src/components/search_provider_logos/logo_tracker_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/search_provider_logos/logo_tracker.h"
   6
   7 #include <vector>
   8
   9 #include "base/base64.h"
  10 #include "base/bind.h"
  11 #include "base/callback.h"
  12 #include "base/files/file_path.h"
  13 #include "base/json/json_writer.h"
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/scoped_vector.h"
  16 #include "base/run_loop.h"
  17 #include "base/strings/string_piece.h"
  18 #include "base/strings/stringprintf.h"
  19 #include "base/test/simple_test_clock.h"
  20 #include "base/time/time.h"
  21 #include "base/values.h"
  22 #include "components/search_provider_logos/google_logo_api.h"
  23 #include "net/base/url_util.h"
  24 #include "net/http/http_response_headers.h"
  25 #include "net/http/http_status_code.h"
  26 #include "net/url_request/test_url_fetcher_factory.h"
  27 #include "net/url_request/url_request_status.h"
  28 #include "net/url_request/url_request_test_util.h"
  29 #include "testing/gmock/include/gmock/gmock.h"
  30 #include "testing/gtest/include/gtest/gtest.h"
  31 #include "ui/gfx/image/image.h"
  32
  33 using ::testing::_;
  34 using ::testing::AnyNumber;
  35 using ::testing::AtMost;
  36 using ::testing::InSequence;
  37 using ::testing::Invoke;
  38 using ::testing::Mock;
  39 using ::testing::NiceMock;
  40 using ::testing::Return;
  41
  42 namespace search_provider_logos {
  43
  44 namespace {
  45
  46 bool AreImagesSameSize(const SkBitmap& bitmap1, const SkBitmap& bitmap2) {
  47   return bitmap1.width() == bitmap2.width() &&
  48          bitmap1.height() == bitmap2.height();
  49 }
  50
  51 scoped_refptr<base::RefCountedString> EncodeBitmapAsPNG(
  52     const SkBitmap& bitmap) {
  53   scoped_refptr<base::RefCountedMemory> png_bytes =
  54       gfx::Image::CreateFrom1xBitmap(bitmap).As1xPNGBytes();
  55   scoped_refptr<base::RefCountedString> str = new base::RefCountedString();
  56   str->data().assign(png_bytes->front_as<char>(), png_bytes->size());
  57   return str;
  58 }
  59
  60 std::string EncodeBitmapAsPNGBase64(const SkBitmap& bitmap) {
  61   scoped_refptr<base::RefCountedString> png_bytes = EncodeBitmapAsPNG(bitmap);
  62   std::string encoded_image_base64;
  63   base::Base64Encode(png_bytes->data(), &encoded_image_base64);
  64   return encoded_image_base64;
  65 }
  66
  67 SkBitmap MakeBitmap(int width, int height) {
  68   SkBitmap bitmap;
  69   bitmap.allocN32Pixels(width, height);
  70   bitmap.eraseColor(SK_ColorBLUE);
  71   return bitmap;
  72 }
  73
  74 EncodedLogo EncodeLogo(const Logo& logo) {
  75   EncodedLogo encoded_logo;
  76   encoded_logo.encoded_image = EncodeBitmapAsPNG(logo.image);
  77   encoded_logo.metadata = logo.metadata;
  78   return encoded_logo;
  79 }
  80
  81 Logo DecodeLogo(const EncodedLogo& encoded_logo) {
  82   Logo logo;
  83   logo.image = gfx::Image::CreateFrom1xPNGBytes(
  84       encoded_logo.encoded_image->front(),
  85       encoded_logo.encoded_image->size()).AsBitmap();
  86   logo.metadata = encoded_logo.metadata;
  87   return logo;
  88 }
  89
  90 Logo GetSampleLogo(const GURL& logo_url, base::Time response_time) {
  91   Logo logo;
  92   logo.image = MakeBitmap(2, 5);
  93   logo.metadata.can_show_after_expiration = false;
  94   logo.metadata.expiration_time =
  95       response_time + base::TimeDelta::FromHours(19);
  96   logo.metadata.fingerprint = "8bc33a80";
  97   logo.metadata.source_url = logo_url.spec();
