Land Recent QUIC changes.

net/quic/congestion_control/tcp_cubic_sender_test.cc

 // 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 "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/quic/congestion_control/tcp_cubic_sender.h"
 #include "net/quic/congestion_control/tcp_receiver.h"
 #include "net/quic/test_tools/mock_clock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 11 matching lines @@
   }
   using TcpCubicSender::AvailableCongestionWindow;
   using TcpCubicSender::CongestionWindow;
 };
 
 class TcpCubicSenderTest : public ::testing::Test {
  protected:
   TcpCubicSenderTest()
      : rtt_(QuicTime::Delta::FromMilliseconds(60)),
        one_ms_(QuicTime::Delta::FromMilliseconds(1)),
-       fake_bandwidth_(QuicBandwidth::Zero()),
        sender_(new TcpCubicSenderPeer(&clock_, true)),
        receiver_(new TcpReceiver()),
        sequence_number_(1),
        acked_sequence_number_(0) {
   }
   void SendAvailableCongestionWindow() {
     QuicByteCount bytes_to_send = sender_->AvailableCongestionWindow();
     while (bytes_to_send > 0) {
       QuicByteCount bytes_in_packet = std::min(kMaxPacketSize, bytes_to_send);
       sender_->SentPacket(clock_.Now(), sequence_number_++, bytes_in_packet,
                           NOT_RETRANSMISSION);
       bytes_to_send -= bytes_in_packet;
       if (bytes_to_send > 0) {
         EXPECT_TRUE(sender_->TimeUntilSend(clock_.Now(), NOT_RETRANSMISSION,
                                            HAS_RETRANSMITTABLE_DATA).IsZero());
       }
     }
   }
   // Normal is that TCP acks every other segment.
   void AckNPackets(int n) {
     for (int i = 0; i < n; ++i) {
       acked_sequence_number_++;
       sender_->OnIncomingAck(acked_sequence_number_, kMaxPacketSize, rtt_);
     }
     clock_.AdvanceTime(one_ms_);  // 1 millisecond.
   }
 
   const QuicTime::Delta rtt_;
   const QuicTime::Delta one_ms_;
-  const QuicBandwidth fake_bandwidth_;
   MockClock clock_;
   SendAlgorithmInterface::SentPacketsMap not_used_;
   scoped_ptr<TcpCubicSenderPeer> sender_;
   scoped_ptr<TcpReceiver> receiver_;
   QuicPacketSequenceNumber sequence_number_;
   QuicPacketSequenceNumber acked_sequence_number_;
 };
 
 TEST_F(TcpCubicSenderTest, SimpleSender) {
   QuicCongestionFeedbackFrame feedback;
   // At startup make sure we are at the default.
   EXPECT_EQ(kDefaultWindowTCP,
             sender_->AvailableCongestionWindow());
   // At startup make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
   // Get default QuicCongestionFeedbackFrame from receiver.
   ASSERT_TRUE(receiver_->GenerateCongestionFeedback(&feedback));
   sender_->OnIncomingQuicCongestionFeedbackFrame(feedback, clock_.Now(),
-                                                 fake_bandwidth_, not_used_);
+                                                 not_used_);
   // Make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
   // And that window is un-affected.
   EXPECT_EQ(kDefaultWindowTCP, sender_->AvailableCongestionWindow());
 
   // A retransmitt should always retun 0.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), IS_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
 }
 
 TEST_F(TcpCubicSenderTest, ExponentialSlowStart) {
   const int kNumberOfAck = 20;
   QuicCongestionFeedbackFrame feedback;
   // At startup make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
   // Get default QuicCongestionFeedbackFrame from receiver.
   ASSERT_TRUE(receiver_->GenerateCongestionFeedback(&feedback));
   sender_->OnIncomingQuicCongestionFeedbackFrame(feedback, clock_.Now(),
-                                                 fake_bandwidth_, not_used_);
+                                                 not_used_);
   // Make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
 
   for (int n = 0; n < kNumberOfAck; ++n) {
     // Send our full congestion window.
     SendAvailableCongestionWindow();
     AckNPackets(2);
   }
   QuicByteCount bytes_to_send = sender_->CongestionWindow();
   EXPECT_EQ(kDefaultWindowTCP + kMaxPacketSize * 2 * kNumberOfAck,
             bytes_to_send);
 }
 
 TEST_F(TcpCubicSenderTest, SlowStartAckTrain) {
   // Make sure that we fall out of slow start when we send ACK train longer
   // than half the RTT, in this test case 30ms, which is more than 30 calls to
   // Ack2Packets in one round.
   // Since we start at 10 packet first round will be 5 second round 10 etc
   // Hence we should pass 30 at 65 = 5 + 10 + 20 + 30
   const int kNumberOfAck = 65;
   QuicCongestionFeedbackFrame feedback;
   // At startup make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
   // Get default QuicCongestionFeedbackFrame from receiver.
   ASSERT_TRUE(receiver_->GenerateCongestionFeedback(&feedback));
   sender_->OnIncomingQuicCongestionFeedbackFrame(feedback, clock_.Now(),
-                                                 fake_bandwidth_, not_used_);
+                                                 not_used_);
   // Make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
 
   for (int n = 0; n < kNumberOfAck; ++n) {
     // Send our full congestion window.
     SendAvailableCongestionWindow();
     AckNPackets(2);
   }
   QuicByteCount expected_congestion_window = kDefaultWindowTCP +
@@ skipping 22 matching lines @@
 TEST_F(TcpCubicSenderTest, SlowStartPacketLoss) {
   // Make sure that we fall out of slow start when we encounter a packet loss.
   const int kNumberOfAck = 10;
   QuicCongestionFeedbackFrame feedback;
   // At startup make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
   // Get default QuicCongestionFeedbackFrame from receiver.
   ASSERT_TRUE(receiver_->GenerateCongestionFeedback(&feedback));
   sender_->OnIncomingQuicCongestionFeedbackFrame(feedback, clock_.Now(),
-                                                 fake_bandwidth_, not_used_);
+                                                 not_used_);
   // Make sure we can send.
   EXPECT_TRUE(sender_->TimeUntilSend(
       clock_.Now(), NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA).IsZero());
 
   for (int i = 0; i < kNumberOfAck; ++i) {
     // Send our full congestion window.
     SendAvailableCongestionWindow();
     AckNPackets(2);
   }
   SendAvailableCongestionWindow();
@@ skipping 32 matching lines @@
     EXPECT_EQ(expected_congestion_window, sender_->CongestionWindow());
   }
   SendAvailableCongestionWindow();
   AckNPackets(1);
   expected_congestion_window += kMaxPacketSize;
   EXPECT_EQ(expected_congestion_window, sender_->CongestionWindow());
 }
 
 }  // namespace test
 }  // namespace net