Revert of scheduler: Add a base directory

components/scheduler/base/task_queue_selector_unittest.cc

Index: components/scheduler/base/task_queue_selector_unittest.cc
diff --git a/components/scheduler/base/task_queue_selector_unittest.cc b/components/scheduler/base/task_queue_selector_unittest.cc
deleted file mode 100644
index 5f78459e5bcffc07d0ab495fcc9220e1d75b0050..0000000000000000000000000000000000000000
--- a/components/scheduler/base/task_queue_selector_unittest.cc
+++ /dev/null
@@ -1,283 +0,0 @@
-// Copyright 2015 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 "components/scheduler/base/task_queue_selector.h"
-
-#include "base/bind.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/pending_task.h"
-#include "components/scheduler/base/task_queue_impl.h"
-#include "components/scheduler/base/task_queue_sets.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using testing::_;
-
-namespace scheduler {
-namespace internal {
-
-class MockObserver : public TaskQueueSelector::Observer {
- public:
-  MockObserver() {}
-  virtual ~MockObserver() {}
-
-  MOCK_METHOD1(OnTaskQueueEnabled, void(internal::TaskQueueImpl*));
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockObserver);
-};
-
-class TaskQueueSelectorTest : public testing::Test {
- public:
-  TaskQueueSelectorTest()
-      : test_closure_(base::Bind(&TaskQueueSelectorTest::TestFunction)) {}
-  ~TaskQueueSelectorTest() override {}
-
-  std::vector<TaskQueueImpl::Task> GetTasks(int count) {
-    std::vector<TaskQueueImpl::Task> tasks;
-    for (int i = 0; i < count; i++) {
-      TaskQueueImpl::Task task(FROM_HERE, test_closure_, 0, true);
-      task.set_enqueue_order(i);
-      tasks.push_back(task);
-    }
-    return tasks;
-  }
-
-  void PushTasks(const std::vector<TaskQueueImpl::Task>& tasks,
-                 const size_t queue_indices[]) {
-    std::set<size_t> changed_queue_set;
-    for (size_t i = 0; i < tasks.size(); i++) {
-      changed_queue_set.insert(queue_indices[i]);
-      task_queues_[queue_indices[i]]->PushTaskOntoWorkQueueForTest(tasks[i]);
-    }
-    for (size_t queue_index : changed_queue_set) {
-      selector_.GetTaskQueueSets()->OnPushQueue(
-          task_queues_[queue_index].get());
-    }
-  }
-
-  std::vector<size_t> PopTasks() {
-    std::vector<size_t> order;
-    TaskQueueImpl* chosen_queue;
-    while (selector_.SelectQueueToService(&chosen_queue)) {
-      size_t chosen_queue_index =
-          queue_to_index_map_.find(chosen_queue)->second;
-      order.push_back(chosen_queue_index);
-      chosen_queue->PopTaskFromWorkQueueForTest();
-      selector_.GetTaskQueueSets()->OnPopQueue(chosen_queue);
-    }
-    return order;
-  }
-
-  static void TestFunction() {}
-
- protected:
-  void SetUp() final {
-    for (size_t i = 0; i < kTaskQueueCount; i++) {
-      scoped_refptr<TaskQueueImpl> task_queue =
-          make_scoped_refptr(new TaskQueueImpl(
-              nullptr, TaskQueue::Spec("test queue"), "test", "test"));
-      selector_.AddQueue(task_queue.get());
-      task_queues_.push_back(task_queue);
-    }
-    for (size_t i = 0; i < kTaskQueueCount; i++) {
-      EXPECT_TRUE(selector_.IsQueueEnabled(task_queues_[i].get())) << i;
-      queue_to_index_map_.insert(std::make_pair(task_queues_[i].get(), i));
-    }
-  }
-
-  const size_t kTaskQueueCount = 5;
-  base::Closure test_closure_;
-  TaskQueueSelector selector_;
-  std::vector<scoped_refptr<TaskQueueImpl>> task_queues_;
-  std::map<TaskQueueImpl*, size_t> queue_to_index_map_;
-};
-
-TEST_F(TaskQueueSelectorTest, TestDefaultPriority) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(5);
-  size_t queue_order[] = {4, 3, 2, 1, 0};
-  PushTasks(tasks, queue_order);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(4, 3, 2, 1, 0));
-}
-
-TEST_F(TaskQueueSelectorTest, TestHighPriority) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(5);
-  size_t queue_order[] = {0, 1, 2, 3, 4};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[2].get(), TaskQueue::HIGH_PRIORITY);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(2, 0, 1, 3, 4));
-}
-
-TEST_F(TaskQueueSelectorTest, TestBestEffortPriority) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(5);
-  size_t queue_order[] = {0, 1, 2, 3, 4};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[0].get(),
-                             TaskQueue::BEST_EFFORT_PRIORITY);
