Separates ipc code from common (http://crbug.com/16829)

ipc/ipc_tests.cc

Index: ipc/ipc_tests.cc
diff --git a/ipc/ipc_tests.cc b/ipc/ipc_tests.cc
new file mode 100644
index 0000000000000000000000000000000000000000..172284eeadd360513202f6e3ac05a138376844ea
--- /dev/null
+++ b/ipc/ipc_tests.cc
@@ -0,0 +1,476 @@
+// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <windows.h>
+#elif defined(OS_POSIX)
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <iostream>
+#include <string>
+
+#include "ipc/ipc_tests.h"
+
+#include "base/at_exit.h"
+#include "base/base_switches.h"
+#include "base/command_line.h"
+#include "base/debug_on_start.h"
+#if defined(OS_POSIX)
+#include "base/at_exit.h"
+#include "base/global_descriptors_posix.h"
+#endif
+#include "base/perftimer.h"
+#include "base/perf_test_suite.h"
+#include "base/test_suite.h"
+#include "base/thread.h"
+#include "ipc/ipc_descriptors.h"
+#include "ipc/ipc_channel.h"
+#include "ipc/ipc_channel_proxy.h"
+#include "ipc/ipc_message_utils.h"
+#include "ipc/ipc_switches.h"
+#include "testing/multiprocess_func_list.h"
+
+// Define to enable IPC performance testing instead of the regular unit tests
+// #define PERFORMANCE_TEST
+
+const char kTestClientChannel[] = "T1";
+const char kReflectorChannel[] = "T2";
+const char kFuzzerChannel[] = "F3";
+
+const size_t kLongMessageStringNumBytes = 50000;
+
+#ifndef PERFORMANCE_TEST
+
+void IPCChannelTest::SetUp() {
+  MultiProcessTest::SetUp();
+
+  // Construct a fresh IO Message loop for the duration of each test.
+  message_loop_ = new MessageLoopForIO();
+}
+
+void IPCChannelTest::TearDown() {
+  delete message_loop_;
+  message_loop_ = NULL;
+
+  MultiProcessTest::TearDown();
+}
+
+#if defined(OS_WIN)
+base::ProcessHandle IPCChannelTest::SpawnChild(ChildType child_type,
+                                               IPC::Channel *channel) {
+  // kDebugChildren support.
+  bool debug_on_start =
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kDebugChildren);
+
+  switch (child_type) {
+  case TEST_CLIENT:
+    return MultiProcessTest::SpawnChild(L"RunTestClient", debug_on_start);
+    break;
+  case TEST_REFLECTOR:
+    return MultiProcessTest::SpawnChild(L"RunReflector", debug_on_start);
+    break;
+  case FUZZER_SERVER:
+    return MultiProcessTest::SpawnChild(L"RunFuzzServer", debug_on_start);
+    break;
+  default:
+    return NULL;
+    break;
+  }
+}
+#elif defined(OS_POSIX)
+base::ProcessHandle IPCChannelTest::SpawnChild(ChildType child_type,
+                                               IPC::Channel *channel) {
+  // kDebugChildren support.