  98   logo.metadata.on_click_url = "http://www.google.com/search?q=potato";
  99   logo.metadata.alt_text = "A logo about potatoes";
 100   logo.metadata.mime_type = "image/png";
 101   return logo;
 102 }
 103
 104 Logo GetSampleLogo2(const GURL& logo_url, base::Time response_time) {
 105   Logo logo;
 106   logo.image = MakeBitmap(4, 3);
 107   logo.metadata.can_show_after_expiration = true;
 108   logo.metadata.expiration_time = base::Time();
 109   logo.metadata.fingerprint = "71082741021409127";
 110   logo.metadata.source_url = logo_url.spec();
 111   logo.metadata.on_click_url = "http://example.com/page25";
 112   logo.metadata.alt_text = "The logo for example.com";
 113   logo.metadata.mime_type = "image/png";
 114   return logo;
 115 }
 116
 117 std::string MakeServerResponse(
 118     const SkBitmap& image,
 119     const std::string& on_click_url,
 120     const std::string& alt_text,
 121     const std::string& mime_type,
 122     const std::string& fingerprint,
 123     base::TimeDelta time_to_live) {
 124   base::DictionaryValue dict;
 125   if (!image.isNull()) {
 126     dict.SetString("update.logo.data", EncodeBitmapAsPNGBase64(image));
 127   }
 128
 129   dict.SetString("update.logo.target", on_click_url);
 130   dict.SetString("update.logo.alt", alt_text);
 131   dict.SetString("update.logo.mime_type", mime_type);
 132   dict.SetString("update.logo.fingerprint", fingerprint);
 133   if (time_to_live.ToInternalValue() != 0)
 134     dict.SetInteger("update.logo.time_to_live",
 135                     static_cast<int>(time_to_live.InMilliseconds()));
 136
 137   std::string output;
 138   base::JSONWriter::Write(&dict, &output);
 139   return output;
 140 }
 141
 142 std::string MakeServerResponse(const Logo& logo, base::TimeDelta time_to_live) {
 143   return MakeServerResponse(logo.image,
 144                             logo.metadata.on_click_url,
 145                             logo.metadata.alt_text,
 146                             logo.metadata.mime_type,
 147                             logo.metadata.fingerprint,
 148                             time_to_live);
 149 }
 150
 151 void ExpectLogosEqual(const Logo* expected_logo,
 152                       const Logo* actual_logo) {
 153   if (!expected_logo) {
 154     ASSERT_FALSE(actual_logo);
 155     return;
 156   }
 157   ASSERT_TRUE(actual_logo);
 158   EXPECT_TRUE(AreImagesSameSize(expected_logo->image, actual_logo->image));
 159   EXPECT_EQ(expected_logo->metadata.on_click_url,
 160             actual_logo->metadata.on_click_url);
 161   EXPECT_EQ(expected_logo->metadata.source_url,
 162             actual_logo->metadata.source_url);
 163   EXPECT_EQ(expected_logo->metadata.fingerprint,
 164             actual_logo->metadata.fingerprint);
 165   EXPECT_EQ(expected_logo->metadata.can_show_after_expiration,
 166             actual_logo->metadata.can_show_after_expiration);
 167 }
 168
 169 void ExpectLogosEqual(const Logo* expected_logo,
 170                       const EncodedLogo* actual_encoded_logo) {
 171   Logo actual_logo;
 172   if (actual_encoded_logo)
 173     actual_logo = DecodeLogo(*actual_encoded_logo);
 174   ExpectLogosEqual(expected_logo, actual_encoded_logo ? &actual_logo : NULL);
 175 }
 176
 177 ACTION_P(ExpectLogosEqualAction, expected_logo) {
 178   ExpectLogosEqual(expected_logo, arg0);
 179 }
 180
 181 class MockLogoCache : public LogoCache {
 182  public:
 183   MockLogoCache() : LogoCache(base::FilePath()) {
 184     // Delegate actions to the *Internal() methods by default.
