ipc/ipc_channel_posix_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // These tests are POSIX only.
   6
   7 #include "ipc/ipc_channel_posix.h"
   8
   9 #include <fcntl.h>
  10 #include <sys/socket.h>
  11 #include <sys/un.h>
  12 #include <unistd.h>
  13
  14 #include "base/basictypes.h"
  15 #include "base/files/file_path.h"
  16 #include "base/files/file_util.h"
  17 #include "base/memory/scoped_ptr.h"
  18 #include "base/message_loop/message_loop.h"
  19 #include "base/path_service.h"
  20 #include "base/posix/eintr_wrapper.h"
  21 #include "base/process/process.h"
  22 #include "base/test/multiprocess_test.h"
  23 #include "base/test/test_timeouts.h"
  24 #include "ipc/ipc_listener.h"
  25 #include "ipc/unix_domain_socket_util.h"
  26 #include "testing/multiprocess_func_list.h"
  27
  28 namespace {
  29
  30 static const uint32 kQuitMessage = 47;
  31
  32 class IPCChannelPosixTestListener : public IPC::Listener {
  33  public:
  34   enum STATUS {
  35     DISCONNECTED,
  36     MESSAGE_RECEIVED,
  37     CHANNEL_ERROR,
  38     CONNECTED,
  39     DENIED,
  40     LISTEN_ERROR
  41   };
  42
  43   IPCChannelPosixTestListener(bool quit_only_on_message)
  44       : status_(DISCONNECTED),
  45         quit_only_on_message_(quit_only_on_message) {
  46   }
  47
  48   ~IPCChannelPosixTestListener() override {}
  49
  50   bool OnMessageReceived(const IPC::Message& message) override {
  51     EXPECT_EQ(message.type(), kQuitMessage);
  52     status_ = MESSAGE_RECEIVED;
  53     QuitRunLoop();
  54     return true;
  55   }
  56
  57   void OnChannelConnected(int32 peer_pid) override {
  58     status_ = CONNECTED;
  59     if (!quit_only_on_message_) {
  60       QuitRunLoop();
  61     }
  62   }
  63
  64   void OnChannelError() override {
  65     status_ = CHANNEL_ERROR;
  66     QuitRunLoop();
  67   }
  68
  69   void OnChannelDenied() override {
  70     status_ = DENIED;
  71     if (!quit_only_on_message_) {
  72       QuitRunLoop();
  73     }
  74   }
  75
  76   void OnChannelListenError() override {
  77     status_ = LISTEN_ERROR;
  78     if (!quit_only_on_message_) {
  79       QuitRunLoop();
  80     }
  81   }
  82
  83   STATUS status() { return status_; }
  84
  85   void QuitRunLoop() {
  86     base::MessageLoopForIO* loop = base::MessageLoopForIO::current();
  87     if (loop->is_running()) {
  88       loop->QuitNow();
  89     } else {
  90       // Die as soon as Run is called.
  91       loop->PostTask(FROM_HERE, loop->QuitClosure());
  92     }
  93   }
  94
  95  private:
  96   // The current status of the listener.
  97   STATUS status_;
  98   // If |quit_only_on_message_| then the listener will only break out of
  99   // the run loop when kQuitMessage is received.
 100   bool quit_only_on_message_;
 101 };
 102
 103 class IPCChannelPosixTest : public base::MultiProcessTest {
 104  public:
 105   static void SetUpSocket(IPC::ChannelHandle *handle,
 106                           IPC::Channel::Mode mode);
 107   static void SpinRunLoop(base::TimeDelta delay);
 108   static const std::string GetConnectionSocketName();
 109   static const std::string GetChannelDirName();
 110
 111  protected:
 112   void SetUp() override;
 113   void TearDown() override;
 114
 115  private:
 116   scoped_ptr<base::MessageLoopForIO> message_loop_;
 117 };
 118
 119 const std::string IPCChannelPosixTest::GetChannelDirName() {
 120   base::FilePath tmp_dir;
 121   PathService::Get(base::DIR_TEMP, &tmp_dir);
 122   return tmp_dir.value();
 123 }
 124
 125 const std::string IPCChannelPosixTest::GetConnectionSocketName() {
 126   return GetChannelDirName() + "/chrome_IPCChannelPosixTest__ConnectionSocket";
 127 }
 128
 129 void IPCChannelPosixTest::SetUp() {
 130   MultiProcessTest::SetUp();
 131   // Construct a fresh IO Message loop for the duration of each test.
