Ensures that audio tasks cannot run after AudioManager is deleted.

media/audio/audio_input_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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/environment.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
@@ skipping 41 matching lines @@
 class AudioInputTest : public testing::Test {
  public:
   AudioInputTest()
       : message_loop_(base::MessageLoop::TYPE_UI),
         audio_manager_(AudioManager::CreateForTesting(
             base::ThreadTaskRunnerHandle::Get())),
         audio_input_stream_(NULL) {
     base::RunLoop().RunUntilIdle();
   }
 
-  ~AudioInputTest() override {}
+  ~AudioInputTest() override { audio_manager_->Shutdown(); }
 
  protected:
   bool InputDevicesAvailable() {
     return audio_manager_->HasAudioInputDevices();
   }
 
   void MakeAudioInputStreamOnAudioThread() {
     RunOnAudioThread(
         base::Bind(&AudioInputTest::MakeAudioInputStream,
                    base::Unretained(this)));
@@ skipping 72 matching lines @@
 
   // Synchronously runs the provided callback/closure on the audio thread.
   void RunOnAudioThread(const base::Closure& closure) {
     DCHECK(audio_manager_->GetTaskRunner()->BelongsToCurrentThread());
     closure.Run();
   }
 
   void OnLogMessage(const std::string& message) {}
 
   base::TestMessageLoop message_loop_;
-  ScopedAudioManagerPtr audio_manager_;
+  std::unique_ptr<AudioManager> audio_manager_;
   AudioInputStream* audio_input_stream_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioInputTest);
 };
 
 // Test create and close of an AudioInputStream without recording audio.
 TEST_F(AudioInputTest, CreateAndClose) {
   ABORT_AUDIO_TEST_IF_NOT(InputDevicesAvailable());
   MakeAudioInputStreamOnAudioThread();
@@ skipping 47 matching lines @@
       FROM_HERE, run_loop.QuitClosure(),
       base::TimeDelta::FromMilliseconds(500));
   run_loop.Run();
   EXPECT_GE(test_callback.callback_count(), 2);
   EXPECT_FALSE(test_callback.had_error());
 
   StopAndCloseAudioInputStreamOnAudioThread();
 }
 
 }  // namespace media