Log audio network adapter decisions in event log.

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc

Index: webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
index b26d2f5db8faac77a0a62168ef4dedc64adc47aa..9b608dce479922afb0c4918e0285f5a2e9f67f3c 100644
--- a/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
@@ -11,6 +11,7 @@
 #include <utility>
 #include <vector>
 
+#include "webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/mock/mock_controller.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/mock/mock_controller_manager.h"
@@ -52,6 +53,7 @@ struct AudioNetworkAdaptorStates {
   std::unique_ptr<AudioNetworkAdaptorImpl> audio_network_adaptor;
   std::vector<std::unique_ptr<MockController>> mock_controllers;
   std::unique_ptr<SimulatedClock> simulated_clock;
+  std::unique_ptr<MockRtcEventLog> event_log;
   MockDebugDumpWriter* mock_debug_dump_writer;
 };
 
@@ -76,6 +78,7 @@ AudioNetworkAdaptorStates CreateAudioNetworkAdaptor() {
       .WillRepeatedly(Return(controllers));
 
   states.simulated_clock.reset(new SimulatedClock(kClockInitialTimeMs * 1000));
+  states.event_log.reset(new NiceMock<MockRtcEventLog>());
 
   auto debug_dump_writer =
       std::unique_ptr<MockDebugDumpWriter>(new NiceMock<MockDebugDumpWriter>());
@@ -84,6 +87,7 @@ AudioNetworkAdaptorStates CreateAudioNetworkAdaptor() {
 
   AudioNetworkAdaptorImpl::Config config;
   config.clock = states.simulated_clock.get();
+  config.event_log = states.event_log.get();
   // AudioNetworkAdaptorImpl governs the lifetime of controller manager.
   states.audio_network_adaptor.reset(new AudioNetworkAdaptorImpl(
       config,
@@ -205,4 +209,20 @@ TEST(AudioNetworkAdaptorImplTest,
   states.audio_network_adaptor->SetOverhead(kOverhead);
 }
 
+TEST(AudioNetworkAdaptorImplTest, LogRuntimeConfigOnGetEncoderRuntimeConfig) {
+  auto states = CreateAudioNetworkAdaptor();
+
+  AudioNetworkAdaptor::EncoderRuntimeConfig config;
+  config.bitrate_bps = rtc::Optional<int>(32000);
+  config.enable_fec = rtc::Optional<bool>(true);
+
+  EXPECT_CALL(*states.mock_controllers[0], MakeDecision(_, _))
+      .WillOnce(SetArgPointee<1>(config));
+
+  EXPECT_CALL(*states.event_log,
+              LogAudioNetworkAdaptation(EncoderRuntimeConfigIs(config)))
+      .Times(1);
+  states.audio_network_adaptor->GetEncoderRuntimeConfig();
+}
+
 }  // namespace webrtc