chrome/browser/signin/cross_device_promo_unittest.cc

   1 // Copyright 2015 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 "chrome/browser/signin/cross_device_promo.h"
   6
   7 #include "base/metrics/field_trial.h"
   8 #include "base/run_loop.h"
   9 #include "base/test/histogram_tester.h"
  10 #include "chrome/browser/prefs/browser_prefs.h"
  11 #include "chrome/browser/prefs/pref_service_syncable.h"
  12 #include "chrome/browser/signin/chrome_signin_client_factory.h"
  13 #include "chrome/browser/signin/cross_device_promo_factory.h"
  14 #include "chrome/browser/signin/fake_gaia_cookie_manager_service.h"
  15 #include "chrome/browser/signin/fake_signin_manager_builder.h"
  16 #include "chrome/browser/signin/gaia_cookie_manager_service_factory.h"
  17 #include "chrome/browser/signin/signin_manager_factory.h"
  18 #include "chrome/browser/signin/test_signin_client_builder.h"
  19 #include "chrome/common/pref_names.h"
  20 #include "chrome/test/base/testing_browser_process.h"
  21 #include "chrome/test/base/testing_pref_service_syncable.h"
  22 #include "chrome/test/base/testing_profile.h"
  23 #include "chrome/test/base/testing_profile_manager.h"
  24 #include "components/signin/core/browser/signin_manager.h"
  25 #include "components/signin/core/browser/signin_metrics.h"
  26 #include "components/signin/core/browser/test_signin_client.h"
  27 #include "components/variations/entropy_provider.h"
  28 #include "components/variations/variations_associated_data.h"
  29 #include "content/public/test/test_browser_thread_bundle.h"
  30 #include "google_apis/gaia/gaia_urls.h"
  31 #include "net/url_request/test_url_fetcher_factory.h"
  32 #include "testing/gtest/include/gtest/gtest.h"
  33
  34 namespace {
  35
  36 typedef std::map<std::string, std::string> VariationsMap;
  37
  38 int64 InTwoHours() {
  39   return (base::Time::Now() + base::TimeDelta::FromHours(2)).ToInternalValue();
  40 }
  41
  42 }  // namespace
  43
  44 class CrossDevicePromoObserver : public CrossDevicePromo::Observer {
  45  public:
  46   explicit CrossDevicePromoObserver(CrossDevicePromo* promo)
  47       : eligible_(false),
  48         times_set_eligible_(0),
  49         times_set_ineligible_(0),
  50         promo_(promo) {
  51     promo->AddObserver(this);
  52   }
  53
  54   ~CrossDevicePromoObserver() { promo_->RemoveObserver(this); }
  55
  56   void OnPromoEligibilityChanged(bool eligible) override {
  57     eligible_ = eligible;
  58     if (eligible)
  59       ++times_set_eligible_;
  60     else
  61       ++times_set_ineligible_;
  62   }
  63
  64   bool is_eligible() const { return eligible_; }
  65   int times_set_eligible() const { return times_set_eligible_; }
  66   int times_set_inactive() const { return times_set_ineligible_; }
  67
  68  private:
  69   bool eligible_;
  70   int times_set_eligible_;
  71   int times_set_ineligible_;
  72   CrossDevicePromo* promo_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(CrossDevicePromoObserver);
  75 };
  76
  77 class CrossDevicePromoTest : public ::testing::Test {
  78  public:
  79   CrossDevicePromoTest();
  80
  81   void SetUp() override;
  82
  83   // Destroys any variations which might be defined, and starts fresh.
  84   void ResetFieldTrialList();
  85
  86   // Defines a default set of variation parameters for promo initialization.
