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/fxcrt/fx_extension.h"
6
7 #include <limits>
8
9 #include "testing/gtest/include/gtest/gtest.h"
10
TEST(fxcrt,FXSYS_HexCharToInt)11 TEST(fxcrt, FXSYS_HexCharToInt) {
12 EXPECT_EQ(10, FXSYS_HexCharToInt('a'));
13 EXPECT_EQ(10, FXSYS_HexCharToInt('A'));
14 EXPECT_EQ(7, FXSYS_HexCharToInt('7'));
15 EXPECT_EQ(0, FXSYS_HexCharToInt('i'));
16 }
17
TEST(fxcrt,FXSYS_DecimalCharToInt)18 TEST(fxcrt, FXSYS_DecimalCharToInt) {
19 EXPECT_EQ(7, FXSYS_DecimalCharToInt('7'));
20 EXPECT_EQ(0, FXSYS_DecimalCharToInt('a'));
21 EXPECT_EQ(7, FXSYS_DecimalCharToInt(L'7'));
22 EXPECT_EQ(0, FXSYS_DecimalCharToInt(L'a'));
23 EXPECT_EQ(0, FXSYS_DecimalCharToInt(static_cast<char>(-78)));
24 EXPECT_EQ(0, FXSYS_DecimalCharToInt(static_cast<wchar_t>(0xb2)));
25 }
26
TEST(fxcrt,FXSYS_IsDecimalDigit)27 TEST(fxcrt, FXSYS_IsDecimalDigit) {
28 EXPECT_TRUE(FXSYS_IsDecimalDigit('7'));
29 EXPECT_TRUE(FXSYS_IsDecimalDigit(L'7'));
30 EXPECT_FALSE(FXSYS_IsDecimalDigit('a'));
31 EXPECT_FALSE(FXSYS_IsDecimalDigit(L'a'));
32 EXPECT_FALSE(FXSYS_IsDecimalDigit(static_cast<char>(-78)));
33 EXPECT_FALSE(FXSYS_IsDecimalDigit(static_cast<wchar_t>(0xb2)));
34 }
35
TEST(fxcrt,FXSYS_IntToTwoHexChars)36 TEST(fxcrt, FXSYS_IntToTwoHexChars) {
37 char buf[3] = {0};
38 FXSYS_IntToTwoHexChars(0x0, buf);
39 EXPECT_STREQ("00", buf);
40 FXSYS_IntToTwoHexChars(0x9, buf);
41 EXPECT_STREQ("09", buf);
42 FXSYS_IntToTwoHexChars(0xA, buf);
43 EXPECT_STREQ("0A", buf);
44 FXSYS_IntToTwoHexChars(0x8C, buf);
45 EXPECT_STREQ("8C", buf);
46 FXSYS_IntToTwoHexChars(0xBE, buf);
47 EXPECT_STREQ("BE", buf);
48 FXSYS_IntToTwoHexChars(0xD0, buf);
49 EXPECT_STREQ("D0", buf);
50 FXSYS_IntToTwoHexChars(0xFF, buf);
51 EXPECT_STREQ("FF", buf);
52 }
53
TEST(fxcrt,FXSYS_IntToFourHexChars)54 TEST(fxcrt, FXSYS_IntToFourHexChars) {
55 char buf[5] = {0};
56 FXSYS_IntToFourHexChars(0x0, buf);
57 EXPECT_STREQ("0000", buf);
58 FXSYS_IntToFourHexChars(0xA23, buf);
59 EXPECT_STREQ("0A23", buf);
60 FXSYS_IntToFourHexChars(0xB701, buf);
61 EXPECT_STREQ("B701", buf);
62 FXSYS_IntToFourHexChars(0xFFFF, buf);
63 EXPECT_STREQ("FFFF", buf);
64 }
65
TEST(fxcrt,FXSYS_ToUTF16BE)66 TEST(fxcrt, FXSYS_ToUTF16BE) {
67 char buf[9] = {0};
68 // Test U+0000 to U+D7FF and U+E000 to U+FFFF
69 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0x0, buf));
70 EXPECT_STREQ("0000", buf);
71 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xD7FF, buf));
72 EXPECT_STREQ("D7FF", buf);
73 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xE000, buf));
74 EXPECT_STREQ("E000", buf);
75 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xFFFF, buf));
76 EXPECT_STREQ("FFFF", buf);
77 // Test U+10000 to U+10FFFF
78 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x10000, buf));
79 EXPECT_STREQ("D800DC00", buf);
80 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x10FFFF, buf));
81 EXPECT_STREQ("DBFFDFFF", buf);
82 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x2003E, buf));
83 EXPECT_STREQ("D840DC3E", buf);
84 }
85
TEST(fxcrt,FXSYS_wcstof)86 TEST(fxcrt, FXSYS_wcstof) {
