scheduler: Move the Blink scheduler into Blink

components/scheduler/base/time_domain_unittest.cc

-// 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/time_domain.h"
-
-#include "base/macros.h"
-#include "base/memory/ptr_util.h"
-#include "base/test/simple_test_tick_clock.h"
-#include "cc/test/ordered_simple_task_runner.h"
-#include "components/scheduler/base/task_queue_impl.h"
-#include "components/scheduler/base/task_queue_manager.h"
-#include "components/scheduler/base/task_queue_manager_delegate_for_test.h"
-#include "components/scheduler/base/test_time_source.h"
-#include "components/scheduler/base/work_queue.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-using testing::_;
-using testing::AnyNumber;
-using testing::Mock;
-
-namespace scheduler {
-
-class MockTimeDomain : public TimeDomain {
- public:
-  explicit MockTimeDomain(TimeDomain::Observer* observer)
-      : TimeDomain(observer),
-        now_(base::TimeTicks() + base::TimeDelta::FromSeconds(1)) {}
-
-  ~MockTimeDomain() override {}
-
-  using TimeDomain::ClearExpiredWakeups;
-  using TimeDomain::NextScheduledRunTime;
-  using TimeDomain::NextScheduledTaskQueue;
-  using TimeDomain::ScheduleDelayedWork;
-  using TimeDomain::UnregisterQueue;
-  using TimeDomain::UpdateWorkQueues;
-  using TimeDomain::RegisterAsUpdatableTaskQueue;
-
-  // TimeSource implementation:
-  LazyNow CreateLazyNow() const override { return LazyNow(now_); }
-  base::TimeTicks Now() const override { return now_; }
-
-  base::TimeTicks ComputeDelayedRunTime(base::TimeTicks time_domain_now,
-                                        base::TimeDelta delay) const override {
-    return time_domain_now + delay;
-  }
-
-  void AsValueIntoInternal(
-      base::trace_event::TracedValue* state) const override {}
-
-  bool MaybeAdvanceTime() override { return false; }
-  const char* GetName() const override { return "Test"; }
-  void OnRegisterWithTaskQueueManager(
-      TaskQueueManager* task_queue_manager) override {}
-
-  MOCK_METHOD2(RequestWakeup, void(base::TimeTicks now, base::TimeDelta delay));
-
-  void SetNow(base::TimeTicks now) { now_ = now; }
-
-
- private:
-  base::TimeTicks now_;
-
-  DISALLOW_COPY_AND_ASSIGN(MockTimeDomain);
-};
-
-class TimeDomainTest : public testing::Test {
- public:
-  void SetUp() final {
-    time_domain_ = base::WrapUnique(CreateMockTimeDomain());
-    task_queue_ = make_scoped_refptr(new internal::TaskQueueImpl(
-        nullptr, time_domain_.get(), TaskQueue::Spec("test_queue"),
-        "test.category", "test.category"));
-  }
-
-  void TearDown() final {
-    if (task_queue_)
-      task_queue_->UnregisterTaskQueue();
-  }
-
-  virtual MockTimeDomain* CreateMockTimeDomain() {
-    return new MockTimeDomain(nullptr);
-  }
-
-  std::unique_ptr<MockTimeDomain> time_domain_;
-  scoped_refptr<internal::TaskQueueImpl> task_queue_;
-};
-
-TEST_F(TimeDomainTest, ScheduleDelayedWork) {
-  base::TimeDelta delay = base::TimeDelta::FromMilliseconds(10);
-  base::TimeTicks delayed_runtime = time_domain_->Now() + delay;
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, delay));
-  base::TimeTicks now = time_domain_->Now();
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), now + delay, now);
-
-  base::TimeTicks next_scheduled_runtime;
-  EXPECT_TRUE(time_domain_->NextScheduledRunTime(&next_scheduled_runtime));
-  EXPECT_EQ(delayed_runtime, next_scheduled_runtime);
-
-  TaskQueue* next_task_queue;
-  EXPECT_TRUE(time_domain_->NextScheduledTaskQueue(&next_task_queue));
-  EXPECT_EQ(task_queue_.get(), next_task_queue);
-}
-
-TEST_F(TimeDomainTest, RequestWakeup_OnlyCalledForEarlierTasks) {
-  base::TimeDelta delay1 = base::TimeDelta::FromMilliseconds(10);
-  base::TimeDelta delay2 = base::TimeDelta::FromMilliseconds(20);
-  base::TimeDelta delay3 = base::TimeDelta::FromMilliseconds(30);
-  base::TimeDelta delay4 = base::TimeDelta::FromMilliseconds(1);
-
-  // RequestWakeup should always be called if there are no other wakeups.
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, delay1));
-  base::TimeTicks now = time_domain_->Now();
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), now + delay1, now);
-
-  Mock::VerifyAndClearExpectations(time_domain_.get());
-
-  // RequestWakeup should not be called when scheduling later tasks.
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, _)).Times(0);
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), now + delay2, now);
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), now + delay3, now);
-
-  // RequestWakeup should be called when scheduling earlier tasks.
