Ensures that audio tasks cannot run after AudioManager is deleted.

media/audio/mac/audio_auhal_mac_unittest.cc

 // Copyright 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 "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_message_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "media/audio/audio_device_info_accessor_for_tests.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_unittest_util.h"
 #include "media/audio/mock_audio_source_callback.h"
+#include "media/audio/test_audio_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 using testing::DoAll;
 using testing::Return;
 
 // TODO(crogers): Most of these tests can be made platform agnostic.
 // http://crbug.com/223242
 
 namespace media {
 
 ACTION(ZeroBuffer) {
   arg3->Zero();
 }
 
 ACTION_P3(MaybeSignalEvent, counter, signal_at_count, event) {
   if (++(*counter) == signal_at_count)
     event->Signal();
 }
 
 class AUHALStreamTest : public testing::Test {
  public:
   AUHALStreamTest()
       : message_loop_(base::MessageLoop::TYPE_UI),
         manager_(AudioManager::CreateForTesting(
-            base::ThreadTaskRunnerHandle::Get())),
+            base::MakeUnique<TestAudioThread>())),
         manager_device_info_(manager_.get()) {
     // Wait for the AudioManager to finish any initialization on the audio loop.
     base::RunLoop().RunUntilIdle();
   }
 
-  ~AUHALStreamTest() override {}
+  ~AUHALStreamTest() override { manager_->Shutdown(); }
 
   AudioOutputStream* Create() {
     return manager_->MakeAudioOutputStream(
         manager_device_info_.GetDefaultOutputStreamParameters(), "",
         base::Bind(&AUHALStreamTest::OnLogMessage, base::Unretained(this)));
   }
 
   bool OutputDevicesAvailable() {
     return manager_device_info_.HasAudioOutputDevices();
   }
 
   void OnLogMessage(const std::string& message) { log_message_ = message; }
 
  protected:
   base::TestMessageLoop message_loop_;
-  ScopedAudioManagerPtr manager_;
+  std::unique_ptr<AudioManager> manager_;
   AudioDeviceInfoAccessorForTests manager_device_info_;
   MockAudioSourceCallback source_;
   std::string log_message_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AUHALStreamTest);
 };
 
 TEST_F(AUHALStreamTest, HardwareSampleRate) {
   ABORT_AUDIO_TEST_IF_NOT(OutputDevicesAvailable());
@@ skipping 36 matching lines @@
   stream->Start(&source_);
   event.Wait();
 
   stream->Stop();
   stream->Close();
 
   EXPECT_FALSE(log_message_.empty());
 }
 
 }  // namespace media