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quiche / googleurl / 643329026355a2ea6c076e125a508eeffd16ee58 / . / base / strings / string_number_conversions_unittest.cc
blob: 34f811eae18328c51f13b287ea91178840d54fa8 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/strings/string_number_conversions.h"
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <cmath>
#include <limits>
#include "base/bit_cast.h"
#include "base/format_macros.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gurl_base {
namespace {
template <typename INT>
struct NumberToStringTest {
INT num;
const char* sexpected;
const char* uexpected;
};
} // namespace
TEST(StringNumberConversionsTest, NumberToString) {
static const NumberToStringTest<int> int_tests[] = {
{0, "0", "0"},
{-1, "-1", "4294967295"},
{std::numeric_limits<int>::max(), "2147483647", "2147483647"},
{std::numeric_limits<int>::min(), "-2147483648", "2147483648"},
};
static const NumberToStringTest<int64_t> int64_tests[] = {
{0, "0", "0"},
{-1, "-1", "18446744073709551615"},
{
std::numeric_limits<int64_t>::max(),
"9223372036854775807",
"9223372036854775807",
},
{std::numeric_limits<int64_t>::min(), "-9223372036854775808",
"9223372036854775808"},
};
for (const auto& test : int_tests) {
EXPECT_EQ(NumberToString(test.num), test.sexpected);
EXPECT_EQ(NumberToString16(test.num), UTF8ToUTF16(test.sexpected));
EXPECT_EQ(NumberToString(static_cast<unsigned>(test.num)), test.uexpected);
EXPECT_EQ(NumberToString16(static_cast<unsigned>(test.num)),
UTF8ToUTF16(test.uexpected));
}
for (const auto& test : int64_tests) {
EXPECT_EQ(NumberToString(test.num), test.sexpected);
EXPECT_EQ(NumberToString16(test.num), UTF8ToUTF16(test.sexpected));
EXPECT_EQ(NumberToString(static_cast<uint64_t>(test.num)), test.uexpected);
EXPECT_EQ(NumberToString16(static_cast<uint64_t>(test.num)),
UTF8ToUTF16(test.uexpected));
}
}
TEST(StringNumberConversionsTest, Uint64ToString) {
static const struct {
uint64_t input;
std::string output;
} cases[] = {
{0, "0"},
{42, "42"},
{INT_MAX, "2147483647"},
{std::numeric_limits<uint64_t>::max(), "18446744073709551615"},
};
for (const auto& i : cases)
EXPECT_EQ(i.output, NumberToString(i.input));
}
TEST(StringNumberConversionsTest, SizeTToString) {
size_t size_t_max = std::numeric_limits<size_t>::max();
std::string size_t_max_string = StringPrintf("%" PRIuS, size_t_max);
static const struct {
size_t input;
std::string output;
} cases[] = {
{0, "0"},
{9, "9"},
{42, "42"},
{INT_MAX, "2147483647"},
{2147483648U, "2147483648"},
#if SIZE_MAX > 4294967295U
{99999999999U, "99999999999"},
#endif
{size_t_max, size_t_max_string},
};
for (const auto& i : cases)
EXPECT_EQ(i.output, NumberToString(i.input));
}
TEST(StringNumberConversionsTest, StringToInt) {
static const struct {
std::string input;
int output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 42, true},
{"42\x99", 42, false},
{"\x99"
"42\x99",
0, false},
{"-2147483648", INT_MIN, true},
{"2147483647", INT_MAX, true},
{"", 0, false},
{" 42", 42, false},
{"42 ", 42, false},
{"\t\n\v\f\r 42", 42, false},
{"blah42", 0, false},
{"42blah", 42, false},
{"blah42blah", 0, false},
{"-273.15", -273, false},
{"+98.6", 98, false},
{"--123", 0, false},
{"++123", 0, false},
{"-+123", 0, false},
{"+-123", 0, false},
{"-", 0, false},
{"-2147483649", INT_MIN, false},
{"-99999999999", INT_MIN, false},
{"2147483648", INT_MAX, false},
{"99999999999", INT_MAX, false},
};
for (const auto& i : cases) {
int output = i.output ^ 1; // Ensure StringToInt wrote something.