 185     ON_CALL(*this, UpdateCachedLogoMetadata(_)).WillByDefault(
 186         Invoke(this, &MockLogoCache::UpdateCachedLogoMetadataInternal));
 187     ON_CALL(*this, GetCachedLogoMetadata()).WillByDefault(
 188         Invoke(this, &MockLogoCache::GetCachedLogoMetadataInternal));
 189     ON_CALL(*this, SetCachedLogo(_))
 190         .WillByDefault(Invoke(this, &MockLogoCache::SetCachedLogoInternal));
 191   }
 192
 193   MOCK_METHOD1(UpdateCachedLogoMetadata, void(const LogoMetadata& metadata));
 194   MOCK_METHOD0(GetCachedLogoMetadata, const LogoMetadata*());
 195   MOCK_METHOD1(SetCachedLogo, void(const EncodedLogo* logo));
 196   // GetCachedLogo() can't be mocked since it returns a scoped_ptr, which is
 197   // non-copyable. Instead create a method that's pinged when GetCachedLogo() is
 198   // called.
 199   MOCK_METHOD0(OnGetCachedLogo, void());
 200
 201   void EncodeAndSetCachedLogo(const Logo& logo) {
 202     EncodedLogo encoded_logo = EncodeLogo(logo);
 203     SetCachedLogo(&encoded_logo);
 204   }
 205
 206   void ExpectSetCachedLogo(const Logo* expected_logo) {
 207     Mock::VerifyAndClearExpectations(this);
 208     EXPECT_CALL(*this, SetCachedLogo(_))
 209         .WillOnce(ExpectLogosEqualAction(expected_logo));
 210   }
 211
 212   void UpdateCachedLogoMetadataInternal(const LogoMetadata& metadata) {
 213     metadata_.reset(new LogoMetadata(metadata));
 214   }
 215
 216   virtual const LogoMetadata* GetCachedLogoMetadataInternal() {
 217     return metadata_.get();
 218   }
 219
 220   virtual void SetCachedLogoInternal(const EncodedLogo* logo) {
 221     logo_.reset(logo ? new EncodedLogo(*logo) : NULL);
 222     metadata_.reset(logo ? new LogoMetadata(logo->metadata) : NULL);
 223   }
 224
 225   virtual scoped_ptr<EncodedLogo> GetCachedLogo() OVERRIDE {
 226     OnGetCachedLogo();
 227     return make_scoped_ptr(logo_ ? new EncodedLogo(*logo_) : NULL);
 228   }
 229
 230  private:
 231   scoped_ptr<LogoMetadata> metadata_;
 232   scoped_ptr<EncodedLogo> logo_;
 233 };
 234
 235 class MockLogoObserver : public LogoObserver {
 236  public:
 237   virtual ~MockLogoObserver() {}
 238
 239   void ExpectNoLogo() {
 240     Mock::VerifyAndClearExpectations(this);
 241     EXPECT_CALL(*this, OnLogoAvailable(_, _)).Times(0);
 242     EXPECT_CALL(*this, OnObserverRemoved()).Times(1);
 243   }
 244
 245   void ExpectCachedLogo(const Logo* expected_cached_logo) {
 246     Mock::VerifyAndClearExpectations(this);
 247     EXPECT_CALL(*this, OnLogoAvailable(_, true))
 248         .WillOnce(ExpectLogosEqualAction(expected_cached_logo));
 249     EXPECT_CALL(*this, OnLogoAvailable(_, false)).Times(0);
 250     EXPECT_CALL(*this, OnObserverRemoved()).Times(1);
 251   }
 252
 253   void ExpectFreshLogo(const Logo* expected_fresh_logo) {
 254     Mock::VerifyAndClearExpectations(this);
 255     EXPECT_CALL(*this, OnLogoAvailable(_, true)).Times(0);
 256     EXPECT_CALL(*this, OnLogoAvailable(NULL, true));
 257     EXPECT_CALL(*this, OnLogoAvailable(_, false))
 258         .WillOnce(ExpectLogosEqualAction(expected_fresh_logo));