+  bool debug_on_start =
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kDebugChildren);
+
+  base::file_handle_mapping_vector fds_to_map;
+  const int ipcfd = channel->GetClientFileDescriptor();
+  if (ipcfd > -1) {
+    fds_to_map.push_back(std::pair<int,int>(ipcfd, kPrimaryIPCChannel + 3));
+  }
+
+  base::ProcessHandle ret = NULL;
+  switch (child_type) {
+  case TEST_CLIENT:
+    ret = MultiProcessTest::SpawnChild(L"RunTestClient",
+                                       fds_to_map,
+                                       debug_on_start);
+    break;
+  case TEST_DESCRIPTOR_CLIENT:
+    ret = MultiProcessTest::SpawnChild(L"RunTestDescriptorClient",
+                                       fds_to_map,
+                                       debug_on_start);
+    break;
+  case TEST_DESCRIPTOR_CLIENT_SANDBOXED:
+    ret = MultiProcessTest::SpawnChild(L"RunTestDescriptorClientSandboxed",
+                                       fds_to_map,
+                                       debug_on_start);
+    break;
+  case TEST_REFLECTOR:
+    ret = MultiProcessTest::SpawnChild(L"RunReflector",
+                                       fds_to_map,
+                                       debug_on_start);
+    break;
+  case FUZZER_SERVER:
+    ret = MultiProcessTest::SpawnChild(L"RunFuzzServer",
+                                       fds_to_map,
+                                       debug_on_start);
+    break;
+  default:
+    return NULL;
+    break;
+  }
+  return ret;
+}
+#endif  // defined(OS_POSIX)
+
+TEST_F(IPCChannelTest, BasicMessageTest) {
+  int v1 = 10;
+  std::string v2("foobar");
+  std::wstring v3(L"hello world");
+
+  IPC::Message m(0, 1, IPC::Message::PRIORITY_NORMAL);
+  EXPECT_TRUE(m.WriteInt(v1));
+  EXPECT_TRUE(m.WriteString(v2));
+  EXPECT_TRUE(m.WriteWString(v3));
+
+  void* iter = NULL;
+
+  int vi;
+  std::string vs;
+  std::wstring vw;
+
+  EXPECT_TRUE(m.ReadInt(&iter, &vi));
+  EXPECT_EQ(v1, vi);
+
+  EXPECT_TRUE(m.ReadString(&iter, &vs));
+  EXPECT_EQ(v2, vs);
+
+  EXPECT_TRUE(m.ReadWString(&iter, &vw));
+  EXPECT_EQ(v3, vw);
+
+  // should fail
+  EXPECT_FALSE(m.ReadInt(&iter, &vi));
+  EXPECT_FALSE(m.ReadString(&iter, &vs));
+  EXPECT_FALSE(m.ReadWString(&iter, &vw));
+}
+
+static void Send(IPC::Message::Sender* sender, const char* text) {
+  static int message_index = 0;
+
+  IPC::Message* message = new IPC::Message(0,
+                                           2,
+                                           IPC::Message::PRIORITY_NORMAL);
+  message->WriteInt(message_index++);
+  message->WriteString(std::string(text));
+
+  // Make sure we can handle large messages.
+  char junk[kLongMessageStringNumBytes];
+  memset(junk, 'a', sizeof(junk)-1);
+  junk[sizeof(junk)-1] = 0;
+  message->WriteString(std::string(junk));
+
+  // DEBUG: printf("[%u] sending message [%s]\n", GetCurrentProcessId(), text);
+  sender->Send(message);
+}
+
+class MyChannelListener : public IPC::Channel::Listener {
+ public:
+  virtual void OnMessageReceived(const IPC::Message& message) {
+    IPC::MessageIterator iter(message);
+
+    iter.NextInt();
+    const std::string data = iter.NextString();
+    const std::string big_string = iter.NextString();
+    EXPECT_EQ(kLongMessageStringNumBytes - 1, big_string.length());
+
+
+    if (--messages_left_ == 0) {
+      MessageLoop::current()->Quit();
+    } else {
+      Send(sender_, "Foo");
+    }
+  }
+
+  virtual void OnChannelError() {
+    // There is a race when closing the channel so the last message may be lost.
+    EXPECT_LE(messages_left_, 1);
+    MessageLoop::current()->Quit();
+  }
+
+  void Init(IPC::Message::Sender* s) {
+    sender_ = s;
+    messages_left_ = 50;
+  }
+
+ private:
+  IPC::Message::Sender* sender_;
+  int messages_left_;
+};
+
+TEST_F(IPCChannelTest, ChannelTest) {
+  MyChannelListener channel_listener;
+  // Setup IPC channel.
+  IPC::Channel chan(kTestClientChannel, IPC::Channel::MODE_SERVER,
+                    &channel_listener);
+  chan.Connect();
+
+  channel_listener.Init(&chan);
+
+  base::ProcessHandle process_handle = SpawnChild(TEST_CLIENT, &chan);
+  ASSERT_TRUE(process_handle);
+
+  Send(&chan, "hello from parent");
+
+  // Run message loop.
+  MessageLoop::current()->Run();
+
+  // Close Channel so client gets its OnChannelError() callback fired.
+  chan.Close();
+
+  // Cleanup child process.
