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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/logging.h" | 5 #include "base/logging.h" |
| 6 #include "base/memory/scoped_ptr.h" | 6 #include "base/memory/scoped_ptr.h" |
| 7 #include "net/quic/congestion_control/paced_sender.h" | 7 #include "net/quic/congestion_control/paced_sender.h" |
| 8 #include "net/quic/quic_protocol.h" | 8 #include "net/quic/quic_protocol.h" |
| 9 #include "net/quic/test_tools/mock_clock.h" | 9 #include "net/quic/test_tools/mock_clock.h" |
| 10 #include "testing/gmock/include/gmock/gmock.h" | 10 #include "testing/gmock/include/gmock/gmock.h" |
| 11 #include "testing/gtest/include/gtest/gtest.h" | 11 #include "testing/gtest/include/gtest/gtest.h" |
| 12 | 12 |
| 13 namespace net { | 13 namespace net { |
| 14 namespace test { | 14 namespace test { |
| 15 | 15 |
| 16 const int kHundredKBytesPerS = 100; | 16 const int kHundredKBytesPerS = 100; |
| 17 | 17 |
| 18 class PacedSenderTest : public ::testing::Test { | 18 class PacedSenderTest : public ::testing::Test { |
| 19 protected: | 19 protected: |
| 20 PacedSenderTest() | 20 PacedSenderTest() |
| 21 : zero_time_(QuicTime::Delta::Zero()), | 21 : zero_time_(QuicTime::Delta::Zero()), |
| 22 paced_sender_(new PacedSender( | 22 paced_sender_(new PacedSender( |
| 23 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS), | 23 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS), |
| 24 kDefaultMaxPacketSize)) { | 24 kDefaultMaxPacketSize)) {} |
| 25 } | |
| 26 | 25 |
| 27 const QuicTime::Delta zero_time_; | 26 const QuicTime::Delta zero_time_; |
| 28 MockClock clock_; | 27 MockClock clock_; |
| 29 scoped_ptr<PacedSender> paced_sender_; | 28 scoped_ptr<PacedSender> paced_sender_; |
| 30 }; | 29 }; |
| 31 | 30 |
| 32 TEST_F(PacedSenderTest, Basic) { | 31 TEST_F(PacedSenderTest, Basic) { |
| 33 paced_sender_->UpdateBandwidthEstimate(clock_.Now(), | 32 paced_sender_->UpdateBandwidthEstimate( |
| 33 clock_.Now(), |
| 34 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS * 10)); | 34 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS * 10)); |
| 35 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 35 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 36 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 36 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 37 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 37 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 38 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 38 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 39 EXPECT_EQ(static_cast<int64>(kDefaultMaxPacketSize * 2), | 39 EXPECT_EQ( |
| 40 paced_sender_->TimeUntilSend( | 40 static_cast<int64>(kDefaultMaxPacketSize * 2), |
| 41 clock_.Now(), zero_time_).ToMicroseconds()); | 41 paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).ToMicroseconds()); |
| 42 clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(24)); | 42 clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(24)); |
| 43 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 43 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 44 } | 44 } |
| 45 | 45 |
| 46 TEST_F(PacedSenderTest, LowRate) { | 46 TEST_F(PacedSenderTest, LowRate) { |
| 47 paced_sender_->UpdateBandwidthEstimate(clock_.Now(), | 47 paced_sender_->UpdateBandwidthEstimate( |
| 48 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS)); | 48 clock_.Now(), QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS)); |
| 49 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 49 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 50 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 50 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 51 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 51 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 52 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 52 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 53 EXPECT_EQ(static_cast<int64>(kDefaultMaxPacketSize * 20), | 53 EXPECT_EQ( |
| 54 paced_sender_->TimeUntilSend( | 54 static_cast<int64>(kDefaultMaxPacketSize * 20), |
| 55 clock_.Now(), zero_time_).ToMicroseconds()); | 55 paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).ToMicroseconds()); |
| 56 clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(24)); | 56 clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(24)); |
| 57 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 57 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 58 } | 58 } |
| 59 | 59 |
| 60 TEST_F(PacedSenderTest, HighRate) { | 60 TEST_F(PacedSenderTest, HighRate) { |
| 61 QuicBandwidth bandwidth_estimate = QuicBandwidth::FromKBytesPerSecond( | 61 QuicBandwidth bandwidth_estimate = |
| 62 kHundredKBytesPerS * 100); | 62 QuicBandwidth::FromKBytesPerSecond(kHundredKBytesPerS * 100); |
| 63 paced_sender_->UpdateBandwidthEstimate(clock_.Now(), bandwidth_estimate); | 63 paced_sender_->UpdateBandwidthEstimate(clock_.Now(), bandwidth_estimate); |
| 64 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 64 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 65 for (int i = 0; i < 16; ++i) { | 65 for (int i = 0; i < 16; ++i) { |
| 66 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 66 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 67 EXPECT_TRUE(paced_sender_->TimeUntilSend( | 67 EXPECT_TRUE( |
| 68 clock_.Now(), zero_time_).IsZero()); | 68 paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 69 } | 69 } |
| 70 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); | 70 paced_sender_->OnPacketSent(clock_.Now(), kDefaultMaxPacketSize); |
| 71 EXPECT_EQ(2040, paced_sender_->TimeUntilSend( | 71 EXPECT_EQ( |
| 72 clock_.Now(), zero_time_).ToMicroseconds()); | 72 2040, |
| 73 paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).ToMicroseconds()); |
| 73 clock_.AdvanceTime(QuicTime::Delta::FromMicroseconds(20400)); | 74 clock_.AdvanceTime(QuicTime::Delta::FromMicroseconds(20400)); |
| 74 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); | 75 EXPECT_TRUE(paced_sender_->TimeUntilSend(clock_.Now(), zero_time_).IsZero()); |
| 75 } | 76 } |
| 76 | 77 |
| 77 } // namespace test | 78 } // namespace test |
| 78 } // namespace net | 79 } // namespace net |
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