EXPECT_EQ(i.success, StringToInt(i.input, &output));
EXPECT_EQ(i.output, output);
std::u16string utf16_input = UTF8ToUTF16(i.input);
output = i.output ^ 1; // Ensure StringToInt wrote something.
EXPECT_EQ(i.success, StringToInt(utf16_input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"6\0"
"6";
std::string input_string(input, std::size(input) - 1);
int output;
EXPECT_FALSE(StringToInt(input_string, &output));
EXPECT_EQ(6, output);
std::u16string utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToInt(utf16_input, &output));
EXPECT_EQ(6, output);
output = 0;
const char16_t negative_wide_input[] = {0xFF4D, '4', '2', 0};
EXPECT_FALSE(StringToInt(std::u16string(negative_wide_input), &output));
EXPECT_EQ(0, output);
}
TEST(StringNumberConversionsTest, StringToUint) {
static const struct {
std::string input;
unsigned output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 42, true},
{"42\x99", 42, false},
{"\x99"
"42\x99",
0, false},
{"-2147483648", 0, false},
{"2147483647", INT_MAX, true},
{"", 0, false},
{" 42", 42, false},
{"42 ", 42, false},
{"\t\n\v\f\r 42", 42, false},
{"blah42", 0, false},
{"42blah", 42, false},
{"blah42blah", 0, false},
{"-273.15", 0, false},
{"+98.6", 98, false},
{"--123", 0, false},
{"++123", 0, false},
{"-+123", 0, false},
{"+-123", 0, false},
{"-", 0, false},
{"-2147483649", 0, false},
{"-99999999999", 0, false},
{"4294967295", UINT_MAX, true},
{"4294967296", UINT_MAX, false},
{"99999999999", UINT_MAX, false},
};
for (const auto& i : cases) {
unsigned output = i.output ^ 1; // Ensure StringToUint wrote something.
EXPECT_EQ(i.success, StringToUint(i.input, &output));
EXPECT_EQ(i.output, output);
std::u16string utf16_input = UTF8ToUTF16(i.input);
output = i.output ^ 1; // Ensure StringToUint wrote something.
EXPECT_EQ(i.success, StringToUint(utf16_input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"6\0"
"6";
std::string input_string(input, std::size(input) - 1);
unsigned output;
EXPECT_FALSE(StringToUint(input_string, &output));
EXPECT_EQ(6U, output);
std::u16string utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToUint(utf16_input, &output));
EXPECT_EQ(6U, output);
output = 0;
const char16_t negative_wide_input[] = {0xFF4D, '4', '2', 0};
EXPECT_FALSE(StringToUint(std::u16string(negative_wide_input), &output));
EXPECT_EQ(0U, output);
}
TEST(StringNumberConversionsTest, StringToInt64) {
static const struct {
std::string input;
int64_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 42, true},
{"-2147483648", INT_MIN, true},
{"2147483647", INT_MAX, true},
{"-2147483649", INT64_C(-2147483649), true},
{"-99999999999", INT64_C(-99999999999), true},
{"2147483648", INT64_C(2147483648), true},
{"99999999999", INT64_C(99999999999), true},
{"9223372036854775807", std::numeric_limits<int64_t>::max(), true},
{"-9223372036854775808", std::numeric_limits<int64_t>::min(), true},
{"09", 9, true},
{"-09", -9, true},
{"", 0, false},
{" 42", 42, false},
{"42 ", 42, false},
{"0x42", 0, false},
{"\t\n\v\f\r 42", 42, false},
{"blah42", 0, false},
{"42blah", 42, false},
{"blah42blah", 0, false},
{"-273.15", -273, false},
{"+98.6", 98, false},
{"--123", 0, false},
{"++123", 0, false},
{"-+123", 0, false},
{"+-123", 0, false},
{"-", 0, false},
{"-9223372036854775809", std::numeric_limits<int64_t>::min(), false},
{"-99999999999999999999", std::numeric_limits<int64_t>::min(), false},
{"9223372036854775808", std::numeric_limits<int64_t>::max(), false},
{"99999999999999999999", std::numeric_limits<int64_t>::max(), false},
};
for (const auto& i : cases) {
int64_t output = 0;
EXPECT_EQ(i.success, StringToInt64(i.input, &output));
EXPECT_EQ(i.output, output);
std::u16string utf16_input = UTF8ToUTF16(i.input);
output = 0;
EXPECT_EQ(i.success, StringToInt64(utf16_input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"6\0"
"6";
std::string input_string(input, std::size(input) - 1);
int64_t output;
