src/content/browser/quota/storage_monitor_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 <vector>
   6
   7 #include "base/files/scoped_temp_dir.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "base/run_loop.h"
  11 #include "content/public/test/mock_special_storage_policy.h"
  12 #include "content/public/test/mock_storage_client.h"
  13 #include "net/base/net_util.h"
  14 #include "storage/browser/quota/quota_manager.h"
  15 #include "storage/browser/quota/quota_manager_proxy.h"
  16 #include "storage/browser/quota/storage_monitor.h"
  17 #include "storage/browser/quota/storage_observer.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19
  20 using storage::HostStorageObservers;
  21 using storage::kQuotaErrorNotSupported;
  22 using storage::kQuotaStatusOk;
  23 using storage::kStorageTypePersistent;
  24 using storage::kStorageTypeTemporary;
  25 using storage::QuotaClient;
  26 using storage::QuotaManager;
  27 using storage::QuotaStatusCode;
  28 using storage::SpecialStoragePolicy;
  29 using storage::StorageMonitor;
  30 using storage::StorageObserver;
  31 using storage::StorageObserverList;
  32 using storage::StorageType;
  33 using storage::StorageTypeObservers;
  34
  35 namespace content {
  36
  37 namespace {
  38
  39 const char kDefaultOrigin[] = "http://www.foo.com/";
  40 const char kAlternativeOrigin[] = "http://www.bar.com/";
  41
  42 class MockObserver : public StorageObserver {
  43  public:
  44   const StorageObserver::Event& LastEvent() const {
  45     CHECK(!events_.empty());
  46     return events_.back();
  47   }
  48
  49   int EventCount() const {
  50     return events_.size();
  51   }
  52
  53   // StorageObserver implementation:
  54   virtual void OnStorageEvent(const StorageObserver::Event& event) OVERRIDE {
  55     events_.push_back(event);
  56   }
  57
  58  private:
  59   std::vector<StorageObserver::Event> events_;
  60 };
  61
  62 // A mock quota manager for overriding GetUsageAndQuotaForWebApps().
  63 class UsageMockQuotaManager : public QuotaManager {
  64  public:
  65   UsageMockQuotaManager(SpecialStoragePolicy* special_storage_policy)
  66       : QuotaManager(
  67             false,
  68             base::FilePath(),
  69             base::MessageLoopProxy::current().get(),
  70             base::MessageLoopProxy::current().get(),
  71             special_storage_policy),
  72         callback_usage_(0),
  73         callback_quota_(0),
  74         callback_status_(kQuotaStatusOk),
  75         initialized_(false) {
  76   }
  77
  78   void SetCallbackParams(int64 usage, int64 quota, QuotaStatusCode status) {
  79     initialized_ = true;
  80     callback_quota_ = quota;
  81     callback_usage_ = usage;
  82     callback_status_ = status;
  83   }
  84
  85   void InvokeCallback() {
  86     delayed_callback_.Run(callback_status_, callback_usage_, callback_quota_);
  87   }
  88
  89   virtual void GetUsageAndQuotaForWebApps(
  90       const GURL& origin,
  91       StorageType type,
  92       const GetUsageAndQuotaCallback& callback) OVERRIDE {
  93     if (initialized_)
  94       callback.Run(callback_status_, callback_usage_, callback_quota_);
  95     else
  96       delayed_callback_ = callback;
  97   }
  98
  99  protected:
 100   virtual ~UsageMockQuotaManager() {}
 101
 102  private:
 103   int64 callback_usage_;
 104   int64 callback_quota_;
 105   QuotaStatusCode callback_status_;
 106   bool initialized_;
 107   GetUsageAndQuotaCallback delayed_callback_;
 108 };
 109
 110 }  // namespace
 111
 112 class StorageMonitorTestBase : public testing::Test {
 113  protected:
 114   void DispatchPendingEvents(StorageObserverList& observer_list) {
 115     observer_list.DispatchPendingEvent();
 116   }
 117
