Index: net/quic/congestion_control/cubic_bytes_test.cc |
diff --git a/net/quic/congestion_control/cubic_bytes_test.cc b/net/quic/congestion_control/cubic_bytes_test.cc |
deleted file mode 100644 |
index 02504b3f98e3b7a85ed9d6a16a528ceca94a2a0d..0000000000000000000000000000000000000000 |
--- a/net/quic/congestion_control/cubic_bytes_test.cc |
+++ /dev/null |
@@ -1,120 +0,0 @@ |
-// Copyright (c) 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 "net/quic/congestion_control/cubic_bytes.h" |
- |
-#include "base/logging.h" |
-#include "net/quic/test_tools/mock_clock.h" |
-#include "testing/gtest/include/gtest/gtest.h" |
- |
-namespace net { |
-namespace test { |
- |
-const float kBeta = 0.7f; // Default Cubic backoff factor. |
-const uint32_t kNumConnections = 2; |
-const float kNConnectionBeta = (kNumConnections - 1 + kBeta) / kNumConnections; |
-const float kNConnectionAlpha = 3 * kNumConnections * kNumConnections * |
- (1 - kNConnectionBeta) / (1 + kNConnectionBeta); |
- |
-class CubicBytesTest : public ::testing::Test { |
- protected: |
- CubicBytesTest() |
- : one_ms_(QuicTime::Delta::FromMilliseconds(1)), |
- hundred_ms_(QuicTime::Delta::FromMilliseconds(100)), |
- cubic_(&clock_) {} |
- const QuicTime::Delta one_ms_; |
- const QuicTime::Delta hundred_ms_; |
- MockClock clock_; |
- CubicBytes cubic_; |
-}; |
- |
-TEST_F(CubicBytesTest, AboveOrigin) { |
- // Convex growth. |
- const QuicTime::Delta rtt_min = hundred_ms_; |
- QuicByteCount current_cwnd = 10 * kDefaultTCPMSS; |
- QuicByteCount expected_cwnd = current_cwnd + kDefaultTCPMSS; |
- // Initialize the state. |
- clock_.AdvanceTime(one_ms_); |
- EXPECT_EQ(expected_cwnd, cubic_.CongestionWindowAfterAck( |
- kDefaultTCPMSS, current_cwnd, rtt_min)); |
- current_cwnd = expected_cwnd; |
- // Normal TCP phase. |
- for (int i = 0; i < 48; ++i) { |
- for (QuicPacketCount n = 1; |
- n < current_cwnd / kDefaultTCPMSS / kNConnectionAlpha; ++n) { |
- // Call once per ACK. |
- EXPECT_NEAR(current_cwnd, cubic_.CongestionWindowAfterAck( |
- kDefaultTCPMSS, current_cwnd, rtt_min), |
- kDefaultTCPMSS); |
- } |
- clock_.AdvanceTime(hundred_ms_); |
- current_cwnd = |
- cubic_.CongestionWindowAfterAck(kDefaultTCPMSS, current_cwnd, rtt_min); |
- EXPECT_NEAR(expected_cwnd, current_cwnd, kDefaultTCPMSS); |
- expected_cwnd += kDefaultTCPMSS; |
- } |
- // Cubic phase. |
- for (int i = 0; i < 52; ++i) { |
- for (QuicPacketCount n = 1; n < current_cwnd / kDefaultTCPMSS; ++n) { |
- // Call once per ACK. |
- EXPECT_NEAR(current_cwnd, cubic_.CongestionWindowAfterAck( |
- kDefaultTCPMSS, current_cwnd, rtt_min), |
- kDefaultTCPMSS); |
- } |
- clock_.AdvanceTime(hundred_ms_); |
- current_cwnd = |
- cubic_.CongestionWindowAfterAck(kDefaultTCPMSS, current_cwnd, rtt_min); |
- } |
- // Total time elapsed so far; add min_rtt (0.1s) here as well. |
- float elapsed_time_s = 10.0f + 0.1f; |
- // |expected_cwnd| is initial value of cwnd + K * t^3, where K = 0.4. |
- expected_cwnd = |
- 11 + (elapsed_time_s * elapsed_time_s * elapsed_time_s * 410) / 1024; |
- EXPECT_EQ(expected_cwnd, current_cwnd / kDefaultTCPMSS); |
-} |
- |
-TEST_F(CubicBytesTest, LossEvents) { |
- const QuicTime::Delta rtt_min = hundred_ms_; |
- QuicByteCount current_cwnd = 422 * kDefaultTCPMSS; |
- QuicPacketCount expected_cwnd = current_cwnd + kDefaultTCPMSS; |
- // Initialize the state. |
- clock_.AdvanceTime(one_ms_); |
- EXPECT_EQ(expected_cwnd, cubic_.CongestionWindowAfterAck( |
- kDefaultTCPMSS, current_cwnd, rtt_min)); |
- expected_cwnd = static_cast<QuicPacketCount>(current_cwnd * kNConnectionBeta); |
- EXPECT_EQ(expected_cwnd, |
- cubic_.CongestionWindowAfterPacketLoss(current_cwnd)); |
- expected_cwnd = static_cast<QuicPacketCount>(current_cwnd * kNConnectionBeta); |
- EXPECT_EQ(expected_cwnd, |
- cubic_.CongestionWindowAfterPacketLoss(current_cwnd)); |
-} |
- |
-TEST_F(CubicBytesTest, BelowOrigin) { |
- // Concave growth. |
- const QuicTime::Delta rtt_min = hundred_ms_; |
- QuicByteCount current_cwnd = 422 * kDefaultTCPMSS; |
- QuicPacketCount expected_cwnd = current_cwnd + kDefaultTCPMSS; |
- // Initialize the state. |
- clock_.AdvanceTime(one_ms_); |
- EXPECT_EQ(expected_cwnd, cubic_.CongestionWindowAfterAck( |
- kDefaultTCPMSS, current_cwnd, rtt_min)); |
- expected_cwnd = static_cast<QuicPacketCount>(current_cwnd * kNConnectionBeta); |
- EXPECT_EQ(expected_cwnd, |
- cubic_.CongestionWindowAfterPacketLoss(current_cwnd)); |
- current_cwnd = expected_cwnd; |
- // First update after loss to initialize the epoch. |
- current_cwnd = |
- cubic_.CongestionWindowAfterAck(kDefaultTCPMSS, current_cwnd, rtt_min); |
- // Cubic phase. |
- for (int i = 0; i < 40; ++i) { |
- clock_.AdvanceTime(hundred_ms_); |
- current_cwnd = |
- cubic_.CongestionWindowAfterAck(kDefaultTCPMSS, current_cwnd, rtt_min); |
- } |
- expected_cwnd = 422 * kDefaultTCPMSS; |
- EXPECT_EQ(expected_cwnd, current_cwnd); |
-} |
- |
-} // namespace test |
-} // namespace net |