 259     EXPECT_CALL(*this, OnObserverRemoved()).Times(1);
 260   }
 261
 262   void ExpectCachedAndFreshLogos(const Logo* expected_cached_logo,
 263                                  const Logo* expected_fresh_logo) {
 264     Mock::VerifyAndClearExpectations(this);
 265     InSequence dummy;
 266     EXPECT_CALL(*this, OnLogoAvailable(_, true))
 267         .WillOnce(ExpectLogosEqualAction(expected_cached_logo));
 268     EXPECT_CALL(*this, OnLogoAvailable(_, false))
 269         .WillOnce(ExpectLogosEqualAction(expected_fresh_logo));
 270     EXPECT_CALL(*this, OnObserverRemoved()).Times(1);
 271   }
 272
 273   MOCK_METHOD2(OnLogoAvailable, void(const Logo*, bool));
 274   MOCK_METHOD0(OnObserverRemoved, void());
 275 };
 276
 277 class TestLogoDelegate : public LogoDelegate {
 278  public:
 279   TestLogoDelegate() {}
 280   virtual ~TestLogoDelegate() {}
 281
 282   virtual void DecodeUntrustedImage(
 283       const scoped_refptr<base::RefCountedString>& encoded_image,
 284       base::Callback<void(const SkBitmap&)> image_decoded_callback) OVERRIDE {
 285     SkBitmap bitmap =
 286         gfx::Image::CreateFrom1xPNGBytes(encoded_image->front(),
 287                                          encoded_image->size()).AsBitmap();
 288     base::MessageLoopProxy::current()->PostTask(
 289         FROM_HERE, base::Bind(image_decoded_callback, bitmap));
 290   }
 291 };
 292
 293 class LogoTrackerTest : public ::testing::Test {
 294  protected:
 295   LogoTrackerTest()
 296       : message_loop_(new base::MessageLoop()),
 297         logo_url_("https://google.com/doodleoftheday?size=hp"),
 298         test_clock_(new base::SimpleTestClock()),
 299         logo_cache_(new NiceMock<MockLogoCache>()),
 300         fake_url_fetcher_factory_(NULL) {
 301     test_clock_->SetNow(base::Time::FromJsTime(GG_INT64_C(1388686828000)));
 302     logo_tracker_ = new LogoTracker(
 303         base::FilePath(),
 304         base::MessageLoopProxy::current(),
 305         base::MessageLoopProxy::current(),
 306         new net::TestURLRequestContextGetter(base::MessageLoopProxy::current()),
 307         scoped_ptr<LogoDelegate>(new TestLogoDelegate()));
 308     logo_tracker_->SetServerAPI(logo_url_,
 309                                 base::Bind(&GoogleParseLogoResponse),
 310                                 base::Bind(&GoogleAppendFingerprintToLogoURL));
 311     logo_tracker_->SetClockForTests(scoped_ptr<base::Clock>(test_clock_));
 312     logo_tracker_->SetLogoCacheForTests(scoped_ptr<LogoCache>(logo_cache_));
 313   }
 314
 315   virtual void TearDown() {
 316     // logo_tracker_ owns logo_cache_, which gets destructed on the file thread
 317     // after logo_tracker_'s destruction. Ensure that logo_cache_ is actually
 318     // destructed before the test ends to make gmock happy.
 319     delete logo_tracker_;
 320     message_loop_->RunUntilIdle();
 321   }
 322
 323   // Returns the response that the server would send for the given logo.
 324   std::string ServerResponse(const Logo& logo) const;
 325
 326   // Sets the response to be returned when the LogoTracker fetches the logo.