 118   const StorageObserver::Event* GetPendingEvent(
 119       const StorageObserverList& observer_list) {
 120     return observer_list.notification_timer_.IsRunning()
 121                 ? &observer_list.pending_event_ : NULL;
 122   }
 123
 124   const StorageObserver::Event* GetPendingEvent(
 125       const HostStorageObservers& host_observers) {
 126     return GetPendingEvent(host_observers.observers_);
 127   }
 128
 129   int GetRequiredUpdatesCount(const StorageObserverList& observer_list) {
 130     int count = 0;
 131     for (StorageObserverList::StorageObserverStateMap::const_iterator it =
 132             observer_list.observers_.begin();
 133          it != observer_list.observers_.end(); ++it) {
 134       if (it->second.requires_update)
 135         ++count;
 136     }
 137
 138     return count;
 139   }
 140
 141   int GetRequiredUpdatesCount(const HostStorageObservers& host_observers) {
 142     return GetRequiredUpdatesCount(host_observers.observers_);
 143   }
 144
 145   void SetLastNotificationTime(StorageObserverList& observer_list,
 146                                StorageObserver* observer) {
 147     ASSERT_TRUE(observer_list.observers_.find(observer) !=
 148                 observer_list.observers_.end());
 149
 150     StorageObserverList::ObserverState& state =
 151         observer_list.observers_[observer];
 152     state.last_notification_time = base::TimeTicks::Now() - state.rate;
 153   }
 154
 155   void SetLastNotificationTime(HostStorageObservers& host_observers,
 156                                StorageObserver* observer) {
 157     SetLastNotificationTime(host_observers.observers_, observer);
 158   }
 159
 160   int GetObserverCount(const HostStorageObservers& host_observers) {
 161     return host_observers.observers_.ObserverCount();
 162   }
 163 };
 164
 165 class StorageTestWithManagerBase : public StorageMonitorTestBase {
 166  public:
 167   virtual void SetUp() OVERRIDE {
 168     storage_policy_ = new MockSpecialStoragePolicy();
 169     quota_manager_ = new UsageMockQuotaManager(storage_policy_.get());
 170   }
 171
 172   virtual void TearDown() OVERRIDE {
 173     // This ensures the quota manager is destroyed correctly.
 174     quota_manager_ = NULL;
 175     base::RunLoop().RunUntilIdle();
 176   }
 177
 178  protected:
 179   base::MessageLoop message_loop_;
 180   scoped_refptr<MockSpecialStoragePolicy> storage_policy_;
 181   scoped_refptr<UsageMockQuotaManager> quota_manager_;
 182 };
 183
 184 // Tests for StorageObserverList:
 185
 186 typedef StorageMonitorTestBase StorageObserverListTest;
 187
 188 // Test dispatching events to one observer.
 189 TEST_F(StorageObserverListTest, DispatchEventToSingleObserver) {
 190   // A message loop is required as StorageObserverList may schedule jobs.
 191   base::MessageLoop loop(base::MessageLoop::TYPE_DEFAULT);
 192
 193   StorageObserver::MonitorParams params(kStorageTypePersistent,
 194                                         GURL(kDefaultOrigin),
 195                                         base::TimeDelta::FromHours(1),
 196                                         false);
 197   MockObserver mock_observer;
 198   StorageObserverList observer_list;
 199   observer_list.AddObserver(&mock_observer, params);
 200
 201   StorageObserver::Event event;
 202   event.filter = params.filter;
 203
 204   // Verify that the first event is dispatched immediately.
 205   event.quota = 1;
 206   event.usage = 1;
 207   observer_list.OnStorageChange(event);
 208   EXPECT_EQ(1, mock_observer.EventCount());
 209   EXPECT_EQ(event, mock_observer.LastEvent());
 210   EXPECT_EQ(NULL, GetPendingEvent(observer_list));
 211   EXPECT_EQ(0, GetRequiredUpdatesCount(observer_list));
 212
 213   // Verify that the next event is pending.
