Added automatic mode to FakeInputAudioStream to generate automatic beeps

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 <string>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 36 matching lines @@
 #if defined(OS_ANDROID)
 #define MAYBE_AudioInputDeviceManagerTest DISABLED_AudioInputDeviceManagerTest
 #else
 #define MAYBE_AudioInputDeviceManagerTest AudioInputDeviceManagerTest
 #endif
 
 class MAYBE_AudioInputDeviceManagerTest : public testing::Test {
  public:
   MAYBE_AudioInputDeviceManagerTest() {}
 
-  // Returns true iff machine has an audio input device.
-  bool CanRunAudioInputDeviceTests() {
-    return audio_manager_->HasAudioInputDevices();
-  }
-
  protected:
   virtual void SetUp() OVERRIDE {
     // The test must run on Browser::IO.
     message_loop_.reset(new base::MessageLoopForIO);
     io_thread_.reset(new BrowserThreadImpl(BrowserThread::IO,
                                            message_loop_.get()));
     audio_manager_.reset(media::AudioManager::CreateForTesting());
     // Wait for audio thread initialization to complete.  Otherwise the
     // enumeration type may not have been set yet.
     base::WaitableEvent event(false, false);
     audio_manager_->GetTaskRunner()->PostTask(FROM_HERE, base::Bind(
         &base::WaitableEvent::Signal, base::Unretained(&event)));
     event.Wait();
     manager_ = new AudioInputDeviceManager(audio_manager_.get());
+    manager_->UseFakeDevice();

[DaleCurtis, 2014/05/06 17:36:52]

Do you want to set this only if no real devices exist?

[no longer working on chromium, 2014/05/07 08:55:41]

Not really, the tests are designed for testing the behavior of
AudioInputDeviceManager, using fake devices or real devices are the same.

     audio_input_listener_.reset(new MockAudioInputDeviceManagerListener());
     manager_->Register(audio_input_listener_.get(),
                        message_loop_->message_loop_proxy().get());
 
     // 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_));
@@ skipping 13 matching lines @@
   scoped_ptr<MockAudioInputDeviceManagerListener> audio_input_listener_;
   scoped_ptr<media::AudioManager> audio_manager_;
   StreamDeviceInfoArray devices_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MAYBE_AudioInputDeviceManagerTest);
 };
 
 // Opens and closes the devices.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, OpenAndCloseDevice) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
 
   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.
     EXPECT_CALL(*audio_input_listener_,
                 Opened(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
         .Times(1);
     // Waits for the callback.
     message_loop_->RunUntilIdle();
 
     manager_->Close(session_id);
     EXPECT_CALL(*audio_input_listener_,
                 Closed(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
         .Times(1);
 
     // Waits for the callback.
     message_loop_->RunUntilIdle();
   }
 }
 
 // Opens multiple devices at one time and closes them later.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, OpenMultipleDevices) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
-
   ASSERT_FALSE(devices_.empty());
 
   InSequence s;
 
   int index = 0;
   scoped_ptr<int[]> session_id(new int[devices_.size()]);
 
   // Opens the devices in a loop.
   for (StreamDeviceInfoArray::const_iterator iter = devices_.begin();
        iter != devices_.end(); ++iter, ++index) {
@@ skipping 23 matching lines @@
                 Closed(MEDIA_DEVICE_AUDIO_CAPTURE, session_id[i]))
         .Times(1);
 
     // Waits for the callback.
     message_loop_->RunUntilIdle();
   }
 }
 
 // Opens a non-existing device.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, OpenNotExistingDevice) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
   InSequence s;
 
   MediaStreamType stream_type = MEDIA_DEVICE_AUDIO_CAPTURE;
   std::string device_name("device_doesnt_exist");
   std::string device_id("id_doesnt_exist");
   int sample_rate(0);
   int channel_config(0);
   StreamDeviceInfo dummy_device(
       stream_type, device_name, device_id, sample_rate, channel_config, 2048);
 
   int session_id = manager_->Open(dummy_device);
   EXPECT_CALL(*audio_input_listener_,
               Opened(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
       .Times(1);
 
   // Waits for the callback.
   message_loop_->RunUntilIdle();
 }
 
 // Opens default device twice.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, OpenDeviceTwice) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
-
   ASSERT_FALSE(devices_.empty());
 
   InSequence s;
 
   // Opens and closes the default device twice.
   int first_session_id = manager_->Open(devices_.front());
   int second_session_id = manager_->Open(devices_.front());
 
   // Expected mock calls with expected returned values.
   EXPECT_NE(first_session_id, second_session_id);
@@ skipping 13 matching lines @@
       .Times(1);
   EXPECT_CALL(*audio_input_listener_,
               Closed(MEDIA_DEVICE_AUDIO_CAPTURE, second_session_id))
       .Times(1);
   // Waits for the callback.
   message_loop_->RunUntilIdle();
 }
 
 // Accesses then closes the sessions after opening the devices.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, AccessAndCloseSession) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
-
   ASSERT_FALSE(devices_.empty());
 
   InSequence s;
 
   int index = 0;
   scoped_ptr<int[]> session_id(new int[devices_.size()]);
 
   // Loops through the devices and calls Open()/Close()/GetOpenedDeviceInfoById
   // for each device.
   for (StreamDeviceInfoArray::const_iterator iter = devices_.begin();
@@ skipping 13 matching lines @@
     manager_->Close(session_id[index]);
     EXPECT_CALL(*audio_input_listener_,
                 Closed(MEDIA_DEVICE_AUDIO_CAPTURE, session_id[index]))
         .Times(1);
     message_loop_->RunUntilIdle();
   }
 }
 
 // Access an invalid session.
 TEST_F(MAYBE_AudioInputDeviceManagerTest, AccessInvalidSession) {
-  if (!CanRunAudioInputDeviceTests())
-    return;
   InSequence s;
 
   // Opens the first device.
   StreamDeviceInfoArray::const_iterator iter = devices_.begin();
   int session_id = manager_->Open(*iter);
   EXPECT_CALL(*audio_input_listener_,
               Opened(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
       .Times(1);
   message_loop_->RunUntilIdle();
 
   // Access a non-opened device.
   // This should fail and return an empty StreamDeviceInfo.
   int invalid_session_id = session_id + 1;
   const StreamDeviceInfo* info =
       manager_->GetOpenedDeviceInfoById(invalid_session_id);
   DCHECK(!info);
 
   manager_->Close(session_id);
   EXPECT_CALL(*audio_input_listener_,
               Closed(MEDIA_DEVICE_AUDIO_CAPTURE, session_id))
       .Times(1);
   message_loop_->RunUntilIdle();
 }
 
 }  // namespace content