[WebMIDI] Introduce MidiManagerUsb

media/midi/midi_manager_usb_unittest.cc

Index: media/midi/midi_manager_usb_unittest.cc
diff --git a/media/midi/midi_manager_usb_unittest.cc b/media/midi/midi_manager_usb_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..35857ba86e4dd5e0fc3d66f9144d77d6cc7aa87e
--- /dev/null
+++ b/media/midi/midi_manager_usb_unittest.cc
@@ -0,0 +1,276 @@
+// Copyright (c) 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 "media/midi/midi_manager_usb.h"
+
+#include "media/midi/usb_midi_device.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+namespace {
+
+using ::testing::InSequence;
+using ::testing::Return;
+using ::testing::StrictMock;
+
+template<typename T, size_t N>
+std::vector<T> ToVector(const T (&array)[N]) {
+  return std::vector<T>(array, array + N);
+}
+
+class MockUsbMidiDevice : public UsbMidiDevice {
+ public:
+  virtual ~MockUsbMidiDevice() {}
+
+  MOCK_METHOD1(RequestPermission,
+               void(base::Callback<void(bool result)> callback));
+  MOCK_METHOD0(GetDescriptor, std::vector<uint8>());
+  MOCK_METHOD2(Send, void(uint8, const std::vector<uint8>&));
+};
+
+class MockMIDIManagerClient : public MIDIManagerClient {
+ public:
+  virtual ~MockMIDIManagerClient() {}
+
+  // Define ReceiveMIDIData with vector parameter for the ease of
+  // test expectation description.
+  MOCK_METHOD3(ReceiveMIDIData,
+               void(uint32, const std::vector<uint8>&, double));
+
+  virtual void ReceiveMIDIData(uint32 port_index,
+                               const uint8* data,
+                               size_t size,
+                               double timestamp) OVERRIDE {
+    ReceiveMIDIData(port_index,
+                    std::vector<uint8>(data, data + size),
+                    timestamp);
+  }
+
+  MOCK_METHOD1(AccumulateMIDIBytesSent, void(size_t));
+};
+
+class TestUsbMidiDeviceFactory : public UsbMidiDevice::Factory {
+ public:
+  TestUsbMidiDeviceFactory() {}
+  virtual ~TestUsbMidiDeviceFactory() {}
+  virtual void EnumerateDevices(UsbMidiDeviceDelegate* device,
+                                Callback callback) OVERRIDE {
+    callback_ = callback;
+  }
+
+  Callback callback_;
+};
+
+class MIDIManagerUsbTest : public ::testing::Test {
+ public:
+  MIDIManagerUsbTest() : is_initialized_(false), is_well_initialized_(false) {
+    scoped_ptr<TestUsbMidiDeviceFactory> factory(new TestUsbMidiDeviceFactory);
+    factory_ = factory.get();
+    manager_.reset(
+        new MIDIManagerUsb(factory.PassAs<UsbMidiDevice::Factory>()));
+  }
+
+ protected:
+  void Initialize() {
+    manager_->Initialize(base::Bind(&MIDIManagerUsbTest::OnInitializeDone,
+                                    base::Unretained(this)));
+  }
+
+  void OnInitializeDone(bool result) {
+    is_initialized_ = true;
+    is_well_initialized_ = result;
+  }
+
+  bool is_initialized_;
+  bool is_well_initialized_;
+
+  scoped_ptr<MIDIManagerUsb> manager_;
+  // Owned by manager_.
+  TestUsbMidiDeviceFactory* factory_;
+};
+
+
+TEST_F(MIDIManagerUsbTest, Initialize) {
+  scoped_ptr<MockUsbMidiDevice> device(new StrictMock<MockUsbMidiDevice>);
+  uint8 descriptor[] = {
+    0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
+    0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
+    0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
+    0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
+    0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
+    0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
+    0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
+    0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
+    0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
+    0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
+    0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
+    0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
+    0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
+    0x05, 0x25, 0x01, 0x01, 0x07,
+  };
+  {
+    InSequence s;
+    EXPECT_CALL(*device, GetDescriptor())
+        .WillOnce(Return(ToVector(descriptor)));
+  }
+
+  Initialize();
+  ScopedVector<UsbMidiDevice> devices;
+  devices.push_back(device.release());
+  EXPECT_FALSE(is_initialized_);
+  factory_->callback_.Run(true, &devices);
+  EXPECT_TRUE(is_initialized_);
+  EXPECT_TRUE(is_well_initialized_);
+
+  ASSERT_EQ(1u, manager_->input_ports().size());
+  ASSERT_EQ(2u, manager_->output_ports().size());
+  ASSERT_TRUE(manager_->input_stream());
+  std::vector<UsbMidiJack> input_jacks = manager_->input_stream()->jacks();
+  ASSERT_EQ(1u, input_jacks.size());
+  ASSERT_EQ(2u, manager_->output_streams().size());
+  EXPECT_EQ(7u, input_jacks[0].jack_id);
+  EXPECT_EQ(2u, manager_->output_streams()[0]->jack().jack_id);
