Straightens outs DEPS in mojo/common

mojo/common/handle_watcher_unittest.cc

Index: mojo/common/handle_watcher_unittest.cc
diff --git a/mojo/common/handle_watcher_unittest.cc b/mojo/common/handle_watcher_unittest.cc
deleted file mode 100644
index 41d5ffbe52bd8744769f04c82e2b82e69075665e..0000000000000000000000000000000000000000
--- a/mojo/common/handle_watcher_unittest.cc
+++ /dev/null
@@ -1,483 +0,0 @@
-// Copyright 2013 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 "mojo/common/handle_watcher.h"
-
-#include <string>
-
-#include "base/at_exit.h"
-#include "base/auto_reset.h"
-#include "base/bind.h"
-#include "base/memory/scoped_vector.h"
-#include "base/run_loop.h"
-#include "base/test/simple_test_tick_clock.h"
-#include "base/threading/thread.h"
-#include "mojo/common/message_pump_mojo.h"
-#include "mojo/common/time_helper.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/mojo/src/mojo/public/cpp/system/core.h"
-#include "third_party/mojo/src/mojo/public/cpp/test_support/test_utils.h"
-
-namespace mojo {
-namespace common {
-namespace test {
-
-enum MessageLoopConfig {
-  MESSAGE_LOOP_CONFIG_DEFAULT = 0,
-  MESSAGE_LOOP_CONFIG_MOJO = 1
-};
-
-void ObserveCallback(bool* was_signaled,
-                     MojoResult* result_observed,
-                     MojoResult result) {
-  *was_signaled = true;
-  *result_observed = result;
-}
-
-void RunUntilIdle() {
-  base::RunLoop run_loop;
-  run_loop.RunUntilIdle();
-}
-
-void DeleteWatcherAndForwardResult(
-    HandleWatcher* watcher,
-    base::Callback<void(MojoResult)> next_callback,
-    MojoResult result) {
-  delete watcher;
-  next_callback.Run(result);
-}
-
-scoped_ptr<base::MessageLoop> CreateMessageLoop(MessageLoopConfig config) {
-  scoped_ptr<base::MessageLoop> loop;
-  if (config == MESSAGE_LOOP_CONFIG_DEFAULT)
-    loop.reset(new base::MessageLoop());
-  else
-    loop.reset(new base::MessageLoop(MessagePumpMojo::Create()));
-  return loop.Pass();
-}
-
-// Helper class to manage the callback and running the message loop waiting for
-// message to be received. Typical usage is something like:
-//   Schedule callback returned from GetCallback().
-//   RunUntilGotCallback();
-//   EXPECT_TRUE(got_callback());
-//   clear_callback();
-class CallbackHelper {
- public:
-  CallbackHelper()
-      : got_callback_(false),
-        run_loop_(NULL),
-        weak_factory_(this) {}
-  ~CallbackHelper() {}
-
-  // See description above |got_callback_|.
-  bool got_callback() const { return got_callback_; }
-  void clear_callback() { got_callback_ = false; }
-
-  // Runs the current MessageLoop until the callback returned from GetCallback()
-  // is notified.
-  void RunUntilGotCallback() {
-    ASSERT_TRUE(run_loop_ == NULL);
-    base::RunLoop run_loop;
-    base::AutoReset<base::RunLoop*> reseter(&run_loop_, &run_loop);
-    run_loop.Run();
-  }
-
-  base::Callback<void(MojoResult)> GetCallback() {
-    return base::Bind(&CallbackHelper::OnCallback, weak_factory_.GetWeakPtr());
-  }
-
-  void Start(HandleWatcher* watcher, const MessagePipeHandle& handle) {
-    StartWithCallback(watcher, handle, GetCallback());
-  }
-
-  void StartWithCallback(HandleWatcher* watcher,
-                         const MessagePipeHandle& handle,
-                         const base::Callback<void(MojoResult)>& callback) {
-    watcher->Start(handle, MOJO_HANDLE_SIGNAL_READABLE,
-                   MOJO_DEADLINE_INDEFINITE, callback);
-  }
-
- private:
-  void OnCallback(MojoResult result) {
-    got_callback_ = true;
-    if (run_loop_)
-      run_loop_->Quit();
-  }
-
-  // Set to true when the callback is called.
-  bool got_callback_;
-
-  // If non-NULL we're in RunUntilGotCallback().
-  base::RunLoop* run_loop_;
-
-  base::WeakPtrFactory<CallbackHelper> weak_factory_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CallbackHelper);
-};
-
-class HandleWatcherTest : public testing::TestWithParam<MessageLoopConfig> {
- public:
-  HandleWatcherTest() : message_loop_(CreateMessageLoop(GetParam())) {}
-  virtual ~HandleWatcherTest() {
-    test::SetTickClockForTest(NULL);
-  }
-
- protected:
-  void TearDownMessageLoop() {
-    message_loop_.reset();
-  }
-
-  void InstallTickClock() {
-    test::SetTickClockForTest(&tick_clock_);
-  }
-
-  base::SimpleTestTickClock tick_clock_;
-
- private:
-  base::ShadowingAtExitManager at_exit_;
-  scoped_ptr<base::MessageLoop> message_loop_;
-
-  DISALLOW_COPY_AND_ASSIGN(HandleWatcherTest);
-};
-
-INSTANTIATE_TEST_CASE_P(
-    MultipleMessageLoopConfigs, HandleWatcherTest,
-    testing::Values(MESSAGE_LOOP_CONFIG_DEFAULT, MESSAGE_LOOP_CONFIG_MOJO));
-
-// Trivial test case with a single handle to watch.
-TEST_P(HandleWatcherTest, SingleHandler) {
-  MessagePipe test_pipe;
-  ASSERT_TRUE(test_pipe.handle0.is_valid());
-  CallbackHelper callback_helper;
-  HandleWatcher watcher;
-  callback_helper.Start(&watcher, test_pipe.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper.got_callback());
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe.handle1.get(),
-                                           std::string()));
-  callback_helper.RunUntilGotCallback();
-  EXPECT_TRUE(callback_helper.got_callback());
-}
-
-// Creates three handles and notfies them in reverse order ensuring each one is
-// notified appropriately.
-TEST_P(HandleWatcherTest, ThreeHandles) {
-  MessagePipe test_pipe1;
-  MessagePipe test_pipe2;
-  MessagePipe test_pipe3;
-  CallbackHelper callback_helper1;
-  CallbackHelper callback_helper2;
-  CallbackHelper callback_helper3;
-  ASSERT_TRUE(test_pipe1.handle0.is_valid());
-  ASSERT_TRUE(test_pipe2.handle0.is_valid());
-  ASSERT_TRUE(test_pipe3.handle0.is_valid());
-
-  HandleWatcher watcher1;
-  callback_helper1.Start(&watcher1, test_pipe1.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-
-  HandleWatcher watcher2;
-  callback_helper2.Start(&watcher2, test_pipe2.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-
-  HandleWatcher watcher3;
-  callback_helper3.Start(&watcher3, test_pipe3.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-
-  // Write to 3 and make sure it's notified.
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe3.handle1.get(),
-                                           std::string()));
-  callback_helper3.RunUntilGotCallback();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_TRUE(callback_helper3.got_callback());
-  callback_helper3.clear_callback();
-
-  // Write to 1 and 3. Only 1 should be notified since 3 was is no longer
-  // running.
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe1.handle1.get(),
-                                           std::string()));
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe3.handle1.get(),
-                                           std::string()));
-  callback_helper1.RunUntilGotCallback();
-  EXPECT_TRUE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-  callback_helper1.clear_callback();
-
-  // Write to 1 and 2. Only 2 should be notified (since 1 was already notified).
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe1.handle1.get(),
-                                           std::string()));
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe2.handle1.get(),
-                                           std::string()));
-  callback_helper2.RunUntilGotCallback();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_TRUE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-}
-
-// Verifies Start() invoked a second time works.
-TEST_P(HandleWatcherTest, Restart) {
-  MessagePipe test_pipe1;
-  MessagePipe test_pipe2;
-  CallbackHelper callback_helper1;
-  CallbackHelper callback_helper2;
-  ASSERT_TRUE(test_pipe1.handle0.is_valid());
-  ASSERT_TRUE(test_pipe2.handle0.is_valid());
-
-  HandleWatcher watcher1;
-  callback_helper1.Start(&watcher1, test_pipe1.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-
-  HandleWatcher watcher2;
-  callback_helper2.Start(&watcher2, test_pipe2.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-
-  // Write to 1 and make sure it's notified.