 214   event.quota = 2;
 215   event.usage = 2;
 216   observer_list.OnStorageChange(event);
 217   EXPECT_EQ(1, mock_observer.EventCount());
 218   ASSERT_TRUE(GetPendingEvent(observer_list));
 219   EXPECT_EQ(event, *GetPendingEvent(observer_list));
 220   EXPECT_EQ(1, GetRequiredUpdatesCount(observer_list));
 221
 222   // Fake the last notification time so that an event will be dispatched.
 223   SetLastNotificationTime(observer_list, &mock_observer);
 224   event.quota = 3;
 225   event.usage = 3;
 226   observer_list.OnStorageChange(event);
 227   EXPECT_EQ(2, mock_observer.EventCount());
 228   EXPECT_EQ(event, mock_observer.LastEvent());
 229   EXPECT_EQ(NULL, GetPendingEvent(observer_list));
 230   EXPECT_EQ(0, GetRequiredUpdatesCount(observer_list));
 231
 232   // Remove the observer.
 233   event.quota = 4;
 234   event.usage = 4;
 235   observer_list.RemoveObserver(&mock_observer);
 236   observer_list.OnStorageChange(event);
 237   EXPECT_EQ(2, mock_observer.EventCount());
 238   EXPECT_EQ(NULL, GetPendingEvent(observer_list));
 239 }
 240
 241 // Test dispatching events to multiple observers.
 242 TEST_F(StorageObserverListTest, DispatchEventToMultipleObservers) {
 243   // A message loop is required as StorageObserverList may schedule jobs.
 244   base::MessageLoop loop(base::MessageLoop::TYPE_DEFAULT);
 245
 246   MockObserver mock_observer1;
 247   MockObserver mock_observer2;
 248   StorageObserverList observer_list;
 249   StorageObserver::Filter filter(kStorageTypePersistent,
 250                                  GURL(kDefaultOrigin));
 251   observer_list.AddObserver(
 252       &mock_observer1,
 253       StorageObserver::MonitorParams(
 254           filter, base::TimeDelta::FromHours(1), false));
 255   observer_list.AddObserver(
 256       &mock_observer2,
 257       StorageObserver::MonitorParams(
 258           filter, base::TimeDelta::FromHours(2), false));
 259
 260   StorageObserver::Event event;
 261   event.filter = filter;
 262
 263   // Verify that the first event is dispatched immediately.
 264   event.quota = 1;
 265   event.usage = 1;
 266   observer_list.OnStorageChange(event);
 267   EXPECT_EQ(1, mock_observer1.EventCount());
 268   EXPECT_EQ(1, mock_observer2.EventCount());
 269   EXPECT_EQ(event, mock_observer1.LastEvent());
 270   EXPECT_EQ(event, mock_observer2.LastEvent());
 271   EXPECT_EQ(NULL, GetPendingEvent(observer_list));
 272   EXPECT_EQ(0, GetRequiredUpdatesCount(observer_list));
 273
 274   // Fake the last notification time so that observer1 will receive the next
 275   // event, but it will be pending for observer2.
 276   SetLastNotificationTime(observer_list, &mock_observer1);
 277   event.quota = 2;
 278   event.usage = 2;
 279   observer_list.OnStorageChange(event);
 280   EXPECT_EQ(2, mock_observer1.EventCount());
 281   EXPECT_EQ(1, mock_observer2.EventCount());
 282   EXPECT_EQ(event, mock_observer1.LastEvent());
 283   ASSERT_TRUE(GetPendingEvent(observer_list));
 284   EXPECT_EQ(event, *GetPendingEvent(observer_list));
 285   EXPECT_EQ(1, GetRequiredUpdatesCount(observer_list));
 286
 287   // Now dispatch the pending event to observer2.