 132   message_loop_.reset(new base::MessageLoopForIO());
 133 }
 134
 135 void IPCChannelPosixTest::TearDown() {
 136   message_loop_.reset(NULL);
 137   MultiProcessTest::TearDown();
 138 }
 139
 140 // Create up a socket and bind and listen to it, or connect it
 141 // depending on the |mode|.
 142 void IPCChannelPosixTest::SetUpSocket(IPC::ChannelHandle *handle,
 143                                       IPC::Channel::Mode mode) {
 144   const std::string& name = handle->name;
 145
 146   int socket_fd = socket(PF_UNIX, SOCK_STREAM, 0);
 147   ASSERT_GE(socket_fd, 0) << name;
 148   ASSERT_GE(fcntl(socket_fd, F_SETFL, O_NONBLOCK), 0);
 149   struct sockaddr_un server_address = { 0 };
 150   memset(&server_address, 0, sizeof(server_address));
 151   server_address.sun_family = AF_UNIX;
 152   int path_len = snprintf(server_address.sun_path, IPC::kMaxSocketNameLength,
 153                           "%s", name.c_str());
 154   DCHECK_EQ(static_cast<int>(name.length()), path_len);
 155   size_t server_address_len = offsetof(struct sockaddr_un,
 156                                        sun_path) + path_len + 1;
 157
 158   if (mode == IPC::Channel::MODE_NAMED_SERVER) {
 159     // Only one server at a time. Cleanup garbage if it exists.
 160     unlink(name.c_str());
 161     // Make sure the path we need exists.
 162     base::FilePath path(name);
 163     base::FilePath dir_path = path.DirName();
 164     ASSERT_TRUE(base::CreateDirectory(dir_path));
 165     ASSERT_GE(bind(socket_fd,
 166                    reinterpret_cast<struct sockaddr *>(&server_address),
 167                    server_address_len), 0) << server_address.sun_path
 168                                            << ": " << strerror(errno)
 169                                            << "(" << errno << ")";
 170     ASSERT_GE(listen(socket_fd, SOMAXCONN), 0) << server_address.sun_path
 171                                                << ": " << strerror(errno)
 172                                                << "(" << errno << ")";
 173   } else if (mode == IPC::Channel::MODE_NAMED_CLIENT) {
 174     ASSERT_GE(connect(socket_fd,
 175                       reinterpret_cast<struct sockaddr *>(&server_address),
 176                       server_address_len), 0) << server_address.sun_path
 177                                               << ": " << strerror(errno)
 178                                               << "(" << errno << ")";
 179   } else {
 180     FAIL() << "Unknown mode " << mode;
 181   }
 182   handle->socket.fd = socket_fd;
 183 }
 184
 185 void IPCChannelPosixTest::SpinRunLoop(base::TimeDelta delay) {
 186   base::MessageLoopForIO* loop = base::MessageLoopForIO::current();
 187   // Post a quit task so that this loop eventually ends and we don't hang
 188   // in the case of a bad test. Usually, the run loop will quit sooner than
 189   // that because all tests use a IPCChannelPosixTestListener which quits the
 190   // current run loop on any channel activity.
 191   loop->PostDelayedTask(FROM_HERE, loop->QuitClosure(), delay);
 192   loop->Run();
 193 }
 194
 195 TEST_F(IPCChannelPosixTest, BasicListen) {
 196   const std::string kChannelName =
 197       GetChannelDirName() + "/IPCChannelPosixTest_BasicListen";
 198
 199   // Test creating a socket that is listening.
 200   IPC::ChannelHandle handle(kChannelName);
 201   SetUpSocket(&handle, IPC::Channel::MODE_NAMED_SERVER);
 202   unlink(handle.name.c_str());
 203   scoped_ptr<IPC::ChannelPosix> channel(
 204       new IPC::ChannelPosix(handle, IPC::Channel::MODE_NAMED_SERVER, NULL));
 205   ASSERT_TRUE(channel->Connect());
 206   ASSERT_TRUE(channel->AcceptsConnections());
 207   ASSERT_FALSE(channel->HasAcceptedConnection());
 208   channel->ResetToAcceptingConnectionState();
 209   ASSERT_FALSE(channel->HasAcceptedConnection());
 210   unlink(handle.name.c_str());
 211 }
 212
 213 TEST_F(IPCChannelPosixTest, BasicConnected) {
 214   // Test creating a socket that is connected.
 215   int pipe_fds[2];
 216   ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, pipe_fds));
 217   std::string socket_name("/var/tmp/IPCChannelPosixTest_BasicConnected");
 218   ASSERT_GE(fcntl(pipe_fds[0], F_SETFL, O_NONBLOCK), 0);
 219
 220   base::FileDescriptor fd(pipe_fds[0], false);
 221   IPC::ChannelHandle handle(socket_name, fd);
 222   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 223       handle, IPC::Channel::MODE_SERVER, NULL));
 224   ASSERT_TRUE(channel->Connect());
 225   ASSERT_FALSE(channel->AcceptsConnections());
 226   channel->Close();
 227   ASSERT_TRUE(IGNORE_EINTR(close(pipe_fds[1])) == 0);
 228
 229   // Make sure that we can use the socket that is created for us by
 230   // a standard channel.
 231   scoped_ptr<IPC::ChannelPosix> channel2(new IPC::ChannelPosix(
 232       socket_name, IPC::Channel::MODE_SERVER, NULL));
 233   ASSERT_TRUE(channel2->Connect());
 234   ASSERT_FALSE(channel2->AcceptsConnections());
 235 }
 236
 237 // If a connection closes right before a Send() call, we may end up closing
 238 // the connection without notifying the listener, which can cause hangs in
 239 // sync_message_filter and others. Make sure the listener is notified.
 240 TEST_F(IPCChannelPosixTest, SendHangTest) {
 241   IPCChannelPosixTestListener out_listener(true);
 242   IPCChannelPosixTestListener in_listener(true);
 243   IPC::ChannelHandle in_handle("IN");
 244   scoped_ptr<IPC::ChannelPosix> in_chan(new IPC::ChannelPosix(
 245       in_handle, IPC::Channel::MODE_SERVER, &in_listener));
 246   IPC::ChannelHandle out_handle(
 247       "OUT", base::FileDescriptor(in_chan->TakeClientFileDescriptor()));
 248   scoped_ptr<IPC::ChannelPosix> out_chan(new IPC::ChannelPosix(
 249       out_handle, IPC::Channel::MODE_CLIENT, &out_listener));
 250   ASSERT_TRUE(in_chan->Connect());
 251   ASSERT_TRUE(out_chan->Connect());
 252   in_chan->Close();  // simulate remote process dying at an unfortunate time.
 253   // Send will fail, because it cannot write the message.
 254   ASSERT_FALSE(out_chan->Send(new IPC::Message(
 255       0,  // routing_id
 256       kQuitMessage,  // message type
 257       IPC::Message::PRIORITY_NORMAL)));
 258   SpinRunLoop(TestTimeouts::action_max_timeout());
 259   ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, out_listener.status());
 260 }
 261
 262 // If a connection closes right before a Connect() call, we may end up closing
 263 // the connection without notifying the listener, which can cause hangs in
 264 // sync_message_filter and others. Make sure the listener is notified.
