1 // Copyright 2015 PDFium 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 "core/include/fxcrt/fx_bidi.h"
6 #include "testing/gtest/include/gtest/gtest.h"
7
8 namespace {
9
10 const FX_WCHAR kNeutralChar = 32;
11 const FX_WCHAR kLeftChar = 65;
12 const FX_WCHAR kRightChar = 1424;
13
14 } // namespace
15
TEST(fxcrt,BidiCharEmpty)16 TEST(fxcrt, BidiCharEmpty) {
17 int32_t start = -1;
18 int32_t count = -1;
19 CFX_BidiChar bidi;
20 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(nullptr, nullptr);
21 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
22
23 dir = bidi.GetBidiInfo(&start, nullptr);
24 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
25 EXPECT_EQ(0, start);
26
27 dir = bidi.GetBidiInfo(nullptr, &count);
28 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
29 EXPECT_EQ(0, count);
30
31 start = -1;
32 count = -1;
33 dir = bidi.GetBidiInfo(&start, &count);
34 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
35 EXPECT_EQ(0, start);
36 EXPECT_EQ(0, count);
37
38 EXPECT_FALSE(bidi.EndChar());
39 }
40
TEST(fxcrt,BidiCharLeft)41 TEST(fxcrt, BidiCharLeft) {
42 int32_t start = -1;
43 int32_t count = -1;
44 CFX_BidiChar bidi;
45
46 EXPECT_TRUE(bidi.AppendChar(kLeftChar));
47 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
48 EXPECT_EQ(0, start);
49 EXPECT_EQ(0, count);
50
51 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
52 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
53
54 dir = bidi.GetBidiInfo(&start, &count);
55 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
56 EXPECT_EQ(0, start);
57 EXPECT_EQ(0, count);
58
59 EXPECT_TRUE(bidi.EndChar());
60 dir = bidi.GetBidiInfo(&start, &count);
61 EXPECT_EQ(CFX_BidiChar::LEFT, dir);
62 EXPECT_EQ(0, start);
63 EXPECT_EQ(3, count);
64
65 EXPECT_FALSE(bidi.EndChar());
66 }
67
TEST(fxcrt,BidiCharLeftNeutralRight)68 TEST(fxcrt, BidiCharLeftNeutralRight) {
69 int32_t start = -1;
70 int32_t count = -1;
71 CFX_BidiChar bidi;
72
73 EXPECT_TRUE(bidi.AppendChar(kLeftChar));
74 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
75 EXPECT_EQ(0, start);
76 EXPECT_EQ(0, count);
77
78 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
79 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
80 EXPECT_TRUE(bidi.AppendChar(kNeutralChar));
81 dir = bidi.GetBidiInfo(&start, &count);
82 EXPECT_EQ(0, start);
83 EXPECT_EQ(3, count);
84
85 EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
86 EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
87 EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
88 EXPECT_TRUE(bidi.AppendChar(kRightChar));
89 dir = bidi.GetBidiInfo(&start, &count);
90 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
91 EXPECT_EQ(3, start);
92 EXPECT_EQ(4, count);
93
94 EXPECT_TRUE(bidi.EndChar());
95 dir = bidi.GetBidiInfo(&start, &count);
96 EXPECT_EQ(CFX_BidiChar::RIGHT, dir);
97 EXPECT_EQ(7, start);
98 EXPECT_EQ(1, count);
99
100 EXPECT_FALSE(bidi.EndChar());
101 }
102
TEST(fxcrt,BidiCharLeftRightLeft)103 TEST(fxcrt, BidiCharLeftRightLeft) {
104 int32_t start = -1;
105 int32_t count = -1;
106 CFX_BidiChar bidi;
107
108 EXPECT_TRUE(bidi.AppendChar(kLeftChar));
109 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
110 EXPECT_EQ(0, start);
111 EXPECT_EQ(0, count);
112
113 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
114 EXPECT_FALSE(bidi.AppendChar(kLeftChar));
115 EXPECT_TRUE(bidi.AppendChar(kRightChar));
116 dir = bidi.GetBidiInfo(&start, &count);
117 EXPECT_EQ(0, start);
118 EXPECT_EQ(3, count);
119
120 EXPECT_FALSE(bidi.AppendChar(kRightChar));
121 EXPECT_FALSE(bidi.AppendChar(kRightChar));
122 EXPECT_FALSE(bidi.AppendChar(kRightChar));
123 EXPECT_TRUE(bidi.AppendChar(kLeftChar));
124 dir = bidi.GetBidiInfo(&start, &count);
125 EXPECT_EQ(CFX_BidiChar::RIGHT, dir);
126 EXPECT_EQ(3, start);
127 EXPECT_EQ(4, count);
128
129 EXPECT_TRUE(bidi.EndChar());
130 dir = bidi.GetBidiInfo(&start, &count);
131 EXPECT_EQ(CFX_BidiChar::LEFT, dir);
132 EXPECT_EQ(7, start);
133 EXPECT_EQ(1, count);
134
135 EXPECT_FALSE(bidi.EndChar());
136 }
137