content/browser/geolocation/location_arbitrator_impl_unittest.cc

   1 // Copyright (c) 2012 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 "base/bind.h"
   6 #include "base/memory/scoped_ptr.h"
   7 #include "content/browser/geolocation/fake_access_token_store.h"
   8 #include "content/browser/geolocation/location_arbitrator_impl.h"
   9 #include "content/browser/geolocation/mock_location_provider.h"
  10 #include "content/public/common/geoposition.h"
  11 #include "testing/gmock/include/gmock/gmock.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13
  14 using ::testing::NiceMock;
  15
  16 namespace content {
  17
  18 class MockLocationObserver {
  19  public:
  20   // Need a vtable for GMock.
  21   virtual ~MockLocationObserver() {}
  22   void InvalidateLastPosition() {
  23     last_position_.latitude = 100;
  24     last_position_.error_code = Geoposition::ERROR_CODE_NONE;
  25     ASSERT_FALSE(last_position_.Validate());
  26   }
  27   // Delegate
  28   void OnLocationUpdate(const Geoposition& position) {
  29     last_position_ = position;
  30   }
  31
  32   Geoposition last_position_;
  33 };
  34
  35 double g_fake_time_now_secs = 1;
  36
  37 base::Time GetTimeNowForTest() {
  38   return base::Time::FromDoubleT(g_fake_time_now_secs);
  39 }
  40
  41 void AdvanceTimeNow(const base::TimeDelta& delta) {
  42   g_fake_time_now_secs += delta.InSecondsF();
  43 }
  44
  45 void SetPositionFix(MockLocationProvider* provider,
  46                     double latitude,
  47                     double longitude,
  48                     double accuracy) {
  49   Geoposition position;
  50   position.error_code = Geoposition::ERROR_CODE_NONE;
  51   position.latitude = latitude;
  52   position.longitude = longitude;
  53   position.accuracy = accuracy;
  54   position.timestamp = GetTimeNowForTest();
  55   ASSERT_TRUE(position.Validate());
  56   provider->HandlePositionChanged(position);
  57 }
  58
  59 void SetReferencePosition(MockLocationProvider* provider) {
  60   SetPositionFix(provider, 51.0, -0.1, 400);
  61 }
  62
  63 namespace {
  64
  65 class TestingLocationArbitrator : public LocationArbitratorImpl {
  66  public:
  67   TestingLocationArbitrator(
  68       const LocationArbitratorImpl::LocationUpdateCallback& callback,
  69       AccessTokenStore* access_token_store)
  70       : LocationArbitratorImpl(callback),
  71         cell_(NULL),
  72         gps_(NULL),
  73         access_token_store_(access_token_store) {
  74   }
  75
  76   base::Time GetTimeNow() const override { return GetTimeNowForTest(); }
  77
  78   AccessTokenStore* NewAccessTokenStore() override {
  79     return access_token_store_.get();
  80   }
  81
  82   LocationProvider* NewNetworkLocationProvider(
  83       AccessTokenStore* access_token_store,
  84       net::URLRequestContextGetter* context,
  85       const GURL& url,
  86       const base::string16& access_token) override {
  87     return new MockLocationProvider(&cell_);
  88   }
  89
  90   LocationProvider* NewSystemLocationProvider() override {
  91     return new MockLocationProvider(&gps_);
  92   }
  93
  94   // Two location providers, with nice short names to make the tests more
  95   // readable. Note |gps_| will only be set when there is a high accuracy
  96   // observer registered (and |cell_| when there's at least one observer of any
  97   // type).
  98   MockLocationProvider* cell_;
  99   MockLocationProvider* gps_;
 100   scoped_refptr<AccessTokenStore> access_token_store_;
 101 };
 102
 103 }  // namespace
 104
 105 class GeolocationLocationArbitratorTest : public testing::Test {
 106  protected:
 107   // testing::Test
 108   void SetUp() override {
 109     access_token_store_ = new NiceMock<FakeAccessTokenStore>;
 110     observer_.reset(new MockLocationObserver);
 111     LocationArbitratorImpl::LocationUpdateCallback callback =
 112         base::Bind(&MockLocationObserver::OnLocationUpdate,
 113                    base::Unretained(observer_.get()));
 114     arbitrator_.reset(new TestingLocationArbitrator(
 115         callback, access_token_store_.get()));
 116   }
 117
 118   // testing::Test
 119   void TearDown() override {}
 120
 121   void CheckLastPositionInfo(double latitude,
 122                              double longitude,
 123                              double accuracy) {
 124     Geoposition geoposition = observer_->last_position_;
 125     EXPECT_TRUE(geoposition.Validate());
 126     EXPECT_DOUBLE_EQ(latitude, geoposition.latitude);
 127     EXPECT_DOUBLE_EQ(longitude, geoposition.longitude);
 128     EXPECT_DOUBLE_EQ(accuracy, geoposition.accuracy);
 129   }
 130
 131   base::TimeDelta SwitchOnFreshnessCliff() {
 132     // Add 1, to ensure it meets any greater-than test.