 265 TEST_F(IPCChannelPosixTest, AcceptHangTest) {
 266   IPCChannelPosixTestListener out_listener(true);
 267   IPCChannelPosixTestListener in_listener(true);
 268   IPC::ChannelHandle in_handle("IN");
 269   scoped_ptr<IPC::ChannelPosix> in_chan(new IPC::ChannelPosix(
 270       in_handle, IPC::Channel::MODE_SERVER, &in_listener));
 271   IPC::ChannelHandle out_handle(
 272       "OUT", base::FileDescriptor(in_chan->TakeClientFileDescriptor()));
 273   scoped_ptr<IPC::ChannelPosix> out_chan(new IPC::ChannelPosix(
 274       out_handle, IPC::Channel::MODE_CLIENT, &out_listener));
 275   ASSERT_TRUE(in_chan->Connect());
 276   in_chan->Close();  // simulate remote process dying at an unfortunate time.
 277   ASSERT_FALSE(out_chan->Connect());
 278   SpinRunLoop(TestTimeouts::action_max_timeout());
 279   ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, out_listener.status());
 280 }
 281
 282 TEST_F(IPCChannelPosixTest, AdvancedConnected) {
 283   // Test creating a connection to an external process.
 284   IPCChannelPosixTestListener listener(false);
 285   IPC::ChannelHandle chan_handle(GetConnectionSocketName());
 286   SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
 287   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 288       chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener));
 289   ASSERT_TRUE(channel->Connect());
 290   ASSERT_TRUE(channel->AcceptsConnections());
 291   ASSERT_FALSE(channel->HasAcceptedConnection());
 292
 293   base::Process process = SpawnChild("IPCChannelPosixTestConnectionProc");
 294   ASSERT_TRUE(process.IsValid());
 295   SpinRunLoop(TestTimeouts::action_max_timeout());
 296   ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
 297   ASSERT_TRUE(channel->HasAcceptedConnection());
 298   IPC::Message* message = new IPC::Message(0,  // routing_id
 299                                            kQuitMessage,  // message type
 300                                            IPC::Message::PRIORITY_NORMAL);
 301   channel->Send(message);
 302   SpinRunLoop(TestTimeouts::action_timeout());
 303   int exit_code = 0;
 304   EXPECT_TRUE(process.WaitForExit(&exit_code));
 305   EXPECT_EQ(0, exit_code);
 306   ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
 307   ASSERT_FALSE(channel->HasAcceptedConnection());
 308   unlink(chan_handle.name.c_str());
 309 }
 310
 311 TEST_F(IPCChannelPosixTest, ResetState) {
 312   // Test creating a connection to an external process. Close the connection,
 313   // but continue to listen and make sure another external process can connect
 314   // to us.
 315   IPCChannelPosixTestListener listener(false);
 316   IPC::ChannelHandle chan_handle(GetConnectionSocketName());
 317   SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
 318   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 319       chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener));
 320   ASSERT_TRUE(channel->Connect());
 321   ASSERT_TRUE(channel->AcceptsConnections());
 322   ASSERT_FALSE(channel->HasAcceptedConnection());
 323
 324   base::Process process = SpawnChild("IPCChannelPosixTestConnectionProc");
 325   ASSERT_TRUE(process.IsValid());
 326   SpinRunLoop(TestTimeouts::action_max_timeout());
 327   ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
 328   ASSERT_TRUE(channel->HasAcceptedConnection());
 329   channel->ResetToAcceptingConnectionState();
 330   ASSERT_FALSE(channel->HasAcceptedConnection());
 331
 332   base::Process process2 = SpawnChild("IPCChannelPosixTestConnectionProc");
 333   ASSERT_TRUE(process2.IsValid());
 334   SpinRunLoop(TestTimeouts::action_max_timeout());
 335   ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
 336   ASSERT_TRUE(channel->HasAcceptedConnection());
 337   IPC::Message* message = new IPC::Message(0,  // routing_id
 338                                            kQuitMessage,  // message type
 339                                            IPC::Message::PRIORITY_NORMAL);
 340   channel->Send(message);
 341   SpinRunLoop(TestTimeouts::action_timeout());
 342   EXPECT_TRUE(process.Terminate(0, false));
 343   int exit_code = 0;
 344   EXPECT_TRUE(process2.WaitForExit(&exit_code));
 345   EXPECT_EQ(0, exit_code);
 346   ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
 347   ASSERT_FALSE(channel->HasAcceptedConnection());
 348   unlink(chan_handle.name.c_str());
 349 }
 350
 351 TEST_F(IPCChannelPosixTest, BadChannelName) {
 352   // Test empty name
 353   IPC::ChannelHandle handle("");
 354   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 355       handle, IPC::Channel::MODE_NAMED_SERVER, NULL));
 356   ASSERT_FALSE(channel->Connect());
 357
 358   // Test name that is too long.
