Reland "Remove ViEEncoder::SetNetworkStatus"

webrtc/modules/congestion_controller/congestion_controller_unittest.cc

Index: webrtc/modules/congestion_controller/congestion_controller_unittest.cc
diff --git a/webrtc/modules/congestion_controller/congestion_controller_unittest.cc b/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
index 20bf1a88e62ae5a0cda13241dec5ea874be8dad8..c82c75daf3cdd5f6f794cb26a5f715947d02ba3d 100644
--- a/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
@@ -113,5 +113,45 @@ TEST_F(CongestionControllerTest, OnSendQueueFullAndEstimateChange) {
   controller_->Process();
 }
 
+TEST_F(CongestionControllerTest, SignalNetworkState) {
+  EXPECT_CALL(observer_, OnNetworkChanged(0, _, _));
+  controller_->SignalNetworkState(kNetworkDown);
+
+  EXPECT_CALL(observer_, OnNetworkChanged(kInitialBitrateBps, _, _));
+  controller_->SignalNetworkState(kNetworkUp);
+
+  EXPECT_CALL(observer_, OnNetworkChanged(0, _, _));
+  controller_->SignalNetworkState(kNetworkDown);
+}
+
+TEST_F(CongestionControllerTest,
+       SignalNetworkStateAndQueueIsFullAndEstimateChange) {
+  // Send queue is full
+  EXPECT_CALL(*pacer_, ExpectedQueueTimeMs())
+      .WillRepeatedly(Return(PacedSender::kMaxQueueLengthMs + 1));
+  EXPECT_CALL(observer_, OnNetworkChanged(0, _, _));
+  controller_->Process();
+
+  // Queue is full and network is down. Expect no bitrate change.
+  controller_->SignalNetworkState(kNetworkDown);
+  controller_->Process();
+
+  // Queue is full but network is up. Expect no bitrate change.
+  controller_->SignalNetworkState(kNetworkUp);
+  controller_->Process();
+
+  // Receive new estimate but let the queue still be full.
+  EXPECT_CALL(*pacer_, SetEstimatedBitrate(kInitialBitrateBps * 2));
+  bandwidth_observer_->OnReceivedEstimatedBitrate(kInitialBitrateBps * 2);
+  clock_.AdvanceTimeMilliseconds(25);
+  controller_->Process();
+
+  // Let the pacer not be full next time the controller checks.
+  EXPECT_CALL(*pacer_, ExpectedQueueTimeMs())
+      .WillOnce(Return(PacedSender::kMaxQueueLengthMs - 1));
+  EXPECT_CALL(observer_, OnNetworkChanged(kInitialBitrateBps * 2, _, _));
+  controller_->Process();
+}
+
 }  // namespace test
 }  // namespace webrtc