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