components/proximity_auth/bluetooth_connection_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/proximity_auth/bluetooth_connection.h"
   6
   7 #include "base/message_loop/message_loop.h"
   8 #include "base/numerics/safe_conversions.h"
   9 #include "base/run_loop.h"
  10 #include "components/proximity_auth/remote_device.h"
  11 #include "components/proximity_auth/wire_message.h"
  12 #include "device/bluetooth/bluetooth_adapter_factory.h"
  13 #include "device/bluetooth/bluetooth_uuid.h"
  14 #include "device/bluetooth/test/mock_bluetooth_adapter.h"
  15 #include "device/bluetooth/test/mock_bluetooth_device.h"
  16 #include "device/bluetooth/test/mock_bluetooth_socket.h"
  17 #include "net/base/io_buffer.h"
  18 #include "testing/gmock/include/gmock/gmock.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 using testing::_;
  22 using testing::AnyNumber;
  23 using testing::NiceMock;
  24 using testing::Ref;
  25 using testing::Return;
  26 using testing::SaveArg;
  27 using testing::StrictMock;
  28
  29 namespace proximity_auth {
  30 namespace {
  31
  32 const char kDeviceName[] = "Device name";
  33 const char kOtherDeviceName[] = "Other device name";
  34
  35 const char kBluetoothAddress[] = "11:22:33:44:55:66";
  36 const char kOtherBluetoothAddress[] = "AA:BB:CC:DD:EE:FF";
  37
  38 const char kSerializedMessage[] = "Yarrr, this be a serialized message. Yarr!";
  39 const int kSerializedMessageLength = strlen(kSerializedMessage);
  40
  41 const char kUuid[] = "DEADBEEF-CAFE-FEED-FOOD-D15EA5EBEEF";
  42
  43 const RemoteDevice kRemoteDevice = {kDeviceName, kBluetoothAddress};
  44
  45 const int kReceiveBufferSize = 6;
  46 const char kReceiveBufferContents[] = "bytes";
  47
  48 // Create a buffer for testing received data.
  49 scoped_refptr<net::IOBuffer> CreateReceiveBuffer() {
  50   scoped_refptr<net::IOBuffer> buffer = new net::IOBuffer(kReceiveBufferSize);
  51   memcpy(buffer->data(), kReceiveBufferContents, kReceiveBufferSize);
  52   return buffer;
  53 }
  54
  55 class MockBluetoothConnection : public BluetoothConnection {
  56  public:
  57   MockBluetoothConnection()
  58       : BluetoothConnection(kRemoteDevice, device::BluetoothUUID(kUuid)) {}
  59
  60   // Calls back into the parent Connection class.
  61   MOCK_METHOD1(SetStatusProxy, void(Status status));
  62   MOCK_METHOD1(OnBytesReceived, void(const std::string& bytes));
  63   MOCK_METHOD2(OnDidSendMessage,
  64                void(const WireMessage& message, bool success));
  65
  66   virtual void SetStatus(Status status) override {
  67     SetStatusProxy(status);
  68     BluetoothConnection::SetStatus(status);
  69   }
  70
  71   using BluetoothConnection::status;
  72   using BluetoothConnection::Connect;
  73   using BluetoothConnection::DeviceRemoved;
  74   using BluetoothConnection::Disconnect;
  75
  76  private:
  77   DISALLOW_COPY_AND_ASSIGN(MockBluetoothConnection);
  78 };
  79
  80 class TestWireMessage : public WireMessage {
  81  public:
  82   TestWireMessage() : WireMessage("permit id", "payload") {}
  83   ~TestWireMessage() override {}
  84
  85   std::string Serialize() const override { return kSerializedMessage; }
  86
  87  private:
  88   DISALLOW_COPY_AND_ASSIGN(TestWireMessage);
  89 };
  90
  91 }  // namespace
  92
  93 class ProximityAuthBluetoothConnectionTest : public testing::Test {
  94  public:
  95   ProximityAuthBluetoothConnectionTest()
  96       : adapter_(new device::MockBluetoothAdapter),
  97         device_(adapter_.get(), 0, kDeviceName, kBluetoothAddress, true, true),
  98         socket_(new StrictMock<device::MockBluetoothSocket>),
  99         uuid_(kUuid) {
 100     device::BluetoothAdapterFactory::SetAdapterForTesting(adapter_);
 101
 102     // Suppress uninteresting Gmock call warnings.