 327   void SetServerResponse(const std::string& response,
 328                          net::URLRequestStatus::Status request_status =
 329                              net::URLRequestStatus::SUCCESS,
 330                          net::HttpStatusCode response_code = net::HTTP_OK);
 331
 332   // Sets the response to be returned when the LogoTracker fetches the logo and
 333   // provides the given fingerprint.
 334   void SetServerResponseWhenFingerprint(
 335       const std::string& fingerprint,
 336       const std::string& response_when_fingerprint,
 337       net::URLRequestStatus::Status request_status =
 338           net::URLRequestStatus::SUCCESS,
 339       net::HttpStatusCode response_code = net::HTTP_OK);
 340
 341   // Calls logo_tracker_->GetLogo() with listener_ and waits for the
 342   // asynchronous response(s).
 343   void GetLogo();
 344
 345   scoped_ptr<base::MessageLoop> message_loop_;
 346   GURL logo_url_;
 347   base::SimpleTestClock* test_clock_;
 348   NiceMock<MockLogoCache>* logo_cache_;
 349   net::FakeURLFetcherFactory fake_url_fetcher_factory_;
 350   LogoTracker* logo_tracker_;
 351   NiceMock<MockLogoObserver> observer_;
 352 };
 353
 354 std::string LogoTrackerTest::ServerResponse(const Logo& logo) const {
 355   base::TimeDelta time_to_live;
 356   if (!logo.metadata.expiration_time.is_null())
 357     time_to_live = logo.metadata.expiration_time - test_clock_->Now();
 358   return MakeServerResponse(logo, time_to_live);
 359 }
 360
 361 void LogoTrackerTest::SetServerResponse(
 362     const std::string& response,
 363     net::URLRequestStatus::Status request_status,
 364     net::HttpStatusCode response_code) {
 365   fake_url_fetcher_factory_.SetFakeResponse(
 366       logo_url_, response, response_code, request_status);
 367 }
 368
 369 void LogoTrackerTest::SetServerResponseWhenFingerprint(
 370     const std::string& fingerprint,
 371     const std::string& response_when_fingerprint,
 372     net::URLRequestStatus::Status request_status,
 373     net::HttpStatusCode response_code) {
 374   GURL url_with_fp = GoogleAppendFingerprintToLogoURL(logo_url_, fingerprint);
 375   fake_url_fetcher_factory_.SetFakeResponse(
 376       url_with_fp, response_when_fingerprint, response_code, request_status);
 377 }
 378
 379 void LogoTrackerTest::GetLogo() {
 380   logo_tracker_->GetLogo(&observer_);
 381   base::RunLoop().RunUntilIdle();
 382 }
 383
 384 // Tests -----------------------------------------------------------------------
 385
 386 TEST_F(LogoTrackerTest, FingerprintURLHasColon) {
 387   GURL url_with_fp = GoogleAppendFingerprintToLogoURL(
 388       GURL("http://logourl.com/path"), "abc123");
 389   EXPECT_EQ("http://logourl.com/path?async=es_dfp:abc123", url_with_fp.spec());
 390
 391   url_with_fp = GoogleAppendFingerprintToLogoURL(
 392       GURL("http://logourl.com/?a=b"), "cafe0");
 393   EXPECT_EQ("http://logourl.com/?a=b&async=es_dfp:cafe0", url_with_fp.spec());
 394 }
 395
 396 TEST_F(LogoTrackerTest, DownloadAndCacheLogo) {
 397   Logo logo = GetSampleLogo(logo_url_, test_clock_->Now());
 398   SetServerResponse(ServerResponse(logo));
 399   logo_cache_->ExpectSetCachedLogo(&logo);
 400   observer_.ExpectFreshLogo(&logo);
 401   GetLogo();
 402 }
 403
 404 TEST_F(LogoTrackerTest, EmptyCacheAndFailedDownload) {
 405   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 406   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 407   EXPECT_CALL(*logo_cache_, SetCachedLogo(NULL)).Times(AnyNumber());