 288   SetLastNotificationTime(observer_list, &mock_observer2);
 289   DispatchPendingEvents(observer_list);
 290   EXPECT_EQ(2, mock_observer1.EventCount());
 291   EXPECT_EQ(2, mock_observer2.EventCount());
 292   EXPECT_EQ(event, mock_observer1.LastEvent());
 293   EXPECT_EQ(event, mock_observer2.LastEvent());
 294   EXPECT_EQ(NULL, GetPendingEvent(observer_list));
 295   EXPECT_EQ(0, GetRequiredUpdatesCount(observer_list));
 296 }
 297
 298 // Ensure that the |origin| field in events match the origin specified by the
 299 // observer on registration.
 300 TEST_F(StorageObserverListTest, ReplaceEventOrigin) {
 301   StorageObserver::MonitorParams params(kStorageTypePersistent,
 302                                         GURL(kDefaultOrigin),
 303                                         base::TimeDelta::FromHours(1),
 304                                         false);
 305   MockObserver mock_observer;
 306   StorageObserverList observer_list;
 307   observer_list.AddObserver(&mock_observer, params);
 308
 309   StorageObserver::Event dispatched_event;
 310   dispatched_event.filter = params.filter;
 311   dispatched_event.filter.origin = GURL("https://www.foo.com/bar");
 312   observer_list.OnStorageChange(dispatched_event);
 313
 314   EXPECT_EQ(params.filter.origin, mock_observer.LastEvent().filter.origin);
 315 }
 316
 317 // Tests for HostStorageObservers:
 318
 319 typedef StorageTestWithManagerBase HostStorageObserversTest;
 320
 321 // Verify that HostStorageObservers is initialized after the first usage change.
 322 TEST_F(HostStorageObserversTest, InitializeOnUsageChange) {
 323   StorageObserver::MonitorParams params(kStorageTypePersistent,
 324                                         GURL(kDefaultOrigin),
 325                                         base::TimeDelta::FromHours(1),
 326                                         false);
 327   const int64 kUsage = 324554;
 328   const int64 kQuota = 234354354;
 329   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 330
 331   MockObserver mock_observer;
 332   HostStorageObservers host_observers(quota_manager_.get());
 333   host_observers.AddObserver(&mock_observer, params);
 334
 335   // Verify that HostStorageObservers dispatches the first event correctly.
 336   StorageObserver::Event expected_event(params.filter, kUsage, kQuota);
 337   host_observers.NotifyUsageChange(params.filter, 87324);
 338   EXPECT_EQ(1, mock_observer.EventCount());
 339   EXPECT_EQ(expected_event, mock_observer.LastEvent());
 340   EXPECT_TRUE(host_observers.is_initialized());
 341
 342   // Verify that HostStorageObservers handles subsequent usage changes
 343   // correctly.
 344   const int64 kDelta = 2345;
 345   expected_event.usage += kDelta;
 346   SetLastNotificationTime(host_observers, &mock_observer);
 347   host_observers.NotifyUsageChange(params.filter, kDelta);
 348   EXPECT_EQ(2, mock_observer.EventCount());
 349   EXPECT_EQ(expected_event, mock_observer.LastEvent());
 350 }
 351
 352 // Verify that HostStorageObservers is initialized after the adding the first
 353 // observer that elected to receive the initial state.
 354 TEST_F(HostStorageObserversTest, InitializeOnObserver) {
 355   const int64 kUsage = 74387;
 356   const int64 kQuota = 92834743;
 357   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 358   HostStorageObservers host_observers(quota_manager_.get());
 359
 360   // |host_observers| should not be initialized after the first observer is
 361   // added because it did not elect to receive the initial state.
 362   StorageObserver::MonitorParams params(kStorageTypePersistent,
 363                                         GURL(kDefaultOrigin),
 364                                         base::TimeDelta::FromHours(1),
 365                                         false);
 366   MockObserver mock_observer1;
 367   host_observers.AddObserver(&mock_observer1, params);
 368   EXPECT_FALSE(host_observers.is_initialized());
 369   EXPECT_EQ(0, mock_observer1.EventCount());
 370
 371   // |host_observers| should be initialized after the second observer is
 372   // added.
