1 // Copyright (c) 2009 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.
TEST(ThumbnailScoreTest,ShouldReplaceThumbnailWithType)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.
TEST(ThumbnailScoreTest,ShouldReplaceThumbnailWithTime)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.
TEST(ThumbnailScoreTest,RedirectCount)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
TEST(ThumbnailScoreTest,ShouldConsiderUpdating)56 TEST(ThumbnailScoreTest, ShouldConsiderUpdating) {
57 ThumbnailScore score;
58 // By default, the score is 1.0, meaning very boring, thus we should
59 // generate a new thumbnail.
60 EXPECT_DOUBLE_EQ(1.0, score.boring_score);
61 EXPECT_TRUE(score.ShouldConsiderUpdating());
62
63 // Make it very interesting, but this is not enough.
64 score.boring_score = 0.0;
65 EXPECT_TRUE(score.ShouldConsiderUpdating());
66
67 // good_clipping is important, but sill not enough.
68 score.good_clipping = true;
69 EXPECT_TRUE(score.ShouldConsiderUpdating());
70
71 // at_top is important. Finally, the thumbnail is new and interesting enough.
72 score.at_top = true;
73 EXPECT_FALSE(score.ShouldConsiderUpdating());
74
75 // Make it old. Then, it's no longer new enough.
76 score.time_at_snapshot -= ThumbnailScore::kUpdateThumbnailTime;
77 EXPECT_TRUE(score.ShouldConsiderUpdating());
78 }
79