  87   void InitPromoVariation();
  88
  89   CrossDevicePromo* promo() { return cross_device_promo_; }
  90   TestingProfile* profile() { return profile_; }
  91   FakeSigninManagerForTesting* signin_manager() { return signin_manager_; }
  92   base::HistogramTester* histogram_tester() { return &histogram_tester_; }
  93   TestingPrefServiceSyncable* prefs() { return pref_service_; }
  94   FakeGaiaCookieManagerService* cookie_manager_service() {
  95     return cookie_manager_service_;
  96   }
  97   net::FakeURLFetcherFactory* fetcher_factory() {
  98     return &fake_url_fetcher_factory_;
  99   }
 100
 101  private:
 102   content::TestBrowserThreadBundle bundle_;
 103   CrossDevicePromo* cross_device_promo_;
 104   TestingProfile* profile_;
 105   FakeSigninManagerForTesting* signin_manager_;
 106   FakeGaiaCookieManagerService* cookie_manager_service_;
 107   TestingPrefServiceSyncable* pref_service_;
 108   scoped_ptr<TestingProfileManager> testing_profile_manager_;
 109   base::HistogramTester histogram_tester_;
 110   scoped_ptr<base::FieldTrialList> field_trial_list_;
 111   net::FakeURLFetcherFactory fake_url_fetcher_factory_;
 112
 113   DISALLOW_COPY_AND_ASSIGN(CrossDevicePromoTest);
 114 };
 115
 116 CrossDevicePromoTest::CrossDevicePromoTest() : fake_url_fetcher_factory_(NULL) {
 117   ResetFieldTrialList();
 118 }
 119
 120 void CrossDevicePromoTest::SetUp() {
 121   testing_profile_manager_.reset(
 122       new TestingProfileManager(TestingBrowserProcess::GetGlobal()));
 123   ASSERT_TRUE(testing_profile_manager_.get()->SetUp());
 124
 125   TestingProfile::TestingFactories factories;
 126   factories.push_back(std::make_pair(ChromeSigninClientFactory::GetInstance(),
 127                                      signin::BuildTestSigninClient));
 128   factories.push_back(
 129       std::make_pair(GaiaCookieManagerServiceFactory::GetInstance(),
 130                      FakeGaiaCookieManagerService::Build));
 131   factories.push_back(std::make_pair(SigninManagerFactory::GetInstance(),
 132                                      BuildFakeSigninManagerBase));
 133
 134   pref_service_ = new TestingPrefServiceSyncable();
 135   chrome::RegisterUserProfilePrefs(pref_service_->registry());
 136
 137   profile_ = testing_profile_manager_.get()->CreateTestingProfile(
 138       "name", make_scoped_ptr<PrefServiceSyncable>(pref_service_),
 139       base::UTF8ToUTF16("name"), 0, std::string(), factories);
 140
 141   cookie_manager_service_ = static_cast<FakeGaiaCookieManagerService*>(
 142       GaiaCookieManagerServiceFactory::GetForProfile(profile()));
 143   cookie_manager_service_->Init(&fake_url_fetcher_factory_);
 144
 145   signin_manager_ = static_cast<FakeSigninManagerForTesting*>(
 146       SigninManagerFactory::GetForProfile(profile()));
 147
 148   cross_device_promo_ = CrossDevicePromoFactory::GetForProfile(profile());
 149 }
 150
 151 void CrossDevicePromoTest::ResetFieldTrialList() {
 152   // Destroy the existing FieldTrialList before creating a new one to avoid
 153   // a DCHECK.
 154   field_trial_list_.reset();
 155   field_trial_list_.reset(
 156       new base::FieldTrialList(new metrics::SHA1EntropyProvider("foo")));
 157   variations::testing::ClearAllVariationParams();
 158 }
 159
 160 void CrossDevicePromoTest::InitPromoVariation() {
 161   VariationsMap variations_params;
 162   variations_params[
 163       CrossDevicePromo::kParamHoursBetweenDeviceActivityChecks] = "2";
 164   variations_params[
 165       CrossDevicePromo::kParamDaysToVerifySingleUserProfile] = "0";
 166   variations_params[
 167       CrossDevicePromo::kParamMinutesBetweenBrowsingSessions] = "0";
 168   variations_params[
 169       CrossDevicePromo::kParamMinutesMaxContextSwitchDuration] = "10";
 170   variations_params[
 171       CrossDevicePromo::kParamRPCThrottle] = "0";
 172   EXPECT_TRUE(variations::AssociateVariationParams(
 173       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A", variations_params));
 174   base::FieldTrialList::CreateFieldTrial(
 175       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A");
 176 }
 177
 178 // Tests for incrementally large portions flow that determines if the promo
 179 // should be shown.