EXPECT_FALSE(StringToInt64(input_string, &output));
EXPECT_EQ(6, output);
std::u16string utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToInt64(utf16_input, &output));
EXPECT_EQ(6, output);
}
TEST(StringNumberConversionsTest, StringToUint64) {
static const struct {
std::string input;
uint64_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 42, true},
{"-2147483648", 0, false},
{"2147483647", INT_MAX, true},
{"-2147483649", 0, false},
{"-99999999999", 0, false},
{"2147483648", UINT64_C(2147483648), true},
{"99999999999", UINT64_C(99999999999), true},
{"9223372036854775807", std::numeric_limits<int64_t>::max(), true},
{"-9223372036854775808", 0, false},
{"09", 9, true},
{"-09", 0, false},
{"", 0, false},
{" 42", 42, false},
{"42 ", 42, false},
{"0x42", 0, false},
{"\t\n\v\f\r 42", 42, false},
{"blah42", 0, false},
{"42blah", 42, false},
{"blah42blah", 0, false},
{"-273.15", 0, false},
{"+98.6", 98, false},
{"--123", 0, false},
{"++123", 0, false},
{"-+123", 0, false},
{"+-123", 0, false},
{"-", 0, false},
{"-9223372036854775809", 0, false},
{"-99999999999999999999", 0, false},
{"9223372036854775808", UINT64_C(9223372036854775808), true},
{"99999999999999999999", std::numeric_limits<uint64_t>::max(), false},
{"18446744073709551615", std::numeric_limits<uint64_t>::max(), true},
{"18446744073709551616", std::numeric_limits<uint64_t>::max(), false},
};
for (const auto& i : cases) {
uint64_t output = 0;
EXPECT_EQ(i.success, StringToUint64(i.input, &output));
EXPECT_EQ(i.output, output);
std::u16string utf16_input = UTF8ToUTF16(i.input);
output = 0;
EXPECT_EQ(i.success, StringToUint64(utf16_input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"6\0"
"6";
std::string input_string(input, std::size(input) - 1);
uint64_t output;
EXPECT_FALSE(StringToUint64(input_string, &output));
EXPECT_EQ(6U, output);
std::u16string utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToUint64(utf16_input, &output));
EXPECT_EQ(6U, output);
}
TEST(StringNumberConversionsTest, StringToSizeT) {
size_t size_t_max = std::numeric_limits<size_t>::max();
std::string size_t_max_string = StringPrintf("%" PRIuS, size_t_max);
static const struct {
std::string input;
size_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 42, true},
{"-2147483648", 0, false},
{"2147483647", INT_MAX, true},
{"-2147483649", 0, false},
{"-99999999999", 0, false},
{"2147483648", 2147483648U, true},
#if SIZE_MAX > 4294967295U
{"99999999999", 99999999999U, true},
#endif
{"-9223372036854775808", 0, false},
{"09", 9, true},
{"-09", 0, false},
{"", 0, false},
{" 42", 42, false},
{"42 ", 42, false},
{"0x42", 0, false},
{"\t\n\v\f\r 42", 42, false},
{"blah42", 0, false},
{"42blah", 42, false},
{"blah42blah", 0, false},
{"-273.15", 0, false},
{"+98.6", 98, false},
{"--123", 0, false},
{"++123", 0, false},
{"-+123", 0, false},
{"+-123", 0, false},
{"-", 0, false},
{"-9223372036854775809", 0, false},
{"-99999999999999999999", 0, false},
{"999999999999999999999999", size_t_max, false},
{size_t_max_string, size_t_max, true},
};
for (const auto& i : cases) {
size_t output = 0;
EXPECT_EQ(i.success, StringToSizeT(i.input, &output));
EXPECT_EQ(i.output, output);
std::u16string utf16_input = UTF8ToUTF16(i.input);
output = 0;
EXPECT_EQ(i.success, StringToSizeT(utf16_input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"6\0"
"6";
std::string input_string(input, std::size(input) - 1);
size_t output;
EXPECT_FALSE(StringToSizeT(input_string, &output));
EXPECT_EQ(6U, output);
std::u16string utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToSizeT(utf16_input, &output));
EXPECT_EQ(6U, output);
}
TEST(StringNumberConversionsTest, HexStringToInt) {
static const struct {
std::string input;
int64_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 66, true},
{"-42", -66, true},
{"+42", 66, true},
{"7fffffff", INT_MAX, true},
{"-80000000", INT_MIN, true},
{"80000000", INT_MAX, false}, // Overflow test.
