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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/core/congestion_control/cubic.h" | 5 #include "net/quic/core/congestion_control/cubic.h" | 
| 6 | 6 | 
|  | 7 #include <cstdint> | 
|  | 8 | 
| 7 #include "base/logging.h" | 9 #include "base/logging.h" | 
| 8 #include "net/quic/core/quic_flags.h" |  | 
| 9 #include "net/quic/test_tools/mock_clock.h" | 10 #include "net/quic/test_tools/mock_clock.h" | 
| 10 #include "testing/gtest/include/gtest/gtest.h" | 11 #include "testing/gtest/include/gtest/gtest.h" | 
| 11 | 12 | 
| 12 namespace net { | 13 namespace net { | 
| 13 namespace test { | 14 namespace test { | 
| 14 | 15 | 
| 15 const float kBeta = 0.7f;  // Default Cubic backoff factor. | 16 const float kBeta = 0.7f;  // Default Cubic backoff factor. | 
| 16 const uint32_t kNumConnections = 2; | 17 const uint32_t kNumConnections = 2; | 
| 17 const float kNConnectionBeta = (kNumConnections - 1 + kBeta) / kNumConnections; | 18 const float kNConnectionBeta = (kNumConnections - 1 + kBeta) / kNumConnections; | 
| 18 const float kNConnectionAlpha = 3 * kNumConnections * kNumConnections * | 19 const float kNConnectionAlpha = 3 * kNumConnections * kNumConnections * | 
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| 143   for (int i = 0; i < 40; ++i) { | 144   for (int i = 0; i < 40; ++i) { | 
| 144     clock_.AdvanceTime(hundred_ms_); | 145     clock_.AdvanceTime(hundred_ms_); | 
| 145     current_cwnd = cubic_.CongestionWindowAfterAck(current_cwnd, rtt_min); | 146     current_cwnd = cubic_.CongestionWindowAfterAck(current_cwnd, rtt_min); | 
| 146   } | 147   } | 
| 147   expected_cwnd = 399; | 148   expected_cwnd = 399; | 
| 148   EXPECT_EQ(expected_cwnd, current_cwnd); | 149   EXPECT_EQ(expected_cwnd, current_cwnd); | 
| 149 } | 150 } | 
| 150 | 151 | 
| 151 }  // namespace test | 152 }  // namespace test | 
| 152 }  // namespace net | 153 }  // namespace net | 
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