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 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 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 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 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 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 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 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 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 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 } 105 106 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
