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// Copyright (c) 2012 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 "net/quic/quic_chromium_alarm_factory.h"
#include "net/quic/test_task_runner.h"
#include "net/third_party/quiche/src/quic/test_tools/mock_clock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace test {
namespace {
class TestDelegate : public quic::QuicAlarm::Delegate {
public:
TestDelegate() : fired_(false) {}
void OnAlarm() override { fired_ = true; }
bool fired() const { return fired_; }
void Clear() { fired_ = false; }
private:
bool fired_;
};
class QuicChromiumAlarmFactoryTest : public ::testing::Test {
protected:
QuicChromiumAlarmFactoryTest()
: runner_(new TestTaskRunner(&clock_)),
alarm_factory_(runner_.get(), &clock_) {}
scoped_refptr<TestTaskRunner> runner_;
QuicChromiumAlarmFactory alarm_factory_;
quic::MockClock clock_;
};
TEST_F(QuicChromiumAlarmFactoryTest, CreateAlarm) {
TestDelegate* delegate = new TestDelegate();
std::unique_ptr<quic::QuicAlarm> alarm(alarm_factory_.CreateAlarm(delegate));
// Set the deadline 1µs in the future.
constexpr quic::QuicTime::Delta kDelta =
quic::QuicTime::Delta::FromMicroseconds(1);
quic::QuicTime deadline = clock_.Now() + kDelta;
alarm->Set(deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), deadline);
EXPECT_FALSE(delegate->fired());
runner_->FastForwardBy(kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_TRUE(delegate->fired());
}
TEST_F(QuicChromiumAlarmFactoryTest, CreateAlarmAndCancel) {
TestDelegate* delegate = new TestDelegate();
std::unique_ptr<quic::QuicAlarm> alarm(alarm_factory_.CreateAlarm(delegate));
constexpr quic::QuicTime::Delta kDelta =
quic::QuicTime::Delta::FromMicroseconds(1);
quic::QuicTime deadline = clock_.Now() + kDelta;
alarm->Set(deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), deadline);
EXPECT_FALSE(delegate->fired());
alarm->Cancel();
EXPECT_FALSE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
// Advancing time should not cause the alarm to fire.
runner_->FastForwardBy(kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
}
TEST_F(QuicChromiumAlarmFactoryTest, CreateAlarmAndReset) {
TestDelegate* delegate = new TestDelegate();
std::unique_ptr<quic::QuicAlarm> alarm(alarm_factory_.CreateAlarm(delegate));
// Set the deadline 1µs in the future.
constexpr quic::QuicTime::Delta kDelta =
quic::QuicTime::Delta::FromMicroseconds(1);
quic::QuicTime deadline = clock_.Now() + kDelta;
alarm->Set(deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), deadline);
EXPECT_FALSE(delegate->fired());
alarm->Cancel();
EXPECT_FALSE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
// Set the timer with a longer delta.
constexpr quic::QuicTime::Delta kNewDelta =
quic::QuicTime::Delta::FromMicroseconds(3);
quic::QuicTime new_deadline = clock_.Now() + kNewDelta;
alarm->Set(new_deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), new_deadline);
EXPECT_FALSE(delegate->fired());
// Advancing time for the first delay should not cause the alarm to fire.
runner_->FastForwardBy(kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kDelta, clock_.Now());
EXPECT_TRUE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
// Advancing time for the remaining of the new delay will fire the alarm.
runner_->FastForwardBy(kNewDelta - kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kNewDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_TRUE(delegate->fired());
}
TEST_F(QuicChromiumAlarmFactoryTest, CreateAlarmAndResetEarlier) {
TestDelegate* delegate = new TestDelegate();
std::unique_ptr<quic::QuicAlarm> alarm(alarm_factory_.CreateAlarm(delegate));
// Set the deadline 3µs in the future.
constexpr quic::QuicTime::Delta kDelta =
quic::QuicTime::Delta::FromMicroseconds(3);
quic::QuicTime deadline = clock_.Now() + kDelta;
alarm->Set(deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), deadline);
EXPECT_FALSE(delegate->fired());
alarm->Cancel();
EXPECT_FALSE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
// Set the timer with a shorter delta.
constexpr quic::QuicTime::Delta kNewDelta =
quic::QuicTime::Delta::FromMicroseconds(1);
quic::QuicTime new_deadline = clock_.Now() + kNewDelta;
alarm->Set(new_deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), new_deadline);
EXPECT_FALSE(delegate->fired());
// Advancing time for the shorter delay will fire the alarm.
runner_->FastForwardBy(kNewDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kNewDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_TRUE(delegate->fired());
delegate->Clear();
EXPECT_FALSE(delegate->fired());
// Advancing time for the remaining of the new original delay should not cause
// the alarm to fire again.
runner_->FastForwardBy(kDelta - kNewDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
}
TEST_F(QuicChromiumAlarmFactoryTest, CreateAlarmAndUpdate) {
TestDelegate* delegate = new TestDelegate();
std::unique_ptr<quic::QuicAlarm> alarm(alarm_factory_.CreateAlarm(delegate));
// Set the deadline 1µs in the future.
constexpr quic::QuicTime::Delta kDelta =
quic::QuicTime::Delta::FromMicroseconds(1);
quic::QuicTime deadline = clock_.Now() + kDelta;
alarm->Set(deadline);
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), deadline);
EXPECT_FALSE(delegate->fired());
// Update the deadline.
constexpr quic::QuicTime::Delta kNewDelta =
quic::QuicTime::Delta::FromMicroseconds(3);
quic::QuicTime new_deadline = clock_.Now() + kNewDelta;
alarm->Update(new_deadline, quic::QuicTime::Delta::FromMicroseconds(1));
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), new_deadline);
EXPECT_FALSE(delegate->fired());
// Update the alarm with another delta that is not further away from the
// current deadline than the granularity. The deadline should not change.
alarm->Update(new_deadline + quic::QuicTime::Delta::FromMicroseconds(1),
quic::QuicTime::Delta::FromMicroseconds(2));
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), new_deadline);
EXPECT_FALSE(delegate->fired());
// Advancing time for the first delay should not cause the alarm to fire.
runner_->FastForwardBy(kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kDelta, clock_.Now());
EXPECT_TRUE(alarm->IsSet());
EXPECT_FALSE(delegate->fired());
// Advancing time for the remaining of the new delay will fire the alarm.
runner_->FastForwardBy(kNewDelta - kDelta);
EXPECT_EQ(quic::QuicTime::Zero() + kNewDelta, clock_.Now());
EXPECT_FALSE(alarm->IsSet());
EXPECT_TRUE(delegate->fired());
// Set the alarm via an update call.
new_deadline = clock_.Now() + quic::QuicTime::Delta::FromMicroseconds(5);
alarm->Update(new_deadline, quic::QuicTime::Delta::FromMicroseconds(1));
EXPECT_TRUE(alarm->IsSet());
EXPECT_EQ(alarm->deadline(), new_deadline);
// Update it with an uninitialized time and ensure it's cancelled.
alarm->Update(quic::QuicTime::Zero(),
quic::QuicTime::Delta::FromMicroseconds(1));
EXPECT_FALSE(alarm->IsSet());
}
} // namespace
} // namespace test
} // namespace net
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