Ensures that audio tasks cannot run after AudioManager is deleted.

media/audio/cras/cras_unified_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 <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
@@ skipping 45 matching lines @@
   FakeAudioLogFactory fake_audio_log_factory_;
 };
 
 class CrasUnifiedStreamTest : public testing::Test {
  protected:
   CrasUnifiedStreamTest() {
     mock_manager_.reset(new StrictMock<MockAudioManagerCras>());
     base::RunLoop().RunUntilIdle();
   }
 
-  ~CrasUnifiedStreamTest() override {}
+  ~CrasUnifiedStreamTest() override {
+    mock_manager_->GetTaskRunner()->PostTask(
+        FROM_HERE, base::Bind(&media::AudioManager::Shutdown,
+                              base::Unretained(mock_manager_.get())));
+  }
 
   CrasUnifiedStream* CreateStream(ChannelLayout layout) {
     return CreateStream(layout, kTestFramesPerPacket);
   }
 
   CrasUnifiedStream* CreateStream(ChannelLayout layout,
                                   int32_t samples_per_packet) {
     AudioParameters params(kTestFormat, layout, kTestSampleRate,
                            kTestBitsPerSample, samples_per_packet);
     return new CrasUnifiedStream(params, mock_manager_.get(),
                                  AudioDeviceDescription::kDefaultDeviceId);
   }
 
   MockAudioManagerCras& mock_manager() {
     return *(mock_manager_.get());
   }
 
   static const ChannelLayout kTestChannelLayout;
   static const int kTestSampleRate;
   static const int kTestBitsPerSample;
   static const AudioParameters::Format kTestFormat;
   static const uint32_t kTestFramesPerPacket;
 
   base::TestMessageLoop message_loop_;
-  std::unique_ptr<StrictMock<MockAudioManagerCras>, AudioManagerDeleter>
-      mock_manager_;
+  std::unique_ptr<StrictMock<MockAudioManagerCras>> mock_manager_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CrasUnifiedStreamTest);
 };
 
 const ChannelLayout CrasUnifiedStreamTest::kTestChannelLayout =
     CHANNEL_LAYOUT_STEREO;
 const int CrasUnifiedStreamTest::kTestSampleRate =
     AudioParameters::kAudioCDSampleRate;
 const int CrasUnifiedStreamTest::kTestBitsPerSample = 16;
@@ skipping 52 matching lines @@
 
   // Wait for samples to be captured.
   EXPECT_TRUE(event.TimedWait(TestTimeouts::action_timeout()));
 
   test_stream->Stop();
 
   test_stream->Close();
 }
 
 }  // namespace media