 103     EXPECT_CALL(*adapter_, GetDevice(_)).Times(AnyNumber());
 104   }
 105
 106   // Transition the connection into an in-progress state.
 107   void BeginConnecting(MockBluetoothConnection* connection) {
 108     EXPECT_EQ(Connection::DISCONNECTED, connection->status());
 109
 110     ON_CALL(*adapter_, GetDevice(_)).WillByDefault(Return(&device_));
 111     EXPECT_CALL(*connection, SetStatusProxy(Connection::IN_PROGRESS));
 112     EXPECT_CALL(*adapter_, AddObserver(connection));
 113     EXPECT_CALL(device_, ConnectToServiceInsecurely(uuid_, _, _));
 114     connection->Connect();
 115
 116     EXPECT_EQ(Connection::IN_PROGRESS, connection->status());
 117   }
 118
 119   // Transition the connection into a connected state.
 120   // Saves the success and error callbacks passed into OnReceive(), which can be
 121   // accessed via receive_callback() and receive_success_callback().
 122   void Connect(MockBluetoothConnection* connection) {
 123     EXPECT_EQ(Connection::DISCONNECTED, connection->status());
 124
 125     device::BluetoothDevice::ConnectToServiceCallback callback;
 126     ON_CALL(*adapter_, GetDevice(_)).WillByDefault(Return(&device_));
 127     EXPECT_CALL(*connection, SetStatusProxy(Connection::IN_PROGRESS));
 128     EXPECT_CALL(*adapter_, AddObserver(connection));
 129     EXPECT_CALL(device_, ConnectToServiceInsecurely(_, _, _))
 130         .WillOnce(SaveArg<1>(&callback));
 131     connection->Connect();
 132     ASSERT_FALSE(callback.is_null());
 133
 134     EXPECT_CALL(*connection, SetStatusProxy(Connection::CONNECTED));
 135     EXPECT_CALL(*socket_, Receive(_, _, _))
 136         .WillOnce(DoAll(SaveArg<1>(&receive_callback_),
 137                         SaveArg<2>(&receive_error_callback_)));
 138     callback.Run(socket_);
 139
 140     EXPECT_EQ(Connection::CONNECTED, connection->status());
 141   }
 142
 143   device::BluetoothSocket::ReceiveCompletionCallback* receive_callback() {
 144     return &receive_callback_;
 145   }
 146   device::BluetoothSocket::ReceiveErrorCompletionCallback*
 147   receive_error_callback() {
 148     return &receive_error_callback_;
 149   }
 150
 151  protected:
 152   // Mocks used for verifying interactions with the Bluetooth subsystem.
 153   scoped_refptr<device::MockBluetoothAdapter> adapter_;
 154   NiceMock<device::MockBluetoothDevice> device_;
 155   scoped_refptr<StrictMock<device::MockBluetoothSocket>> socket_;
 156
 157   device::BluetoothUUID uuid_;
 158
 159  private:
 160   base::MessageLoop message_loop_;
 161
 162   device::BluetoothSocket::ReceiveCompletionCallback receive_callback_;
 163   device::BluetoothSocket::ReceiveErrorCompletionCallback
 164       receive_error_callback_;
 165 };
 166
 167 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_ConnectionWasInProgress) {
 168   // Create an in-progress connection.
 169   StrictMock<MockBluetoothConnection> connection;
 170   BeginConnecting(&connection);
 171
 172   // A second call to Connect() should be ignored.
 173   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 174   connection.Connect();
 175
 176   // The connection cleans up after itself upon destruction.
 177   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 178 }
 179
 180 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_ConnectionWasConnected) {
 181   // Create a connected connection.
