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// 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/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 "testing/gmock/include/gmock/gmock.h"
using testing::_;
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::NextScheduledRunTime;
using TimeDomain::NextScheduledTaskQueue;
using TimeDomain::ScheduleDelayedWork;
using TimeDomain::UnregisterQueue;
using TimeDomain::UpdateWorkQueues;
using TimeDomain::RegisterAsUpdatableTaskQueue;
// TimeSource implementation:
LazyNow CreateLazyNow() override { return LazyNow(now_); }
void AsValueIntoInternal(
base::trace_event::TracedValue* state) const override {}
bool MaybeAdvanceTime() override { return false; }
const char* GetName() const override { return "Test"; }
void OnRegisterWithTaskQueueManager(
TaskQueueManagerDelegate* task_queue_manager_delegate,
base::Closure do_work_closure) override {}
MOCK_METHOD2(RequestWakeup, void(LazyNow* lazy_now, base::TimeDelta delay));
void SetNow(base::TimeTicks now) { now_ = now; }
base::TimeTicks Now() const { return now_; }
private:
base::TimeTicks now_;
DISALLOW_COPY_AND_ASSIGN(MockTimeDomain);
};
class TimeDomainTest : public testing::Test {
public:
void SetUp() final {
time_domain_ = make_scoped_ptr(CreateMockTimeDomain());
task_queue_ = make_scoped_refptr(new internal::TaskQueueImpl(
nullptr, time_domain_.get(), TaskQueue::Spec("test_queue"),
"test.category", "test.category"));
}
virtual MockTimeDomain* CreateMockTimeDomain() {
return new MockTimeDomain(nullptr);
}
scoped_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));
LazyNow lazy_now = time_domain_->CreateLazyNow();
time_domain_->ScheduleDelayedWork(task_queue_.get(),
time_domain_->Now() + delay, &lazy_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));
LazyNow lazy_now = time_domain_->CreateLazyNow();
time_domain_->ScheduleDelayedWork(task_queue_.get(),
time_domain_->Now() + delay1, &lazy_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(),
time_domain_->Now() + delay2, &lazy_now);
time_domain_->ScheduleDelayedWork(task_queue_.get(),
time_domain_->Now() + delay3, &lazy_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(),
time_domain_->Now() + delay4, &lazy_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);
LazyNow lazy_now = time_domain_->CreateLazyNow();
time_domain_->ScheduleDelayedWork(
task_queue_.get(),
time_domain_->Now() + base::TimeDelta::FromMilliseconds(10), &lazy_now);
time_domain_->ScheduleDelayedWork(
task_queue2_.get(),
time_domain_->Now() + base::TimeDelta::FromMilliseconds(100), &lazy_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());
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) {
scoped_ptr<MockTimeDomain> dummy_delegate(new MockTimeDomain(nullptr));
base::SimpleTestTickClock dummy_time_source;
scoped_refptr<cc::OrderedSimpleTaskRunner> dummy_task_runner(
new cc::OrderedSimpleTaskRunner(&dummy_time_source, false));
TaskQueueManager task_queue_manager(
TaskQueueManagerDelegateForTest::Create(
dummy_task_runner,
make_scoped_ptr(new TestTimeSource(&dummy_time_source))),
"test.scheduler", "test.scheduler", "scheduler.debug");
scoped_refptr<internal::TaskQueueImpl> dummy_queue =
task_queue_manager.NewTaskQueue(TaskQueue::Spec("test_queue"));
// Post a delayed task on |dummy_queue| and advance the queue's clock so that
// next time MoveReadyDelayedTasksToIncomingQueue is called, the task will
// get moved onto the incomming queue.
base::TimeDelta dummy_delay = base::TimeDelta::FromMilliseconds(10);
dummy_queue->PostDelayedTask(FROM_HERE, base::Closure(), dummy_delay);
dummy_time_source.Advance(dummy_delay);
// Now we can test that ScheduleDelayedWork triggers calls to
// MoveReadyDelayedTasksToIncomingQueue as expected.
base::TimeDelta delay = base::TimeDelta::FromMilliseconds(50);
base::TimeTicks delayed_runtime = time_domain_->Now() + delay;
EXPECT_CALL(*time_domain_.get(), RequestWakeup(_, delay));
LazyNow lazy_now = time_domain_->CreateLazyNow();
time_domain_->ScheduleDelayedWork(dummy_queue.get(), delayed_runtime,
&lazy_now);
time_domain_->UpdateWorkQueues(false, nullptr);
EXPECT_EQ(0UL, dummy_queue->IncomingQueueSizeForTest());
time_domain_->SetNow(delayed_runtime);
time_domain_->UpdateWorkQueues(false, nullptr);
EXPECT_EQ(1UL, dummy_queue->IncomingQueueSizeForTest());
}
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());
}
scoped_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(_, _));
LazyNow lazy_now = time_domain_->CreateLazyNow();
time_domain_->ScheduleDelayedWork(
task_queue_.get(),
time_domain_->Now() + base::TimeDelta::FromMilliseconds(10), &lazy_now);
}
} // namespace scheduler
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