{"-80000001", INT_MIN, false}, // Underflow test.
{"0x42", 66, true},
{"-0x42", -66, true},
{"+0x42", 66, true},
{"0x7fffffff", INT_MAX, true},
{"-0x80000000", INT_MIN, true},
{"-80000000", INT_MIN, true},
{"80000000", INT_MAX, false}, // Overflow test.
{"-80000001", INT_MIN, false}, // Underflow test.
{"0x0f", 15, true},
{"0f", 15, true},
{" 45", 0x45, false},
{"\t\n\v\f\r 0x45", 0x45, false},
{" 45", 0x45, false},
{"45 ", 0x45, false},
{"45:", 0x45, false},
{"efgh", 0xef, false},
{"0xefgh", 0xef, false},
{"hgfe", 0, false},
{"-", 0, false},
{"", 0, false},
{"0x", 0, false},
};
for (const auto& i : cases) {
int output = 0;
EXPECT_EQ(i.success, HexStringToInt(i.input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"0xc0ffee\0"
"9";
std::string input_string(input, std::size(input) - 1);
int output;
EXPECT_FALSE(HexStringToInt(input_string, &output));
EXPECT_EQ(0xc0ffee, output);
}
TEST(StringNumberConversionsTest, HexStringToUInt) {
static const struct {
std::string input;
uint32_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 0x42, true},
{"-42", 0, false},
{"+42", 0x42, true},
{"7fffffff", INT_MAX, true},
{"-80000000", 0, false},
{"ffffffff", 0xffffffff, true},
{"DeadBeef", 0xdeadbeef, true},
{"0x42", 0x42, true},
{"-0x42", 0, false},
{"+0x42", 0x42, true},
{"0x7fffffff", INT_MAX, true},
{"-0x80000000", 0, false},
{"0xffffffff", std::numeric_limits<uint32_t>::max(), true},
{"0XDeadBeef", 0xdeadbeef, true},
{"0x7fffffffffffffff", std::numeric_limits<uint32_t>::max(),
false}, // Overflow test.
{"-0x8000000000000000", 0, false},
{"0x8000000000000000", std::numeric_limits<uint32_t>::max(),
false}, // Overflow test.
{"-0x8000000000000001", 0, false},
{"0xFFFFFFFFFFFFFFFF", std::numeric_limits<uint32_t>::max(),
false}, // Overflow test.
{"FFFFFFFFFFFFFFFF", std::numeric_limits<uint32_t>::max(),
false}, // Overflow test.
{"0x0000000000000000", 0, true},
{"0000000000000000", 0, true},
{"1FFFFFFFFFFFFFFFF", std::numeric_limits<uint32_t>::max(),
false}, // Overflow test.
{"0x0f", 0x0f, true},
{"0f", 0x0f, true},
{" 45", 0x45, false},
{"\t\n\v\f\r 0x45", 0x45, false},
{" 45", 0x45, false},
{"45 ", 0x45, false},
{"45:", 0x45, false},
{"efgh", 0xef, false},
{"0xefgh", 0xef, false},
{"hgfe", 0, false},
{"-", 0, false},
{"", 0, false},
{"0x", 0, false},
};
for (const auto& i : cases) {
uint32_t output = 0;
EXPECT_EQ(i.success, HexStringToUInt(i.input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"0xc0ffee\0"
"9";
std::string input_string(input, std::size(input) - 1);
uint32_t output;
EXPECT_FALSE(HexStringToUInt(input_string, &output));
EXPECT_EQ(0xc0ffeeU, output);
}
TEST(StringNumberConversionsTest, HexStringToInt64) {
static const struct {
std::string input;
int64_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 66, true},
{"-42", -66, true},
{"+42", 66, true},
{"40acd88557b", INT64_C(4444444448123), true},
{"7fffffff", INT_MAX, true},
{"-80000000", INT_MIN, true},
{"ffffffff", 0xffffffff, true},
{"DeadBeef", 0xdeadbeef, true},
{"0x42", 66, true},
{"-0x42", -66, true},
{"+0x42", 66, true},
{"0x40acd88557b", INT64_C(4444444448123), true},
{"0x7fffffff", INT_MAX, true},
{"-0x80000000", INT_MIN, true},
{"0xffffffff", 0xffffffff, true},
{"0XDeadBeef", 0xdeadbeef, true},
{"0x7fffffffffffffff", std::numeric_limits<int64_t>::max(), true},
{"-0x8000000000000000", std::numeric_limits<int64_t>::min(), true},
{"0x8000000000000000", std::numeric_limits<int64_t>::max(),
false}, // Overflow test.
{"-0x8000000000000001", std::numeric_limits<int64_t>::min(),
false}, // Underflow test.
{"0x0f", 15, true},
{"0f", 15, true},
{" 45", 0x45, false},
{"\t\n\v\f\r 0x45", 0x45, false},
{" 45", 0x45, false},
{"45 ", 0x45, false},
{"45:", 0x45, false},
{"efgh", 0xef, false},
{"0xefgh", 0xef, false},
{"hgfe", 0, false},
{"-", 0, false},
{"", 0, false},
{"0x", 0, false},
};
for (const auto& i : cases) {
int64_t output = 0;
EXPECT_EQ(i.success, HexStringToInt64(i.input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"0xc0ffee\0"
"9";
std::string input_string(input, std::size(input) - 1);
int64_t output;
EXPECT_FALSE(HexStringToInt64(input_string, &output));
EXPECT_EQ(0xc0ffee, output);
}
TEST(StringNumberConversionsTest, HexStringToUInt64) {
static const struct {
std::string input;
uint64_t output;
bool success;
} cases[] = {
{"0", 0, true},
{"42", 66, true},
{"-42", 0, false},
{"+42", 66, true},
{"40acd88557b", INT64_C(4444444448123), true},
{"7fffffff", INT_MAX, true},
{"-80000000", 0, false},
{"ffffffff", 0xffffffff, true},
{"DeadBeef", 0xdeadbeef, true},
{"0x42", 66, true},
{"-0x42", 0, false},
{"+0x42", 66, true},
{"0x40acd88557b", INT64_C(4444444448123), true},
{"0x7fffffff", INT_MAX, true},
{"-0x80000000", 0, false},
{"0xffffffff", 0xffffffff, true},
{"0XDeadBeef", 0xdeadbeef, true},
{"0x7fffffffffffffff", std::numeric_limits<int64_t>::max(), true},
{"-0x8000000000000000", 0, false},
{"0x8000000000000000", UINT64_C(0x8000000000000000), true},
{"-0x8000000000000001", 0, false},
{"0xFFFFFFFFFFFFFFFF", std::numeric_limits<uint64_t>::max(), true},
{"FFFFFFFFFFFFFFFF", std::numeric_limits<uint64_t>::max(), true},
{"0x0000000000000000", 0, true},
{"0000000000000000", 0, true},
{"1FFFFFFFFFFFFFFFF", std::numeric_limits<uint64_t>::max(),
false}, // Overflow test.
{"0x0f", 15, true},
{"0f", 15, true},
{" 45", 0x45, false},
{"\t\n\v\f\r 0x45", 0x45, false},
{" 45", 0x45, false},
{"45 ", 0x45, false},
{"45:", 0x45, false},
{"efgh", 0xef, false},
{"0xefgh", 0xef, false},
{"hgfe", 0, false},
{"-", 0, false},
{"", 0, false},
{"0x", 0, false},
};
for (const auto& i : cases) {
uint64_t output = 0;
EXPECT_EQ(i.success, HexStringToUInt64(i.input, &output));
EXPECT_EQ(i.output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"0xc0ffee\0"
"9";
std::string input_string(input, std::size(input) - 1);
uint64_t output;
EXPECT_FALSE(HexStringToUInt64(input_string, &output));
EXPECT_EQ(0xc0ffeeU, output);
}
// Tests for HexStringToBytes, HexStringToString, HexStringToSpan.
TEST(StringNumberConversionsTest, HexStringToBytesStringSpan) {
static const struct {
const std::string input;
const char* output;
size_t output_len;
bool success;
} cases[] = {
{"0", "", 0, false}, // odd number of characters fails
{"00", "\0", 1, true},
{"42", "\x42", 1, true},
{"-42", "", 0, false}, // any non-hex value fails
{"+42", "", 0, false},
{"7fffffff", "\x7f\xff\xff\xff", 4, true},
{"80000000", "\x80\0\0\0", 4, true},
{"deadbeef", "\xde\xad\xbe\xef", 4, true},
{"DeadBeef", "\xde\xad\xbe\xef", 4, true},
{"0x42", "", 0, false}, // leading 0x fails (x is not hex)
{"0f", "\xf", 1, true},
{"45 ", "\x45", 1, false},
{"efgh", "\xef", 1, false},
{"", "", 0, false},
{"0123456789ABCDEF", "\x01\x23\x45\x67\x89\xAB\xCD\xEF", 8, true},
{"0123456789ABCDEF012345", "\x01\x23\x45\x67\x89\xAB\xCD\xEF\x01\x23\x45",
11, true},
};
for (size_t test_i = 0; test_i < std::size(cases); ++test_i) {
const auto& test = cases[test_i];
std::string expected_output(test.output, test.output_len);
// Test HexStringToBytes().
{
std::vector<uint8_t> output;
EXPECT_EQ(test.success, HexStringToBytes(test.input, &output))
<< test_i << ": " << test.input;
EXPECT_EQ(expected_output, std::string(output.begin(), output.end()));
}
// Test HexStringToString().
{
std::string output;
EXPECT_EQ(test.success, HexStringToString(test.input, &output))
<< test_i << ": " << test.input;
EXPECT_EQ(expected_output, output) << test_i << ": " << test.input;
}
// Test HexStringToSpan() with a properly sized output.
{
std::vector<uint8_t> output;
output.resize(test.input.size() / 2);
EXPECT_EQ(test.success, HexStringToSpan(test.input, output))
<< test_i << ": " << test.input;
// On failure the output will only have been partially written (with
// everything after the failure being 0).
for (size_t i = 0; i < test.output_len; ++i) {
EXPECT_EQ(test.output[i], static_cast<char>(output[i]))
<< test_i << ": " << test.input;
}
for (size_t i = test.output_len; i < output.size(); ++i) {
EXPECT_EQ('\0', static_cast<char>(output[i]))
<< test_i << ": " << test.input;
}
}
// Test HexStringToSpan() with an output that is 1 byte too small.
{
std::vector<uint8_t> output;
if (test.input.size() > 1)
output.resize(test.input.size() / 2 - 1);
EXPECT_FALSE(HexStringToSpan(test.input, output))
<< test_i << ": " << test.input;
}
// Test HexStringToSpan() with an output that is 1 byte too large.
{
std::vector<uint8_t> output;
output.resize(test.input.size() / 2 + 1);
EXPECT_FALSE(HexStringToSpan(test.input, output))
<< test_i << ": " << test.input;
}
}
}
TEST(StringNumberConversionsTest, StringToDouble) {
static const struct {
std::string input;
double output;
bool success;
} cases[] = {
// Test different forms of zero.
