Remove device enumeration, caching and monitoring from MediaStreamManager.

content/browser/renderer_host/media/audio_input_device_manager_unittest.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/browser/renderer_host/media/audio_input_device_manager.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "media/audio/audio_manager_base.h"
+#include "media/base/media_switches.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using testing::_;
 using testing::InSequence;
-using testing::SaveArg;
-using testing::Return;
 
 namespace content {
 
 class MockAudioInputDeviceManagerListener
     : public MediaStreamProviderListener {
  public:
   MockAudioInputDeviceManagerListener() {}
   virtual ~MockAudioInputDeviceManagerListener() {}
 
   MOCK_METHOD2(Opened, void(MediaStreamType, const int));
@@ skipping 16 matching lines @@
 #else
 #define MAYBE_AudioInputDeviceManagerTest AudioInputDeviceManagerTest
 #endif
 
 class MAYBE_AudioInputDeviceManagerTest : public testing::Test {
  public:
   MAYBE_AudioInputDeviceManagerTest() {}
 
  protected:
   void SetUp() override {
+    base::CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kUseFakeDeviceForMediaStream);
     audio_manager_ = media::AudioManager::CreateForTesting(
         base::ThreadTaskRunnerHandle::Get());
     // Flush the message loop to ensure proper initialization of AudioManager.
     base::RunLoop().RunUntilIdle();
 
     manager_ = new AudioInputDeviceManager(audio_manager_.get());
-    manager_->UseFakeDevice();
     audio_input_listener_.reset(new MockAudioInputDeviceManagerListener());
     manager_->Register(audio_input_listener_.get(),
                        audio_manager_->GetTaskRunner());
 
-    // Gets the enumerated device list from the AudioInputDeviceManager.
-    manager_->EnumerateDevices(MEDIA_DEVICE_AUDIO_CAPTURE);
-    EXPECT_CALL(*audio_input_listener_,
-                DevicesEnumerated(MEDIA_DEVICE_AUDIO_CAPTURE, _))
-        .Times(1)
-        .WillOnce(SaveArg<1>(&devices_));
+    // Use fake devices.
+    devices_.emplace_back(MEDIA_DEVICE_AUDIO_CAPTURE, "Fake Device 1",
+                          "fake_device_1");
+    devices_.emplace_back(MEDIA_DEVICE_AUDIO_CAPTURE, "Fake Device 2",
+                          "fake_device_2");
 
     // Wait until we get the list.
     base::RunLoop().RunUntilIdle();
   }
 
   void TearDown() override {
     manager_->Unregister();
   }
 
   TestBrowserThreadBundle thread_bundle_;
   scoped_refptr<AudioInputDeviceManager> manager_;
   std::unique_ptr<MockAudioInputDeviceManagerListener> audio_input_listener_;
   media::ScopedAudioManagerPtr audio_manager_;
   StreamDeviceInfoArray devices_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MAYBE_AudioInputDeviceManagerTest);
 };
 
 // Opens and closes the devices.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, OpenAndCloseDevice) {
-
   ASSERT_FALSE(devices_.empty());
 
   InSequence s;
 
   for (StreamDeviceInfoArray::const_iterator iter = devices_.begin();
        iter != devices_.end(); ++iter) {
     // Opens/closes the devices.
     int session_id = manager_->Open(*iter);
 
     // Expected mock call with expected return value.
@@ skipping 164 matching lines @@
   DCHECK(!info);
 
   manager_->Close(session_id);
   EXPECT_CALL(*audio_input_listener_,
               Closed(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
       .Times(1);
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace content