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| 1 // Copyright (c) 2010 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 <queue> |
| 6 |
| 7 #include "base/lock.h" |
| 8 #include "base/message_loop.h" |
| 9 #include "base/task.h" |
| 10 #include "chrome/browser/device_orientation/data_fetcher.h" |
| 11 #include "chrome/browser/device_orientation/orientation.h" |
| 12 #include "chrome/browser/device_orientation/provider.h" |
| 13 #include "chrome/browser/device_orientation/provider_impl.h" |
| 14 #include "testing/gtest/include/gtest/gtest.h" |
| 15 |
| 16 namespace device_orientation { |
| 17 namespace { |
| 18 |
| 19 // Class for checking expectations on orientation updates from the Provider. |
| 20 class UpdateChecker : public Provider::Observer { |
| 21 public: |
| 22 explicit UpdateChecker(int* expectations_count_ptr) |
| 23 : expectations_count_ptr_(expectations_count_ptr) { |
| 24 } |
| 25 |
| 26 // From Provider::Observer. |
| 27 virtual void OnOrientationUpdate(const Orientation& orientation) { |
| 28 ASSERT_FALSE(expectations_queue_.empty()); |
| 29 |
| 30 Orientation expected = expectations_queue_.front(); |
| 31 expectations_queue_.pop(); |
| 32 |
| 33 EXPECT_EQ(expected.can_provide_alpha_, orientation.can_provide_alpha_); |
| 34 EXPECT_EQ(expected.can_provide_beta_, orientation.can_provide_beta_); |
| 35 EXPECT_EQ(expected.can_provide_gamma_, orientation.can_provide_gamma_); |
| 36 if (expected.can_provide_alpha_) |
| 37 EXPECT_EQ(expected.alpha_, orientation.alpha_); |
| 38 if (expected.can_provide_beta_) |
| 39 EXPECT_EQ(expected.beta_, orientation.beta_); |
| 40 if (expected.can_provide_gamma_) |
| 41 EXPECT_EQ(expected.gamma_, orientation.gamma_); |
| 42 |
| 43 --(*expectations_count_ptr_); |
| 44 |
| 45 if (*expectations_count_ptr_ == 0) { |
| 46 MessageLoop::current()->PostTask(FROM_HERE, new MessageLoop::QuitTask()); |
| 47 } |
| 48 } |
| 49 |
| 50 void AddExpectation(const Orientation& orientation) { |
| 51 expectations_queue_.push(orientation); |
| 52 ++(*expectations_count_ptr_); |
| 53 } |
| 54 |
| 55 private: |
| 56 // Set up by the test fixture, which then blocks while it is accessed |
| 57 // from OnOrientationUpdate which is executed on the test fixture's |
| 58 // message_loop_. |
| 59 int* expectations_count_ptr_; |
| 60 std::queue<Orientation> expectations_queue_; |
| 61 }; |
| 62 |
| 63 // Class for injecting test orientation data into the Provider. |
| 64 class MockOrientationFactory : public base::RefCounted<MockOrientationFactory> { |
| 65 public: |
| 66 MockOrientationFactory() { |
| 67 EXPECT_FALSE(instance_); |
| 68 instance_ = this; |
| 69 } |
| 70 |
| 71 ~MockOrientationFactory() { |
| 72 instance_ = NULL; |
| 73 } |
| 74 |
| 75 static DataFetcher* CreateDataFetcher() { |
| 76 EXPECT_TRUE(instance_); |
| 77 return new MockDataFetcher(instance_); |
| 78 } |
| 79 |
| 80 void SetOrientation(const Orientation& orientation) { |
| 81 AutoLock auto_lock(lock_); |
| 82 orientation_ = orientation; |
| 83 } |
| 84 |
| 85 private: |
| 86 // Owned by ProviderImpl. Holds a reference back to MockOrientationFactory. |
| 87 class MockDataFetcher : public DataFetcher { |
| 88 public: |
| 89 explicit MockDataFetcher(MockOrientationFactory* orientation_factory) |
| 90 : orientation_factory_(orientation_factory) { } |
| 91 |
| 92 // From DataFetcher. Called by the Provider. |
| 93 virtual bool GetOrientation(Orientation* orientation) { |
| 94 AutoLock auto_lock(orientation_factory_->lock_); |
| 95 *orientation = orientation_factory_->orientation_; |
| 96 return true; |
| 97 } |
| 98 |
| 99 private: |
| 100 scoped_refptr<MockOrientationFactory> orientation_factory_; |
| 101 }; |
| 102 |
| 103 static MockOrientationFactory* instance_; |
| 104 Orientation orientation_; |
| 105 Lock lock_; |
| 106 }; |
| 107 |
| 108 MockOrientationFactory* MockOrientationFactory::instance_; |
| 109 |
| 110 // Mock DataFetcher that always fails to provide any orientation data. |
| 111 class FailingDataFetcher : public DataFetcher { |
| 112 public: |
| 113 // Factory method; passed to and called by the ProviderImpl. |
| 114 static DataFetcher* Create() { |
| 115 return new FailingDataFetcher(); |
| 116 } |
| 117 |
| 118 // From DataFetcher. |
| 119 virtual bool GetOrientation(Orientation* orientation) { |
| 120 return false; |
| 121 } |
| 122 |
| 123 private: |
| 124 FailingDataFetcher() {} |
| 125 }; |
| 126 |
| 127 class DeviceOrientationProviderTest : public testing::Test { |
| 128 public: |
| 129 DeviceOrientationProviderTest() { |
| 130 } |
| 131 |
| 132 // Initialize the test fixture with a ProviderImpl that uses the |
| 133 // DataFetcherFactories in the null-terminated factories array. |
| 134 void Init(ProviderImpl::DataFetcherFactory* factories) { |
| 135 provider_ = new ProviderImpl(&message_loop_, factories); |
| 136 Provider::SetInstanceForTests(provider_); |
| 137 } |
| 138 |
| 139 // Initialize the test fixture with a ProviderImpl that uses the |
| 140 // DataFetcherFactory factory. |
| 141 void Init(ProviderImpl::DataFetcherFactory factory) { |
| 142 ProviderImpl::DataFetcherFactory factories[] = { factory, NULL }; |
| 143 Init(factories); |
| 144 } |
| 145 |
| 146 void ScheduleAddObserver(Provider::Observer* observer) { |
| 147 Task* task = NewRunnableMethod(provider_.get(), &Provider::AddObserver, |
| 148 observer); |
| 149 message_loop_.PostTask(FROM_HERE, task); |
| 150 } |
| 151 |
| 152 void RemoveObserver(Provider::Observer* observer) { |
| 153 Task* task = NewRunnableMethod(provider_.get(), &Provider::RemoveObserver, |
| 154 observer); |
| 155 message_loop_.PostTask(FROM_HERE, task); |
| 156 message_loop_.PostTask(FROM_HERE, new MessageLoop::QuitTask()); |
| 157 message_loop_.Run(); |
| 158 } |
| 159 |
| 160 MessageLoop* message_loop() { |
| 161 return &message_loop_; |
| 162 } |
| 163 |
| 164 private: |
| 165 // Provider instance under test. |
| 166 scoped_refptr<Provider> provider_; |
| 167 |
| 168 // Message loop for adding or removing observers of the provider, and |
| 169 // receiving orientation updates. In non-test situations, this would |
| 170 // be the message loop of the IO thread. |
| 171 MessageLoop message_loop_; |
| 172 }; |
| 173 |
| 174 TEST_F(DeviceOrientationProviderTest, FailingTest) { |
| 175 Init(FailingDataFetcher::Create); |
| 176 int expectations_count = 0; |
| 177 |
| 178 scoped_ptr<UpdateChecker> checker_a(new UpdateChecker(&expectations_count)); |
| 179 scoped_ptr<UpdateChecker> checker_b(new UpdateChecker(&expectations_count)); |
| 180 |
| 181 checker_a->AddExpectation(Orientation::Empty()); |
| 182 ScheduleAddObserver(checker_a.get()); |
| 183 message_loop()->Run(); |
| 184 |
| 185 checker_b->AddExpectation(Orientation::Empty()); |
| 186 ScheduleAddObserver(checker_b.get()); |
| 187 message_loop()->Run(); |
| 188 } |
| 189 |
| 190 TEST_F(DeviceOrientationProviderTest, ProviderIsSingleton) { |
| 191 Init(FailingDataFetcher::Create); |
| 192 |
| 193 scoped_refptr<Provider> provider_a(Provider::GetInstance()); |
| 194 scoped_refptr<Provider> provider_b(Provider::GetInstance()); |
| 195 |
| 196 EXPECT_EQ(provider_a.get(), provider_b.get()); |
| 197 } |
| 198 |
| 199 TEST_F(DeviceOrientationProviderTest, BasicPushTest) { |
| 200 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 201 new MockOrientationFactory()); |
| 202 Init(MockOrientationFactory::CreateDataFetcher); |
| 203 int expectations_count = 0; |
| 204 const Orientation kTestOrientation(true, 1, true, 2, true, 3); |
| 205 |
| 206 scoped_ptr<UpdateChecker> checker(new UpdateChecker(&expectations_count)); |
| 207 checker->AddExpectation(kTestOrientation); |
| 208 orientation_factory->SetOrientation(kTestOrientation); |
| 209 ScheduleAddObserver(checker.get()); |
| 210 message_loop()->Run(); |
| 211 |
| 212 RemoveObserver(checker.get()); |
| 213 } |
| 214 |
| 215 TEST_F(DeviceOrientationProviderTest, MultipleObserversPushTest) { |
| 216 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 217 new MockOrientationFactory()); |
| 218 Init(MockOrientationFactory::CreateDataFetcher); |
| 219 int expectations_count = 0; |
| 220 const Orientation kTestOrientations[] = { |
| 221 Orientation(true, 1, true, 2, true, 3), |
| 222 Orientation(true, 4, true, 5, true, 6), |
| 223 Orientation(true, 7, true, 8, true, 9)}; |
| 224 |
| 225 scoped_ptr<UpdateChecker> checker_a(new UpdateChecker(&expectations_count)); |
| 226 scoped_ptr<UpdateChecker> checker_b(new UpdateChecker(&expectations_count)); |
| 227 scoped_ptr<UpdateChecker> checker_c(new UpdateChecker(&expectations_count)); |
| 228 |
| 229 checker_a->AddExpectation(kTestOrientations[0]); |
| 230 orientation_factory->SetOrientation(kTestOrientations[0]); |
| 231 ScheduleAddObserver(checker_a.get()); |
| 232 message_loop()->Run(); |
| 233 |
| 234 checker_a->AddExpectation(kTestOrientations[1]); |
| 235 checker_b->AddExpectation(kTestOrientations[0]); |
| 236 checker_b->AddExpectation(kTestOrientations[1]); |
| 237 orientation_factory->SetOrientation(kTestOrientations[1]); |
| 238 ScheduleAddObserver(checker_b.get()); |
| 239 message_loop()->Run(); |
| 240 |
| 241 RemoveObserver(checker_a.get()); |
| 242 checker_b->AddExpectation(kTestOrientations[2]); |
| 243 checker_c->AddExpectation(kTestOrientations[1]); |
| 244 checker_c->AddExpectation(kTestOrientations[2]); |
| 245 orientation_factory->SetOrientation(kTestOrientations[2]); |
| 246 ScheduleAddObserver(checker_c.get()); |
| 247 message_loop()->Run(); |
| 248 |
| 249 RemoveObserver(checker_b.get()); |
| 250 RemoveObserver(checker_c.get()); |
| 251 } |
| 252 |
| 253 TEST_F(DeviceOrientationProviderTest, ObserverNotRemoved) { |
| 254 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 255 new MockOrientationFactory()); |
| 256 Init(MockOrientationFactory::CreateDataFetcher); |
| 257 int expectations_count = 0; |
| 258 const Orientation kTestOrientation(true, 1, true, 2, true, 3); |
| 259 |
| 260 scoped_ptr<UpdateChecker> checker(new UpdateChecker(&expectations_count)); |
| 261 checker->AddExpectation(kTestOrientation); |
| 262 orientation_factory->SetOrientation(kTestOrientation); |
| 263 ScheduleAddObserver(checker.get()); |
| 264 message_loop()->Run(); |
| 265 |
| 266 // Note that checker is not removed. This should not be a problem. |
| 267 } |
| 268 |
| 269 TEST_F(DeviceOrientationProviderTest, StartFailing) { |
| 270 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 271 new MockOrientationFactory()); |
| 272 Init(MockOrientationFactory::CreateDataFetcher); |
| 273 int expectations_count = 0; |
| 274 const Orientation kTestOrientation(true, 1, true, 2, true, 3); |
| 275 |
| 276 scoped_ptr<UpdateChecker> checker_a(new UpdateChecker(&expectations_count)); |
| 277 scoped_ptr<UpdateChecker> checker_b(new UpdateChecker(&expectations_count)); |
| 278 |
| 279 orientation_factory->SetOrientation(kTestOrientation); |
| 280 checker_a->AddExpectation(kTestOrientation); |
| 281 ScheduleAddObserver(checker_a.get()); |
| 282 message_loop()->Run(); |
| 283 |