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe1.handle1.get(),
-                                           std::string()));
-  callback_helper1.RunUntilGotCallback();
-  EXPECT_TRUE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  callback_helper1.clear_callback();
-  EXPECT_TRUE(mojo::test::DiscardMessage(test_pipe1.handle0.get()));
-
-  // Write to 2 and make sure it's notified.
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe2.handle1.get(),
-                                           std::string()));
-  callback_helper2.RunUntilGotCallback();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_TRUE(callback_helper2.got_callback());
-  callback_helper2.clear_callback();
-
-  // Listen on 1 again.
-  callback_helper1.Start(&watcher1, test_pipe1.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-
-  // Write to 1 and make sure it's notified.
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe1.handle1.get(),
-                                           std::string()));
-  callback_helper1.RunUntilGotCallback();
-  EXPECT_TRUE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-}
-
-// Verifies Start() invoked a second time on the same handle works.
-TEST_P(HandleWatcherTest, RestartOnSameHandle) {
-  MessagePipe test_pipe;
-  CallbackHelper callback_helper;
-  ASSERT_TRUE(test_pipe.handle0.is_valid());
-
-  HandleWatcher watcher;
-  callback_helper.Start(&watcher, test_pipe.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper.got_callback());
-
-  callback_helper.Start(&watcher, test_pipe.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper.got_callback());
-}
-
-// Verifies deadline is honored.
-TEST_P(HandleWatcherTest, Deadline) {
-  InstallTickClock();
-
-  MessagePipe test_pipe1;
-  MessagePipe test_pipe2;
-  MessagePipe test_pipe3;
-  CallbackHelper callback_helper1;
-  CallbackHelper callback_helper2;
-  CallbackHelper callback_helper3;
-  ASSERT_TRUE(test_pipe1.handle0.is_valid());
-  ASSERT_TRUE(test_pipe2.handle0.is_valid());
-  ASSERT_TRUE(test_pipe3.handle0.is_valid());
-
-  // Add a watcher with an infinite timeout.
-  HandleWatcher watcher1;
-  callback_helper1.Start(&watcher1, test_pipe1.handle0.get());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-
-  // Add another watcher wth a timeout of 500 microseconds.
-  HandleWatcher watcher2;
-  watcher2.Start(test_pipe2.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE, 500,
-                 callback_helper2.GetCallback());
-  RunUntilIdle();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_FALSE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-
-  // Advance the clock passed the deadline. We also have to start another
-  // watcher to wake up the background thread.
-  tick_clock_.Advance(base::TimeDelta::FromMicroseconds(501));
-
-  HandleWatcher watcher3;
-  callback_helper3.Start(&watcher3, test_pipe3.handle0.get());
-
-  callback_helper2.RunUntilGotCallback();
-  EXPECT_FALSE(callback_helper1.got_callback());
-  EXPECT_TRUE(callback_helper2.got_callback());
-  EXPECT_FALSE(callback_helper3.got_callback());
-}
-
-TEST_P(HandleWatcherTest, DeleteInCallback) {
-  MessagePipe test_pipe;
-  CallbackHelper callback_helper;
-
-  HandleWatcher* watcher = new HandleWatcher();
-  callback_helper.StartWithCallback(watcher, test_pipe.handle1.get(),
-                                    base::Bind(&DeleteWatcherAndForwardResult,
-                                               watcher,
-                                               callback_helper.GetCallback()));
-  EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe.handle0.get(),
-                                           std::string()));
-  callback_helper.RunUntilGotCallback();
-  EXPECT_TRUE(callback_helper.got_callback());
-}
-
-TEST_P(HandleWatcherTest, AbortedOnMessageLoopDestruction) {
-  bool was_signaled = false;
-  MojoResult result = MOJO_RESULT_OK;
-
-  MessagePipe pipe;
-  HandleWatcher watcher;
-  watcher.Start(pipe.handle0.get(),
-                MOJO_HANDLE_SIGNAL_READABLE,
-                MOJO_DEADLINE_INDEFINITE,
-                base::Bind(&ObserveCallback, &was_signaled, &result));
-
-  // Now, let the MessageLoop get torn down. We expect our callback to run.
-  TearDownMessageLoop();
-
-  EXPECT_TRUE(was_signaled);
-  EXPECT_EQ(MOJO_RESULT_ABORTED, result);
-}
-
-void NeverReached(MojoResult result) {
-  FAIL() << "Callback should never be invoked " << result;
-}
-
-// Called on the main thread when a thread is done. Decrements |active_count|
-// and if |active_count| is zero quits |run_loop|.
