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 #include "testing/gtest/include/gtest/gtest.h"
7
8 namespace {
9
ReferenceGetBits32(const uint8_t * pData,int bitpos,int nbits)10 uint32_t ReferenceGetBits32(const uint8_t* pData, int bitpos, int nbits) {
11 int result = 0;
12 for (int i = 0; i < nbits; i++) {
13 if (pData[(bitpos + i) / 8] & (1 << (7 - (bitpos + i) % 8)))
14 result |= 1 << (nbits - i - 1);
15 }
16 return result;
17 }
18
19 } // namespace
20
TEST(fxcrt,FXSYS_HexCharToInt)21 TEST(fxcrt, FXSYS_HexCharToInt) {
22 EXPECT_EQ(10, FXSYS_HexCharToInt('a'));
23 EXPECT_EQ(10, FXSYS_HexCharToInt('A'));
24 EXPECT_EQ(7, FXSYS_HexCharToInt('7'));
25 EXPECT_EQ(0, FXSYS_HexCharToInt('i'));
26 }
27
TEST(fxcrt,FXSYS_DecimalCharToInt)28 TEST(fxcrt, FXSYS_DecimalCharToInt) {
29 EXPECT_EQ(7, FXSYS_DecimalCharToInt('7'));
30 EXPECT_EQ(0, FXSYS_DecimalCharToInt('a'));
31 EXPECT_EQ(7, FXSYS_DecimalCharToInt(L'7'));
32 EXPECT_EQ(0, FXSYS_DecimalCharToInt(L'a'));
33 }
34
TEST(fxcrt,FXSYS_isDecimalDigit)35 TEST(fxcrt, FXSYS_isDecimalDigit) {
36 EXPECT_TRUE(FXSYS_isDecimalDigit('7'));
37 EXPECT_TRUE(FXSYS_isDecimalDigit(L'7'));
38 EXPECT_FALSE(FXSYS_isDecimalDigit('a'));
39 EXPECT_FALSE(FXSYS_isDecimalDigit(L'a'));
40 }
41
TEST(fxcrt,FX_HashCode_Ascii)42 TEST(fxcrt, FX_HashCode_Ascii) {
43 EXPECT_EQ(0u, FX_HashCode_GetA("", false));
44 EXPECT_EQ(65u, FX_HashCode_GetA("A", false));
45 EXPECT_EQ(97u, FX_HashCode_GetA("A", true));
46 EXPECT_EQ(31 * 65u + 66u, FX_HashCode_GetA("AB", false));
47 }
48
TEST(fxcrt,FX_HashCode_Wide)49 TEST(fxcrt, FX_HashCode_Wide) {
50 EXPECT_EQ(0u, FX_HashCode_GetW(L"", false));
51 EXPECT_EQ(65u, FX_HashCode_GetW(L"A", false));
52 EXPECT_EQ(97u, FX_HashCode_GetW(L"A", true));
53 EXPECT_EQ(1313 * 65u + 66u, FX_HashCode_GetW(L"AB", false));
54 }
55
TEST(fxcrt,FXSYS_IntToTwoHexChars)56 TEST(fxcrt, FXSYS_IntToTwoHexChars) {
57 char buf[3] = {0};
58 FXSYS_IntToTwoHexChars(0x0, buf);
59 EXPECT_STREQ("00", buf);
60 FXSYS_IntToTwoHexChars(0x9, buf);
61 EXPECT_STREQ("09", buf);
62 FXSYS_IntToTwoHexChars(0xA, buf);
63 EXPECT_STREQ("0A", buf);
64 FXSYS_IntToTwoHexChars(0x8C, buf);
65 EXPECT_STREQ("8C", buf);
66 FXSYS_IntToTwoHexChars(0xBE, buf);
67 EXPECT_STREQ("BE", buf);
68 FXSYS_IntToTwoHexChars(0xD0, buf);
69 EXPECT_STREQ("D0", buf);
70 FXSYS_IntToTwoHexChars(0xFF, buf);
71 EXPECT_STREQ("FF", buf);
72 }
73
TEST(fxcrt,FXSYS_IntToFourHexChars)74 TEST(fxcrt, FXSYS_IntToFourHexChars) {
75 char buf[5] = {0};
76 FXSYS_IntToFourHexChars(0x0, buf);
77 EXPECT_STREQ("0000", buf);
78 FXSYS_IntToFourHexChars(0xA23, buf);
79 EXPECT_STREQ("0A23", buf);
80 FXSYS_IntToFourHexChars(0xB701, buf);
81 EXPECT_STREQ("B701", buf);
82 FXSYS_IntToFourHexChars(0xFFFF, buf);
83 EXPECT_STREQ("FFFF", buf);
84 }
85
TEST(fxcrt,FXSYS_ToUTF16BE)86 TEST(fxcrt, FXSYS_ToUTF16BE) {
87 char buf[9] = {0};
88 // Test U+0000 to U+D7FF and U+E000 to U+FFFF
89 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0x0, buf));
90 EXPECT_STREQ("0000", buf);
91 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xD7FF, buf));
92 EXPECT_STREQ("D7FF", buf);
93 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xE000, buf));
94 EXPECT_STREQ("E000", buf);
95 EXPECT_EQ(4U, FXSYS_ToUTF16BE(0xFFFF, buf));
96 EXPECT_STREQ("FFFF", buf);
97 // Test U+10000 to U+10FFFF
98 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x10000, buf));
99 EXPECT_STREQ("D800DC00", buf);
100 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x10FFFF, buf));
101 EXPECT_STREQ("DBFFDFFF", buf);
102 EXPECT_EQ(8U, FXSYS_ToUTF16BE(0x2003E, buf));
103 EXPECT_STREQ("D840DC3E", buf);
104 }
105
TEST(fxcrt,GetBits32)106 TEST(fxcrt, GetBits32) {
107 unsigned char data[] = {0xDE, 0x3F, 0xB1, 0x7C, 0x12, 0x9A, 0x04, 0x56};
108 for (int nbits = 1; nbits <= 32; ++nbits) {
109 for (int bitpos = 0; bitpos < (int)sizeof(data) * 8 - nbits; ++bitpos) {
110 EXPECT_EQ(ReferenceGetBits32(data, bitpos, nbits),
111 GetBits32(data, bitpos, nbits));
112 }
113 }
114 }
115