 182   StrictMock<MockBluetoothConnection> connection;
 183   Connect(&connection);
 184
 185   // A second call to Connect() should be ignored.
 186   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 187   connection.Connect();
 188
 189   // The connection disconnects and unregisters as an observer upon destruction.
 190   EXPECT_CALL(*socket_, Disconnect(_));
 191   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 192 }
 193
 194 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_NoBluetoothAdapter) {
 195   // Some platforms do not support Bluetooth. This test is only meaningful on
 196   // those platforms.
 197   adapter_ = NULL;
 198   if (device::BluetoothAdapterFactory::IsBluetoothAdapterAvailable())
 199     return;
 200
 201   StrictMock<MockBluetoothConnection> connection;
 202   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 203   connection.Connect();
 204 }
 205
 206 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_DeviceMissing) {
 207   StrictMock<MockBluetoothConnection> connection;
 208
 209   ON_CALL(*adapter_, GetDevice(_))
 210       .WillByDefault(Return(static_cast<device::BluetoothDevice*>(NULL)));
 211   EXPECT_CALL(connection, SetStatusProxy(Connection::IN_PROGRESS));
 212   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 213   connection.Connect();
 214 }
 215
 216 TEST_F(ProximityAuthBluetoothConnectionTest,
 217        Connect_DeviceRemovedWhileConnecting) {
 218   // Create an in-progress connection.
 219   StrictMock<MockBluetoothConnection> connection;
 220   BeginConnecting(&connection);
 221
 222   // Remove the device while the connection is in-progress. This should cause
 223   // the connection to disconnect.
 224   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 225   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 226   connection.DeviceRemoved(adapter_.get(), &device_);
 227 }
 228
 229 TEST_F(ProximityAuthBluetoothConnectionTest,
 230        Connect_OtherDeviceRemovedWhileConnecting) {
 231   // Create an in-progress connection.
 232   StrictMock<MockBluetoothConnection> connection;
 233   BeginConnecting(&connection);
 234
 235   // Remove a device other than the one that is being connected to. This should
 236   // not have any effect on the connection.
 237   NiceMock<device::MockBluetoothDevice> other_device(
 238       adapter_.get(), 0, kOtherDeviceName, kOtherBluetoothAddress, true, true);
 239   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 240   connection.DeviceRemoved(adapter_.get(), &other_device);
 241
 242   // The connection removes itself as an observer when it is destroyed.
 243   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 244 }
 245
 246 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_ConnectionFails) {
 247   StrictMock<MockBluetoothConnection> connection;
 248
 249   device::BluetoothDevice::ConnectToServiceErrorCallback error_callback;
 250   ON_CALL(*adapter_, GetDevice(_)).WillByDefault(Return(&device_));
 251   EXPECT_CALL(connection, SetStatusProxy(Connection::IN_PROGRESS));
 252   EXPECT_CALL(*adapter_, AddObserver(&connection));
 253   EXPECT_CALL(device_, ConnectToServiceInsecurely(uuid_, _, _))
 254       .WillOnce(SaveArg<2>(&error_callback));
 255   connection.Connect();
 256   ASSERT_FALSE(error_callback.is_null());
 257
 258   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 259   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 260   error_callback.Run("super descriptive error message");
 261 }
 262
 263 TEST_F(ProximityAuthBluetoothConnectionTest, Connect_ConnectionSucceeds) {
 264   StrictMock<MockBluetoothConnection> connection;
 265   Connect(&connection);
 266
 267   // The connection disconnects and unregisters as an observer upon destruction.
 268   EXPECT_CALL(*socket_, Disconnect(_));
 269   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 270 }
 271
 272 TEST_F(ProximityAuthBluetoothConnectionTest,
 273        Connect_ConnectionSucceeds_ThenDeviceRemoved) {
 274   StrictMock<MockBluetoothConnection> connection;
 275   Connect(&connection);
 276
 277   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 278   EXPECT_CALL(*socket_, Disconnect(_));
 279   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 280   connection.DeviceRemoved(adapter_.get(), &device_);
 281 }
 282
 283 TEST_F(ProximityAuthBluetoothConnectionTest,
 284        Connect_ConnectionSucceeds_ReceiveData) {
 285   StrictMock<MockBluetoothConnection> connection;
 286   Connect(&connection);
 287   ASSERT_TRUE(receive_callback() && !receive_callback()->is_null());
 288
 289   // Receive some data. Once complete, the connection should re-register to be
 290   // ready receive more data.