 373   MockObserver mock_observer2;
 374   params.dispatch_initial_state = true;
 375   host_observers.AddObserver(&mock_observer2, params);
 376   StorageObserver::Event expected_event(params.filter, kUsage, kQuota);
 377   EXPECT_EQ(0, mock_observer1.EventCount());
 378   EXPECT_EQ(1, mock_observer2.EventCount());
 379   EXPECT_EQ(expected_event, mock_observer2.LastEvent());
 380   EXPECT_TRUE(host_observers.is_initialized());
 381   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 382   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 383
 384   // Verify that both observers will receive events after a usage change.
 385   const int64 kDelta = 2345;
 386   expected_event.usage += kDelta;
 387   SetLastNotificationTime(host_observers, &mock_observer2);
 388   host_observers.NotifyUsageChange(params.filter, kDelta);
 389   EXPECT_EQ(1, mock_observer1.EventCount());
 390   EXPECT_EQ(2, mock_observer2.EventCount());
 391   EXPECT_EQ(expected_event, mock_observer1.LastEvent());
 392   EXPECT_EQ(expected_event, mock_observer2.LastEvent());
 393   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 394   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 395
 396   // Verify that the addition of a third observer only causes an event to be
 397   // dispatched to the new observer.
 398   MockObserver mock_observer3;
 399   params.dispatch_initial_state = true;
 400   host_observers.AddObserver(&mock_observer3, params);
 401   EXPECT_EQ(1, mock_observer1.EventCount());
 402   EXPECT_EQ(2, mock_observer2.EventCount());
 403   EXPECT_EQ(1, mock_observer3.EventCount());
 404   EXPECT_EQ(expected_event, mock_observer3.LastEvent());
 405 }
 406
 407 // Verify that negative usage and quota is changed to zero.
 408 TEST_F(HostStorageObserversTest, NegativeUsageAndQuota) {
 409   StorageObserver::MonitorParams params(kStorageTypePersistent,
 410                                         GURL(kDefaultOrigin),
 411                                         base::TimeDelta::FromHours(1),
 412                                         false);
 413   const int64 kUsage = -324554;
 414   const int64 kQuota = -234354354;
 415   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 416
 417   MockObserver mock_observer;
 418   HostStorageObservers host_observers(quota_manager_.get());
 419   host_observers.AddObserver(&mock_observer, params);
 420
 421   StorageObserver::Event expected_event(params.filter, 0, 0);
 422   host_observers.NotifyUsageChange(params.filter, -87324);
 423   EXPECT_EQ(expected_event, mock_observer.LastEvent());
 424 }
 425
 426 // Verify that HostStorageObservers can recover from a bad initialization.
 427 TEST_F(HostStorageObserversTest, RecoverFromBadUsageInit) {
 428   StorageObserver::MonitorParams params(kStorageTypePersistent,
 429                                         GURL(kDefaultOrigin),
 430                                         base::TimeDelta::FromHours(1),
 431                                         false);
 432   MockObserver mock_observer;
 433   HostStorageObservers host_observers(quota_manager_.get());
 434   host_observers.AddObserver(&mock_observer, params);
 435
 436   // Set up the quota manager to return an error status.
 437   const int64 kUsage = 6656;
 438   const int64 kQuota = 99585556;
 439   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaErrorNotSupported);
 440
 441   // Verify that |host_observers| is not initialized and an event has not been
 442   // dispatched.
 443   host_observers.NotifyUsageChange(params.filter, 9438);
 444   EXPECT_EQ(0, mock_observer.EventCount());
 445   EXPECT_FALSE(host_observers.is_initialized());
 446   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 447   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 448
 449   // Now ensure that quota manager returns a good status.
 450   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 451   host_observers.NotifyUsageChange(params.filter, 9048543);
 452   StorageObserver::Event expected_event(params.filter, kUsage, kQuota);
 453   EXPECT_EQ(1, mock_observer.EventCount());
 454   EXPECT_EQ(expected_event, mock_observer.LastEvent());
 455   EXPECT_TRUE(host_observers.is_initialized());
 456 }
 457
 458 // Verify that HostStorageObservers handle initialization of the cached usage
 459 // and quota correctly.
