Add new device ID unit tests to UserMediaClientImpl.

content/renderer/media/mock_media_stream_dispatcher.cc

 // Copyright (c) 2012 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 "content/renderer/media/mock_media_stream_dispatcher.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "content/public/common/media_stream_request.h"
 #include "media/base/audio_parameters.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 22 matching lines @@
     const url::Origin& url) {
   // Audio and video share the same request so we use |audio_input_request_id_|
   // only.
   audio_input_request_id_ = request_id;
 
   stream_label_ = "local_stream" + base::IntToString(request_id);
   audio_input_array_.clear();
   video_array_.clear();
 
   if (controls.audio.requested) {
-    AddAudioInputDeviceToArray(false);
+    AddAudioInputDeviceToArray(false, controls.audio.device_id);
   }
   if (controls.video.requested) {
-    AddVideoDeviceToArray(true);
+    AddVideoDeviceToArray(true, controls.video.device_id);
   }
   ++request_stream_counter_;
 }
 
 void MockMediaStreamDispatcher::CancelGenerateStream(
     int request_id,
     const base::WeakPtr<MediaStreamDispatcherEventHandler>& event_handler) {
   EXPECT_EQ(request_id, audio_input_request_id_);
 }
 
@@ skipping 18 matching lines @@
                                                 int index) {
   return -1;
 }
 
 int MockMediaStreamDispatcher::audio_session_id(const std::string& label,
                                                 int index) {
   return -1;
 }
 
 void MockMediaStreamDispatcher::AddAudioInputDeviceToArray(
-    bool matched_output) {
+    bool matched_output,
+    const std::string& device_id) {
   StreamDeviceInfo audio;
-  audio.device.id = test_same_id_ ? "test_id" : "audio_input_device_id";
+  audio.device.id = test_same_id_ ? "test_id" : device_id;
   audio.device.id = audio.device.id + base::IntToString(session_id_);
   audio.device.name = "microphone";
   audio.device.type = MEDIA_DEVICE_AUDIO_CAPTURE;
   audio.device.video_facing = MEDIA_VIDEO_FACING_NONE;
   if (matched_output) {
     audio.device.matched_output_device_id =
         kAudioOutputDeviceIdPrefix + base::IntToString(session_id_);
   }
   audio.session_id = session_id_;
   audio.device.input.sample_rate = media::AudioParameters::kAudioCDSampleRate;
   audio.device.input.channel_layout = media::CHANNEL_LAYOUT_STEREO;
   audio.device.input.frames_per_buffer = audio.device.input.sample_rate / 100;
   audio_input_array_.push_back(audio);
 }
 
-void MockMediaStreamDispatcher::AddVideoDeviceToArray(bool facing_user) {
+void MockMediaStreamDispatcher::AddVideoDeviceToArray(
+    bool facing_user,
+    const std::string& device_id) {
   StreamDeviceInfo video;
-  video.device.id = test_same_id_ ? "test_id" : "video_device_id";
+  video.device.id = test_same_id_ ? "test_id" : device_id;
   video.device.id = video.device.id + base::IntToString(session_id_);
   video.device.name = "usb video camera";
   video.device.type = MEDIA_DEVICE_VIDEO_CAPTURE;
   video.device.video_facing = facing_user ? MEDIA_VIDEO_FACING_USER
                                           : MEDIA_VIDEO_FACING_ENVIRONMENT;
   video.session_id = session_id_;
   video_array_.push_back(video);
 }
 
 }  // namespace content