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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 "net/quic/congestion_control/cubic.h" | 5 #include "net/quic/congestion_control/cubic.h" |
| 6 | 6 |
| 7 #include "base/basictypes.h" | |
| 8 #include "base/logging.h" | 7 #include "base/logging.h" |
| 9 #include "net/quic/quic_connection_stats.h" | 8 #include "net/quic/quic_connection_stats.h" |
| 10 #include "net/quic/test_tools/mock_clock.h" | 9 #include "net/quic/test_tools/mock_clock.h" |
| 11 #include "testing/gtest/include/gtest/gtest.h" | 10 #include "testing/gtest/include/gtest/gtest.h" |
| 12 | 11 |
| 13 namespace net { | 12 namespace net { |
| 14 namespace test { | 13 namespace test { |
| 15 | 14 |
| 16 const float kBeta = 0.7f; // Default Cubic backoff factor. | 15 const float kBeta = 0.7f; // Default Cubic backoff factor. |
| 17 const uint32 kNumConnections = 2; | 16 const uint32_t kNumConnections = 2; |
| 18 const float kNConnectionBeta = (kNumConnections - 1 + kBeta) / kNumConnections; | 17 const float kNConnectionBeta = (kNumConnections - 1 + kBeta) / kNumConnections; |
| 19 const float kNConnectionAlpha = 3 * kNumConnections * kNumConnections * | 18 const float kNConnectionAlpha = 3 * kNumConnections * kNumConnections * |
| 20 (1 - kNConnectionBeta) / (1 + kNConnectionBeta); | 19 (1 - kNConnectionBeta) / (1 + kNConnectionBeta); |
| 21 | 20 |
| 22 class CubicTest : public ::testing::Test { | 21 class CubicTest : public ::testing::Test { |
| 23 protected: | 22 protected: |
| 24 CubicTest() | 23 CubicTest() |
| 25 : one_ms_(QuicTime::Delta::FromMilliseconds(1)), | 24 : one_ms_(QuicTime::Delta::FromMilliseconds(1)), |
| 26 hundred_ms_(QuicTime::Delta::FromMilliseconds(100)), | 25 hundred_ms_(QuicTime::Delta::FromMilliseconds(100)), |
| 27 cubic_(&clock_) {} | 26 cubic_(&clock_) {} |
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| 137 for (int i = 0; i < 40; ++i) { | 136 for (int i = 0; i < 40; ++i) { |
| 138 clock_.AdvanceTime(hundred_ms_); | 137 clock_.AdvanceTime(hundred_ms_); |
| 139 current_cwnd = cubic_.CongestionWindowAfterAck(current_cwnd, rtt_min); | 138 current_cwnd = cubic_.CongestionWindowAfterAck(current_cwnd, rtt_min); |
| 140 } | 139 } |
| 141 expected_cwnd = 422; | 140 expected_cwnd = 422; |
| 142 EXPECT_EQ(expected_cwnd, current_cwnd); | 141 EXPECT_EQ(expected_cwnd, current_cwnd); |
| 143 } | 142 } |
| 144 | 143 |
| 145 } // namespace test | 144 } // namespace test |
| 146 } // namespace net | 145 } // namespace net |
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