87 int32_t used_len = 0;
88 EXPECT_FLOAT_EQ(-12.0f, FXSYS_wcstof(L"-12", 3, &used_len));
89 EXPECT_EQ(3, used_len);
90
91 used_len = 0;
92 EXPECT_FLOAT_EQ(1.5362f, FXSYS_wcstof(L"1.5362", 6, &used_len));
93 EXPECT_EQ(6, used_len);
94
95 used_len = 0;
96 EXPECT_FLOAT_EQ(0.875f, FXSYS_wcstof(L"0.875", 5, &used_len));
97 EXPECT_EQ(5, used_len);
98
99 used_len = 0;
100 EXPECT_FLOAT_EQ(5.56e-2f, FXSYS_wcstof(L"5.56e-2", 7, &used_len));
101 EXPECT_EQ(7, used_len);
102
103 used_len = 0;
104 EXPECT_FLOAT_EQ(1.234e10f, FXSYS_wcstof(L"1.234E10", 8, &used_len));
105 EXPECT_EQ(8, used_len);
106
107 used_len = 0;
108 EXPECT_FLOAT_EQ(0.0f, FXSYS_wcstof(L"1.234E100000000000000", 21, &used_len));
109 EXPECT_EQ(0, used_len);
110
111 used_len = 0;
112 EXPECT_FLOAT_EQ(0.0f, FXSYS_wcstof(L"1.234E-128", 21, &used_len));
113 EXPECT_EQ(0, used_len);
114
115 // TODO(dsinclair): This should round as per IEEE 64-bit values.
116 // EXPECT_EQ(L"123456789.01234567", FXSYS_wcstof(L"123456789.012345678"));
117 used_len = 0;
118 EXPECT_FLOAT_EQ(123456789.012345678f,
119 FXSYS_wcstof(L"123456789.012345678", 19, &used_len));
120 EXPECT_EQ(19, used_len);
121
122 // TODO(dsinclair): This is spec'd as rounding when > 16 significant digits
123 // prior to the exponent.
124 // EXPECT_EQ(100000000000000000, FXSYS_wcstof(L"99999999999999999"));
125 used_len = 0;
126 EXPECT_FLOAT_EQ(99999999999999999.0f,
127 FXSYS_wcstof(L"99999999999999999", 17, &used_len));
128 EXPECT_EQ(17, used_len);
129
130 // For https://crbug.com/pdfium/1217
131 EXPECT_FLOAT_EQ(0.0f, FXSYS_wcstof(L"e76", 3, nullptr));
132
133 // Overflow to infinity.
134 used_len = 0;
135 EXPECT_TRUE(std::isinf(FXSYS_wcstof(
136 L"88888888888888888888888888888888888888888888888888888888888888888888888"
137 L"88888888888888888888888888888888888888888888888888888888888",
138 130, &used_len)));
139 EXPECT_EQ(130, used_len);
140
141 used_len = 0;
142 EXPECT_TRUE(std::isinf(FXSYS_wcstof(
143 L"-8888888888888888888888888888888888888888888888888888888888888888888888"
144 L"888888888888888888888888888888888888888888888888888888888888",
145 131, &used_len)));
146 EXPECT_EQ(131, used_len);
147 }
148
TEST(fxcrt,FXSYS_SafeOps)149 TEST(fxcrt, FXSYS_SafeOps) {
150 const float fMin = std::numeric_limits<float>::min();
151 const float fMax = std::numeric_limits<float>::max();
152 const float fInf = std::numeric_limits<float>::infinity();
153 const float fNan = std::numeric_limits<float>::quiet_NaN();
154 const float ascending[] = {fMin, 1.0f, 2.0f, fMax, fInf, fNan};
155
156 for (size_t i = 0; i < FX_ArraySize(ascending); ++i) {
157 for (size_t j = 0; j < FX_ArraySize(ascending); ++j) {
158 if (i == j) {
159 EXPECT_TRUE(FXSYS_SafeEQ(ascending[i], ascending[j]))
160 << " at " << i << " " << j;
161 } else {
162 EXPECT_FALSE(FXSYS_SafeEQ(ascending[i], ascending[j]))
163 << " at " << i << " " << j;
164 }
165 if (i < j) {
166 EXPECT_TRUE(FXSYS_SafeLT(ascending[i], ascending[j]))
167 << " at " << i << " " << j;
168 } else {
169 EXPECT_FALSE(FXSYS_SafeLT(ascending[i], ascending[j]))
170 << " at " << i << " " << j;
171 }
172 }
173 }
174 }
175