+  EXPECT_TRUE(base::WaitForSingleProcess(process_handle, 5000));
+  base::CloseProcessHandle(process_handle);
+}
+
+TEST_F(IPCChannelTest, ChannelProxyTest) {
+  MyChannelListener channel_listener;
+
+  // The thread needs to out-live the ChannelProxy.
+  base::Thread thread("ChannelProxyTestServer");
+  base::Thread::Options options;
+  options.message_loop_type = MessageLoop::TYPE_IO;
+  thread.StartWithOptions(options);
+  {
+    // setup IPC channel proxy
+    IPC::ChannelProxy chan(kTestClientChannel, IPC::Channel::MODE_SERVER,
+                           &channel_listener, NULL, thread.message_loop());
+
+    channel_listener.Init(&chan);
+
+#if defined(OS_WIN)
+    base::ProcessHandle process_handle = SpawnChild(TEST_CLIENT, NULL);
+#elif defined(OS_POSIX)
+    bool debug_on_start = CommandLine::ForCurrentProcess()->HasSwitch(
+                              switches::kDebugChildren);
+    base::file_handle_mapping_vector fds_to_map;
+    const int ipcfd = chan.GetClientFileDescriptor();
+    if (ipcfd > -1) {
+      fds_to_map.push_back(std::pair<int,int>(ipcfd, kPrimaryIPCChannel + 3));
+    }
+
+    base::ProcessHandle process_handle = MultiProcessTest::SpawnChild(
+        L"RunTestClient",
+        fds_to_map,
+        debug_on_start);
+#endif  // defined(OS_POXIX)
+
+    ASSERT_TRUE(process_handle);
+
+    Send(&chan, "hello from parent");
+
+    // run message loop
+    MessageLoop::current()->Run();
+
+    // cleanup child process
+    EXPECT_TRUE(base::WaitForSingleProcess(process_handle, 5000));
+    base::CloseProcessHandle(process_handle);
+  }
+  thread.Stop();
+}
+
+MULTIPROCESS_TEST_MAIN(RunTestClient) {
+  MessageLoopForIO main_message_loop;
+  MyChannelListener channel_listener;
+
+  // setup IPC channel
+  IPC::Channel chan(kTestClientChannel, IPC::Channel::MODE_CLIENT,
+                    &channel_listener);
+  chan.Connect();
+  channel_listener.Init(&chan);
+  Send(&chan, "hello from child");
+  // run message loop
+  MessageLoop::current()->Run();
+  // return true;
+  return NULL;
+}
+
+#endif  // !PERFORMANCE_TEST
+
+#ifdef PERFORMANCE_TEST
+
+//-----------------------------------------------------------------------------
+// Manually performance test
+//
+//    This test times the roundtrip IPC message cycle. It is enabled with a
+//    special preprocessor define to enable it instead of the standard IPC
+//    unit tests. This works around some funny termination conditions in the
+//    regular unit tests.
+//
+//    This test is not automated. To test, you will want to vary the message
+//    count and message size in TEST to get the numbers you want.
+//
+//    FIXME(brettw): Automate this test and have it run by default.
+
+// This channel listener just replies to all messages with the exact same
+// message. It assumes each message has one string parameter. When the string
+// "quit" is sent, it will exit.