{"0", 0.0, true},
{"+0", 0.0, true},
{"-0", 0.0, true},
{"0.0", 0.0, true},
{"000000000000000000000000000000.0", 0.0, true},
{"0.000000000000000000000000000", 0.0, true},
// Test the answer.
{"42", 42.0, true},
{"-42", -42.0, true},
// Test variances of an ordinary number.
{"123.45", 123.45, true},
{"-123.45", -123.45, true},
{"+123.45", 123.45, true},
// Test different forms of representation.
{"2.99792458e8", 299792458.0, true},
{"149597870.691E+3", 149597870691.0, true},
{"6.", 6.0, true},
// Test around the largest/smallest value that a double can represent.
{"9e307", 9e307, true},
{"1.7976e308", 1.7976e308, true},
{"1.7977e308", HUGE_VAL, false},
{"1.797693134862315807e+308", HUGE_VAL, true},
{"1.797693134862315808e+308", HUGE_VAL, false},
{"9e308", HUGE_VAL, false},
{"9e309", HUGE_VAL, false},
{"9e999", HUGE_VAL, false},
{"9e1999", HUGE_VAL, false},
{"9e19999", HUGE_VAL, false},
{"9e99999999999999999999", HUGE_VAL, false},
{"-9e307", -9e307, true},
{"-1.7976e308", -1.7976e308, true},
{"-1.7977e308", -HUGE_VAL, false},
{"-1.797693134862315807e+308", -HUGE_VAL, true},
{"-1.797693134862315808e+308", -HUGE_VAL, false},
{"-9e308", -HUGE_VAL, false},
{"-9e309", -HUGE_VAL, false},
{"-9e999", -HUGE_VAL, false},
{"-9e1999", -HUGE_VAL, false},
{"-9e19999", -HUGE_VAL, false},
{"-9e99999999999999999999", -HUGE_VAL, false},
// Test more exponents.
{"1e-2", 0.01, true},
{"42 ", 42.0, false},
{" 1e-2", 0.01, false},
{"1e-2 ", 0.01, false},
{"-1E-7", -0.0000001, true},
{"01e02", 100, true},
{"2.3e15", 2.3e15, true},
{"100e-309", 100e-309, true},
// Test some invalid cases.
{"\t\n\v\f\r -123.45e2", -12345.0, false},
{"+123 e4", 123.0, false},
{"123e ", 123.0, false},
{"123e", 123.0, false},
{"10.5px", 10.5, false},
{"11.5e2em", 1150, false},
{" 2.99", 2.99, false},
{"1e3.4", 1000.0, false},
{"nothing", 0.0, false},
{"-", 0.0, false},
{"+", 0.0, false},
{"", 0.0, false},
// crbug.org/588726
{"-0.0010000000000000000000000000000000000000001e-256",
-1.0000000000000001e-259, true},
};
for (size_t i = 0; i < std::size(cases); ++i) {
SCOPED_TRACE(
StringPrintf("case %" PRIuS " \"%s\"", i, cases[i].input.c_str()));
double output;
errno = 1;
EXPECT_EQ(cases[i].success, StringToDouble(cases[i].input, &output));
if (cases[i].success)
EXPECT_EQ(1, errno) << i; // confirm that errno is unchanged.
EXPECT_DOUBLE_EQ(cases[i].output, output);
}
// One additional test to verify that conversion of numbers in strings with
// embedded NUL characters. The NUL and extra data after it should be
// interpreted as junk after the number.
const char input[] =
"3.14\0"
"159";
std::string input_string(input, std::size(input) - 1);
double output;
EXPECT_FALSE(StringToDouble(input_string, &output));
EXPECT_DOUBLE_EQ(3.14, output);
}
TEST(StringNumberConversionsTest, DoubleToString) {
static const struct {
double input;
const char* expected;
} cases[] = {
{0.0, "0"},
{0.5, "0.5"},
{1.25, "1.25"},
{1.33518e+012, "1.33518e+12"},
{1.33489e+012, "1.33489e+12"},
{1.33505e+012, "1.33505e+12"},
{1.33545e+009, "1335450000"},
{1.33503e+009, "1335030000"},
};
for (const auto& i : cases) {
EXPECT_EQ(i.expected, NumberToString(i.input));
EXPECT_EQ(i.expected, UTF16ToUTF8(NumberToString16(i.input)));
}
// The following two values were seen in crashes in the wild.