 460 TEST_F(HostStorageObserversTest, AsyncInitialization) {
 461   StorageObserver::MonitorParams params(kStorageTypePersistent,
 462                                         GURL(kDefaultOrigin),
 463                                         base::TimeDelta::FromHours(1),
 464                                         false);
 465   MockObserver mock_observer;
 466   HostStorageObservers host_observers(quota_manager_.get());
 467   host_observers.AddObserver(&mock_observer, params);
 468
 469   // Trigger initialization. Leave the mock quota manager uninitialized so that
 470   // the callback is not invoked.
 471   host_observers.NotifyUsageChange(params.filter, 7645);
 472   EXPECT_EQ(0, mock_observer.EventCount());
 473   EXPECT_FALSE(host_observers.is_initialized());
 474   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 475   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 476
 477   // Simulate notifying |host_observers| of a usage change before initialization
 478   // is complete.
 479   const int64 kUsage = 6656;
 480   const int64 kQuota = 99585556;
 481   const int64 kDelta = 327643;
 482   host_observers.NotifyUsageChange(params.filter, kDelta);
 483   EXPECT_EQ(0, mock_observer.EventCount());
 484   EXPECT_FALSE(host_observers.is_initialized());
 485   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 486   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 487
 488   // Simulate an asynchronous callback from QuotaManager.
 489   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 490   quota_manager_->InvokeCallback();
 491   StorageObserver::Event expected_event(params.filter, kUsage + kDelta, kQuota);
 492   EXPECT_EQ(1, mock_observer.EventCount());
 493   EXPECT_EQ(expected_event, mock_observer.LastEvent());
 494   EXPECT_TRUE(host_observers.is_initialized());
 495   EXPECT_EQ(NULL, GetPendingEvent(host_observers));
 496   EXPECT_EQ(0, GetRequiredUpdatesCount(host_observers));
 497 }
 498
 499 // Tests for StorageTypeObservers:
 500
 501 typedef StorageTestWithManagerBase StorageTypeObserversTest;
 502
 503 // Test adding and removing observers.
 504 TEST_F(StorageTypeObserversTest, AddRemoveObservers) {
 505   StorageTypeObservers type_observers(quota_manager_.get());
 506
 507   StorageObserver::MonitorParams params1(kStorageTypePersistent,
 508                                          GURL(kDefaultOrigin),
 509                                          base::TimeDelta::FromHours(1),
 510                                          false);
 511   StorageObserver::MonitorParams params2(kStorageTypePersistent,
 512                                          GURL(kAlternativeOrigin),
 513                                          base::TimeDelta::FromHours(1),
 514                                          false);
 515   std::string host1 = net::GetHostOrSpecFromURL(params1.filter.origin);
 516   std::string host2 = net::GetHostOrSpecFromURL(params2.filter.origin);
 517
 518   MockObserver mock_observer1;
 519   MockObserver mock_observer2;
 520   MockObserver mock_observer3;
 521   type_observers.AddObserver(&mock_observer1, params1);
 522   type_observers.AddObserver(&mock_observer2, params1);
 523
 524   type_observers.AddObserver(&mock_observer1, params2);
 525   type_observers.AddObserver(&mock_observer2, params2);
 526   type_observers.AddObserver(&mock_observer3, params2);
 527
 528   // Verify that the observers have been removed correctly.
 529   ASSERT_TRUE(type_observers.GetHostObservers(host1));
 530   ASSERT_TRUE(type_observers.GetHostObservers(host2));
 531   EXPECT_EQ(2, GetObserverCount(*type_observers.GetHostObservers(host1)));
 532   EXPECT_EQ(3, GetObserverCount(*type_observers.GetHostObservers(host2)));
 533
 534   // Remove an observer for a specific filter.