 180
 181 TEST_F(CrossDevicePromoTest, Uninitialized) {
 182   ASSERT_TRUE(promo());
 183   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 184                                          signin_metrics::NO_VARIATIONS_CONFIG,
 185                                          1);
 186
 187   promo()->CheckPromoEligibilityForTesting();
 188   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 189                                          signin_metrics::NO_VARIATIONS_CONFIG,
 190                                          2);
 191   histogram_tester()->ExpectTotalCount("Signin.XDevicePromo.Eligibility", 0);
 192   EXPECT_FALSE(prefs()->GetBoolean(prefs::kCrossDevicePromoOptedOut));
 193 }
 194
 195 TEST_F(CrossDevicePromoTest, UnitializedOptedOut) {
 196   CrossDevicePromoObserver observer(promo());
 197
 198   promo()->OptOut();
 199   // Opting out doesn't de-activate a never-active promo.
 200   EXPECT_EQ(0, observer.times_set_inactive());
 201   EXPECT_TRUE(prefs()->GetBoolean(prefs::kCrossDevicePromoOptedOut));
 202
 203   // An opted-out promo will never be initialized.
 204   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 205   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 206                                         signin_metrics::NO_VARIATIONS_CONFIG,
 207                                         1);
 208   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 209                                         signin_metrics::UNINITIALIZED_OPTED_OUT,
 210                                         1);
 211   histogram_tester()->ExpectTotalCount("Signin.XDevicePromo.Eligibility", 0);
 212 }
 213
 214 TEST_F(CrossDevicePromoTest, PartiallyInitialized) {
 215   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 216                                          signin_metrics::NO_VARIATIONS_CONFIG,
 217                                          1);
 218
 219   VariationsMap variations_params;
 220   variations_params[
 221       CrossDevicePromo::kParamHoursBetweenDeviceActivityChecks] = "1";
 222   variations_params[
 223       CrossDevicePromo::kParamDaysToVerifySingleUserProfile] = "1";
 224   EXPECT_TRUE(variations::AssociateVariationParams(
 225       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A", variations_params));
 226   base::FieldTrialList::CreateFieldTrial(
 227       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A");
 228
 229   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 230   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 231                                          signin_metrics::NO_VARIATIONS_CONFIG,
 232                                          2);
 233   histogram_tester()->ExpectTotalCount("Signin.XDevicePromo.Eligibility", 0);
 234 }
 235
 236 TEST_F(CrossDevicePromoTest, FullyInitialized) {
 237   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 238                                          signin_metrics::NO_VARIATIONS_CONFIG,
 239                                          1);
 240
 241   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 242   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Initialized",
 243                                          signin_metrics::NO_VARIATIONS_CONFIG,
 244                                          2);
 245
 246   InitPromoVariation();
 247   signin_manager()->SignIn("12345", "foo@bar.com", "password");
 248   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 249   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 250                                         signin_metrics::INITIALIZED, 1);
 251   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 252                                         signin_metrics::NO_VARIATIONS_CONFIG,
 253                                         2);
 254
 255   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 256                                          signin_metrics::SIGNED_IN, 1);
 257 }
 258
 259 TEST_F(CrossDevicePromoTest, InitializedOptOut) {
 260   // In a normal browser, the variations get set before the CrossDevicePromo is
 261   // created. Here, we need to force another Init() by calling
 262   // CheckPromoEligibilityForTesting().
 263   InitPromoVariation();
 264   signin_manager()->SignIn("12345", "foo@bar.com", "password");
 265   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 266
 267   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 268                                         signin_metrics::INITIALIZED, 1);
 269   histogram_tester()->ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 270                                          signin_metrics::SIGNED_IN, 1);
 271
 272   // After opting out the initialized state remains; eligibility changes.
