Don't send audio packets if the network is down.

webrtc/modules/pacing/paced_sender_unittest.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 611 matching lines @@
                                false);
     send_bucket_->InsertPacket(PacedSender::kHighPriority, ssrc_high_priority,
                                sequence_number++, second_capture_time_ms, 250,
                                false);
   }
 
   // Expect everything to be queued.
   EXPECT_EQ(second_capture_time_ms - capture_time_ms,
             send_bucket_->QueueInMs());
 
-  // Expect only high priority packets to come out while paused.
-  EXPECT_CALL(callback_, TimeToSendPadding(_, _)).Times(0);
-  EXPECT_CALL(callback_, TimeToSendPacket(_, _, _, _, _)).Times(0);
-  EXPECT_CALL(callback_,
-              TimeToSendPacket(ssrc_high_priority, _, capture_time_ms, _, _))
-      .Times(packets_to_send_per_interval)
-      .WillRepeatedly(Return(true));
-  EXPECT_CALL(callback_, TimeToSendPacket(ssrc_high_priority, _,
-                                          second_capture_time_ms, _, _))
-      .Times(packets_to_send_per_interval)
-      .WillRepeatedly(Return(true));
-
   for (int i = 0; i < 10; ++i) {
     clock_.AdvanceTimeMilliseconds(5);
     EXPECT_EQ(0, send_bucket_->TimeUntilNextProcess());
     send_bucket_->Process();
   }
 
-  // Expect normal prio packets to come out first (in capture order)
-  // followed by all low prio packets (in capture order).
+  // Expect high prio packets to come out first followed by normal
+  // prio packets and low prio packets (all in capture order).
   {
     ::testing::InSequence sequence;
+    EXPECT_CALL(callback_,
+                TimeToSendPacket(ssrc_high_priority, _, capture_time_ms, _, _))
+        .Times(packets_to_send_per_interval)
+        .WillRepeatedly(Return(true));
+    EXPECT_CALL(callback_, TimeToSendPacket(ssrc_high_priority, _,
+                                            second_capture_time_ms, _, _))
+        .Times(packets_to_send_per_interval)
+        .WillRepeatedly(Return(true));
+
     for (size_t i = 0; i < packets_to_send_per_interval; ++i) {
       EXPECT_CALL(callback_, TimeToSendPacket(ssrc, _, capture_time_ms, _, _))
           .Times(1)
           .WillRepeatedly(Return(true));
     }
     for (size_t i = 0; i < packets_to_send_per_interval; ++i) {
       EXPECT_CALL(callback_,
                   TimeToSendPacket(ssrc, _, second_capture_time_ms, _, _))
           .Times(1)
           .WillRepeatedly(Return(true));
@@ skipping 369 matching lines @@
 
   // No more probing packets.
   EXPECT_CALL(callback_, TimeToSendPadding(_, PacketInfo::kNotAProbe))
         .Times(1)
         .WillRepeatedly(Return(500));
   send_bucket_->Process();
 }
 
 }  // namespace test
 }  // namespace webrtc