 291   scoped_refptr<net::IOBuffer> buffer = CreateReceiveBuffer();
 292   EXPECT_CALL(
 293       connection,
 294       OnBytesReceived(std::string(kReceiveBufferContents, kReceiveBufferSize)));
 295   EXPECT_CALL(*socket_, Receive(_, _, _));
 296   receive_callback()->Run(kReceiveBufferSize, buffer);
 297   base::RunLoop run_loop;
 298   run_loop.RunUntilIdle();
 299
 300   // The connection disconnects and unregisters as an observer upon destruction.
 301   EXPECT_CALL(*socket_, Disconnect(_));
 302   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 303 }
 304
 305 TEST_F(ProximityAuthBluetoothConnectionTest,
 306        Connect_ConnectionSucceeds_ReceiveDataAfterReceiveError) {
 307   StrictMock<MockBluetoothConnection> connection;
 308   Connect(&connection);
 309   ASSERT_TRUE(receive_error_callback() && !receive_error_callback()->is_null());
 310
 311   // Simulate an error while receiving data. The connection should re-register
 312   // to be ready receive more data despite the error.
 313   device::BluetoothSocket::ReceiveCompletionCallback receive_callback;
 314   EXPECT_CALL(*socket_, Receive(_, _, _))
 315       .WillOnce(SaveArg<1>(&receive_callback));
 316   receive_error_callback()->Run(device::BluetoothSocket::kSystemError,
 317                                 "The system is down. They're taking over!");
 318   base::RunLoop run_loop;
 319   run_loop.RunUntilIdle();
 320   ASSERT_FALSE(receive_callback.is_null());
 321
 322   // Receive some data.
 323   scoped_refptr<net::IOBuffer> buffer = CreateReceiveBuffer();
 324   EXPECT_CALL(
 325       connection,
 326       OnBytesReceived(std::string(kReceiveBufferContents, kReceiveBufferSize)));
 327   EXPECT_CALL(*socket_, Receive(_, _, _));
 328   receive_callback.Run(kReceiveBufferSize, buffer);
 329   base::RunLoop run_loop2;
 330   run_loop2.RunUntilIdle();
 331
 332   // The connection disconnects and unregisters as an observer upon destruction.
 333   EXPECT_CALL(*socket_, Disconnect(_));
 334   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 335 }
 336
 337 TEST_F(ProximityAuthBluetoothConnectionTest,
 338        Disconnect_ConnectionWasAlreadyDisconnected) {
 339   StrictMock<MockBluetoothConnection> connection;
 340   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 341   connection.Disconnect();
 342 }
 343
 344 TEST_F(ProximityAuthBluetoothConnectionTest,
 345        Disconnect_ConnectionWasInProgress) {
 346   // Create an in-progress connection.
 347   StrictMock<MockBluetoothConnection> connection;
 348   BeginConnecting(&connection);
 349
 350   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 351   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 352   connection.Disconnect();
 353 }
 354
 355 TEST_F(ProximityAuthBluetoothConnectionTest,
 356        Disconnect_ConnectionWasConnected) {
 357   // Create a connected connection.
