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/browser/chrome_page_zoom.h"
6 #include "content/public/common/page_zoom.h"
7 #include "testing/gtest/include/gtest/gtest.h"
8
TEST(ChromePageZoomTest,PresetZoomFactors)9 TEST(ChromePageZoomTest, PresetZoomFactors) {
10 // Fetch a vector of preset zoom factors, including a custom value that we
11 // already know is not going to be in the list.
12 double custom_value = 1.05; // 105%
13 std::vector<double> factors =
14 chrome_page_zoom::PresetZoomFactors(custom_value);
15
16 // Expect at least 10 zoom factors.
17 EXPECT_GE(factors.size(), 10U);
18
19 // Expect the first and last items to match the minimum and maximum values.
20 EXPECT_DOUBLE_EQ(factors.front(), content::kMinimumZoomFactor);
21 EXPECT_DOUBLE_EQ(factors.back(), content::kMaximumZoomFactor);
22
23 // Iterate through the vector, with the following checks:
24 // 1. The values are in sorted order.
25 // 2. The custom value is exists.
26 // 3. The 100% value exists.
27 bool found_custom_value = false;
28 bool found_100_percent = false;
29 double last_value = 0;
30
31 std::vector<double>::const_iterator i;
32 for (i = factors.begin(); i != factors.end(); ++i) {
33 double factor = *i;
34 EXPECT_GT(factor, last_value);
35 if (content::ZoomValuesEqual(factor, custom_value))
36 found_custom_value = true;
37 if (content::ZoomValuesEqual(factor, 1.0))
38 found_100_percent = true;
39 last_value = factor;
40 }
41
42 EXPECT_TRUE(found_custom_value);
43 EXPECT_TRUE(found_100_percent);
44 }
45
TEST(ChromePageZoomTest,PresetZoomLevels)46 TEST(ChromePageZoomTest, PresetZoomLevels) {
47 // Fetch a vector of preset zoom levels, including a custom value that we
48 // already know is not going to be in the list.
49 double custom_value = 0.1;
50 std::vector<double> levels = chrome_page_zoom::PresetZoomLevels(custom_value);
51
52 // Expect at least 10 zoom levels.
53 EXPECT_GE(levels.size(), 10U);
54
55 // Iterate through the vector, with the following checks:
56 // 1. The values are in sorted order.
57 // 2. The custom value is exists.
58 // 3. The 100% value exists.
59 bool found_custom_value = false;
60 bool found_100_percent = false;
61 double last_value = -99;
62
63 std::vector<double>::const_iterator i;
64 for (i = levels.begin(); i != levels.end(); ++i) {
65 double level = *i;
66 EXPECT_GT(level, last_value);
67 if (content::ZoomValuesEqual(level, custom_value))
68 found_custom_value = true;
69 if (content::ZoomValuesEqual(level, 0))
70 found_100_percent = true;
71 last_value = level;
72 }
73
74 EXPECT_TRUE(found_custom_value);
75 EXPECT_TRUE(found_100_percent);
76 }
77
TEST(ChromePageZoomTest,InvalidCustomFactor)78 TEST(ChromePageZoomTest, InvalidCustomFactor) {
79 double too_low = 0.01;
80 std::vector<double> factors = chrome_page_zoom::PresetZoomFactors(too_low);
81 EXPECT_FALSE(content::ZoomValuesEqual(factors.front(), too_low));
82
83 double too_high = 99.0;
84 factors = chrome_page_zoom::PresetZoomFactors(too_high);
85 EXPECT_FALSE(content::ZoomValuesEqual(factors.back(), too_high));
86 }
87
TEST(ChromePageZoomTest,InvalidCustomLevel)88 TEST(ChromePageZoomTest, InvalidCustomLevel) {
89 double too_low = -99.0;
90 std::vector<double> levels = chrome_page_zoom::PresetZoomLevels(too_low);
91 EXPECT_FALSE(content::ZoomValuesEqual(levels.front(), too_low));
92
93 double too_high = 99.0;
94 levels = chrome_page_zoom::PresetZoomLevels(too_high);
95 EXPECT_FALSE(content::ZoomValuesEqual(levels.back(), too_high));
96 }
97
98