 273   promo()->OptOut();
 274   promo()->CheckPromoEligibilityForTesting();
 275   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Initialized",
 276                                         signin_metrics::INITIALIZED, 1);
 277   histogram_tester()->ExpectBucketCount("Signin.XDevicePromo.Eligibility",
 278                                         signin_metrics::OPTED_OUT, 1);
 279 }
 280
 281 TEST_F(CrossDevicePromoTest, SignedInAndOut) {
 282   InitPromoVariation();
 283
 284   {
 285     base::HistogramTester test_signed_in;
 286     signin_manager()->SignIn("12345", "foo@bar.com", "password");
 287     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 288     test_signed_in.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 289                                       signin_metrics::SIGNED_IN, 1);
 290   }
 291
 292   {
 293     base::HistogramTester test_signed_out;
 294     signin_manager()->SignOut(signin_metrics::SIGNOUT_TEST);
 295     promo()->CheckPromoEligibilityForTesting();
 296     test_signed_out.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 297                                        signin_metrics::NOT_SINGLE_GAIA_ACCOUNT,
 298                                        1);
 299   }
 300 }
 301
 302 TEST_F(CrossDevicePromoTest, TrackAccountsInCookie) {
 303   InitPromoVariation();
 304   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 305
 306   ASSERT_FALSE(prefs()->HasPrefPath(
 307       prefs::kCrossDevicePromoObservedSingleAccountCookie));
 308   std::vector<gaia::ListedAccount> accounts;
 309
 310   // Setting a single cookie sets the time.
 311   base::Time before_setting_cookies = base::Time::Now();
 312   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 313   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 314   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 315   base::RunLoop().RunUntilIdle();
 316
 317   base::Time after_setting_cookies = base::Time::Now();
 318   EXPECT_TRUE(prefs()->HasPrefPath(
 319       prefs::kCrossDevicePromoObservedSingleAccountCookie));
 320   EXPECT_LE(
 321       before_setting_cookies.ToInternalValue(),
 322       prefs()->GetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie));
 323   EXPECT_GE(
 324       after_setting_cookies.ToInternalValue(),
 325       prefs()->GetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie));
 326
 327   // A single cookie a second time doesn't change the time.
 328   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 329   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 330   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 331   base::RunLoop().RunUntilIdle();
 332
 333   EXPECT_TRUE(prefs()->HasPrefPath(
 334       prefs::kCrossDevicePromoObservedSingleAccountCookie));
 335   EXPECT_GE(
 336       after_setting_cookies.ToInternalValue(),
 337       prefs()->GetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie));
 338
 339   // Setting accounts with an auth error doesn't change the time.
 340   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 341   cookie_manager_service()->SetListAccountsResponseWebLoginRequired();
 342   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 343   base::RunLoop().RunUntilIdle();
 344
 345   EXPECT_TRUE(prefs()->HasPrefPath(
 346       prefs::kCrossDevicePromoObservedSingleAccountCookie));
 347   EXPECT_LE(
 348       before_setting_cookies.ToInternalValue(),
 349       prefs()->GetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie));
 350   EXPECT_GE(
 351       after_setting_cookies.ToInternalValue(),
 352       prefs()->GetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie));
 353
 354   // Seeing zero accounts clears the pref.
 355   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 356   cookie_manager_service()->SetListAccountsResponseNoAccounts();
 357   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 358   base::RunLoop().RunUntilIdle();
 359
 360   EXPECT_FALSE(prefs()->HasPrefPath(
 361       prefs::kCrossDevicePromoObservedSingleAccountCookie));
 362 }
 363
 364 TEST_F(CrossDevicePromoTest, SingleAccountEligibility) {
 365   InitPromoVariation();
 366
 367   {
 368     base::HistogramTester test_single_account;
 369     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 370     test_single_account.ExpectUniqueSample(
 371         "Signin.XDevicePromo.Eligibility",
 372         signin_metrics::NOT_SINGLE_GAIA_ACCOUNT, 1);
 373   }
 374
 375   // Notice a single account.
 376   {
 377     base::HistogramTester test_single_account;
 378     std::vector<gaia::ListedAccount> accounts;
 379     cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 380     cookie_manager_service()->SetListAccountsResponseOneAccount("a@b.com", "1");
 381     EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 382     base::RunLoop().RunUntilIdle();
 383
 384     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 385     test_single_account.ExpectUniqueSample(
 386         "Signin.XDevicePromo.Eligibility",
 387         signin_metrics::UNKNOWN_COUNT_DEVICES, 1);
 388   }
 389
 390   // Set a single account that hasn't been around for "long enough".