-void StressThreadDone(base::RunLoop* run_loop, int* active_count) {
-  (*active_count)--;
-  EXPECT_GE(*active_count, 0);
-  if (*active_count == 0)
-    run_loop->Quit();
-}
-
-// See description of StressTest. This is called on the background thread.
-// |count| is the number of HandleWatchers to create. |active_count| is the
-// number of outstanding threads, |task_runner| the task runner for the main
-// thread and |run_loop| the run loop that should be quit when there are no more
-// threads running. When done StressThreadDone() is invoked on the main thread.
-// |active_count| and |run_loop| should only be used on the main thread.
-void RunStressTest(int count,
-                   scoped_refptr<base::TaskRunner> task_runner,
-                   base::RunLoop* run_loop,
-                   int* active_count) {
-  struct TestData {
-    MessagePipe pipe;
-    HandleWatcher watcher;
-  };
-  ScopedVector<TestData> data_vector;
-  for (int i = 0; i < count; ++i) {
-    if (i % 20 == 0) {
-      // Every so often we wait. This results in some level of thread balancing
-      // as well as making sure HandleWatcher has time to actually start some
-      // watches.
-      MessagePipe test_pipe;
-      ASSERT_TRUE(test_pipe.handle0.is_valid());
-      CallbackHelper callback_helper;
-      HandleWatcher watcher;
-      callback_helper.Start(&watcher, test_pipe.handle0.get());
-      RunUntilIdle();
-      EXPECT_FALSE(callback_helper.got_callback());
-      EXPECT_TRUE(mojo::test::WriteTextMessage(test_pipe.handle1.get(),
-                                               std::string()));
-      base::MessageLoop::ScopedNestableTaskAllower scoper(
-          base::MessageLoop::current());
-      callback_helper.RunUntilGotCallback();
-      EXPECT_TRUE(callback_helper.got_callback());
-    } else {
-      scoped_ptr<TestData> test_data(new TestData);
-      ASSERT_TRUE(test_data->pipe.handle0.is_valid());
-      test_data->watcher.Start(test_data->pipe.handle0.get(),
-                    MOJO_HANDLE_SIGNAL_READABLE,
-                    MOJO_DEADLINE_INDEFINITE,
-                    base::Bind(&NeverReached));
-      data_vector.push_back(test_data.release());
-    }
-    if (i % 15 == 0)
-      data_vector.clear();
-  }
-  task_runner->PostTask(FROM_HERE,
-                        base::Bind(&StressThreadDone, run_loop,
-                                   active_count));
-}
-
-// This test is meant to stress HandleWatcher. It uses from various threads
-// repeatedly starting and stopping watches. It spins up kThreadCount
-// threads. Each thread creates kWatchCount watches. Every so often each thread
-// writes to a pipe and waits for the response.
-TEST(HandleWatcherCleanEnvironmentTest, StressTest) {
-#if defined(NDEBUG)
-  const int kThreadCount = 15;
-  const int kWatchCount = 400;
-#else
-  const int kThreadCount = 10;
-  const int kWatchCount = 250;
-#endif
-
-  base::ShadowingAtExitManager at_exit;
-  base::MessageLoop message_loop;
-  base::RunLoop run_loop;
-  ScopedVector<base::Thread> threads;
-  int threads_active_counter = kThreadCount;
-  // Starts the threads first and then post the task in hopes of having more
-  // threads running at once.
-  for (int i = 0; i < kThreadCount; ++i) {
-    scoped_ptr<base::Thread> thread(new base::Thread("test thread"));
-    if (i % 2) {
-      base::Thread::Options thread_options;
-      thread_options.message_pump_factory =
-          base::Bind(&MessagePumpMojo::Create);
-      thread->StartWithOptions(thread_options);
-    } else {
-      thread->Start();
-    }
-    threads.push_back(thread.release());
-  }
-  for (int i = 0; i < kThreadCount; ++i) {
-    threads[i]->task_runner()->PostTask(
-        FROM_HERE, base::Bind(&RunStressTest, kWatchCount,
-                              message_loop.task_runner(),
-                              &run_loop, &threads_active_counter));
-  }
-  run_loop.Run();
-  ASSERT_EQ(0, threads_active_counter);
-}
-
-}  // namespace test
-}  // namespace common
-}  // namespace mojo