 359   const char *kTooLongName = "This_is_a_very_long_name_to_proactively_implement"
 360                              "client-centered_synergy_through_top-line"
 361                              "platforms_Phosfluorescently_disintermediate_"
 362                              "clicks-and-mortar_best_practices_without_"
 363                              "future-proof_growth_strategies_Continually"
 364                              "pontificate_proactive_potentialities_before"
 365                              "leading-edge_processes";
 366   EXPECT_GE(strlen(kTooLongName), IPC::kMaxSocketNameLength);
 367   IPC::ChannelHandle handle2(kTooLongName);
 368   scoped_ptr<IPC::ChannelPosix> channel2(new IPC::ChannelPosix(
 369       handle2, IPC::Channel::MODE_NAMED_SERVER, NULL));
 370   EXPECT_FALSE(channel2->Connect());
 371 }
 372
 373 TEST_F(IPCChannelPosixTest, MultiConnection) {
 374   // Test setting up a connection to an external process, and then have
 375   // another external process attempt to connect to us.
 376   IPCChannelPosixTestListener listener(false);
 377   IPC::ChannelHandle chan_handle(GetConnectionSocketName());
 378   SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
 379   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 380       chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener));
 381   ASSERT_TRUE(channel->Connect());
 382   ASSERT_TRUE(channel->AcceptsConnections());
 383   ASSERT_FALSE(channel->HasAcceptedConnection());
 384
 385   base::Process process = SpawnChild("IPCChannelPosixTestConnectionProc");
 386   ASSERT_TRUE(process.IsValid());
 387   SpinRunLoop(TestTimeouts::action_max_timeout());
 388   ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
 389   ASSERT_TRUE(channel->HasAcceptedConnection());
 390   base::Process process2 = SpawnChild("IPCChannelPosixFailConnectionProc");
 391   ASSERT_TRUE(process2.IsValid());
 392   SpinRunLoop(TestTimeouts::action_max_timeout());
 393   int exit_code = 0;
 394   EXPECT_TRUE(process2.WaitForExit(&exit_code));
 395   EXPECT_EQ(exit_code, 0);
 396   ASSERT_EQ(IPCChannelPosixTestListener::DENIED, listener.status());
 397   ASSERT_TRUE(channel->HasAcceptedConnection());
 398   IPC::Message* message = new IPC::Message(0,  // routing_id
 399                                            kQuitMessage,  // message type
 400                                            IPC::Message::PRIORITY_NORMAL);
 401   channel->Send(message);
 402   SpinRunLoop(TestTimeouts::action_timeout());
 403   EXPECT_TRUE(process.WaitForExit(&exit_code));
 404   EXPECT_EQ(exit_code, 0);
 405   ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
 406   ASSERT_FALSE(channel->HasAcceptedConnection());
 407   unlink(chan_handle.name.c_str());
 408 }
 409
 410 TEST_F(IPCChannelPosixTest, DoubleServer) {
 411   // Test setting up two servers with the same name.
