1 // Copyright (c) 2011 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/common/thumbnail_score.h" 6 #include "testing/gtest/include/gtest/gtest.h" 7 8 // Tests that the different types of thumbnails are compared properly. 9 TEST(ThumbnailScoreTest, ShouldReplaceThumbnailWithType) { 10 base::Time now = base::Time::Now(); 11 12 ThumbnailScore nothing_good(0.5, false, false, now); 13 ThumbnailScore not_at_top(0.5, false, true, now); 14 ThumbnailScore bad_clipping(0.5, true, false, now); 15 ThumbnailScore life_is_awesome(0.5, true, true, now); 16 17 EXPECT_TRUE(ShouldReplaceThumbnailWith(nothing_good, not_at_top)); 18 EXPECT_TRUE(ShouldReplaceThumbnailWith(nothing_good, bad_clipping)); 19 EXPECT_TRUE(ShouldReplaceThumbnailWith(nothing_good, life_is_awesome)); 20 EXPECT_TRUE(ShouldReplaceThumbnailWith(not_at_top, bad_clipping)); 21 EXPECT_TRUE(ShouldReplaceThumbnailWith(not_at_top, life_is_awesome)); 22 EXPECT_TRUE(ShouldReplaceThumbnailWith(bad_clipping, life_is_awesome)); 23 } 24 25 // Tests that we'll replace old thumbnails will crappier but newer ones. 26 TEST(ThumbnailScoreTest, ShouldReplaceThumbnailWithTime) { 27 // Use a really long time for the difference so we aren't sensitive to the 28 // degrading schedule. 29 base::Time now = base::Time::Now(); 30 base::Time last_year = now - base::TimeDelta::FromDays(365); 31 32 ThumbnailScore oldie_but_goodie(0.1, true, true, last_year); 33 ThumbnailScore newie_but_crappie(0.9, true, true, now); 34 35 EXPECT_TRUE(ShouldReplaceThumbnailWith(oldie_but_goodie, newie_but_crappie)); 36 } 37 38 // Having many redirects should age the thumbnail. 39 TEST(ThumbnailScoreTest, RedirectCount) { 40 base::Time now = base::Time::Now(); 41 42 ThumbnailScore no_redirects(0.5, true, true, now); 43 no_redirects.redirect_hops_from_dest = 0; 44 ThumbnailScore some_redirects(0.5, true, true, now); 45 some_redirects.redirect_hops_from_dest = 1; 46 47 EXPECT_TRUE(ShouldReplaceThumbnailWith(some_redirects, no_redirects)); 48 49 // This one has a lot of redirects but a better score. It should still be 50 // rejected. 51 ThumbnailScore lotsa_redirects(0.4, true, true, now); 52 lotsa_redirects.redirect_hops_from_dest = 4; 53 EXPECT_FALSE(ShouldReplaceThumbnailWith(no_redirects, lotsa_redirects)); 54 } 55 56 TEST(ThumbnailScoreTest, ShouldConsiderUpdating) { 57 ThumbnailScore score; 58 // By default, the score is low, thus we should generate a new thumbnail. 59 EXPECT_TRUE(score.ShouldConsiderUpdating()); 60 61 // Make it very interesting, but this is not enough. 62 score.boring_score = 0.0; 63 EXPECT_TRUE(score.ShouldConsiderUpdating()); 64 65 // good_clipping is important, but sill not enough. 66 score.good_clipping = true; 67 EXPECT_TRUE(score.ShouldConsiderUpdating()); 68 69 // at_top is important, but still not enough. 70 score.at_top = true; 71 EXPECT_TRUE(score.ShouldConsiderUpdating()); 72 73 // load_completed is important. Finally, the thumbnail is new and 74 // interesting enough. 75 score.load_completed = true; 76 EXPECT_FALSE(score.ShouldConsiderUpdating()); 77 78 // Make it very boring, but it won't change the result. The boring score 79 // isn't used for judging whether we should update or not. See comments 80 // at boring_score in thumbnail_score.h for why. 81 score.boring_score = 1.0; 82 EXPECT_FALSE(score.ShouldConsiderUpdating()); 83 84 // Make it old. Then, it's no longer new enough. 85 score.time_at_snapshot -= 86 base::TimeDelta::FromDays(ThumbnailScore::kUpdateThumbnailTimeDays); 87 EXPECT_TRUE(score.ShouldConsiderUpdating()); 88 } 89