 535   type_observers.RemoveObserverForFilter(&mock_observer1, params1.filter);
 536   ASSERT_TRUE(type_observers.GetHostObservers(host1));
 537   ASSERT_TRUE(type_observers.GetHostObservers(host2));
 538   EXPECT_EQ(1, GetObserverCount(*type_observers.GetHostObservers(host1)));
 539   EXPECT_EQ(3, GetObserverCount(*type_observers.GetHostObservers(host2)));
 540
 541   // Remove all instances of an observer.
 542   type_observers.RemoveObserver(&mock_observer2);
 543   ASSERT_TRUE(type_observers.GetHostObservers(host2));
 544   EXPECT_EQ(2, GetObserverCount(*type_observers.GetHostObservers(host2)));
 545   // Observers of host1 has been deleted as it is empty.
 546   EXPECT_FALSE(type_observers.GetHostObservers(host1));
 547 }
 548
 549 // Tests for StorageMonitor:
 550
 551 class StorageMonitorTest : public StorageTestWithManagerBase {
 552  public:
 553   StorageMonitorTest()
 554       : storage_monitor_(NULL),
 555         params1_(kStorageTypeTemporary,
 556                  GURL(kDefaultOrigin),
 557                  base::TimeDelta::FromHours(1),
 558                  false),
 559         params2_(kStorageTypePersistent,
 560                  GURL(kDefaultOrigin),
 561                  base::TimeDelta::FromHours(1),
 562                  false) {
 563   }
 564
 565  protected:
 566   virtual void SetUp() OVERRIDE {
 567     StorageTestWithManagerBase::SetUp();
 568
 569     storage_monitor_ = quota_manager_->storage_monitor_.get();
 570     host_ = net::GetHostOrSpecFromURL(params1_.filter.origin);
 571
 572     storage_monitor_->AddObserver(&mock_observer1_, params1_);
 573     storage_monitor_->AddObserver(&mock_observer2_, params1_);
 574
 575     storage_monitor_->AddObserver(&mock_observer1_, params2_);
 576     storage_monitor_->AddObserver(&mock_observer2_, params2_);
 577     storage_monitor_->AddObserver(&mock_observer3_, params2_);
 578   }
 579
 580   int GetObserverCount(StorageType storage_type) {
 581     const StorageTypeObservers* type_observers =
 582         storage_monitor_->GetStorageTypeObservers(storage_type);
 583     return StorageMonitorTestBase::GetObserverCount(
 584                 *type_observers->GetHostObservers(host_));
 585   }
 586
 587   void CheckObserverCount(int expected_temporary, int expected_persistent) {
 588     ASSERT_TRUE(storage_monitor_->GetStorageTypeObservers(
 589                     kStorageTypeTemporary));
 590     ASSERT_TRUE(storage_monitor_->GetStorageTypeObservers(
 591                     kStorageTypeTemporary)->GetHostObservers(host_));
 592     EXPECT_EQ(expected_temporary, GetObserverCount(kStorageTypeTemporary));
 593
 594     ASSERT_TRUE(storage_monitor_->GetStorageTypeObservers(
 595                     kStorageTypePersistent));
 596     ASSERT_TRUE(storage_monitor_->GetStorageTypeObservers(
 597                     kStorageTypePersistent)->GetHostObservers(host_));
 598     EXPECT_EQ(expected_persistent, GetObserverCount(kStorageTypePersistent));
 599   }
 600
 601   StorageMonitor* storage_monitor_;
 602   StorageObserver::MonitorParams params1_;
 603   StorageObserver::MonitorParams params2_;
 604   MockObserver mock_observer1_;
 605   MockObserver mock_observer2_;
 606   MockObserver mock_observer3_;
 607   std::string host_;
 608 };
 609
 610 // Test adding storage observers.
 611 TEST_F(StorageMonitorTest, AddObservers) {
 612   // Verify that the observers are added correctly.
 613   CheckObserverCount(2, 3);
 614 }
 615
 616 // Test dispatching events to storage observers.
