Switch stream creation and closing in Chrome audio rendering from IPC to Mojo

content/renderer/media/audio_output_client_unittest.cc

Index: content/renderer/media/audio_output_client_unittest.cc
diff --git a/content/renderer/media/audio_output_client_unittest.cc b/content/renderer/media/audio_output_client_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..384763e65a9880239b151510c31439f3ac26e09d
--- /dev/null
+++ b/content/renderer/media/audio_output_client_unittest.cc
@@ -0,0 +1,354 @@
+// Copyright (c) 2016 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/memory/shared_memory.h"
+#include "base/run_loop.h"
+#include "base/sync_socket.h"
+#include "content/public/test/test_browser_thread.h"
+#include "content/renderer/media/audio_message_filter.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+/*
+using ::testing::_;
+
+namespace content {
+
+namespace {
+// const int kBufferSize1 = 30;
+const int kBufferSize2 = 40;
+const int kBufferSize3 = 50;
+// const int kRenderFrameId = 5;
+const int kStreamId1 = 9;
+const int kStreamId2 = 20;
+const int kStreamId3 = 3;
+}
+
+class MockAudioMessageFilter : public AudioMessageFilter {
+ public:
+  MockAudioMessageFilter(
+      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner)
+      : AudioMessageFilter(io_task_runner) {}
+  MOCK_METHOD4(OnStreamCreated,
+               void(int stream_id,
+                    base::SharedMemoryHandle handle,
+                    base::SyncSocket::TransitDescriptor socket_descriptor,
+                    uint32_t length));
+  MOCK_METHOD2(OnStreamStateChanged,
+               void(int stream_id, media::AudioOutputIPCDelegateState state));
+  MOCK_METHOD1(CloseStream, void(int stream_id));
+
+ protected:
+  ~MockAudioMessageFilter() {}
+};
+
+class TestAudioOutputImpl;
+
+class AudioOutputClientTest : public testing::Test {
+ public:
+  AudioOutputClientTest() {
+    message_loop_.reset(new base::MessageLoopForUI());
+    io_thread_.reset(
+        new TestBrowserThread(BrowserThread::IO, message_loop_.get()));
+
+    audio_output_client_ =
+        new AudioOutputClient(NULL, message_loop_->task_runner());
+    audio_message_filter_ =
+        new MockAudioMessageFilter(message_loop_->task_runner());
+  }
+
+  void CreateStreamCallback(int stream_id,
+                            media::mojom::AudioOutputStreamPtr stream,
+                            mojo::ScopedSharedBufferHandle shared_buffer,
+                            mojo::ScopedHandle socket_descriptor) {}
+  static mojo::ScopedSharedBufferHandle GenerateBuffer(int buffer_size) {
+    base::SharedMemory shared_memory;
+    shared_memory.CreateAnonymous(buffer_size);
+    base::SharedMemoryHandle shared_memory_handle = shared_memory.handle();
+
+    MojoHandle mojo_foreign_memory_handle;
+
+    MojoResult shared_buffer_result = mojo::edk::CreateSharedBufferWrapper(
+        shared_memory_handle, shared_memory.requested_size(), false,
+        &mojo_foreign_memory_handle);
+
+    EXPECT_EQ(shared_buffer_result, MOJO_RESULT_OK);
+
+    mojo::ScopedSharedBufferHandle shared_buffer_handle =
+        mojo::ScopedSharedBufferHandle(
+            mojo::SharedBufferHandle(mojo_foreign_memory_handle));
+    return shared_buffer_handle;
+  }
+
+  static mojo::ScopedHandle GenerateSocket() {
+    base::SyncSocket::TransitDescriptor socket_descriptor;
+
+    MojoHandle socket_descriptor_handle;
+    MojoResult platform_handle_result;
+
+#if defined(OS_WIN)
+    platform_handle_result = mojo::edk::CreatePlatformHandleWrapper(
+      mojo::edk::ScopedPlatformHandle(
+          mojo::edk::PlatformHandle(socket_descriptor),
+      &socket_descriptor_handle);
+#else
+    platform_handle_result = mojo::edk::CreatePlatformHandleWrapper(
+        mojo::edk::ScopedPlatformHandle(
+            mojo::edk::PlatformHandle(socket_descriptor.fd)),
+        &socket_descriptor_handle);
+#endif
+
+  EXPECT_EQ(platform_handle_result, MOJO_RESULT_OK);
+
+  mojo::ScopedHandle socket_handle =
+      mojo::ScopedHandle(mojo::Handle(socket_descriptor_handle));
+  return socket_handle;
+  }
+
+ protected:
+  scoped_refptr<AudioOutputClient> audio_output_client_;
+  std::unique_ptr<base::MessageLoop> message_loop_;
+  scoped_refptr<MockAudioMessageFilter> audio_message_filter_;
+  std::unique_ptr<TestAudioOutputImpl> audio_output_impl_;
+
+ private:
+  std::unique_ptr<TestBrowserThread> io_thread_;
+  DISALLOW_COPY_AND_ASSIGN(AudioOutputClientTest);
+};
+
+class TestAudioOutputStreamImpl : public media::mojom::AudioOutputStream {
+ public:
+  TestAudioOutputStreamImpl(media::mojom::AudioOutputStreamRequest request)
+      : binding_(this, std::move(request)) {}
+  ~TestAudioOutputStreamImpl() override {}
+
+  // AudioOutputStream implementation:
+  static base::RunLoop* run_loop_;
+  static int stream_count_;
+  void Close() override {
+    stream_count_--;
+    // The number of streams that will be closed is 2.