+  EXPECT_EQ(3u, manager_->output_streams()[1]->jack().jack_id);
+  EXPECT_EQ(2u, input_jacks[0].GetEndpointNumber());
+}
+
+TEST_F(MIDIManagerUsbTest, InitializeFail) {
+  Initialize();
+
+  EXPECT_FALSE(is_initialized_);
+  factory_->callback_.Run(false, NULL);
+  EXPECT_TRUE(is_initialized_);
+  EXPECT_FALSE(is_well_initialized_);
+}
+
+TEST_F(MIDIManagerUsbTest, InitializeFailBecauseOfInvalidDescriptor) {
+  scoped_ptr<MockUsbMidiDevice> device(new StrictMock<MockUsbMidiDevice>);
+  uint8 descriptor[] = {0x04};
+  {
+    InSequence s;
+    EXPECT_CALL(*device, GetDescriptor())
+        .WillOnce(Return(ToVector(descriptor)));
+  }
+
+  Initialize();
+  ScopedVector<UsbMidiDevice> devices;
+  devices.push_back(device.release());
+  EXPECT_FALSE(is_initialized_);
+  factory_->callback_.Run(true, &devices);
+  EXPECT_TRUE(is_initialized_);
+  EXPECT_FALSE(is_well_initialized_);
+}
+
+TEST_F(MIDIManagerUsbTest, Send) {
+  scoped_ptr<MockUsbMidiDevice> device(new StrictMock<MockUsbMidiDevice>);
+  uint8 descriptor[] = {
+    0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
+    0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
+    0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
+    0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
+    0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
+    0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
+    0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
+    0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
+    0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
+    0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
+    0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
+    0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
+    0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
+    0x05, 0x25, 0x01, 0x01, 0x07,
+  };
+
+
+  uint8 data[] = {
+    0x90, 0x45, 0x7f,
+    0xf0, 0x00, 0x01, 0xf7,
+  };
+  uint8 expected_data[] = {
+    0x19, 0x90, 0x45, 0x7f,
+    0x14, 0xf0, 0x00, 0x01,
+    0x15, 0xf7, 0x00, 0x00,
+  };
+
+  {
+    InSequence s;
+    EXPECT_CALL(*device, GetDescriptor())
+        .WillOnce(Return(ToVector(descriptor)));
+    EXPECT_CALL(*device, Send(2, ToVector(expected_data)));
+  }
+
+  Initialize();
+  ScopedVector<UsbMidiDevice> devices;
+  devices.push_back(device.release());
+  EXPECT_FALSE(is_initialized_);
+  factory_->callback_.Run(true, &devices);
+  ASSERT_TRUE(is_initialized_);
+  ASSERT_TRUE(is_well_initialized_);
+
+  manager_->DispatchSendMIDIData(NULL, 1, ToVector(data), 0);
+}
+
+TEST_F(MIDIManagerUsbTest, Receive) {
+  scoped_ptr<MockUsbMidiDevice> device(new StrictMock<MockUsbMidiDevice>);
+  scoped_ptr<MockMIDIManagerClient> client(
+      new StrictMock<MockMIDIManagerClient>);
+  uint8 descriptor[] = {
+    0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
+    0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
+    0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
+    0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
+    0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
+    0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
+    0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
+    0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
+    0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
+    0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
+    0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
+    0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
+    0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
+    0x05, 0x25, 0x01, 0x01, 0x07,
+  };
+
+  uint8 data[] = {
+    0x09, 0x90, 0x45, 0x7f,
+    0x04, 0xf0, 0x00, 0x01,
+    0x49, 0x90, 0x88, 0x99,  // This data should be ignored (CN = 4).
+    0x05, 0xf7, 0x00, 0x00,
+  };
+  uint8 expected1[] = {
+    0x90, 0x45, 0x7f,
+  };
+  uint8 expected2[] = {
+    0xf0, 0x00, 0x01,
+  };
+  uint8 expected3[] = {
+    0xf7,
+  };
+  {
+    InSequence s;
+    EXPECT_CALL(*device, GetDescriptor())
+        .WillOnce(Return(ToVector(descriptor)));
+    EXPECT_CALL(*client, ReceiveMIDIData(0, ToVector(expected1), 0)).Times(1);
+    EXPECT_CALL(*client, ReceiveMIDIData(0, ToVector(expected2), 0)).Times(1);
+    EXPECT_CALL(*client, ReceiveMIDIData(0, ToVector(expected3), 0)).Times(1);
+  }
+
+  Initialize();
+  ScopedVector<UsbMidiDevice> devices;
+  UsbMidiDevice* device_raw = device.get();
+  devices.push_back(device.release());
+  EXPECT_FALSE(is_initialized_);
+  factory_->callback_.Run(true, &devices);
+  ASSERT_TRUE(is_initialized_);
+  ASSERT_TRUE(is_well_initialized_);
+
+  manager_->StartSession(client.get());
+  manager_->ReceiveUsbMidiData(device_raw, 2, data, arraysize(data), 0);
+  manager_->EndSession(client.get());
+}
+
+}  // namespace
+
+}  // namespace media