Call QuicSentPacketManager's OnPacketSerialized or OnRetransmittedPacket

net/quic/quic_unacked_packet_map_test.cc

 // Copyright 2014 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/quic_unacked_packet_map.h"
 
 #include "net/quic/test_tools/quic_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using std::min;
@@ skipping 269 matching lines @@
   EXPECT_EQ(kDefaultLength, unacked_packets_.bytes_in_flight());
 
   // Simulate an F-RTO, and restore 1 to flight.
   unacked_packets_.RestoreInFlight(1);
   VerifyUnackedPackets(unacked, arraysize(unacked));
   VerifyInFlightPackets(unacked, arraysize(unacked));
   VerifyRetransmittablePackets(retransmittable, arraysize(retransmittable));
   EXPECT_EQ(2 * kDefaultLength, unacked_packets_.bytes_in_flight());
 }
 
+TEST_F(QuicUnackedPacketMapTest, SendWithGap) {
+  // Simulate a retransmittable packet being sent, retransmitted, and the first
+  // transmission being acked.
+  unacked_packets_.AddPacket(CreateRetransmittablePacket(1));
+  unacked_packets_.SetSent(1, now_, kDefaultLength, true);
+  unacked_packets_.AddPacket(CreateRetransmittablePacket(3));
+  unacked_packets_.SetSent(3, now_, kDefaultLength, true);
+  unacked_packets_.OnRetransmittedPacket(1, 5, LOSS_RETRANSMISSION);
+  unacked_packets_.SetSent(5, now_, kDefaultLength, true);
+
+  EXPECT_EQ(1u, unacked_packets_.GetLeastUnacked());
+  EXPECT_TRUE(unacked_packets_.IsUnacked(1));
+  EXPECT_FALSE(unacked_packets_.IsUnacked(2));
+  EXPECT_TRUE(unacked_packets_.IsUnacked(3));
+  EXPECT_FALSE(unacked_packets_.IsUnacked(4));
+  EXPECT_TRUE(unacked_packets_.IsUnacked(5));
+  EXPECT_EQ(5u, unacked_packets_.largest_sent_packet());
+}
+
+
 }  // namespace
 }  // namespace test
 }  // namespace net