 391   {
 392     base::HistogramTester test_single_account;
 393     prefs()->SetInt64(prefs::kCrossDevicePromoObservedSingleAccountCookie,
 394                       InTwoHours());
 395     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 396     test_single_account.ExpectBucketCount(
 397         "Signin.XDevicePromo.Eligibility",
 398         signin_metrics::NOT_SINGLE_GAIA_ACCOUNT, 1);
 399   }
 400 }
 401
 402 TEST_F(CrossDevicePromoTest, NumDevicesEligibility) {
 403   // Start with a variation, signed in, and one account in the cookie jar.
 404   InitPromoVariation();
 405   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 406   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 407   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 408   std::vector<gaia::ListedAccount> accounts;
 409   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 410   base::RunLoop().RunUntilIdle();
 411
 412   // Ensure we appropriate schedule a check for device activity.
 413   {
 414     base::HistogramTester test_missing_list_devices;
 415     int64 earliest_time_to_check_list_devices =
 416         base::Time::Now().ToInternalValue();
 417     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 418     int64 latest_time_to_check_list_devices = InTwoHours();
 419     test_missing_list_devices.ExpectUniqueSample(
 420         "Signin.XDevicePromo.Eligibility",
 421         signin_metrics::UNKNOWN_COUNT_DEVICES, 1);
 422     EXPECT_TRUE(
 423         prefs()->HasPrefPath(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 424     int64 when_to_check_list_devices =
 425         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime);
 426     EXPECT_LT(earliest_time_to_check_list_devices, when_to_check_list_devices);
 427     EXPECT_GT(latest_time_to_check_list_devices, when_to_check_list_devices);
 428   }
 429
 430   // Don't reschedule the device activity check if there's one pending.
 431   {
 432     base::HistogramTester test_unknown_devices;
 433     int64 list_devices_time = InTwoHours();
 434     prefs()->SetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime,
 435                       list_devices_time);
 436     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 437     test_unknown_devices.ExpectUniqueSample(
 438         "Signin.XDevicePromo.Eligibility",
 439         signin_metrics::UNKNOWN_COUNT_DEVICES, 1);
 440     // The scheduled time to fetch device activity should not have changed.
 441     EXPECT_EQ(
 442         list_devices_time,
 443         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 444   }
 445
 446   // Execute the device activity fetch if it's time.
 447   {
 448     base::HistogramTester test_unknown_devices;
 449     prefs()->SetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime,
 450                       base::Time::Now().ToInternalValue());
 451     // The DeviceActivityFetcher will return an error to the promo service.
 452     fetcher_factory()->SetFakeResponse(
 453         GaiaUrls::GetInstance()->oauth2_iframe_url(), "not json", net::HTTP_OK,
 454         net::URLRequestStatus::SUCCESS);
 455     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 456     base::RunLoop().RunUntilIdle();
 457     test_unknown_devices.ExpectUniqueSample(
 458         "Signin.XDevicePromo.Eligibility",
 459         signin_metrics::ERROR_FETCHING_DEVICE_ACTIVITY, 1);
 460   }
 461 }
 462
 463 TEST_F(CrossDevicePromoTest, ThrottleDeviceActivityCall) {
 464   // Start with a variation (fully throttled), signed in, one account in cookie.
 465   VariationsMap variations_params;
 466   variations_params[
 467       CrossDevicePromo::kParamHoursBetweenDeviceActivityChecks] = "1";
 468   variations_params[
 469       CrossDevicePromo::kParamDaysToVerifySingleUserProfile] = "0";
 470   variations_params[
 471       CrossDevicePromo::kParamMinutesBetweenBrowsingSessions] = "0";
 472   variations_params[
 473       CrossDevicePromo::kParamMinutesMaxContextSwitchDuration] = "10";
 474   variations_params[
 475       CrossDevicePromo::kParamRPCThrottle] = "100";
 476   EXPECT_TRUE(variations::AssociateVariationParams(
 477       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A", variations_params));
 478   base::FieldTrialList::CreateFieldTrial(
 479       CrossDevicePromo::kCrossDevicePromoFieldTrial, "A");
 480
 481   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 482   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 483   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 484   std::vector<gaia::ListedAccount> accounts;
 485   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 486   base::RunLoop().RunUntilIdle();
 487
 488   // Ensure device activity fetches get throttled.
