return new MockClientReaderWriter<EchoRequest, EchoResponse>();
+  }
+  ClientAsyncReaderWriterInterface<EchoRequest, EchoResponse>*
+  AsyncBidiStreamRaw(ClientContext* context, CompletionQueue* cq,
+                     void* tag) GRPC_OVERRIDE {
+    return nullptr;
+  }
+  ClientAsyncResponseReaderInterface<EchoResponse>* AsyncUnimplementedRaw(
+      ClientContext* context, const EchoRequest& request,
+      CompletionQueue* cq) GRPC_OVERRIDE {
+    return nullptr;
+  }
+};
+
+class FakeClient {
+ public:
+  explicit FakeClient(EchoTestService::StubInterface* stub) : stub_(stub) {}
+
+  void DoEcho() {
+    ClientContext context;
+    EchoRequest request;
+    EchoResponse response;
+    request.set_message("hello world");
+    Status s = stub_->Echo(&context, request, &response);
+    EXPECT_EQ(request.message(), response.message());
+    EXPECT_TRUE(s.ok());
+  }
+
+  void DoBidiStream() {
+    EchoRequest request;
+    EchoResponse response;
+    ClientContext context;
+    grpc::string msg("hello");
+
+    std::unique_ptr<ClientReaderWriterInterface<EchoRequest, EchoResponse>>
+        stream = stub_->BidiStream(&context);
+
+    request.set_message(msg + "0");
+    EXPECT_TRUE(stream->Write(request));
+    EXPECT_TRUE(stream->Read(&response));
+    EXPECT_EQ(response.message(), request.message());
+
+    request.set_message(msg + "1");
+    EXPECT_TRUE(stream->Write(request));
+    EXPECT_TRUE(stream->Read(&response));
+    EXPECT_EQ(response.message(), request.message());
+
+    request.set_message(msg + "2");
+    EXPECT_TRUE(stream->Write(request));
+    EXPECT_TRUE(stream->Read(&response));
+    EXPECT_EQ(response.message(), request.message());
+
+    stream->WritesDone();
+    EXPECT_FALSE(stream->Read(&response));
+
+    Status s = stream->Finish();
+    EXPECT_TRUE(s.ok());
+  }
+
+  void ResetStub(EchoTestService::StubInterface* stub) { stub_ = stub; }
+
+ private:
+  EchoTestService::StubInterface* stub_;
+};
+
+class TestServiceImpl : public EchoTestService::Service {
+ public:
+  Status Echo(ServerContext* context, const EchoRequest* request,
+              EchoResponse* response) GRPC_OVERRIDE {
+    response->set_message(request->message());
+    return Status::OK;
+  }
+
+  Status BidiStream(ServerContext* context,
+                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
+      GRPC_OVERRIDE {
+    EchoRequest request;
+    EchoResponse response;
+    while (stream->Read(&request)) {
+      gpr_log(GPR_INFO, "recv msg %s", request.message().c_str());
+      response.set_message(request.message());
+      stream->Write(response);
+    }
+    return Status::OK;
+  }
+};
+
+class MockTest : public ::testing::Test {
+ protected:
+  MockTest() {}
+
+  void SetUp() GRPC_OVERRIDE {
+    int port = grpc_pick_unused_port_or_die();
+    server_address_ << "localhost:" << port;
+    // Setup server
+    ServerBuilder builder;
+    builder.AddListeningPort(server_address_.str(),
+                             InsecureServerCredentials());
+    builder.RegisterService(&service_);
+    server_ = builder.BuildAndStart();
+  }
+
+  void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
+
+  void ResetStub() {
+    std::shared_ptr<Channel> channel =
+        CreateChannel(server_address_.str(), InsecureChannelCredentials());
+    stub_ = grpc::testing::EchoTestService::NewStub(channel);
+  }
+
+  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
+  std::unique_ptr<Server> server_;
+  std::ostringstream server_address_;
+  TestServiceImpl service_;
+};
+
+// Do one real rpc and one mocked one
+TEST_F(MockTest, SimpleRpc) {
+  ResetStub();
+  FakeClient client(stub_.get());
+  client.DoEcho();
+  MockStub stub;
+  client.ResetStub(&stub);
+  client.DoEcho();
+}
+
+TEST_F(MockTest, BidiStream) {
+  ResetStub();
+  FakeClient client(stub_.get());
+  client.DoBidiStream();
+  MockStub stub;
+  client.ResetStub(&stub);
+  client.DoBidiStream();
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}