Adding basic implementation of AudioNetworkAdaptor.

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
new file mode 100644
index 0000000000000000000000000000000000000000..46f56595b07871cfd0890ae748f20a3ba2d7a57d
--- /dev/null
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
@@ -0,0 +1,110 @@
+/*
+ *  Copyright (c) 2016 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.
+ */
+
+#include <utility>
+#include <vector>
+
+#include "testing/gtest/include/gtest/gtest.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"
+
+namespace webrtc {
+
+using ::testing::_;
+using ::testing::NiceMock;
+using ::testing::Return;
+
+namespace {
+
+constexpr size_t kNumControllers = 2;
+
+MATCHER_P(NetworkMetricsIs, metric, "") {
+  return arg.uplink_bandwidth_bps == metric.uplink_bandwidth_bps &&
+         arg.uplink_packet_loss_fraction == metric.uplink_packet_loss_fraction;
+}
+
+MATCHER_P(ConstraintsReceiverFrameLengthRangeIs, frame_length_range, "") {
+  return arg.receiver_frame_length_range->min_frame_length_ms ==
+             frame_length_range.min_frame_length_ms &&
+         arg.receiver_frame_length_range->max_frame_length_ms ==
+             frame_length_range.max_frame_length_ms;
+}
+
+struct AudioNetworkAdaptorStates {
+  std::unique_ptr<AudioNetworkAdaptorImpl> audio_network_adaptor;
+  std::vector<std::unique_ptr<MockController>> mock_controllers;
+};
+
+AudioNetworkAdaptorStates CreateAudioNetworkAdaptor() {
+  AudioNetworkAdaptorStates states;
+  std::vector<Controller*> controllers;
+  for (size_t i = 0; i < kNumControllers; ++i) {
+    auto controller =
+        std::unique_ptr<MockController>(new NiceMock<MockController>());
+    EXPECT_CALL(*controller, Die());
+    controllers.push_back(controller.get());
+    states.mock_controllers.push_back(std::move(controller));
+  }
+
+  auto controller_manager = std::unique_ptr<MockControllerManager>(
+      new NiceMock<MockControllerManager>());
+
+  EXPECT_CALL(*controller_manager, Die());
+  EXPECT_CALL(*controller_manager, GetControllers())
+      .WillRepeatedly(Return(controllers));
+  EXPECT_CALL(*controller_manager, GetSortedControllers(_))
+      .WillRepeatedly(Return(controllers));
+
+  // AudioNetworkAdaptorImpl governs the lifetime of controller manager.
+  states.audio_network_adaptor.reset(new AudioNetworkAdaptorImpl(
+      AudioNetworkAdaptorImpl::Config(), std::move(controller_manager)));
+
+  return states;
+}
+
+}  // namespace
+
+TEST(AudioNetworkAdaptorImplTest,
+     MakeDecisionIsCalledOnGetEncoderRuntimeConfig) {
+  AudioNetworkAdaptorStates states = CreateAudioNetworkAdaptor();

[kwiberg-webrtc, 2016/09/13 11:11:42]

Excellent! Optionally, shorten this to

  auto states = CreateAudioNetworkAdaptor();

on the theory that the exact type of states isn't that interesting.

[minyue-webrtc, 2016/09/13 11:48:50]

yes, shorter is preferred. Thanks!

+
+  constexpr int kBandwidth = 16000;
+  constexpr float kPacketLoss = 0.7f;
+
+  Controller::NetworkMetrics check;
+  check.uplink_bandwidth_bps = rtc::Optional<int>(kBandwidth);
+
+  for (auto& mock_controller : states.mock_controllers) {
+    EXPECT_CALL(*mock_controller, MakeDecision(NetworkMetricsIs(check), _));
+  }
+  states.audio_network_adaptor->SetUplinkBandwidth(kBandwidth);
+  states.audio_network_adaptor->GetEncoderRuntimeConfig();
+
+  check.uplink_packet_loss_fraction = rtc::Optional<float>(kPacketLoss);
+  for (auto& mock_controller : states.mock_controllers) {
+    EXPECT_CALL(*mock_controller, MakeDecision(NetworkMetricsIs(check), _));
+  }
+  states.audio_network_adaptor->SetUplinkPacketLossFraction(kPacketLoss);
+  states.audio_network_adaptor->GetEncoderRuntimeConfig();
+}
+
+TEST(AudioNetworkAdaptorImplTest, SetConstraintsIsCalledOnSetFrameLengthRange) {
+  AudioNetworkAdaptorStates states = CreateAudioNetworkAdaptor();
+
+  for (auto& mock_controller : states.mock_controllers) {
+    EXPECT_CALL(*mock_controller,
+                SetConstraints(ConstraintsReceiverFrameLengthRangeIs(
+                    Controller::Constraints::FrameLengthRange(20, 120))));
+  }
+  states.audio_network_adaptor->SetReceiverFrameLengthRange(20, 120);
+}
+
+}  // namespace webrtc