-  selector_.SetQueuePriority(task_queues_[2].get(), TaskQueue::HIGH_PRIORITY);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(2, 1, 3, 4, 0));
-}
-
-TEST_F(TaskQueueSelectorTest, TestControlPriority) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(5);
-  size_t queue_order[] = {0, 1, 2, 3, 4};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[4].get(),
-                             TaskQueue::CONTROL_PRIORITY);
-  EXPECT_TRUE(selector_.IsQueueEnabled(task_queues_[4].get()));
-  selector_.SetQueuePriority(task_queues_[2].get(), TaskQueue::HIGH_PRIORITY);
-  EXPECT_TRUE(selector_.IsQueueEnabled(task_queues_[2].get()));
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(4, 2, 0, 1, 3));
-}
-
-TEST_F(TaskQueueSelectorTest, TestObserverWithSetQueuePriority) {
-  selector_.SetQueuePriority(task_queues_[1].get(),
-                             TaskQueue::DISABLED_PRIORITY);
-  MockObserver mock_observer;
-  selector_.SetTaskQueueSelectorObserver(&mock_observer);
-  EXPECT_CALL(mock_observer, OnTaskQueueEnabled(_)).Times(1);
-  selector_.SetQueuePriority(task_queues_[1].get(), TaskQueue::NORMAL_PRIORITY);
-}
-
-TEST_F(TaskQueueSelectorTest,
-       TestObserverWithSetQueuePriorityAndQueueAlreadyEnabed) {
-  selector_.SetQueuePriority(task_queues_[1].get(), TaskQueue::NORMAL_PRIORITY);
-  MockObserver mock_observer;
-  selector_.SetTaskQueueSelectorObserver(&mock_observer);
-  EXPECT_CALL(mock_observer, OnTaskQueueEnabled(_)).Times(0);
-  selector_.SetQueuePriority(task_queues_[1].get(), TaskQueue::NORMAL_PRIORITY);
-}
-
-TEST_F(TaskQueueSelectorTest, TestDisableEnable) {
-  MockObserver mock_observer;
-  selector_.SetTaskQueueSelectorObserver(&mock_observer);
-
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(5);
-  size_t queue_order[] = {0, 1, 2, 3, 4};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[2].get(),
-                             TaskQueue::DISABLED_PRIORITY);
-  EXPECT_FALSE(selector_.IsQueueEnabled(task_queues_[2].get()));
-  selector_.SetQueuePriority(task_queues_[4].get(),
-                             TaskQueue::DISABLED_PRIORITY);
-  EXPECT_FALSE(selector_.IsQueueEnabled(task_queues_[4].get()));
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(0, 1, 3));
-
-  EXPECT_CALL(mock_observer, OnTaskQueueEnabled(_)).Times(2);
-  selector_.SetQueuePriority(task_queues_[2].get(),
-                             TaskQueue::BEST_EFFORT_PRIORITY);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(2));
-  selector_.SetQueuePriority(task_queues_[4].get(), TaskQueue::NORMAL_PRIORITY);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(4));
-}
-
-TEST_F(TaskQueueSelectorTest, TestEmptyQueues) {
-  TaskQueueImpl* chosen_queue = nullptr;
-  EXPECT_FALSE(selector_.SelectQueueToService(&chosen_queue));
-
-  // Test only disabled queues.
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(1);
-  size_t queue_order[] = {0};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[0].get(),
-                             TaskQueue::DISABLED_PRIORITY);
-  EXPECT_FALSE(selector_.IsQueueEnabled(task_queues_[0].get()));
-  EXPECT_FALSE(selector_.SelectQueueToService(&chosen_queue));
-}
-
-TEST_F(TaskQueueSelectorTest, TestAge) {
-  std::vector<TaskQueueImpl::Task> tasks;
-  int enqueue_order[] = {10, 1, 2, 9, 4};
-  for (int i = 0; i < 5; i++) {
-    TaskQueueImpl::Task task(FROM_HERE, test_closure_, 0, true);
-    task.set_enqueue_order(enqueue_order[i]);
-    tasks.push_back(task);
-  }
-  size_t queue_order[] = {0, 1, 2, 3, 4};
-  PushTasks(tasks, queue_order);
-  EXPECT_THAT(PopTasks(), testing::ElementsAre(1, 2, 4, 3, 0));
-}
-
-TEST_F(TaskQueueSelectorTest, TestControlStarvesOthers) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(4);
-  size_t queue_order[] = {0, 1, 2, 3};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[3].get(),
-                             TaskQueue::CONTROL_PRIORITY);
-  selector_.SetQueuePriority(task_queues_[2].get(), TaskQueue::HIGH_PRIORITY);
-  selector_.SetQueuePriority(task_queues_[1].get(),
-                             TaskQueue::BEST_EFFORT_PRIORITY);
-  for (int i = 0; i < 100; i++) {
-    TaskQueueImpl* chosen_queue = nullptr;
-    EXPECT_TRUE(selector_.SelectQueueToService(&chosen_queue));
-    EXPECT_EQ(task_queues_[3].get(), chosen_queue);
-    // Don't remove task from queue to simulate all queues still being full.
