Add test coverage for CrasAudioHandler.

chromeos/dbus/cras_audio_client_stub_impl.cc

Index: chromeos/dbus/cras_audio_client_stub_impl.cc
diff --git a/chromeos/dbus/cras_audio_client_stub_impl.cc b/chromeos/dbus/cras_audio_client_stub_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..348a32912b296b211da5483eafe5b5a5a1bae56e
--- /dev/null
+++ b/chromeos/dbus/cras_audio_client_stub_impl.cc
@@ -0,0 +1,152 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chromeos/dbus/cras_audio_client_stub_impl.h"
+
+namespace chromeos {
+
+CrasAudioClientStubImpl::CrasAudioClientStubImpl() {
+  VLOG(1) << "CrasAudioClientStubImpl is created";
+
+  // Fake audio output nodes.
+  AudioNode node_1;
+  node_1.is_input = false;
+  node_1.id = 10001;
+  node_1.device_name = "Fake Speaker";
+  node_1.type = "INTERNAL_SPEAKER";
+  node_1.name = "Speaker";
+  node_1.active = false;
+  node_list_.push_back(node_1);
+
+  AudioNode node_2;
+  node_2.is_input = false;
+  node_2.id = 10002;
+  node_2.device_name = "Fake Headphone";
+  node_2.type = "HEADPHONE";
+  node_2.name = "Headphone";
+  node_2.active = false;
+  node_list_.push_back(node_2);
+  active_output_node_id_ = node_2.id;
+
+  AudioNode node_3;
+  node_3.is_input = false;
+  node_3.id = 10003;
+  node_3.device_name = "Fake Bluetooth Headphone";
+  node_3.type = "BLUETOOTH";
+  node_3.name = "Bluetooth Headphone";
+  node_3.active = false;
+  node_list_.push_back(node_3);
+
+  // Fake audio input ndoes
+  AudioNode node_4;
+  node_4.is_input = true;
+  node_4.id = 10004;
+  node_4.device_name = "Fake Internal Mic";
+  node_4.type = "INTERNAL_MIC";
+  node_4.name = "Internal Mic";
+  node_4.active = false;
+  node_list_.push_back(node_4);
+
+  AudioNode node_5;
+  node_5.is_input = true;
+  node_5.id = 10005;
+  node_5.device_name = "Fake USB Mic";
+  node_5.type = "USB";
+  node_5.name = "USB Mic";
+  node_5.active = true;
+  node_list_.push_back(node_5);
+  active_input_node_id_ = node_5.id;
+}
+
+CrasAudioClientStubImpl::~CrasAudioClientStubImpl() {
+}
+
+void CrasAudioClientStubImpl::AddObserver(Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void CrasAudioClientStubImpl::RemoveObserver(Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+bool CrasAudioClientStubImpl::HasObserver(Observer* observer) {
+  return observers_.HasObserver(observer);
+}
+
+void CrasAudioClientStubImpl::GetVolumeState(
+    const GetVolumeStateCallback& callback) {
+  callback.Run(volume_state_, true);
+}
+
+void CrasAudioClientStubImpl::GetNodes(const GetNodesCallback& callback) {
+  callback.Run(node_list_, true);
+}
+
+void CrasAudioClientStubImpl::SetOutputNodeVolume(uint64 node_id,
+                                                  int32 volume) {
+}
+
+void CrasAudioClientStubImpl::SetOutputUserMute(bool mute_on) {
+  volume_state_.output_user_mute = mute_on;
+  FOR_EACH_OBSERVER(Observer,
+                    observers_,
+                    OutputMuteChanged(volume_state_.output_user_mute));
+}
+
+void CrasAudioClientStubImpl::SetInputNodeGain(uint64 node_id,
+                                               int32 input_gain) {
+}
+
+void CrasAudioClientStubImpl::SetInputMute(bool mute_on) {
+  volume_state_.input_mute = mute_on;
+  FOR_EACH_OBSERVER(Observer,
+                    observers_,
+                    InputMuteChanged(volume_state_.input_mute));
+}
+
+void CrasAudioClientStubImpl::SetActiveOutputNode(uint64 node_id) {
+  if (active_output_node_id_ == node_id)
+    return;
+
+  for (size_t i = 0; i < node_list_.size(); ++i) {
+    if (node_list_[i].id == active_output_node_id_)
+      node_list_[i].active = false;
+    else if (node_list_[i].id == node_id)
+      node_list_[i].active = true;
+  }
+  active_output_node_id_ = node_id;
+  FOR_EACH_OBSERVER(Observer,
+                    observers_,
+                    ActiveOutputNodeChanged(node_id));
+}
+
+void CrasAudioClientStubImpl::SetActiveInputNode(uint64 node_id) {
+  if (active_input_node_id_ == node_id)
+    return;
+
+  for (size_t i = 0; i < node_list_.size(); ++i) {
+    if (node_list_[i].id == active_input_node_id_)
+      node_list_[i].active = false;
+    else if (node_list_[i].id == node_id)
+      node_list_[i].active = true;
+  }
+  active_input_node_id_ = node_id;
+  FOR_EACH_OBSERVER(Observer,
+                    observers_,
+                    ActiveInputNodeChanged(node_id));
+}
+
+void CrasAudioClientStubImpl::SetAudioDevices(
+    const AudioNodeList& audio_nodes) {
+  node_list_.clear();
+  for (size_t i = 0; i < audio_nodes.size(); ++i)
+    node_list_.push_back(audio_nodes[i]);
+}
+
+void CrasAudioClientStubImpl::ChangeAudioNodes(const AudioNodeList& new_nodes) {
+  SetAudioDevices(new_nodes);
+  FOR_EACH_OBSERVER(Observer, observers_, NodesChanged());
+}
+
+}  // namespace chromeos