kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1 | // Copyright 2018 The PDFium Authors |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 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 <limits> |
| 6 | |
| 7 | #include "core/fxcrt/fx_number.h" |
| 8 | #include "testing/gtest/include/gtest/gtest.h" |
| 9 | |
| 10 | TEST(fxnumber, Default) { |
| 11 | FX_Number number; |
| 12 | EXPECT_TRUE(number.IsInteger()); |
| 13 | EXPECT_FALSE(number.IsSigned()); |
| 14 | EXPECT_EQ(0, number.GetSigned()); |
| 15 | EXPECT_FLOAT_EQ(0.0f, number.GetFloat()); |
| 16 | } |
| 17 | |
| 18 | TEST(fxnumber, FromSigned) { |
| 19 | FX_Number number(-128); |
| 20 | EXPECT_TRUE(number.IsInteger()); |
| 21 | EXPECT_TRUE(number.IsSigned()); |
| 22 | EXPECT_EQ(-128, number.GetSigned()); |
| 23 | EXPECT_FLOAT_EQ(-128.0f, number.GetFloat()); |
| 24 | |
| 25 | // Show that assignment works. |
| 26 | FX_Number number2 = number; |
| 27 | EXPECT_TRUE(number2.IsInteger()); |
| 28 | EXPECT_TRUE(number2.IsSigned()); |
| 29 | EXPECT_EQ(-128, number2.GetSigned()); |
| 30 | EXPECT_FLOAT_EQ(-128.0f, number2.GetFloat()); |
| 31 | } |
| 32 | |
| 33 | TEST(fxnumber, FromFloat) { |
| 34 | FX_Number number(-100.001f); |
| 35 | EXPECT_FALSE(number.IsInteger()); |
| 36 | EXPECT_TRUE(number.IsSigned()); |
| 37 | EXPECT_EQ(-100, number.GetSigned()); |
| 38 | EXPECT_FLOAT_EQ(-100.001f, number.GetFloat()); |
| 39 | |
| 40 | // Show that assignment works. |
| 41 | FX_Number number2 = number; |
| 42 | EXPECT_FALSE(number2.IsInteger()); |
| 43 | EXPECT_TRUE(number2.IsSigned()); |
| 44 | EXPECT_EQ(-100, number2.GetSigned()); |
| 45 | EXPECT_FLOAT_EQ(-100.001f, number2.GetFloat()); |
| 46 | } |
| 47 | |
| 48 | TEST(fxnumber, FromStringUnsigned) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 49 | struct TestCase { |
| 50 | const char* input; |
| 51 | int expected_output; |
| 52 | }; |
| 53 | |
| 54 | auto test_func = [](pdfium::span<const TestCase> test_cases) { |
| 55 | for (const auto& test : test_cases) { |
| 56 | FX_Number number(test.input); |
| 57 | EXPECT_TRUE(number.IsInteger()); |
| 58 | EXPECT_FALSE(number.IsSigned()); |
| 59 | EXPECT_EQ(test.expected_output, number.GetSigned()); |
| 60 | } |
| 61 | }; |
| 62 | |
| 63 | static constexpr TestCase kNormalCases[] = { |
| 64 | {"", 0}, |
| 65 | {"0", 0}, |
| 66 | {"10", 10}, |
| 67 | }; |
| 68 | test_func(kNormalCases); |
| 69 | |
| 70 | static constexpr TestCase kOverflowCases[] = { |
| 71 | {"4223423494965252", 0}, |
| 72 | {"4294967296", 0}, |
| 73 | {"4294967297", 0}, |
| 74 | {"5000000000", 0}, |
| 75 | }; |
| 76 | test_func(kOverflowCases); |
| 77 | |
| 78 | // No explicit sign will allow the number to go negative if retrieved as a |
| 79 | // signed value. This is needed for things like the encryption permissions |
| 80 | // flag (Table 3.20 PDF 1.7 spec) |
| 81 | static constexpr TestCase kNegativeCases[] = { |
| 82 | {"4294965252", -2044}, |
| 83 | {"4294967247", -49}, |
| 84 | {"4294967248", -48}, |
| 85 | {"4294967292", -4}, |
| 86 | {"4294967295", -1}, |
| 87 | }; |
| 88 | test_func(kNegativeCases); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | TEST(fxnumber, FromStringSigned) { |
| 92 | { |
| 93 | FX_Number number("-0"); |
| 94 | EXPECT_TRUE(number.IsInteger()); |
| 95 | EXPECT_TRUE(number.IsSigned()); |
| 96 | EXPECT_EQ(0, number.GetSigned()); |
| 97 | } |
| 98 | { |
| 99 | FX_Number number("+0"); |
| 100 | EXPECT_TRUE(number.IsInteger()); |
| 101 | EXPECT_TRUE(number.IsSigned()); |
| 102 | EXPECT_EQ(0, number.GetSigned()); |
| 103 | } |
| 104 | { |
| 105 | FX_Number number("-10"); |
| 106 | EXPECT_TRUE(number.IsInteger()); |
| 107 | EXPECT_TRUE(number.IsSigned()); |
| 108 | EXPECT_EQ(-10, number.GetSigned()); |
| 109 | } |
| 110 | { |
| 111 | FX_Number number("+10"); |
| 112 | EXPECT_TRUE(number.IsInteger()); |
| 113 | EXPECT_TRUE(number.IsSigned()); |
| 114 | EXPECT_EQ(10, number.GetSigned()); |
| 115 | } |
| 116 | { |
| 117 | FX_Number number("-2147483648"); |
| 118 | EXPECT_TRUE(number.IsInteger()); |
| 119 | EXPECT_TRUE(number.IsSigned()); |
| 120 | EXPECT_EQ(std::numeric_limits<int32_t>::min(), number.GetSigned()); |
| 121 | } |
| 122 | { |
| 123 | FX_Number number("+2147483647"); |
| 124 | EXPECT_TRUE(number.IsInteger()); |
| 125 | EXPECT_TRUE(number.IsSigned()); |
| 126 | EXPECT_EQ(std::numeric_limits<int32_t>::max(), number.GetSigned()); |
| 127 | } |
| 128 | { |
| 129 | // Value underflows. |
| 130 | FX_Number number("-2147483649"); |
| 131 | EXPECT_EQ(0, number.GetSigned()); |
| 132 | } |
| 133 | { |
| 134 | // Value overflows. |
| 135 | FX_Number number("+2147483648"); |
| 136 | EXPECT_EQ(0, number.GetSigned()); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | TEST(fxnumber, FromStringFloat) { |
| 141 | FX_Number number("3.24"); |
| 142 | EXPECT_FLOAT_EQ(3.24f, number.GetFloat()); |
| 143 | } |