 408
 409   SetServerResponse("server is borked");
 410   observer_.ExpectCachedLogo(NULL);
 411   GetLogo();
 412
 413   SetServerResponse("", net::URLRequestStatus::FAILED, net::HTTP_OK);
 414   observer_.ExpectCachedLogo(NULL);
 415   GetLogo();
 416
 417   SetServerResponse("", net::URLRequestStatus::SUCCESS, net::HTTP_BAD_GATEWAY);
 418   observer_.ExpectCachedLogo(NULL);
 419   GetLogo();
 420 }
 421
 422 TEST_F(LogoTrackerTest, AcceptMinimalLogoResponse) {
 423   Logo logo;
 424   logo.image = MakeBitmap(1, 2);
 425   logo.metadata.source_url = logo_url_.spec();
 426   logo.metadata.can_show_after_expiration = true;
 427
 428   std::string response = ")]}' {\"update\":{\"logo\":{\"data\":\"" +
 429                          EncodeBitmapAsPNGBase64(logo.image) +
 430                          "\",\"mime_type\":\"image/png\"}}}";
 431
 432   SetServerResponse(response);
 433   observer_.ExpectFreshLogo(&logo);
 434   GetLogo();
 435 }
 436
 437 TEST_F(LogoTrackerTest, ReturnCachedLogo) {
 438   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 439   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 440   SetServerResponseWhenFingerprint(cached_logo.metadata.fingerprint,
 441                                    "",
 442                                    net::URLRequestStatus::FAILED,
 443                                    net::HTTP_OK);
 444
 445   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 446   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 447   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 448   observer_.ExpectCachedLogo(&cached_logo);
 449   GetLogo();
 450 }
 451
 452 TEST_F(LogoTrackerTest, ValidateCachedLogoFingerprint) {
 453   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 454   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 455
 456   Logo fresh_logo = cached_logo;
 457   fresh_logo.image.reset();
 458   fresh_logo.metadata.expiration_time =
 459       test_clock_->Now() + base::TimeDelta::FromDays(8);
 460   SetServerResponseWhenFingerprint(fresh_logo.metadata.fingerprint,
 461                                    ServerResponse(fresh_logo));
 462
 463   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(1);
 464   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 465   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 466   observer_.ExpectCachedLogo(&cached_logo);
 467
 468   GetLogo();
 469
 470   EXPECT_TRUE(logo_cache_->GetCachedLogoMetadata() != NULL);
 471   EXPECT_EQ(logo_cache_->GetCachedLogoMetadata()->expiration_time,
 472             fresh_logo.metadata.expiration_time);
 473 }
 474
 475 TEST_F(LogoTrackerTest, UpdateCachedLogo) {
 476   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 477   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 478
 479   Logo fresh_logo = GetSampleLogo2(logo_url_, test_clock_->Now());
 480   SetServerResponseWhenFingerprint(cached_logo.metadata.fingerprint,
 481                                    ServerResponse(fresh_logo));
 482
 483   logo_cache_->ExpectSetCachedLogo(&fresh_logo);
 484   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 485   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 486   observer_.ExpectCachedAndFreshLogos(&cached_logo, &fresh_logo);
 487
 488   GetLogo();
 489 }
 490
 491 TEST_F(LogoTrackerTest, InvalidateCachedLogo) {
 492   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 493   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 494
 495   // This response means there's no current logo.