+    EXPECT_TRUE(stream_count_ > -1);
+    if (stream_count_ == 0)
+      run_loop_->Quit();
+  }
+
+ private:
+  mojo::Binding<media::mojom::AudioOutputStream> binding_;
+};
+
+class TestAudioOutputImpl : public media::mojom::AudioOutput {
+ public:
+  TestAudioOutputImpl(media::mojom::AudioOutputRequest request)
+      : binding_(this, std::move(request)) {}
+  ~TestAudioOutputImpl() override {}
+
+  // AudioOutput implementation:
+  void CreateStream(int stream_id,
+                    const media::AudioParameters& params,
+                    const CreateStreamCallback& callback) override {
+    media::mojom::AudioOutputStreamPtr stream_ptr =
+        media::mojom::AudioOutputStreamPtr();
+    std::unique_ptr<TestAudioOutputStreamImpl> stream(
+        new TestAudioOutputStreamImpl(mojo::GetProxy(&stream_ptr)));
+    mojo::ScopedSharedBufferHandle shared_buffer_handle =
+        mojo::ScopedSharedBufferHandle(mojo::SharedBufferHandle());
+
+    callback.Run(stream_id, std::move(stream_ptr),
+                 std::move(shared_buffer_handle),
+                 AudioOutputClientTest::GenerateSocket());
+  }
+
+ private:
+  mojo::Binding<media::mojom::AudioOutput> binding_;
+};
+
+base::RunLoop* TestAudioOutputStreamImpl::run_loop_;
+int TestAudioOutputStreamImpl::stream_count_ = 2;
+
+TEST_F(AudioOutputClientTest, CreateStream) {
+  base::RunLoop run_loop;
+  media::mojom::AudioOutputPtr audio_output_impl_ptr;
+  audio_output_impl_.reset(
+      new TestAudioOutputImpl(mojo::GetProxy(&audio_output_impl_ptr)));
+  media::AudioParameters params(
+      media::AudioParameters::AUDIO_FAKE, media::CHANNEL_LAYOUT_STEREO,
+      media::AudioParameters::kAudioCDSampleRate, 16,
+      media::AudioParameters::kAudioCDSampleRate / 10);
+  int stream_count = 2;
+  audio_output_client_->service_ = std::move(audio_output_impl_ptr);
+
+  audio_output_client_->CreateStream(
+      kStreamId1, params,
+      [&run_loop, &stream_count](int stream_id,
+                                 media::mojom::AudioOutputStreamPtr stream_ptr,
+                                 mojo::ScopedSharedBufferHandle shared_buffer,
+                                 mojo::ScopedHandle socket_descriptor) {
+        EXPECT_EQ(kStreamId1, stream_id);
+        EXPECT_TRUE(stream_ptr.is_bound());
+        stream_count--;
+        // The number of streams that will be closed is 2.
+        EXPECT_TRUE(stream_count > -1);
+        if (stream_count == 1)
+          run_loop.Quit();
+      });
+
+  audio_output_client_->CreateStream(
+      kStreamId2, params,
+      [&run_loop, &stream_count](int stream_id,
+                                 media::mojom::AudioOutputStreamPtr stream_ptr,
+                                 mojo::ScopedSharedBufferHandle shared_buffer,
+                                 mojo::ScopedHandle socket_descriptor) {
+        EXPECT_EQ(kStreamId2, stream_id);
+        EXPECT_TRUE(stream_ptr.is_bound());
+        stream_count--;
+        // The number of streams that will be closed is 2.