 617 TEST_F(StorageMonitorTest, EventDispatch) {
 618   // Verify dispatch of events.
 619   const int64 kUsage = 5325;
 620   const int64 kQuota = 903845;
 621   quota_manager_->SetCallbackParams(kUsage, kQuota, kQuotaStatusOk);
 622   storage_monitor_->NotifyUsageChange(params1_.filter, 9048543);
 623
 624   StorageObserver::Event expected_event(params1_.filter, kUsage, kQuota);
 625   EXPECT_EQ(1, mock_observer1_.EventCount());
 626   EXPECT_EQ(1, mock_observer2_.EventCount());
 627   EXPECT_EQ(0, mock_observer3_.EventCount());
 628   EXPECT_EQ(expected_event, mock_observer1_.LastEvent());
 629   EXPECT_EQ(expected_event, mock_observer2_.LastEvent());
 630 }
 631
 632 // Test removing all instances of an observer.
 633 TEST_F(StorageMonitorTest, RemoveObserver) {
 634   storage_monitor_->RemoveObserver(&mock_observer1_);
 635   CheckObserverCount(1, 2);
 636 }
 637
 638 // Test removing an observer for a specific filter.
 639 TEST_F(StorageMonitorTest, RemoveObserverForFilter) {
 640   storage_monitor_->RemoveObserverForFilter(&mock_observer1_, params2_.filter);
 641   CheckObserverCount(2, 2);
 642 }
 643
 644 // Integration test for QuotaManager and StorageMonitor:
 645
 646 class StorageMonitorIntegrationTest : public testing::Test {
 647  public:
 648   virtual void SetUp() OVERRIDE {
 649     ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
 650     storage_policy_ = new MockSpecialStoragePolicy();
 651     quota_manager_ = new QuotaManager(
 652         false,
 653         data_dir_.path(),
 654         base::MessageLoopProxy::current().get(),
 655         base::MessageLoopProxy::current().get(),
 656         storage_policy_.get());
 657
 658     client_ = new MockStorageClient(quota_manager_->proxy(),
 659                                     NULL,
 660                                     QuotaClient::kFileSystem,
 661                                     0);
 662
 663     quota_manager_->proxy()->RegisterClient(client_);
 664   }
 665
 666   virtual void TearDown() OVERRIDE {
 667     // This ensures the quota manager is destroyed correctly.
 668     quota_manager_ = NULL;
 669     base::RunLoop().RunUntilIdle();
 670   }
 671
 672  protected:
 673   base::MessageLoop message_loop_;
 674   base::ScopedTempDir data_dir_;
 675   scoped_refptr<MockSpecialStoragePolicy> storage_policy_;
 676   scoped_refptr<QuotaManager> quota_manager_;
 677   MockStorageClient* client_;
 678 };
 679
 680 // This test simulates a usage change in a quota client and verifies that a
 681 // storage observer will receive a storage event.
 682 TEST_F(StorageMonitorIntegrationTest, NotifyUsageEvent) {
 683   const StorageType kTestStorageType = kStorageTypePersistent;
 684   const int64 kTestUsage = 234743;
 685
 686   // Register the observer.
 687   StorageObserver::MonitorParams params(kTestStorageType,
 688                                         GURL(kDefaultOrigin),
 689                                         base::TimeDelta::FromHours(1),
 690                                         false);
 691   MockObserver mock_observer;
 692   quota_manager_->AddStorageObserver(&mock_observer, params);
 693
 694   // Fire a usage change.
 695   client_->AddOriginAndNotify(GURL(kDefaultOrigin),
 696                               kTestStorageType,
 697                               kTestUsage);
 698   base::RunLoop().RunUntilIdle();
 699
 700   // Verify that the observer receives it.
 701   ASSERT_EQ(1, mock_observer.EventCount());
 702   const StorageObserver::Event& event = mock_observer.LastEvent();
 703   EXPECT_EQ(params.filter, event.filter);
 704   EXPECT_EQ(kTestUsage, event.usage);
 705 }
 706
 707 }  // namespace content