// 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/format_macros.h"
#include "base/macros.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
template <typename INT>
struct IntToStringTest {
INT num;
const char* sexpected;
const char* uexpected;
};
} // namespace
TEST(StringNumberConversionsTest, IntToString) {
static const IntToStringTest<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 IntToStringTest<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 (size_t i = 0; i < arraysize(int_tests); ++i) {
const IntToStringTest<int>* test = &int_tests[i];
EXPECT_EQ(IntToString(test->num), test->sexpected);
EXPECT_EQ(IntToString16(test->num), UTF8ToUTF16(test->sexpected));
EXPECT_EQ(UintToString(test->num), test->uexpected);
EXPECT_EQ(UintToString16(test->num), UTF8ToUTF16(test->uexpected));
}
for (size_t i = 0; i < arraysize(int64_tests); ++i) {
const IntToStringTest<int64_t>* test = &int64_tests[i];
EXPECT_EQ(Int64ToString(test->num), test->sexpected);
EXPECT_EQ(Int64ToString16(test->num), UTF8ToUTF16(test->sexpected));
EXPECT_EQ(Uint64ToString(test->num), test->uexpected);
EXPECT_EQ(Uint64ToString16(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 (size_t i = 0; i < arraysize(cases); ++i)
EXPECT_EQ(cases[i].output, Uint64ToString(cases[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 (size_t i = 0; i < arraysize(cases); ++i)
EXPECT_EQ(cases[i].output, Uint64ToString(cases[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 (size_t i = 0; i < arraysize(cases); ++i) {
int output = 0;
EXPECT_EQ(cases[i].success, StringToInt(cases[i].input, &output));
EXPECT_EQ(cases[i].output, output);
string16 utf16_input = UTF8ToUTF16(cases[i].input);
output = 0;
EXPECT_EQ(cases[i].success, StringToInt(utf16_input, &output));
EXPECT_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[] = "6\06";
std::string input_string(input, arraysize(input) - 1);
int output;
EXPECT_FALSE(StringToInt(input_string, &output));
EXPECT_EQ(6, output);
string16 utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToInt(utf16_input, &output));
EXPECT_EQ(6, output);
output = 0;
const char16 negative_wide_input[] = { 0xFF4D, '4', '2', 0};
EXPECT_FALSE(StringToInt(string16(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 (size_t i = 0; i < arraysize(cases); ++i) {
unsigned output = 0;
EXPECT_EQ(cases[i].success, StringToUint(cases[i].input, &output));
EXPECT_EQ(cases[i].output, output);
string16 utf16_input = UTF8ToUTF16(cases[i].input);
output = 0;
EXPECT_EQ(cases[i].success, StringToUint(utf16_input, &output));
EXPECT_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[] = "6\06";
std::string input_string(input, arraysize(input) - 1);
unsigned output;
EXPECT_FALSE(StringToUint(input_string, &output));
EXPECT_EQ(6U, output);
string16 utf16_input = UTF8ToUTF16(input_string);
output = 0;
EXPECT_FALSE(StringToUint(utf16_input, &output));
EXPECT_EQ(6U, output);
output = 0;
const char16 negative_wide_input[] = { 0xFF4D, '4', '2', 0};
EXPECT_FALSE(StringToUint(string16(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 (size_t i = 0; i < arraysize(cases); ++i) {
int64_t output = 0;
EXPECT_EQ(cases[i].success, StringToInt64(cases[i].input, &output));
EXPECT_EQ(cases[i].output, output);
string16 utf16_input = UTF8ToUTF16(cases[i].input);
output = 0;
EXPECT_EQ(cases[i].success, StringToInt64(utf16_input, &output));
EXPECT_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[] = "6\06";
std::string input_string(input, arraysize(input) - 1);
int64_t output;
EXPECT_FALSE(StringToInt64(input_string, &output));
EXPECT_EQ(6, output);
string16 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 (size_t i = 0; i < arraysize(cases); ++i) {
uint64_t output = 0;
EXPECT_EQ(cases[i].success, StringToUint64(cases[i].input, &output));
EXPECT_EQ(cases[i].output, output);
string16 utf16_input = UTF8ToUTF16(cases[i].input);
output = 0;
EXPECT_EQ(cases[i].success, StringToUint64(utf16_input, &output));
EXPECT_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[] = "6\06";
std::string input_string(input, arraysize(input) - 1);
uint64_t output;
EXPECT_FALSE(StringToUint64(input_string, &output));
EXPECT_EQ(6U, output);