+        EXPECT_TRUE(stream_count > -1);
+        if (stream_count == 0)
+          run_loop.Quit();
+      });
+  run_loop.Run();
+}
+
+TEST_F(AudioOutputClientTest, CreateStreamCallback) {
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId2, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(0);
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamCreated(kStreamId2, _, _, kBufferSize2))
+      .Times(1);
+
+  media::mojom::AudioOutputStreamPtr stream_ptr2;
+  std::unique_ptr<TestAudioOutputStreamImpl> stream2(
+      new TestAudioOutputStreamImpl(mojo::GetProxy(&stream_ptr2)));
+
+  audio_output_client_->CreateStreamCallback(kStreamId2, std::move(stream_ptr2),
+                                             GenerateBuffer(kBufferSize2),
+                                             GenerateSocket());
+
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId3, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(0);
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamCreated(kStreamId3, _, _, kBufferSize3))
+      .Times(1);
+  media::mojom::AudioOutputStreamPtr stream_ptr3;
+
+  std::unique_ptr<TestAudioOutputStreamImpl> stream3(
+      new TestAudioOutputStreamImpl(mojo::GetProxy(&stream_ptr3)));
+
+  audio_output_client_->CreateStreamCallback(kStreamId3, std::move(stream_ptr3),
+                                             GenerateBuffer(kBufferSize3),
+                                             GenerateSocket());
+
+  message_loop_->RunUntilIdle();
+}
+
+TEST_F(AudioOutputClientTest, CreateStreamCallbackNotFound) {
+  media::mojom::AudioOutputStreamPtr stream_ptr1;
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId1, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(0);
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId1, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(1);
+
+  audio_output_client_->CreateStreamCallback(kStreamId1, std::move(stream_ptr1),
+                                             GenerateBuffer(kBufferSize1),
+                                             GenerateSocket());
+
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId2, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(0);
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamCreated(kStreamId2, _, _, kBufferSize2))
+      .Times(1);
+
+  media::mojom::AudioOutputStreamPtr stream_ptr2;
+  std::unique_ptr<AudioOutputStreamImpl> stream2(new AudioOutputStreamImpl(
+      mojo::GetProxy(&stream_ptr2), kStreamId2, kRenderFrameId, NULL));
+
+  audio_output_client_->CreateStreamCallback(kStreamId2, std::move(stream_ptr2),
+                                             GenerateBuffer(kBufferSize2),
+                                             GenerateSocket());
+
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamStateChanged(
+                  kStreamId3, media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_ERROR))
+      .Times(0);
+  EXPECT_CALL(*audio_message_filter_,
+              OnStreamCreated(kStreamId3, _, _, kBufferSize3))
+      .Times(1);
+  media::mojom::AudioOutputStreamPtr stream_ptr3;
+
+  std::unique_ptr<AudioOutputStreamImpl> stream3(new AudioOutputStreamImpl(
+      mojo::GetProxy(&stream_ptr3), kStreamId3, kRenderFrameId, NULL));
+
+  audio_output_client_->CreateStreamCallback(kStreamId3, std::move(stream_ptr3),
+                                             GenerateBuffer(kBufferSize3),
+                                             GenerateSocket());
+
+  message_loop_->RunUntilIdle();
+}
+
+TEST_F(AudioOutputClientTest, CloseAuthorizedNotCreatedStream) {
+  base::RunLoop run_loop;
+  media::mojom::AudioOutputPtr audio_output_impl_ptr;
+  audio_output_impl_.reset(
+      new TestAudioOutputImpl(mojo::GetProxy(&audio_output_impl_ptr)));
+  audio_output_client_->service_ = std::move(audio_output_impl_ptr);
+
+  EXPECT_CALL(*audio_message_filter_, CloseStream(kStreamId1)).Times(1);
+
+  audio_output_client_->CloseStream(kStreamId1);
+
+  EXPECT_CALL(*audio_message_filter_, CloseStream(kStreamId2)).Times(1);
+  audio_output_client_->CloseStream(kStreamId2);
+}
+
+TEST_F(AudioOutputClientTest, CloseCreatedStream) {
+  TestAudioOutputStreamImpl::run_loop_ = new base::RunLoop();
+  media::mojom::AudioOutputPtr audio_output_impl_ptr;
+  audio_output_impl_.reset(
+      new TestAudioOutputImpl(mojo::GetProxy(&audio_output_impl_ptr)));
+  audio_output_client_->service_ = std::move(audio_output_impl_ptr);
+
+  media::mojom::AudioOutputStreamPtr stream_ptr1;
+  std::unique_ptr<TestAudioOutputStreamImpl> stream1(
+      new TestAudioOutputStreamImpl(mojo::GetProxy(&stream_ptr1)));
+  audio_output_client_->streams_.insert(
+      std::make_pair(kStreamId1, std::move(stream_ptr1)));
+
+  // Closing an authorized but ńot created stream should call
+  // AudioMessageFilter::CloseStream.
+  EXPECT_CALL(*audio_message_filter_, CloseStream(kStreamId3)).Times(1);
+
+  audio_output_client_->CloseStream(kStreamId3);
+
+  audio_output_client_->CloseStream(kStreamId1);
+
+  media::mojom::AudioOutputStreamPtr stream_ptr2;
+  std::unique_ptr<TestAudioOutputStreamImpl> stream2(
+      new TestAudioOutputStreamImpl(mojo::GetProxy(&stream_ptr2)));
+  audio_output_client_->streams_.insert(
+      std::make_pair(kStreamId2, std::move(stream_ptr2)));
+  audio_output_client_->CloseStream(kStreamId2);
+  TestAudioOutputStreamImpl::run_loop_->Run();
+
+  // |kStreamId1| is cllosed now. Closing it will call
+  // AudioMessageFilter::CloseStream. The same for |kStreamId2|
+  EXPECT_CALL(*audio_message_filter_, CloseStream(kStreamId1)).Times(1);
+  audio_output_client_->CloseStream(kStreamId1);
+
+  EXPECT_CALL(*audio_message_filter_, CloseStream(kStreamId2)).Times(1);
+  audio_output_client_->CloseStream(kStreamId2);
+}
+
+}  // namespace content
+*/