-  Mock::VerifyAndClearExpectations(time_domain_.get());
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, delay4));
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), now + delay4, now);
-}
-
-TEST_F(TimeDomainTest, UnregisterQueue) {
-  scoped_refptr<internal::TaskQueueImpl> task_queue2_ =
-      make_scoped_refptr(new internal::TaskQueueImpl(
-          nullptr, time_domain_.get(), TaskQueue::Spec("test_queue2"),
-          "test.category", "test.category"));
-
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, _)).Times(1);
-  base::TimeTicks now = time_domain_->Now();
-  time_domain_->ScheduleDelayedWork(
-      task_queue_.get(), now + base::TimeDelta::FromMilliseconds(10), now);
-  time_domain_->ScheduleDelayedWork(
-      task_queue2_.get(), now + base::TimeDelta::FromMilliseconds(100), now);
-
-  TaskQueue* next_task_queue;
-  EXPECT_TRUE(time_domain_->NextScheduledTaskQueue(&next_task_queue));
-  EXPECT_EQ(task_queue_.get(), next_task_queue);
-
-  time_domain_->UnregisterQueue(task_queue_.get());
-  task_queue_ = scoped_refptr<internal::TaskQueueImpl>();
-  EXPECT_TRUE(time_domain_->NextScheduledTaskQueue(&next_task_queue));
-  EXPECT_EQ(task_queue2_.get(), next_task_queue);
-
-  time_domain_->UnregisterQueue(task_queue2_.get());
-  EXPECT_FALSE(time_domain_->NextScheduledTaskQueue(&next_task_queue));
-}
-
-TEST_F(TimeDomainTest, UpdateWorkQueues) {
-  base::TimeDelta delay = base::TimeDelta::FromMilliseconds(50);
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, delay));
-  base::TimeTicks now = time_domain_->Now();
-  base::TimeTicks delayed_runtime = now + delay;
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), delayed_runtime, now);
-
-  base::TimeTicks next_run_time;
-  ASSERT_TRUE(time_domain_->NextScheduledRunTime(&next_run_time));
-  EXPECT_EQ(delayed_runtime, next_run_time);
-
-  LazyNow lazy_now = time_domain_->CreateLazyNow();
-  time_domain_->UpdateWorkQueues(false, nullptr, lazy_now);
-  ASSERT_TRUE(time_domain_->NextScheduledRunTime(&next_run_time));
-  EXPECT_EQ(delayed_runtime, next_run_time);
-
-  time_domain_->SetNow(delayed_runtime);
-  lazy_now = time_domain_->CreateLazyNow();
-  time_domain_->UpdateWorkQueues(false, nullptr, lazy_now);
-  ASSERT_FALSE(time_domain_->NextScheduledRunTime(&next_run_time));
-}
-
-TEST_F(TimeDomainTest, ClearExpiredWakeups) {
-  base::TimeTicks now = time_domain_->Now();
-  base::TimeDelta delay1 = base::TimeDelta::FromMilliseconds(10);
-  base::TimeDelta delay2 = base::TimeDelta::FromMilliseconds(20);
-  base::TimeTicks run_time1 = now + delay1;
-  base::TimeTicks run_time2 = now + delay2;
-
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, _)).Times(AnyNumber());
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), run_time1, now);
-  time_domain_->ScheduleDelayedWork(task_queue_.get(), run_time2, now);
-
-  base::TimeTicks next_run_time;
-  ASSERT_TRUE(time_domain_->NextScheduledRunTime(&next_run_time));
-  EXPECT_EQ(run_time1, next_run_time);
-
-  time_domain_->SetNow(run_time1);
-  time_domain_->ClearExpiredWakeups();
-
-  ASSERT_TRUE(time_domain_->NextScheduledRunTime(&next_run_time));
-  EXPECT_EQ(run_time2, next_run_time);
-
-  time_domain_->SetNow(run_time2);
-  time_domain_->ClearExpiredWakeups();
-  ASSERT_FALSE(time_domain_->NextScheduledRunTime(&next_run_time));
-}
-
-namespace {
-class MockObserver : public TimeDomain::Observer {
- public:
-  ~MockObserver() override {}
-
-  MOCK_METHOD0(OnTimeDomainHasImmediateWork, void());
-  MOCK_METHOD0(OnTimeDomainHasDelayedWork, void());
-};
-}  // namespace
-
-class TimeDomainWithObserverTest : public TimeDomainTest {
- public:
-  MockTimeDomain* CreateMockTimeDomain() override {
-    observer_.reset(new MockObserver());
-    return new MockTimeDomain(observer_.get());
-  }
-
-  std::unique_ptr<MockObserver> observer_;
-};
-
-TEST_F(TimeDomainWithObserverTest, OnTimeDomainHasImmediateWork) {
-  EXPECT_CALL(*observer_, OnTimeDomainHasImmediateWork());
-  time_domain_->RegisterAsUpdatableTaskQueue(task_queue_.get());
-}
-
-TEST_F(TimeDomainWithObserverTest, OnTimeDomainHasDelayedWork) {
-  EXPECT_CALL(*observer_, OnTimeDomainHasDelayedWork());
-  EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, _));
-  base::TimeTicks now = time_domain_->Now();
-  time_domain_->ScheduleDelayedWork(
-      task_queue_.get(), now + base::TimeDelta::FromMilliseconds(10), now);
-}
-
-}  // namespace scheduler