Add a mojo implementation of AudioOutputIPC.

content/renderer/media/mojo_audio_output_ipc_unittest.cc

Index: content/renderer/media/mojo_audio_output_ipc_unittest.cc
diff --git a/content/renderer/media/mojo_audio_output_ipc_unittest.cc b/content/renderer/media/mojo_audio_output_ipc_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7da268875ddc359940ef7051291831b0d3320dd3
--- /dev/null
+++ b/content/renderer/media/mojo_audio_output_ipc_unittest.cc
@@ -0,0 +1,561 @@
+// Copyright 2017 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/renderer/media/mojo_audio_output_ipc.h"
+
+#include <algorithm>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "base/message_loop/message_loop.h"
+#include "base/optional.h"
+#include "base/run_loop.h"
+#include "media/audio/audio_device_description.h"
+#include "media/base/audio_parameters.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/system/platform_handle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/origin.h"
+
+using testing::_;
+using testing::AtLeast;
+using testing::Mock;
+using testing::StrictMock;
+
+namespace content {
+
+namespace {
+
+const int kSessionId = 1234;
+const size_t kMemoryLength = 4321;
+const char kDeviceId[] = "device_id";
+const char kReturnedDeviceId[] = "returned_device_id";
+const double kNewVolume = 0.271828;
+
+url::Origin Origin() {
+  return {};
+}
+
+media::AudioParameters Params() {
+  return media::AudioParameters::UnavailableDeviceParams();
+}
+
+MojoAudioOutputIPC::FactoryAccessor NullAccessor() {
+  return base::BindRepeating(
+      []() -> mojom::RendererAudioOutputStreamFactory* { return nullptr; });
+}
+
+class TestRemoteFactory : public mojom::RendererAudioOutputStreamFactory {
+ public:
+  TestRemoteFactory()
+      : expect_request_(false),
+        binding_(this, mojo::MakeRequest(&this_proxy_)) {}
+
+  ~TestRemoteFactory() override {}
+
+  void RequestDeviceAuthorization(
+      media::mojom::AudioOutputStreamProviderRequest stream_provider_request,
+      int64_t session_id,
+      const std::string& device_id,
+      RequestDeviceAuthorizationCallback callback) override {
+    EXPECT_EQ(session_id, expected_session_id_);
+    EXPECT_EQ(device_id, expected_device_id_);
+    EXPECT_TRUE(expect_request_);
+    if (provider_) {
+      std::move(callback).Run(
+          media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK, Params(),
+          std::string(kReturnedDeviceId));
+      provider_binding_.emplace(provider_.get(),
+                                std::move(stream_provider_request));
+    } else {
+      std::move(callback).Run(
+          media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_ERROR_NOT_AUTHORIZED,
+          Params(), std::string(""));
+    }
+    expect_request_ = false;
+  }
+
+  void PrepareProviderForAuthorization(
+      int64_t session_id,
+      const std::string& device_id,
+      std::unique_ptr<media::mojom::AudioOutputStreamProvider> provider) {
+    EXPECT_FALSE(expect_request_);
+    expect_request_ = true;
+    expected_session_id_ = session_id;
+    expected_device_id_ = device_id;
+    provider_binding_.reset();
+    std::swap(provider_, provider);
+  }
+
+  void RefuseNextRequest(int64_t session_id, const std::string& device_id) {
+    EXPECT_FALSE(expect_request_);
+    expect_request_ = true;
+    expected_session_id_ = session_id;
+    expected_device_id_ = device_id;
+  }
+
+  void Disconnect() {
+    binding_.Close();
+    this_proxy_.reset();
+    binding_.Bind(mojo::MakeRequest(&this_proxy_));
+    provider_binding_.reset();
+    provider_.reset();
+    expect_request_ = false;
+  }
+
+  MojoAudioOutputIPC::FactoryAccessor GetAccessor() {
+    return base::BindRepeating(&TestRemoteFactory::get, base::Unretained(this));
+  }
+
+ private:
+  mojom::RendererAudioOutputStreamFactory* get() { return this_proxy_.get(); }
+
+  bool expect_request_;
+  int64_t expected_session_id_;
+  std::string expected_device_id_;
+
+  mojom::RendererAudioOutputStreamFactoryPtr this_proxy_;
+  mojo::Binding<mojom::RendererAudioOutputStreamFactory> binding_;
+  std::unique_ptr<media::mojom::AudioOutputStreamProvider> provider_;
+  base::Optional<mojo::Binding<media::mojom::AudioOutputStreamProvider>>
+      provider_binding_;
+};
+
+class TestStreamProvider : public media::mojom::AudioOutputStreamProvider {
+ public:
+  explicit TestStreamProvider(media::mojom::AudioOutputStream* stream)
+      : stream_(stream) {}
+
+  ~TestStreamProvider() override {
+    // If we expected a stream to be acquired, make sure it is so.
+    if (stream_)
+      EXPECT_TRUE(binding_);
+  }
+
+  void Acquire(media::mojom::AudioOutputStreamRequest stream_request,
+               const media::AudioParameters& params,
+               const AcquireCallback& callback) override {
+    EXPECT_EQ(binding_, base::nullopt);
+    EXPECT_NE(stream_, nullptr);
+    binding_.emplace(stream_, std::move(stream_request));
+    base::CancelableSyncSocket foreign_socket;
+    EXPECT_TRUE(
+        base::CancelableSyncSocket::CreatePair(&socket_, &foreign_socket));
+    std::move(callback).Run(mojo::SharedBufferHandle::Create(kMemoryLength),
+                            mojo::WrapPlatformFile(foreign_socket.Release()));
+  }
+
+ private:
+  media::mojom::AudioOutputStream* stream_;
+  base::Optional<mojo::Binding<media::mojom::AudioOutputStream>> binding_;
+  base::CancelableSyncSocket socket_;
+};
+
+class MockStream : public media::mojom::AudioOutputStream {
+ public:
+  MOCK_METHOD0(Play, void());
+  MOCK_METHOD0(Pause, void());
+  MOCK_METHOD1(SetVolume, void(double));
+};
+
+class MockDelegate : public media::AudioOutputIPCDelegate {
+ public:
+  MockDelegate() {}
+  ~MockDelegate() override {}
+
+  void OnStreamCreated(base::SharedMemoryHandle mem_handle,
+                       base::SyncSocket::Handle socket_handle,