 496   SetServerResponseWhenFingerprint(cached_logo.metadata.fingerprint,
 497                                    ")]}' {\"update\":{}}");
 498
 499   logo_cache_->ExpectSetCachedLogo(NULL);
 500   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 501   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 502   observer_.ExpectCachedAndFreshLogos(&cached_logo, NULL);
 503
 504   GetLogo();
 505 }
 506
 507 TEST_F(LogoTrackerTest, DeleteCachedLogoFromOldUrl) {
 508   SetServerResponse("", net::URLRequestStatus::FAILED, net::HTTP_OK);
 509   Logo cached_logo =
 510       GetSampleLogo(GURL("http://oldsearchprovider.com"), test_clock_->Now());
 511   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 512
 513   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 514   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 515   EXPECT_CALL(*logo_cache_, SetCachedLogo(NULL)).Times(AnyNumber());
 516   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 517   observer_.ExpectCachedLogo(NULL);
 518   GetLogo();
 519 }
 520
 521 TEST_F(LogoTrackerTest, LogoWithTTLCannotBeShownAfterExpiration) {
 522   Logo logo = GetSampleLogo(logo_url_, test_clock_->Now());
 523   base::TimeDelta time_to_live = base::TimeDelta::FromDays(3);
 524   logo.metadata.expiration_time = test_clock_->Now() + time_to_live;
 525   SetServerResponse(ServerResponse(logo));
 526   GetLogo();
 527
 528   const LogoMetadata* cached_metadata =
 529       logo_cache_->GetCachedLogoMetadata();
 530   EXPECT_TRUE(cached_metadata != NULL);
 531   EXPECT_FALSE(cached_metadata->can_show_after_expiration);
 532   EXPECT_EQ(test_clock_->Now() + time_to_live,
 533             cached_metadata->expiration_time);
 534 }
 535
 536 TEST_F(LogoTrackerTest, LogoWithoutTTLCanBeShownAfterExpiration) {
 537   Logo logo = GetSampleLogo(logo_url_, test_clock_->Now());
 538   base::TimeDelta time_to_live = base::TimeDelta();
 539   SetServerResponse(MakeServerResponse(logo, time_to_live));
 540   GetLogo();
 541
 542   const LogoMetadata* cached_metadata =
 543       logo_cache_->GetCachedLogoMetadata();
 544   EXPECT_TRUE(cached_metadata != NULL);
 545   EXPECT_TRUE(cached_metadata->can_show_after_expiration);
 546   EXPECT_EQ(test_clock_->Now() + base::TimeDelta::FromDays(30),
 547             cached_metadata->expiration_time);
 548 }
 549
 550 TEST_F(LogoTrackerTest, UseSoftExpiredCachedLogo) {
 551   SetServerResponse("", net::URLRequestStatus::FAILED, net::HTTP_OK);
 552   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 553   cached_logo.metadata.expiration_time =
 554       test_clock_->Now() - base::TimeDelta::FromSeconds(1);
 555   cached_logo.metadata.can_show_after_expiration = true;
 556   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 557
 558   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 559   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 560   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 561   observer_.ExpectCachedLogo(&cached_logo);
 562   GetLogo();
 563 }
 564
 565 TEST_F(LogoTrackerTest, RerequestSoftExpiredCachedLogo) {
 566   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 567   cached_logo.metadata.expiration_time =
 568       test_clock_->Now() - base::TimeDelta::FromDays(5);
 569   cached_logo.metadata.can_show_after_expiration = true;
 570   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 571
 572   Logo fresh_logo = GetSampleLogo2(logo_url_, test_clock_->Now());
 573   SetServerResponse(ServerResponse(fresh_logo));
 574
 575   logo_cache_->ExpectSetCachedLogo(&fresh_logo);
 576   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 577   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 578   observer_.ExpectCachedAndFreshLogos(&cached_logo, &fresh_logo);
 579
 580   GetLogo();
 581 }
 582
 583 TEST_F(LogoTrackerTest, DeleteAncientCachedLogo) {
 584   SetServerResponse("", net::URLRequestStatus::FAILED, net::HTTP_OK);
 585   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 586   cached_logo.metadata.expiration_time =
 587       test_clock_->Now() - base::TimeDelta::FromDays(200);
 588   cached_logo.metadata.can_show_after_expiration = true;
 589   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 590
 591   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 592   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 593   EXPECT_CALL(*logo_cache_, SetCachedLogo(NULL)).Times(AnyNumber());
 594   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 595   observer_.ExpectCachedLogo(NULL);
 596   GetLogo();
 597 }
 598
 599 TEST_F(LogoTrackerTest, DeleteExpiredCachedLogo) {
 600   SetServerResponse("", net::URLRequestStatus::FAILED, net::HTTP_OK);
 601   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 602   cached_logo.metadata.expiration_time =
 603       test_clock_->Now() - base::TimeDelta::FromSeconds(1);
 604   cached_logo.metadata.can_show_after_expiration = false;
 605   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 606
 607   EXPECT_CALL(*logo_cache_, UpdateCachedLogoMetadata(_)).Times(0);
 608   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(0);
 609   EXPECT_CALL(*logo_cache_, SetCachedLogo(NULL)).Times(AnyNumber());
 610   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(1));
 611   observer_.ExpectCachedLogo(NULL);
 612   GetLogo();
 613 }
 614
 615 // Tests that deal with multiple listeners.