 412   IPCChannelPosixTestListener listener(false);
 413   IPCChannelPosixTestListener listener2(false);
 414   IPC::ChannelHandle chan_handle(GetConnectionSocketName());
 415   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 416       chan_handle, IPC::Channel::MODE_SERVER, &listener));
 417   scoped_ptr<IPC::ChannelPosix> channel2(new IPC::ChannelPosix(
 418       chan_handle, IPC::Channel::MODE_SERVER, &listener2));
 419   ASSERT_TRUE(channel->Connect());
 420   ASSERT_FALSE(channel2->Connect());
 421 }
 422
 423 TEST_F(IPCChannelPosixTest, BadMode) {
 424   // Test setting up two servers with a bad mode.
 425   IPCChannelPosixTestListener listener(false);
 426   IPC::ChannelHandle chan_handle(GetConnectionSocketName());
 427   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 428       chan_handle, IPC::Channel::MODE_NONE, &listener));
 429   ASSERT_FALSE(channel->Connect());
 430 }
 431
 432 TEST_F(IPCChannelPosixTest, IsNamedServerInitialized) {
 433   const std::string& connection_socket_name = GetConnectionSocketName();
 434   IPCChannelPosixTestListener listener(false);
 435   IPC::ChannelHandle chan_handle(connection_socket_name);
 436   ASSERT_TRUE(base::DeleteFile(base::FilePath(connection_socket_name), false));
 437   ASSERT_FALSE(IPC::Channel::IsNamedServerInitialized(
 438       connection_socket_name));
 439   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 440       chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener));
 441   ASSERT_TRUE(IPC::Channel::IsNamedServerInitialized(
 442       connection_socket_name));
 443   channel->Close();
 444   ASSERT_FALSE(IPC::Channel::IsNamedServerInitialized(
 445       connection_socket_name));
 446   unlink(chan_handle.name.c_str());
 447 }
 448
 449 // A long running process that connects to us
 450 MULTIPROCESS_TEST_MAIN(IPCChannelPosixTestConnectionProc) {
 451   base::MessageLoopForIO message_loop;
 452   IPCChannelPosixTestListener listener(true);
 453   IPC::ChannelHandle handle(IPCChannelPosixTest::GetConnectionSocketName());
 454   IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT);
 455   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 456       handle, IPC::Channel::MODE_NAMED_CLIENT, &listener));
 457   EXPECT_TRUE(channel->Connect());
 458   IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_max_timeout());
 459   EXPECT_EQ(IPCChannelPosixTestListener::MESSAGE_RECEIVED, listener.status());
 460   return 0;
 461 }
 462
 463 // Simple external process that shouldn't be able to connect to us.
 464 MULTIPROCESS_TEST_MAIN(IPCChannelPosixFailConnectionProc) {
 465   base::MessageLoopForIO message_loop;
 466   IPCChannelPosixTestListener listener(false);
 467   IPC::ChannelHandle handle(IPCChannelPosixTest::GetConnectionSocketName());
 468   IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT);
 469   scoped_ptr<IPC::ChannelPosix> channel(new IPC::ChannelPosix(
 470       handle, IPC::Channel::MODE_NAMED_CLIENT, &listener));
 471
 472   // In this case connect may succeed or fail depending on if the packet
 473   // actually gets sent at sendmsg. Since we never delay on send, we may not
 474   // see the error. However even if connect succeeds, eventually we will get an
 475   // error back since the channel will be closed when we attempt to read from
 476   // it.
 477   bool connected = channel->Connect();
 478   if (connected) {
 479     IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_max_timeout());
 480     EXPECT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
 481   } else {
 482     EXPECT_EQ(IPCChannelPosixTestListener::DISCONNECTED, listener.status());
 483   }
 484   return 0;
 485 }
 486
 487 }  // namespace