src/chrome/browser/thumbnails/thumbnail_service_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 "chrome/browser/thumbnails/thumbnail_service_impl.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "chrome/browser/history/top_sites_impl.h"
   9 #include "chrome/test/base/testing_profile.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 typedef testing::Test ThumbnailServiceTest;
  13
  14 // A mock version of TopSitesImpl, used for testing
  15 // ShouldAcquirePageThumbnail().
  16 class MockTopSites : public history::TopSitesImpl {
  17  public:
  18   explicit MockTopSites(Profile* profile)
  19       : history::TopSitesImpl(profile),
  20         capacity_(1) {
  21   }
  22
  23   // history::TopSitesImpl overrides.
  24   virtual bool IsFull() OVERRIDE {
  25     return known_url_map_.size() >= capacity_;
  26   }
  27   virtual bool IsKnownURL(const GURL& url) OVERRIDE {
  28     return known_url_map_.find(url.spec()) != known_url_map_.end();
  29   }
  30   virtual bool GetPageThumbnailScore(const GURL& url,
  31                                      ThumbnailScore* score) OVERRIDE {
  32     std::map<std::string, ThumbnailScore>::const_iterator iter =
  33         known_url_map_.find(url.spec());
  34     if (iter == known_url_map_.end()) {
  35       return false;
  36     } else {
  37       *score = iter->second;
  38       return true;
  39     }
  40   }
  41
  42   // Adds a known URL with the associated thumbnail score.
  43   void AddKnownURL(const GURL& url, const ThumbnailScore& score) {
  44     known_url_map_[url.spec()] = score;
  45   }
  46
  47  private:
  48   virtual ~MockTopSites() {}
  49
  50   const size_t capacity_;
  51   std::map<std::string, ThumbnailScore> known_url_map_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(MockTopSites);
  54 };
  55
  56 // A mock version of TestingProfile holds MockTopSites.
  57 class MockProfile : public TestingProfile {
  58  public:
  59   MockProfile() : mock_top_sites_(new MockTopSites(this)) {
  60   }
  61
  62   virtual history::TopSites* GetTopSites() OVERRIDE {
  63     return mock_top_sites_.get();
  64   }
  65
  66   void AddKnownURL(const GURL& url, const ThumbnailScore& score) {
  67     mock_top_sites_->AddKnownURL(url, score);
  68   }
  69
  70  private:
  71   scoped_refptr<MockTopSites> mock_top_sites_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(MockProfile);
  74 };
  75
  76 TEST_F(ThumbnailServiceTest, ShouldUpdateThumbnail) {
  77   const GURL kGoodURL("http://www.google.com/");
  78   const GURL kBadURL("chrome://newtab");
  79
  80   // Set up the mock profile along with mock top sites.
  81   base::ScopedTempDir temp_dir;
  82   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
  83   MockProfile profile;
  84
  85   scoped_refptr<thumbnails::ThumbnailService> thumbnail_service(
  86       new thumbnails::ThumbnailServiceImpl(&profile));
  87
  88   // Should be false because it's a bad URL.
  89   EXPECT_FALSE(thumbnail_service->ShouldAcquirePageThumbnail(kBadURL));
  90
  91   // Should be true, as it's a good URL.
  92   EXPECT_TRUE(thumbnail_service->ShouldAcquirePageThumbnail(kGoodURL));
  93
  94   // Not checking incognito mode since the service wouldn't have been created
  95   // in that case anyway.
  96
  97   // Add a known URL. This makes the top sites data full.
  98   ThumbnailScore bad_score;
  99   bad_score.time_at_snapshot = base::Time::UnixEpoch();  // Ancient time stamp.
 100   profile.AddKnownURL(kGoodURL, bad_score);
 101   ASSERT_TRUE(profile.GetTopSites()->IsFull());
 102
 103   // Should be false, as the top sites data is full, and the new URL is
 104   // not known.
 105   const GURL kAnotherGoodURL("http://www.youtube.com/");
 106   EXPECT_FALSE(thumbnail_service->ShouldAcquirePageThumbnail(kAnotherGoodURL));
 107
 108   // Should be true, as the existing thumbnail is bad (i.e. need a better one).
 109   EXPECT_TRUE(thumbnail_service->ShouldAcquirePageThumbnail(kGoodURL));
 110
 111   // Replace the thumbnail score with a really good one.
 112   ThumbnailScore good_score;
 113   good_score.time_at_snapshot = base::Time::Now();  // Very new.
 114   good_score.at_top = true;
 115   good_score.good_clipping = true;
 116   good_score.boring_score = 0.0;
 117   good_score.load_completed = true;
 118   profile.AddKnownURL(kGoodURL, good_score);
 119
 120   // Should be false, as the existing thumbnail is good enough (i.e. don't
 121   // need to replace the existing thumbnail which is new and good).
 122   EXPECT_FALSE(thumbnail_service->ShouldAcquirePageThumbnail(kGoodURL));
 123 }