-  }
-}
-
-TEST_F(TaskQueueSelectorTest, TestHighPriorityDoesNotStarveNormal) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(3);
-  size_t queue_order[] = {0, 1, 2};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[2].get(), TaskQueue::HIGH_PRIORITY);
-  selector_.SetQueuePriority(task_queues_[1].get(),
-                             TaskQueue::BEST_EFFORT_PRIORITY);
-  size_t counts[] = {0, 0, 0};
-  for (int i = 0; i < 100; i++) {
-    TaskQueueImpl* chosen_queue = nullptr;
-    EXPECT_TRUE(selector_.SelectQueueToService(&chosen_queue));
-    size_t chosen_queue_index = queue_to_index_map_.find(chosen_queue)->second;
-    counts[chosen_queue_index]++;
-    // Don't remove task from queue to simulate all queues still being full.
-  }
-  EXPECT_GT(counts[0], 0ul);        // Check high doesn't starve normal.
-  EXPECT_GT(counts[2], counts[0]);  // Check high gets more chance to run.
-  EXPECT_EQ(0ul, counts[1]);        // Check best effort is starved.
-}
-
-TEST_F(TaskQueueSelectorTest, TestBestEffortGetsStarved) {
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(2);
-  size_t queue_order[] = {0, 1};
-  PushTasks(tasks, queue_order);
-  selector_.SetQueuePriority(task_queues_[0].get(),
-                             TaskQueue::BEST_EFFORT_PRIORITY);
-  selector_.SetQueuePriority(task_queues_[1].get(), TaskQueue::NORMAL_PRIORITY);
-  TaskQueueImpl* chosen_queue = nullptr;
-  for (int i = 0; i < 100; i++) {
-    EXPECT_TRUE(selector_.SelectQueueToService(&chosen_queue));
-    EXPECT_EQ(task_queues_[1].get(), chosen_queue);
-    // Don't remove task from queue to simulate all queues still being full.
-  }
-  selector_.SetQueuePriority(task_queues_[1].get(), TaskQueue::HIGH_PRIORITY);
-  for (int i = 0; i < 100; i++) {
-    EXPECT_TRUE(selector_.SelectQueueToService(&chosen_queue));
-    EXPECT_EQ(task_queues_[1].get(), chosen_queue);
-    // Don't remove task from queue to simulate all queues still being full.
-  }
-  selector_.SetQueuePriority(task_queues_[1].get(),
-                             TaskQueue::CONTROL_PRIORITY);
-  for (int i = 0; i < 100; i++) {
-    EXPECT_TRUE(selector_.SelectQueueToService(&chosen_queue));
-    EXPECT_EQ(task_queues_[1].get(), chosen_queue);
-    // Don't remove task from queue to simulate all queues still being full.
-  }
-}
-
-TEST_F(TaskQueueSelectorTest, DisabledPriorityIsPenultimate) {
-  EXPECT_EQ(TaskQueue::QUEUE_PRIORITY_COUNT, TaskQueue::DISABLED_PRIORITY + 1);
-}
-
-TEST_F(TaskQueueSelectorTest, EnabledWorkQueuesEmpty) {
-  EXPECT_TRUE(selector_.EnabledWorkQueuesEmpty());
-  std::vector<TaskQueueImpl::Task> tasks = GetTasks(2);
-  size_t queue_order[] = {0, 1};
-  PushTasks(tasks, queue_order);
-
-  EXPECT_FALSE(selector_.EnabledWorkQueuesEmpty());
-  PopTasks();
-  EXPECT_TRUE(selector_.EnabledWorkQueuesEmpty());
-}
-
-}  // namespace internal
-}  // namespace scheduler