Exclude non-simple-usage audio nodes from being selected as primary node, and do not persist their …

chromeos/audio/cras_audio_handler_unittest.cc

 // 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/audio/cras_audio_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 557 matching lines @@
   const AudioDevice* active_keyboard_mic = GetDeviceFromId(kKeyboardMic.id);
   EXPECT_TRUE(active_keyboard_mic->active);
 
   // Make keyboard mic inactive.
   cras_audio_handler_->SetKeyboardMicActive(false);
   EXPECT_EQ(kInternalMic.id, cras_audio_handler_->GetPrimaryActiveInputNode());
   const AudioDevice* inactive_keyboard_mic = GetDeviceFromId(kKeyboardMic.id);
   EXPECT_FALSE(inactive_keyboard_mic->active);
 }
 
+TEST_F(CrasAudioHandlerTest, KeyboardMicNotSetAsPrimaryActive) {
+  AudioNodeList audio_nodes;
+  audio_nodes.push_back(kKeyboardMic);
+  SetUpCrasAudioHandler(audio_nodes);
+
+  // Verify keyboard mic is not set as primary active input.
+  AudioDeviceList audio_devices;
+  cras_audio_handler_->GetAudioDevices(&audio_devices);
+  EXPECT_EQ(audio_nodes.size(), audio_devices.size());
+  EXPECT_TRUE(cras_audio_handler_->HasKeyboardMic());
+  EXPECT_EQ(0u, cras_audio_handler_->GetPrimaryActiveInputNode());
+
+  // Verify the internal mic is set as primary input.
+  audio_nodes.push_back(kInternalMic);
+  ChangeAudioNodes(audio_nodes);
+  cras_audio_handler_->GetAudioDevices(&audio_devices);
+  EXPECT_EQ(audio_nodes.size(), audio_devices.size());
+  EXPECT_TRUE(cras_audio_handler_->HasKeyboardMic());
+  EXPECT_EQ(kInternalMic.id, cras_audio_handler_->GetPrimaryActiveInputNode());
+}
+
 TEST_F(CrasAudioHandlerTest, SwitchActiveOutputDevice) {
   AudioNodeList audio_nodes;
   audio_nodes.push_back(kInternalSpeaker);
   audio_nodes.push_back(kHeadphone);
   SetUpCrasAudioHandler(audio_nodes);
   AudioDeviceList audio_devices;
   cras_audio_handler_->GetAudioDevices(&audio_devices);
   EXPECT_EQ(audio_nodes.size(), audio_devices.size());
 
   // Verify the initial active output device is headphone.
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       cras_audio_handler_->GetPrimaryActiveOutputDevice(&active_output));
   EXPECT_EQ(kInternalSpeaker.id, active_output.id);
   EXPECT_EQ(kInternalSpeaker.id,
             cras_audio_handler_->GetPrimaryActiveOutputNode());
   EXPECT_FALSE(cras_audio_handler_->IsOutputMuted());
   EXPECT_EQ(1, test_observer_->output_mute_changed_count());
   EXPECT_TRUE(test_observer_->output_mute_by_system());
 }
 
 }  // namespace chromeos