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Side by Side Diff: ui/gfx/break_list_unittest.cc

Issue 11535014: Replace StyleRange with BreakList; update RenderText, etc. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Add GetNextBreak and AdvanceIterators convenience methods; cleanup. Created 7 years, 10 months ago
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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 "ui/gfx/break_list.h"
6
7 #include "testing/gtest/include/gtest/gtest.h"
8 #include "third_party/skia/include/core/SkColor.h"
9 #include "ui/base/range/range.h"
10
11 namespace gfx {
12
13 class BreakListTest : public testing::Test {};
14
15 TEST_F(BreakListTest, SetValue) {
16 // Check the default values applied to new instances and adjusted text.
17 BreakList<bool> style_breaks(false);
18 EXPECT_TRUE(style_breaks.EqualsValueForTest(false));
19 style_breaks.SetValue(true);
20 EXPECT_TRUE(style_breaks.EqualsValueForTest(true));
21
22 BreakList<SkColor> color_breaks(SK_ColorRED);
23 EXPECT_TRUE(color_breaks.EqualsValueForTest(SK_ColorRED));
24 color_breaks.SetValue(SK_ColorBLACK);
25 EXPECT_TRUE(color_breaks.EqualsValueForTest(SK_ColorBLACK));
26 }
27
28 TEST_F(BreakListTest, ApplyValue) {
29 BreakList<bool> breaks(false);
30
31 // Ensure ApplyValue is a no-op on invalid and empty ranges.
32 breaks.ApplyValue(true, ui::Range::InvalidRange());
33 EXPECT_TRUE(breaks.EqualsValueForTest(false));
34 for (size_t i = 0; i < 3; ++i) {
35 breaks.ApplyValue(true, ui::Range(i, i));
36 EXPECT_TRUE(breaks.EqualsValueForTest(false));
37 }
38
39 // Apply a value to a valid range, check breaks; repeating should be no-op.
40 std::vector<std::pair<size_t, bool> > expected;
41 expected.push_back(std::pair<size_t, bool>(0, false));
42 expected.push_back(std::pair<size_t, bool>(2, true));
43 expected.push_back(std::pair<size_t, bool>(3, false));
44 for (size_t i = 0; i < 2; ++i) {
45 breaks.ApplyValue(true, ui::Range(2, 3));
46 EXPECT_TRUE(breaks.EqualsListForTest(expected));
47 }
48
49 // Ensure setting a value overrides the ranged value.
50 breaks.SetValue(true);
51 EXPECT_TRUE(breaks.EqualsValueForTest(true));
52
53 // Ensure applying a value over [0, INT_MAX) is the same as setting a value.
54 breaks.ApplyValue(false, ui::Range(0, INT_MAX));
55 EXPECT_TRUE(breaks.EqualsValueForTest(false));
56
57 // Ensure applying a value that is already applied has no effect.
58 breaks.ApplyValue(false, ui::Range(0, 2));
59 breaks.ApplyValue(false, ui::Range(3, 6));
60 breaks.ApplyValue(false, ui::Range(7, INT_MAX));
61 EXPECT_TRUE(breaks.EqualsValueForTest(false));
62
63 // Ensure applying an identical neighboring value merges the ranges.
64 breaks.ApplyValue(true, ui::Range(0, 3));
65 breaks.ApplyValue(true, ui::Range(3, 6));
66 breaks.ApplyValue(true, ui::Range(6, INT_MAX));
67 EXPECT_TRUE(breaks.EqualsValueForTest(true));
68
69 // Ensure applying a value with the same range overrides the ranged value.
70 breaks.ApplyValue(false, ui::Range(2, 3));
71 breaks.ApplyValue(true, ui::Range(2, 3));
72 EXPECT_TRUE(breaks.EqualsValueForTest(true));
73
74 // Ensure applying a value with a containing range overrides contained values.