+                       int length) {
+    base::SharedMemory sh_mem(
+        mem_handle, /*read_only*/ false);  // Releases the shared memory handle.
+    base::SyncSocket socket(socket_handle);  // Releases the socket descriptor.
+    GotOnStreamCreated(length);
+  }
+
+  MOCK_METHOD0(OnError, void());
+  MOCK_METHOD3(OnDeviceAuthorized,
+               void(media::OutputDeviceStatus device_status,
+                    const media::AudioParameters& output_params,
+                    const std::string& matched_device_id));
+  MOCK_METHOD1(GotOnStreamCreated, void(int length));
+  MOCK_METHOD0(OnIPCClosed, void());
+};
+
+}  // namespace
+
+TEST(MojoAudioOutputIPC, AuthorizeWithoutFactory_CallsOnIPCClosed) {
+  base::MessageLoopForIO message_loop;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(NullAccessor());
+
+  EXPECT_CALL(delegate, OnIPCClosed());
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, CreateWithoutFactoryOrAuthorization_CallsOnIPCClosed) {
+  base::MessageLoopForIO message_loop;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(NullAccessor());
+
+  EXPECT_CALL(delegate, OnIPCClosed());
+  ipc->CreateStream(&delegate, Params());
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, DeviceAuthorized_Propagates) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(nullptr));
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, OnDeviceCreated_Propagates) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  ipc->CreateStream(&delegate, Params());
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC,
+     CreateWithoutAuthorization_RequestsAuthorizationFirst) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  // Note: This call implicitly EXPECTs that authorization is requested,
+  // and constructing the TestStreamProvider with a |&stream| EXPECTs that the
+  // stream is created. This implicit request should always be for the default
+  // device and no session id.
+  stream_factory.PrepareProviderForAuthorization(
+      0, std::string(media::AudioDeviceDescription::kDefaultDeviceId),
+      base::MakeUnique<TestStreamProvider>(&stream));
+
+  ipc->CreateStream(&delegate, Params());
+
+  EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, IsReusable) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  for (int i = 0; i < 5; ++i) {
+    stream_factory.PrepareProviderForAuthorization(
+        kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+    ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+    ipc->CreateStream(&delegate, Params());
+
+    EXPECT_CALL(
+        delegate,
+        OnDeviceAuthorized(media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                           _, std::string(kReturnedDeviceId)));
+    EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+    base::RunLoop().RunUntilIdle();
+    Mock::VerifyAndClearExpectations(&delegate);
+
+    ipc->CloseStream();
+    base::RunLoop().RunUntilIdle();
+  }
+}
+
+TEST(MojoAudioOutputIPC, IsReusableAfterError) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(nullptr));
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  base::RunLoop().RunUntilIdle();
+  Mock::VerifyAndClearExpectations(&delegate);
+
+  EXPECT_CALL(delegate, OnError()).Times(AtLeast(1));
+  stream_factory.Disconnect();
+  base::RunLoop().RunUntilIdle();
+  Mock::VerifyAndClearExpectations(&delegate);
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+
+  for (int i = 0; i < 5; ++i) {
+    stream_factory.PrepareProviderForAuthorization(
+        kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+    ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+    ipc->CreateStream(&delegate, Params());
+
+    EXPECT_CALL(
+        delegate,
+        OnDeviceAuthorized(media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                           _, std::string(kReturnedDeviceId)));
+    EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+    base::RunLoop().RunUntilIdle();
+    Mock::VerifyAndClearExpectations(&delegate);
+
+    ipc->CloseStream();
+    base::RunLoop().RunUntilIdle();
+  }
+}
+
+TEST(MojoAudioOutputIPC, DeviceNotAuthorized_Propagates) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.RefuseNextRequest(kSessionId, kDeviceId);
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+
+  EXPECT_CALL(
+      delegate,
+      OnDeviceAuthorized(
+          media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_ERROR_NOT_AUTHORIZED,
+          _, std::string()));
+  EXPECT_CALL(delegate, OnError()).Times(AtLeast(0));
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC,
+     FactoryDisconnectedBeforeAuthorizationReply_CallsAuthorizedAnyways) {
+  // The authorization IPC message might be aborted by the remote end
+  // disconnecting. In this case, the MojoAudioOutputIPC object must still
+  // send a notification to unblock the AudioOutputIPCDelegate.
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+
+  EXPECT_CALL(
+      delegate,
+      OnDeviceAuthorized(
+          media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_ERROR_INTERNAL, _,
+          std::string()));
+  stream_factory.Disconnect();
+  EXPECT_CALL(delegate, OnError());
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC,
+     FactoryDisconnectedAfterAuthorizationReply_CallsAuthorizedOnlyOnce) {
+  // This test makes sure that the MojoAudioOutputIPC doesn't callback for
+  // authorization when the factory disconnects if it already got a callback
+  // for authorization.
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(nullptr));
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  base::RunLoop().RunUntilIdle();
+
+  stream_factory.Disconnect();
+  EXPECT_CALL(delegate, OnError());
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+#if DCHECK_IS_ON()