 489   {
 490     base::HistogramTester test_throttle_rpc;
 491     prefs()->SetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime,
 492                       base::Time::Now().ToInternalValue());
 493     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 494     test_throttle_rpc.ExpectUniqueSample(
 495         "Signin.XDevicePromo.Eligibility",
 496         signin_metrics::THROTTLED_FETCHING_DEVICE_ACTIVITY, 1);
 497   }
 498 }
 499
 500 TEST_F(CrossDevicePromoTest, NumDevicesKnown) {
 501   // Start with a variation, signed in, and one account, fetch device activity
 502   // in two hours.
 503   InitPromoVariation();
 504   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 505   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 506   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 507   std::vector<gaia::ListedAccount> accounts;
 508   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 509   base::RunLoop().RunUntilIdle();
 510   prefs()->SetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime,
 511                     InTwoHours());
 512
 513   // Verify that knowing there are no devices for this account logs the
 514   // appropriate metric for ineligibility.
 515   {
 516     base::HistogramTester test_no_devices;
 517     prefs()->SetInteger(prefs::kCrossDevicePromoNumDevices, 0);
 518     EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 519     test_no_devices.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 520                                        signin_metrics::ZERO_DEVICES, 1);
 521   }
 522
 523   // Verify that knowing there is another device for this account results in the
 524   // promo being eligible to be shown.
 525   {
 526     prefs()->SetInteger(prefs::kCrossDevicePromoNumDevices, 1);
 527     EXPECT_TRUE(promo()->CheckPromoEligibilityForTesting());
 528   }
 529 }
 530
 531 TEST_F(CrossDevicePromoTest, FetchDeviceResults) {
 532   // Start with a variation, signed in, and one account, fetch device activity
 533   // in 2 hours.
 534   InitPromoVariation();
 535   EXPECT_FALSE(promo()->CheckPromoEligibilityForTesting());
 536   cookie_manager_service()->set_list_accounts_fetched_once_for_testing(false);
 537   cookie_manager_service()->SetListAccountsResponseOneAccount("f@bar.com", "1");
 538   std::vector<gaia::ListedAccount> accounts;
 539   EXPECT_FALSE(cookie_manager_service()->ListAccounts(&accounts));
 540   base::RunLoop().RunUntilIdle();
 541   prefs()->SetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime,
 542                     base::Time::Now().ToInternalValue());
 543   prefs()->SetInteger(prefs::kCrossDevicePromoNumDevices, 1);
 544
 545   // Verify that if the device activity fetcher returns zero devices the
 546   // eligibility metric will report a ZERO_DEVICES event, and will not report
 547   // the promo as eligible to be shown.
 548   {
 549     base::HistogramTester test_no_devices;
 550     std::vector<DeviceActivityFetcher::DeviceActivity> devices;
 551     int64 in_two_hours = InTwoHours();
 552     promo()->OnFetchDeviceActivitySuccess(devices);
 553     EXPECT_LE(
 554         in_two_hours,
 555         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 556     EXPECT_EQ(0, prefs()->GetInteger(prefs::kCrossDevicePromoNumDevices));
 557     test_no_devices.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 558                                        signin_metrics::ZERO_DEVICES, 1);
 559   }
 560
 561   // Verify that if the device activity fetcher returns one device that was
 562   // recently active, the promo is marked as eligible and the eligibility
 563   // metric reports an ELIGIBLE event.