75 breaks.ApplyValue(false, ui::Range(0, 1));
76 breaks.ApplyValue(false, ui::Range(2, 3));
77 breaks.ApplyValue(true, ui::Range(0, 3));
78 EXPECT_TRUE(breaks.EqualsValueForTest(true));
79 breaks.ApplyValue(false, ui::Range(4, 5));
80 breaks.ApplyValue(false, ui::Range(6, 7));
81 breaks.ApplyValue(false, ui::Range(8, 9));
82 breaks.ApplyValue(true, ui::Range(4, 9));
83 EXPECT_TRUE(breaks.EqualsValueForTest(true));
84
85 // Ensure applying various overlapping values yields the intended results.
86 breaks.ApplyValue(false, ui::Range(1, 4));
87 breaks.ApplyValue(false, ui::Range(5, 8));
88 breaks.ApplyValue(true, ui::Range(0, 2));
89 breaks.ApplyValue(true, ui::Range(3, 6));
90 breaks.ApplyValue(true, ui::Range(7, INT_MAX));
91 std::vector<std::pair<size_t, bool> > overlap;
92 overlap.push_back(std::pair<size_t, bool>(0, true));
93 overlap.push_back(std::pair<size_t, bool>(2, false));
94 overlap.push_back(std::pair<size_t, bool>(3, true));
95 overlap.push_back(std::pair<size_t, bool>(6, false));
96 overlap.push_back(std::pair<size_t, bool>(7, true));
97 EXPECT_TRUE(breaks.EqualsListForTest(overlap));
98 }
99
100 TEST_F(BreakListTest, TrimBreaks) {
101 // Ensure values adjust to accommodate length changes.
102 BreakList<bool> breaks(false);
103 breaks.ApplyValue(true, ui::Range(0, 2));
104 breaks.ApplyValue(true, ui::Range(3, 6));
105 breaks.ApplyValue(true, ui::Range(7, INT_MAX));
106
107 std::vector<std::pair<size_t, bool> > expected;
108 expected.push_back(std::pair<size_t, bool>(0, true));
109 expected.push_back(std::pair<size_t, bool>(2, false));
110 expected.push_back(std::pair<size_t, bool>(3, true));
111 expected.push_back(std::pair<size_t, bool>(6, false));
112 expected.push_back(std::pair<size_t, bool>(7, true));
113 EXPECT_TRUE(breaks.EqualsListForTest(expected));
114
115 // Trimming to a smaller length should remove the corresponding breaks.
116 breaks.TrimBreaks(7);
117 expected.resize(4);
118 EXPECT_TRUE(breaks.EqualsListForTest(expected));
119 breaks.TrimBreaks(4);
120 expected.resize(3);
121 EXPECT_TRUE(breaks.EqualsListForTest(expected));
122
123 // Trimming to a longer length should not change any breaks.
124 breaks.TrimBreaks(99);
125 EXPECT_TRUE(breaks.EqualsListForTest(expected));
126 }
127
128 TEST_F(BreakListTest, SaveAndRestore) {
129 // Ensure values applied between SaveList and RestoreList are temporary.
130 BreakList<bool> breaks(false);
131 breaks.ApplyValue(true, ui::Range(0, 1));
132 std::vector<std::pair<size_t, bool> > expected_saved;
133 expected_saved.push_back(std::pair<size_t, bool>(0, true));
134 expected_saved.push_back(std::pair<size_t, bool>(1, false));
135 EXPECT_TRUE(breaks.EqualsListForTest(expected_saved));
136
137 breaks.SaveList();
138 breaks.ApplyValue(true, ui::Range(1, 2));
139 std::vector<std::pair<size_t, bool> > expected_temporary;
140 expected_temporary.push_back(std::pair<size_t, bool>(0, true));
141 expected_temporary.push_back(std::pair<size_t, bool>(2, false));
142 EXPECT_TRUE(breaks.EqualsListForTest(expected_temporary));
143
144 breaks.RestoreList();
145 EXPECT_TRUE(breaks.EqualsListForTest(expected_saved));
146 }
147
148 } // namespace gfx
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