const char input_bytes[8] = {0, 0, 0, 0, '\xee', '\x6d', '\x73', '\x42'};
double input = 0;
memcpy(&input, input_bytes, std::size(input_bytes));
EXPECT_EQ("1.335179083776e+12", NumberToString(input));
const char input_bytes2[8] = {0, 0, 0, '\xa0',
'\xda', '\x6c', '\x73', '\x42'};
input = 0;
memcpy(&input, input_bytes2, std::size(input_bytes2));
EXPECT_EQ("1.33489033216e+12", NumberToString(input));
}
TEST(StringNumberConversionsTest, HexEncode) {
std::string hex(HexEncode(nullptr, 0));
EXPECT_EQ(hex.length(), 0U);
unsigned char bytes[] = {0x01, 0xff, 0x02, 0xfe, 0x03, 0x80, 0x81};
hex = HexEncode(bytes, sizeof(bytes));
EXPECT_EQ(hex.compare("01FF02FE038081"), 0);
}
// Test cases of known-bad strtod conversions that motivated the use of dmg_fp.
// See https://bugs.chromium.org/p/chromium/issues/detail?id=593512.
TEST(StringNumberConversionsTest, StrtodFailures) {
static const struct {
const char* input;
uint64_t expected;
} cases[] = {
// http://www.exploringbinary.com/incorrectly-rounded-conversions-in-visual-c-plus-plus/
{"9214843084008499", 0x43405e6cec57761aULL},
{"0.500000000000000166533453693773481063544750213623046875",
0x3fe0000000000002ULL},
{"30078505129381147446200", 0x44997a3c7271b021ULL},
{"1777820000000000000001", 0x4458180d5bad2e3eULL},
{"0.500000000000000166547006220929549868969843373633921146392822265625",
0x3fe0000000000002ULL},
{"0.50000000000000016656055874808561867439493653364479541778564453125",
0x3fe0000000000002ULL},
{"0.3932922657273", 0x3fd92bb352c4623aULL},
// http://www.exploringbinary.com/incorrectly-rounded-conversions-in-gcc-and-glibc/
{"0.500000000000000166533453693773481063544750213623046875",
0x3fe0000000000002ULL},
{"3.518437208883201171875e13", 0x42c0000000000002ULL},
{"62.5364939768271845828", 0x404f44abd5aa7ca4ULL},
{"8.10109172351e-10", 0x3e0bd5cbaef0fd0cULL},
{"1.50000000000000011102230246251565404236316680908203125",
0x3ff8000000000000ULL},
{"9007199254740991.4999999999999999999999999999999995",
0x433fffffffffffffULL},
// http://www.exploringbinary.com/incorrect-decimal-to-floating-point-conversion-in-sqlite/
{"1e-23", 0x3b282db34012b251ULL},
{"8.533e+68", 0x4e3fa69165a8eea2ULL},
{"4.1006e-184", 0x19dbe0d1c7ea60c9ULL},
{"9.998e+307", 0x7fe1cc0a350ca87bULL},
{"9.9538452227e-280", 0x0602117ae45cde43ULL},
{"6.47660115e-260", 0x0a1fdd9e333badadULL},
{"7.4e+47", 0x49e033d7eca0adefULL},
{"5.92e+48", 0x4a1033d7eca0adefULL},
{"7.35e+66", 0x4dd172b70eababa9ULL},
{"8.32116e+55", 0x4b8b2628393e02cdULL},
};
for (const auto& test : cases) {
SCOPED_TRACE(StringPrintf("input: \"%s\"", test.input));
double output;
EXPECT_TRUE(StringToDouble(test.input, &output));
EXPECT_EQ(bit_cast<uint64_t>(output), test.expected);
}
}
} // namespace base