+class ChannelReflectorListener : public IPC::Channel::Listener {
+ public:
+  explicit ChannelReflectorListener(IPC::Channel *channel) :
+    channel_(channel),
+    count_messages_(0),
+    latency_messages_(0) {
+    std::cout << "Reflector up" << std::endl;
+  }
+
+  ~ChannelReflectorListener() {
+    std::cout << "Client Messages: " << count_messages_ << std::endl;
+    std::cout << "Client Latency: " << latency_messages_ << std::endl;
+  }
+
+  virtual void OnMessageReceived(const IPC::Message& message) {
+    count_messages_++;
+    IPC::MessageIterator iter(message);
+    int time = iter.NextInt();
+    int msgid = iter.NextInt();
+    std::string payload = iter.NextString();
+    latency_messages_ += GetTickCount() - time;
+
+    // cout << "reflector msg received: " << msgid << endl;
+    if (payload == "quit")
+      MessageLoop::current()->Quit();
+
+    IPC::Message* msg = new IPC::Message(0,
+                                         2,
+                                         IPC::Message::PRIORITY_NORMAL);
+    msg->WriteInt(GetTickCount());
+    msg->WriteInt(msgid);
+    msg->WriteString(payload);
+    channel_->Send(msg);
+  }
+ private:
+  IPC::Channel *channel_;
+  int count_messages_;
+  int latency_messages_;
+};
+
+class ChannelPerfListener : public IPC::Channel::Listener {
+ public:
+  ChannelPerfListener(IPC::Channel* channel, int msg_count, int msg_size) :
+       count_down_(msg_count),
+       channel_(channel),
+       count_messages_(0),
+       latency_messages_(0) {
+    payload_.resize(msg_size);
+    for (int i = 0; i < static_cast<int>(payload_.size()); i++)
+      payload_[i] = 'a';
+    std::cout << "perflistener up" << std::endl;
+  }
+
+  ~ChannelPerfListener() {
+    std::cout << "Server Messages: " << count_messages_ << std::endl;
+    std::cout << "Server Latency: " << latency_messages_ << std::endl;
+  }
+
+  virtual void OnMessageReceived(const IPC::Message& message) {
+    count_messages_++;
+    // decode the string so this gets counted in the total time
+    IPC::MessageIterator iter(message);
+    int time = iter.NextInt();
+    int msgid = iter.NextInt();
+    std::string cur = iter.NextString();
+    latency_messages_ += GetTickCount() - time;
+
+    // cout << "perflistener got message" << endl;
+
+    count_down_--;
+    if (count_down_ == 0) {
+      IPC::Message* msg = new IPC::Message(0,
+                                           2,
+                                           IPC::Message::PRIORITY_NORMAL);
+      msg->WriteInt(GetTickCount());
+      msg->WriteInt(count_down_);
+      msg->WriteString("quit");
+      channel_->Send(msg);
+      SetTimer(NULL, 1, 250, (TIMERPROC) PostQuitMessage);
+      return;
+    }
+
+    IPC::Message* msg = new IPC::Message(0,
+                                         2,
+                                         IPC::Message::PRIORITY_NORMAL);
+    msg->WriteInt(GetTickCount());
+    msg->WriteInt(count_down_);
+    msg->WriteString(payload_);
+    channel_->Send(msg);
+  }
+
+ private:
+  int count_down_;
+  std::string payload_;
+  IPC::Channel *channel_;
+  int count_messages_;
+  int latency_messages_;
+};
+
+TEST_F(IPCChannelTest, Performance) {
+  // setup IPC channel
+  IPC::Channel chan(kReflectorChannel, IPC::Channel::MODE_SERVER, NULL);
+  ChannelPerfListener perf_listener(&chan, 10000, 100000);
+  chan.set_listener(&perf_listener);
+  chan.Connect();
+
+  HANDLE process = SpawnChild(TEST_REFLECTOR, &chan);
+  ASSERT_TRUE(process);
+
+  PlatformThread::Sleep(1000);
+
+  PerfTimeLogger logger("IPC_Perf");
+
+  // this initial message will kick-start the ping-pong of messages
+  IPC::Message* message = new IPC::Message(0,
+                                           2,
+                                           IPC::Message::PRIORITY_NORMAL);
+  message->WriteInt(GetTickCount());
+  message->WriteInt(-1);
+  message->WriteString("Hello");
+  chan.Send(message);
+
+  // run message loop
+  MessageLoop::current()->Run();
+
+  // cleanup child process
+  WaitForSingleObject(process, 5000);
+  CloseHandle(process);
+}
+
+// This message loop bounces all messages back to the sender
+MULTIPROCESS_TEST_MAIN(RunReflector) {
+  MessageLoopForIO main_message_loop;
+  IPC::Channel chan(kReflectorChannel, IPC::Channel::MODE_CLIENT, NULL);
+  ChannelReflectorListener channel_reflector_listener(&chan);
+  chan.set_listener(&channel_reflector_listener);
+  chan.Connect();
+
+  MessageLoop::current()->Run();
+  return true;
+}
+
+#endif  // PERFORMANCE_TEST
+
+int main(int argc, char** argv) {
+#ifdef PERFORMANCE_TEST
+  int retval = PerfTestSuite(argc, argv).Run();
+#else
+  int retval = TestSuite(argc, argv).Run();
+#endif
+  return retval;
+}