| 284 checker_a->AddExpectation(Orientation::Empty()); |
| 285 orientation_factory->SetOrientation(Orientation::Empty()); |
| 286 message_loop()->Run(); |
| 287 |
| 288 checker_b->AddExpectation(Orientation::Empty()); |
| 289 ScheduleAddObserver(checker_b.get()); |
| 290 message_loop()->Run(); |
| 291 |
| 292 RemoveObserver(checker_a.get()); |
| 293 RemoveObserver(checker_b.get()); |
| 294 } |
| 295 |
| 296 TEST_F(DeviceOrientationProviderTest, StartStopStart) { |
| 297 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 298 new MockOrientationFactory()); |
| 299 Init(MockOrientationFactory::CreateDataFetcher); |
| 300 int expectations_count = 0; |
| 301 const Orientation kTestOrientation(true, 1, true, 2, true, 3); |
| 302 const Orientation kTestOrientation2(true, 4, true, 5, true, 6); |
| 303 |
| 304 scoped_ptr<UpdateChecker> checker_a(new UpdateChecker(&expectations_count)); |
| 305 scoped_ptr<UpdateChecker> checker_b(new UpdateChecker(&expectations_count)); |
| 306 |
| 307 checker_a->AddExpectation(kTestOrientation); |
| 308 orientation_factory->SetOrientation(kTestOrientation); |
| 309 ScheduleAddObserver(checker_a.get()); |
| 310 message_loop()->Run(); |
| 311 |
| 312 RemoveObserver(checker_a.get()); // This stops the Provider. |
| 313 |
| 314 checker_b->AddExpectation(kTestOrientation2); |
| 315 orientation_factory->SetOrientation(kTestOrientation2); |
| 316 ScheduleAddObserver(checker_b.get()); |
| 317 message_loop()->Run(); |
| 318 RemoveObserver(checker_b.get()); |
| 319 } |
| 320 |
| 321 TEST_F(DeviceOrientationProviderTest, SignificantlyDifferent) { |
| 322 scoped_refptr<MockOrientationFactory> orientation_factory( |
| 323 new MockOrientationFactory()); |
| 324 Init(MockOrientationFactory::CreateDataFetcher); |
| 325 int expectations_count = 0; |
| 326 |
| 327 // Values that should be well below or above the implementation's |
| 328 // significane threshold. |
| 329 const double kInsignificantDifference = 1e-6; |
| 330 const double kSignificantDifference = 30; |
| 331 const double kAlpha = 4, kBeta = 5, kGamma = 6; |
| 332 |
| 333 const Orientation first_orientation(true, kAlpha, true, kBeta, true, kGamma); |
| 334 |
| 335 const Orientation second_orientation(true, kAlpha + kInsignificantDifference, |
| 336 true, kBeta + kInsignificantDifference, |
| 337 true, kGamma + kInsignificantDifference); |
| 338 |
| 339 const Orientation third_orientation(true, kAlpha + kSignificantDifference, |
| 340 true, kBeta + kSignificantDifference, |
| 341 true, kGamma + kSignificantDifference); |
| 342 |
| 343 scoped_ptr<UpdateChecker> checker_a(new UpdateChecker(&expectations_count)); |
| 344 scoped_ptr<UpdateChecker> checker_b(new UpdateChecker(&expectations_count)); |
| 345 |
| 346 |
| 347 orientation_factory->SetOrientation(first_orientation); |
| 348 checker_a->AddExpectation(first_orientation); |
| 349 ScheduleAddObserver(checker_a.get()); |
| 350 message_loop()->Run(); |
| 351 |
| 352 // The observers should not see this insignificantly different orientation. |
| 353 orientation_factory->SetOrientation(second_orientation); |
| 354 checker_b->AddExpectation(first_orientation); |
| 355 ScheduleAddObserver(checker_b.get()); |
| 356 message_loop()->Run(); |
| 357 |
| 358 orientation_factory->SetOrientation(third_orientation); |
| 359 checker_a->AddExpectation(third_orientation); |
| 360 checker_b->AddExpectation(third_orientation); |
| 361 message_loop()->Run(); |
| 362 |
| 363 RemoveObserver(checker_a.get()); |
| 364 RemoveObserver(checker_b.get()); |
| 365 } |
| 366 |
| 367 } // namespace |
| 368 |
| 369 } // namespace device_orientation |
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