 564   {
 565     CrossDevicePromoObserver observer(promo());
 566     EXPECT_FALSE(observer.is_eligible());
 567     base::HistogramTester test_one_device;
 568     std::vector<DeviceActivityFetcher::DeviceActivity> devices;
 569     base::Time device_last_active =
 570         base::Time::Now() - base::TimeDelta::FromMinutes(4);
 571     DeviceActivityFetcher::DeviceActivity device;
 572     device.last_active = device_last_active;
 573     device.name = "Aslan";
 574     devices.push_back(device);
 575
 576     int64 in_two_hours = InTwoHours();
 577     promo()->OnFetchDeviceActivitySuccess(devices);
 578     EXPECT_LE(
 579         in_two_hours,
 580         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 581     EXPECT_EQ(1, prefs()->GetInteger(prefs::kCrossDevicePromoNumDevices));
 582     EXPECT_EQ(device_last_active.ToInternalValue(),
 583               prefs()->GetInt64(prefs::kCrossDevicePromoLastDeviceActiveTime));
 584     EXPECT_TRUE(prefs()->GetBoolean(prefs::kCrossDevicePromoShouldBeShown));
 585     test_one_device.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 586                                        signin_metrics::ELIGIBLE, 1);
 587     EXPECT_TRUE(observer.is_eligible());
 588     EXPECT_EQ(1, observer.times_set_eligible());
 589   }
 590
 591   // Verify that if the device activity fetcher returns one device that was not
 592   // recently active then the eligibility metric will report a NO_ACTIVE_DEVICES
 593   // event, and will not report the promo as eligible to be shown.
 594   {
 595     CrossDevicePromoObserver observer(promo());
 596     EXPECT_FALSE(observer.is_eligible());
 597     base::HistogramTester test_one_device;
 598     std::vector<DeviceActivityFetcher::DeviceActivity> devices;
 599     base::Time device_last_active =
 600         base::Time::Now() - base::TimeDelta::FromMinutes(30);
 601     DeviceActivityFetcher::DeviceActivity device;
 602     device.last_active = device_last_active;
 603     device.name = "Aslan";
 604     devices.push_back(device);
 605
 606     int64 in_two_hours = InTwoHours();
 607     promo()->OnFetchDeviceActivitySuccess(devices);
 608     EXPECT_LE(
 609         in_two_hours,
 610         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 611     EXPECT_EQ(1, prefs()->GetInteger(prefs::kCrossDevicePromoNumDevices));
 612     EXPECT_EQ(device_last_active.ToInternalValue(),
 613               prefs()->GetInt64(prefs::kCrossDevicePromoLastDeviceActiveTime));
 614     EXPECT_FALSE(prefs()->GetBoolean(prefs::kCrossDevicePromoShouldBeShown));
 615     test_one_device.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 616                                        signin_metrics::NO_ACTIVE_DEVICES, 1);
 617     EXPECT_FALSE(observer.is_eligible());
 618   }
 619
 620   // Verify that if the device activity fetcher returns two devices and one was
 621   // recently active, that the promo is eligible to be shown and the last active
 622   // time is stored properly.
 623   {
 624     CrossDevicePromoObserver observer(promo());
 625     EXPECT_FALSE(observer.is_eligible());
 626     base::HistogramTester test_two_devices;
 627     std::vector<DeviceActivityFetcher::DeviceActivity> devices;
 628     base::Time device1_last_active =
 629         base::Time::Now() - base::TimeDelta::FromMinutes(30);
 630     base::Time device2_last_active =
 631         base::Time::Now() - base::TimeDelta::FromMinutes(3);
 632     DeviceActivityFetcher::DeviceActivity device1;
 633     device1.last_active = device1_last_active;
 634     device1.name = "Aslan";
 635     devices.push_back(device1);
 636     DeviceActivityFetcher::DeviceActivity device2;
 637     device2.last_active = device2_last_active;
 638     device2.name = "Balrog";
 639     devices.push_back(device2);
 640
 641     int64 in_two_hours = InTwoHours();
 642     promo()->OnFetchDeviceActivitySuccess(devices);
 643     EXPECT_LE(
 644         in_two_hours,
 645         prefs()->GetInt64(prefs::kCrossDevicePromoNextFetchListDevicesTime));
 646     EXPECT_EQ(2, prefs()->GetInteger(prefs::kCrossDevicePromoNumDevices));
 647     EXPECT_EQ(device2_last_active.ToInternalValue(),
 648               prefs()->GetInt64(prefs::kCrossDevicePromoLastDeviceActiveTime));
 649     EXPECT_TRUE(prefs()->GetBoolean(prefs::kCrossDevicePromoShouldBeShown));
 650     test_two_devices.ExpectUniqueSample("Signin.XDevicePromo.Eligibility",
 651                                         signin_metrics::ELIGIBLE, 1);
 652     EXPECT_TRUE(observer.is_eligible());
 653     EXPECT_EQ(1, observer.times_set_eligible());
 654   }
 655 }