 133     return base::TimeDelta::FromMilliseconds(
 134         LocationArbitratorImpl::kFixStaleTimeoutMilliseconds + 1);
 135   }
 136
 137   MockLocationProvider* cell() {
 138     return arbitrator_->cell_;
 139   }
 140
 141   MockLocationProvider* gps() {
 142     return arbitrator_->gps_;
 143   }
 144
 145   scoped_refptr<FakeAccessTokenStore> access_token_store_;
 146   scoped_ptr<MockLocationObserver> observer_;
 147   scoped_ptr<TestingLocationArbitrator> arbitrator_;
 148   base::MessageLoop loop_;
 149 };
 150
 151 TEST_F(GeolocationLocationArbitratorTest, CreateDestroy) {
 152   EXPECT_TRUE(access_token_store_.get());
 153   EXPECT_TRUE(arbitrator_ != NULL);
 154   arbitrator_.reset();
 155   SUCCEED();
 156 }
 157
 158 TEST_F(GeolocationLocationArbitratorTest, OnPermissionGranted) {
 159   EXPECT_FALSE(arbitrator_->HasPermissionBeenGranted());
 160   arbitrator_->OnPermissionGranted();
 161   EXPECT_TRUE(arbitrator_->HasPermissionBeenGranted());
 162   // Can't check the provider has been notified without going through the
 163   // motions to create the provider (see next test).
 164   EXPECT_FALSE(cell());
 165   EXPECT_FALSE(gps());
 166 }
 167
 168 TEST_F(GeolocationLocationArbitratorTest, NormalUsage) {
 169   ASSERT_TRUE(access_token_store_.get());
 170   ASSERT_TRUE(arbitrator_ != NULL);
 171
 172   EXPECT_FALSE(cell());
 173   EXPECT_FALSE(gps());
 174   arbitrator_->StartProviders(false);
 175
 176   EXPECT_TRUE(access_token_store_->access_token_set_.empty());
 177   EXPECT_TRUE(access_token_store_->access_token_set_.empty());
 178
 179   access_token_store_->NotifyDelegateTokensLoaded();
 180   ASSERT_TRUE(cell());
 181   EXPECT_TRUE(gps());
 182   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, cell()->state_);
 183   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, gps()->state_);
 184   EXPECT_FALSE(observer_->last_position_.Validate());
 185   EXPECT_EQ(Geoposition::ERROR_CODE_NONE,
 186             observer_->last_position_.error_code);
 187
 188   SetReferencePosition(cell());
 189
 190   EXPECT_TRUE(observer_->last_position_.Validate() ||
 191               observer_->last_position_.error_code !=
 192                   Geoposition::ERROR_CODE_NONE);
 193   EXPECT_EQ(cell()->position_.latitude,
 194             observer_->last_position_.latitude);
 195
 196   EXPECT_FALSE(cell()->is_permission_granted_);
 197   EXPECT_FALSE(arbitrator_->HasPermissionBeenGranted());
 198   arbitrator_->OnPermissionGranted();
 199   EXPECT_TRUE(arbitrator_->HasPermissionBeenGranted());
 200   EXPECT_TRUE(cell()->is_permission_granted_);
 201 }
 202
 203 TEST_F(GeolocationLocationArbitratorTest, SetObserverOptions) {
 204   arbitrator_->StartProviders(false);
 205   access_token_store_->NotifyDelegateTokensLoaded();
 206   ASSERT_TRUE(cell());
 207   ASSERT_TRUE(gps());
 208   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, cell()->state_);
 209   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, gps()->state_);
 210   SetReferencePosition(cell());
 211   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, cell()->state_);
 212   EXPECT_EQ(MockLocationProvider::LOW_ACCURACY, gps()->state_);
 213   arbitrator_->StartProviders(true);
 214   EXPECT_EQ(MockLocationProvider::HIGH_ACCURACY, cell()->state_);
 215   EXPECT_EQ(MockLocationProvider::HIGH_ACCURACY, gps()->state_);
 216 }
 217
 218 TEST_F(GeolocationLocationArbitratorTest, Arbitration) {
 219   arbitrator_->StartProviders(false);
 220   access_token_store_->NotifyDelegateTokensLoaded();
 221   ASSERT_TRUE(cell());
 222   ASSERT_TRUE(gps());
 223
 224   SetPositionFix(cell(), 1, 2, 150);
 225
 226   // First position available
 227   EXPECT_TRUE(observer_->last_position_.Validate());
 228   CheckLastPositionInfo(1, 2, 150);
 229
 230   SetPositionFix(gps(), 3, 4, 50);
 231
 232   // More accurate fix available
 233   CheckLastPositionInfo(3, 4, 50);
 234
 235   SetPositionFix(cell(), 5, 6, 150);
 236
 237   // New fix is available but it's less accurate, older fix should be kept.