 616
 617 void EnqueueObservers(LogoTracker* logo_tracker,
 618                       const ScopedVector<MockLogoObserver>& observers,
 619                       size_t start_index) {
 620   if (start_index >= observers.size())
 621     return;
 622
 623   logo_tracker->GetLogo(observers[start_index]);
 624   base::MessageLoop::current()->PostTask(FROM_HERE,
 625                                          base::Bind(&EnqueueObservers,
 626                                                     logo_tracker,
 627                                                     base::ConstRef(observers),
 628                                                     start_index + 1));
 629 }
 630
 631 TEST_F(LogoTrackerTest, SupportOverlappingLogoRequests) {
 632   Logo cached_logo = GetSampleLogo(logo_url_, test_clock_->Now());
 633   logo_cache_->EncodeAndSetCachedLogo(cached_logo);
 634   ON_CALL(*logo_cache_, SetCachedLogo(_)).WillByDefault(Return());
 635
 636   Logo fresh_logo = GetSampleLogo2(logo_url_, test_clock_->Now());
 637   std::string response = ServerResponse(fresh_logo);
 638   SetServerResponse(response);
 639   SetServerResponseWhenFingerprint(cached_logo.metadata.fingerprint, response);
 640
 641   const int kNumListeners = 10;
 642   ScopedVector<MockLogoObserver> listeners;
 643   for (int i = 0; i < kNumListeners; ++i) {
 644     MockLogoObserver* listener = new MockLogoObserver();
 645     listener->ExpectCachedAndFreshLogos(&cached_logo, &fresh_logo);
 646     listeners.push_back(listener);
 647   }
 648   EnqueueObservers(logo_tracker_, listeners, 0);
 649
 650   EXPECT_CALL(*logo_cache_, SetCachedLogo(_)).Times(AtMost(3));
 651   EXPECT_CALL(*logo_cache_, OnGetCachedLogo()).Times(AtMost(3));
 652
 653   base::RunLoop().RunUntilIdle();
 654 }
 655
 656 TEST_F(LogoTrackerTest, DeleteObserversWhenLogoURLChanged) {
 657   MockLogoObserver listener1;
 658   listener1.ExpectNoLogo();
 659   logo_tracker_->GetLogo(&listener1);
 660
 661   logo_url_ = GURL("http://example.com/new-logo-url");
 662   logo_tracker_->SetServerAPI(logo_url_,
 663                               base::Bind(&GoogleParseLogoResponse),
 664                               base::Bind(&GoogleAppendFingerprintToLogoURL));
 665   Logo logo = GetSampleLogo(logo_url_, test_clock_->Now());
 666   SetServerResponse(ServerResponse(logo));
 667
 668   MockLogoObserver listener2;
 669   listener2.ExpectFreshLogo(&logo);
 670   logo_tracker_->GetLogo(&listener2);
 671
 672   base::RunLoop().RunUntilIdle();
 673 }
 674
 675 }  // namespace
 676
 677 }  // namespace search_provider_logos