 358   StrictMock<MockBluetoothConnection> connection;
 359   Connect(&connection);
 360
 361   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 362   EXPECT_CALL(*socket_, Disconnect(_));
 363   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 364   connection.Disconnect();
 365 }
 366
 367 TEST_F(ProximityAuthBluetoothConnectionTest,
 368        Connect_ThenDisconnectWhileInProgress_ThenBackingConnectionSucceeds) {
 369   StrictMock<MockBluetoothConnection> connection;
 370   device::BluetoothDevice::ConnectToServiceCallback callback;
 371   ON_CALL(*adapter_, GetDevice(_)).WillByDefault(Return(&device_));
 372   EXPECT_CALL(connection, SetStatusProxy(Connection::IN_PROGRESS));
 373   EXPECT_CALL(*adapter_, AddObserver(&connection));
 374   EXPECT_CALL(device_, ConnectToServiceInsecurely(uuid_, _, _))
 375       .WillOnce(SaveArg<1>(&callback));
 376   connection.Connect();
 377   ASSERT_FALSE(callback.is_null());
 378
 379   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 380   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 381   connection.Disconnect();
 382
 383   EXPECT_CALL(connection, SetStatusProxy(_)).Times(0);
 384   EXPECT_CALL(*socket_, Receive(_, _, _)).Times(0);
 385   callback.Run(socket_);
 386 }
 387
 388 TEST_F(ProximityAuthBluetoothConnectionTest,
 389        SendMessage_SendsExpectedDataOverTheWire) {
 390   // Create a connected connection.
 391   StrictMock<MockBluetoothConnection> connection;
 392   Connect(&connection);
 393
 394   scoped_refptr<net::IOBuffer> buffer;
 395   scoped_ptr<TestWireMessage> wire_message(new TestWireMessage);
 396   EXPECT_CALL(*socket_, Send(_, kSerializedMessageLength, _, _))
 397       .WillOnce(SaveArg<0>(&buffer));
 398   connection.SendMessage(wire_message.Pass());
 399   ASSERT_TRUE(buffer.get());
 400   EXPECT_EQ(kSerializedMessage,
 401             std::string(buffer->data(), kSerializedMessageLength));
 402
 403   // The connection disconnects and unregisters as an observer upon destruction.
 404   EXPECT_CALL(*socket_, Disconnect(_));
 405   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 406 }
 407
 408 TEST_F(ProximityAuthBluetoothConnectionTest, SendMessage_Success) {
 409   // Create a connected connection.
 410   StrictMock<MockBluetoothConnection> connection;
 411   Connect(&connection);
 412
 413   scoped_ptr<TestWireMessage> wire_message(new TestWireMessage);
 414   // Ownership will be transfered below, so grab a reference here.
 415   TestWireMessage* expected_wire_message = wire_message.get();
 416
 417   device::BluetoothSocket::SendCompletionCallback callback;
 418   EXPECT_CALL(*socket_, Send(_, _, _, _)).WillOnce(SaveArg<2>(&callback));
 419   connection.SendMessage(wire_message.Pass());
 420   ASSERT_FALSE(callback.is_null());
 421
 422   EXPECT_CALL(connection, OnDidSendMessage(Ref(*expected_wire_message), true));
 423   callback.Run(kSerializedMessageLength);
 424
 425   // The connection disconnects and unregisters as an observer upon destruction.
 426   EXPECT_CALL(*socket_, Disconnect(_));
 427   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 428 }
 429
 430 TEST_F(ProximityAuthBluetoothConnectionTest, SendMessage_Failure) {
 431   // Create a connected connection.
 432   StrictMock<MockBluetoothConnection> connection;
 433   Connect(&connection);
 434
 435   scoped_ptr<TestWireMessage> wire_message(new TestWireMessage);
 436   // Ownership will be transfered below, so grab a reference here.
 437   TestWireMessage* expected_wire_message = wire_message.get();
 438
 439   device::BluetoothSocket::ErrorCompletionCallback error_callback;
 440   EXPECT_CALL(*socket_, Send(_, _, _, _)).WillOnce(SaveArg<3>(&error_callback));
 441   connection.SendMessage(wire_message.Pass());
 442
 443   ASSERT_FALSE(error_callback.is_null());
 444   EXPECT_CALL(connection, OnDidSendMessage(Ref(*expected_wire_message), false));
 445   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
 446   EXPECT_CALL(*socket_, Disconnect(_));
 447   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
 448   error_callback.Run("The most helpful of error messages");
 449 }
 450
 451 }  // namespace proximity_auth