[DaleCurtis, 2017/05/24 01:36:55]

There's EXPECT_DCHECK_DEATH().

[Max Morin, 2017/05/30 14:17:11]

Done.

+TEST(MojoAudioOutputIPC, AuthorizeNoClose_DCHECKs) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockDelegate> delegate;
+
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(nullptr));
+
+  std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  EXPECT_DEATH(
+      ipc.reset(),
+      ".*CloseStream must be called before destructing the AudioOutputIPC.*");
+  ipc->CloseStream();
+  ipc.reset();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, CreateNoClose_DCHECKs) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockDelegate> delegate;
+  StrictMock<MockStream> stream;
+
+  stream_factory.PrepareProviderForAuthorization(
+      0, std::string(media::AudioDeviceDescription::kDefaultDeviceId),
+      base::MakeUnique<TestStreamProvider>(&stream));
+
+  std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+
+  ipc->CreateStream(&delegate, Params());
+  EXPECT_DEATH(
+      ipc.reset(),
+      ".*CloseStream must be called before destructing the AudioOutputIPC.*");
+  ipc->CloseStream();
+  ipc.reset();
+  base::RunLoop().RunUntilIdle();
+}
+#endif  // DCHECK_IS_ON()
+
+TEST(MojoAudioOutputIPC, Play_Plays) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  ipc->CreateStream(&delegate, Params());
+  ipc->PlayStream();
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+  EXPECT_CALL(stream, Play());
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, Pause_Pauses) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  ipc->CreateStream(&delegate, Params());
+  ipc->PauseStream();
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+  EXPECT_CALL(stream, Pause());
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+TEST(MojoAudioOutputIPC, SetVolume_SetsVolume) {
+  base::MessageLoopForIO message_loop;
+  TestRemoteFactory stream_factory;
+  StrictMock<MockStream> stream;
+  StrictMock<MockDelegate> delegate;
+
+  const std::unique_ptr<media::AudioOutputIPC> ipc =
+      base::MakeUnique<MojoAudioOutputIPC>(stream_factory.GetAccessor());
+  stream_factory.PrepareProviderForAuthorization(
+      kSessionId, kDeviceId, base::MakeUnique<TestStreamProvider>(&stream));
+
+  ipc->RequestDeviceAuthorization(&delegate, kSessionId, kDeviceId, Origin());
+  ipc->CreateStream(&delegate, Params());
+  ipc->SetVolume(kNewVolume);
+
+  EXPECT_CALL(delegate, OnDeviceAuthorized(
+                            media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                            _, std::string(kReturnedDeviceId)));
+  EXPECT_CALL(delegate, GotOnStreamCreated(kMemoryLength));
+  EXPECT_CALL(stream, SetVolume(kNewVolume));
+  base::RunLoop().RunUntilIdle();
+
+  ipc->CloseStream();
+  base::RunLoop().RunUntilIdle();
+}
+
+}  // namespace content