Make the audio channel communicate network state changes to the call.

webrtc/call/call_unittest.cc

Index: webrtc/call/call_unittest.cc
diff --git a/webrtc/call/call_unittest.cc b/webrtc/call/call_unittest.cc
index 75c8238a5bd94bc3726e7f61c276e6963a1a64c1..7a21869ac1d168fa71493ea9fcba03f74c2e5992 100644
--- a/webrtc/call/call_unittest.cc
+++ b/webrtc/call/call_unittest.cc
@@ -106,4 +106,36 @@ TEST(CallTest, CreateDestroy_AudioReceiveStreams) {
     streams.clear();
   }
 }
+
+TEST(CallTest, AggregateNetworkState_DownOnlyIfAllChannelsAreDown) {
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+      ChannelNetworkState::CHANNEL_NOT_PRESENT,
+      ChannelNetworkState::CHANNEL_NOT_PRESENT));
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+      ChannelNetworkState::CHANNEL_NETWORK_UP,
+      ChannelNetworkState::CHANNEL_NOT_PRESENT));
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NOT_PRESENT,
+    ChannelNetworkState::CHANNEL_NETWORK_UP));
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NETWORK_UP,
+    ChannelNetworkState::CHANNEL_NETWORK_UP));
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN,
+    ChannelNetworkState::CHANNEL_NETWORK_UP));
+  EXPECT_EQ(kNetworkUp, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NETWORK_UP,
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN));
+
+  EXPECT_EQ(kNetworkDown, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN,
+    ChannelNetworkState::CHANNEL_NOT_PRESENT));
+  EXPECT_EQ(kNetworkDown, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NOT_PRESENT,
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN));
+  EXPECT_EQ(kNetworkDown, AggregateNetworkState(
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN,
+    ChannelNetworkState::CHANNEL_NETWORK_DOWN));
+}
+
 }  // namespace webrtc