 238   CheckLastPositionInfo(3, 4, 50);
 239
 240   // Advance time, and notify once again
 241   AdvanceTimeNow(SwitchOnFreshnessCliff());
 242   cell()->HandlePositionChanged(cell()->position_);
 243
 244   // New fix is available, less accurate but fresher
 245   CheckLastPositionInfo(5, 6, 150);
 246
 247   // Advance time, and set a low accuracy position
 248   AdvanceTimeNow(SwitchOnFreshnessCliff());
 249   SetPositionFix(cell(), 5.676731, 139.629385, 1000);
 250   CheckLastPositionInfo(5.676731, 139.629385, 1000);
 251
 252   // 15 secs later, step outside. Switches to gps signal.
 253   AdvanceTimeNow(base::TimeDelta::FromSeconds(15));
 254   SetPositionFix(gps(), 3.5676457, 139.629198, 50);
 255   CheckLastPositionInfo(3.5676457, 139.629198, 50);
 256
 257   // 5 mins later switch cells while walking. Stay on gps.
 258   AdvanceTimeNow(base::TimeDelta::FromMinutes(5));
 259   SetPositionFix(cell(), 3.567832, 139.634648, 300);
 260   SetPositionFix(gps(), 3.5677675, 139.632314, 50);
 261   CheckLastPositionInfo(3.5677675, 139.632314, 50);
 262
 263   // Ride train and gps signal degrades slightly. Stay on fresher gps
 264   AdvanceTimeNow(base::TimeDelta::FromMinutes(5));
 265   SetPositionFix(gps(), 3.5679026, 139.634777, 300);
 266   CheckLastPositionInfo(3.5679026, 139.634777, 300);
 267
 268   // 14 minutes later
 269   AdvanceTimeNow(base::TimeDelta::FromMinutes(14));
 270
 271   // GPS reading misses a beat, but don't switch to cell yet to avoid
 272   // oscillating.
 273   SetPositionFix(gps(), 3.5659005, 139.682579, 300);
 274
 275   AdvanceTimeNow(base::TimeDelta::FromSeconds(7));
 276   SetPositionFix(cell(), 3.5689579, 139.691420, 1000);
 277   CheckLastPositionInfo(3.5659005, 139.682579, 300);
 278
 279   // 1 minute later
 280   AdvanceTimeNow(base::TimeDelta::FromMinutes(1));
 281
 282   // Enter tunnel. Stay on fresher gps for a moment.
 283   SetPositionFix(cell(), 3.5657078, 139.68922, 300);
 284   SetPositionFix(gps(), 3.5657104, 139.690341, 300);
 285   CheckLastPositionInfo(3.5657104, 139.690341, 300);
 286
 287   // 2 minutes later
 288   AdvanceTimeNow(base::TimeDelta::FromMinutes(2));
 289   // Arrive in station. Cell moves but GPS is stale. Switch to fresher cell.
 290   SetPositionFix(cell(), 3.5658700, 139.069979, 1000);
 291   CheckLastPositionInfo(3.5658700, 139.069979, 1000);
 292 }
 293
 294 TEST_F(GeolocationLocationArbitratorTest, TwoOneShotsIsNewPositionBetter) {
 295   arbitrator_->StartProviders(false);
 296   access_token_store_->NotifyDelegateTokensLoaded();
 297   ASSERT_TRUE(cell());
 298   ASSERT_TRUE(gps());
 299
 300   // Set the initial position.
 301   SetPositionFix(cell(), 3, 139, 100);
 302   CheckLastPositionInfo(3, 139, 100);
 303
 304   // Restart providers to simulate a one-shot request.
 305   arbitrator_->StopProviders();
 306
 307   // To test 240956, perform a throwaway alloc.
 308   // This convinces the allocator to put the providers in a new memory location.
 309   MockLocationProvider* fakeMockProvider = NULL;
 310   LocationProvider* fakeProvider =
 311       new MockLocationProvider(&fakeMockProvider);
 312
 313   arbitrator_->StartProviders(false);
 314   access_token_store_->NotifyDelegateTokensLoaded();
 315
 316   // Advance the time a short while to simulate successive calls.
 317   AdvanceTimeNow(base::TimeDelta::FromMilliseconds(5));
 318
 319   // Update with a less accurate position to verify 240956.
 320   SetPositionFix(cell(), 3, 139, 150);
 321   CheckLastPositionInfo(3, 139, 150);
 322
 323   // No delete required for fakeMockProvider. It points to fakeProvider.
 324   delete fakeProvider;
 325 }
 326
 327 }  // namespace content