string16 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 (size_t i = 0; i < arraysize(cases); ++i) {
size_t output = 0;
EXPECT_EQ(cases[i].success, StringToSizeT(cases[i].input, &output));
EXPECT_EQ(cases[i].output, output);
string16 utf16_input = UTF8ToUTF16(cases[i].input);
output = 0;
EXPECT_EQ(cases[i].success, StringToSizeT(utf16_input, &output));
EXPECT_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[] = "6\06";
std::string input_string(input, arraysize(input) - 1);
size_t output;
EXPECT_FALSE(StringToSizeT(input_string, &output));
EXPECT_EQ(6U, output);
string16 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 (size_t i = 0; i < arraysize(cases); ++i) {
int output = 0;
EXPECT_EQ(cases[i].success, HexStringToInt(cases[i].input, &output));
EXPECT_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[] = "0xc0ffee\0" "9";
std::string input_string(input, arraysize(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 (size_t i = 0; i < arraysize(cases); ++i) {
uint32_t output = 0;
EXPECT_EQ(cases[i].success, HexStringToUInt(cases[i].input, &output));
EXPECT_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[] = "0xc0ffee\0" "9";
std::string input_string(input, arraysize(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 (size_t i = 0; i < arraysize(cases); ++i) {
int64_t output = 0;
EXPECT_EQ(cases[i].success, HexStringToInt64(cases[i].input, &output));
EXPECT_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[] = "0xc0ffee\0" "9";
std::string input_string(input, arraysize(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 (size_t i = 0; i < arraysize(cases); ++i) {
uint64_t output = 0;
EXPECT_EQ(cases[i].success, HexStringToUInt64(cases[i].input, &output));
EXPECT_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[] = "0xc0ffee\0" "9";
std::string input_string(input, arraysize(input) - 1);
uint64_t output;
EXPECT_FALSE(HexStringToUInt64(input_string, &output));
EXPECT_EQ(0xc0ffeeU, output);
}
TEST(StringNumberConversionsTest, HexStringToBytes) {
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 i = 0; i < arraysize(cases); ++i) {
std::vector<uint8_t> output;
std::vector<uint8_t> compare;
EXPECT_EQ(cases[i].success, HexStringToBytes(cases[i].input, &output)) <<
i << ": " << cases[i].input;
for (size_t j = 0; j < cases[i].output_len; ++j)
compare.push_back(static_cast<uint8_t>(cases[i].output[j]));
ASSERT_EQ(output.size(), compare.size()) << i << ": " << cases[i].input;
EXPECT_TRUE(std::equal(output.begin(), output.end(), compare.begin())) <<
i << ": " << cases[i].input;
}
}
TEST(StringNumberConversionsTest, StringToDouble) {
static const struct {
std::string input;
double output;
bool success;
} cases[] = {
{"0", 0.0, true},
{"42", 42.0, true},
{"-42", -42.0, true},
{"123.45", 123.45, true},
{"-123.45", -123.45, true},
{"+123.45", 123.45, true},
{"2.99792458e8", 299792458.0, true},
{"149597870.691E+3", 149597870691.0, true},
{"6.", 6.0, true},
{"9e99999999999999999999", std::numeric_limits<double>::infinity(),
false},
{"-9e99999999999999999999", -std::numeric_limits<double>::infinity(),
false},
{"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},
{"\t\n\v\f\r -123.45e2", -12345.0, false},
{"+123 e4", 123.0, false},
{"123e ", 123.0, false},
{"123e", 123.0, false},
{" 2.99", 2.99, false},
{"1e3.4", 1000.0, false},
{"nothing", 0.0, false},
{"-", 0.0, false},
{"+", 0.0, false},
{"", 0.0, false},
};
for (size_t i = 0; i < arraysize(cases); ++i) {
double output;
errno = 1;
EXPECT_EQ(cases[i].success, StringToDouble(cases[i].input, &output))
<< "for input=" << cases[i].input << "got output=" << 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, arraysize(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"},
{1.25, "1.25"},
{1.33518e+012, "1335180000000.0"},
{1.33489e+012, "1334890000000.0"},
{1.33505e+012, "1335050000000.0"},
{1.33545e+009, "1335450000.0"},
{1.33503e+009, "1335030000.0"},
};
for (size_t i = 0; i < arraysize(cases); ++i) {
EXPECT_EQ(cases[i].expected, DoubleToString(cases[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, arraysize(input_bytes));
EXPECT_EQ("1335179083776.0", DoubleToString(input));
const char input_bytes2[8] =
{0, 0, 0, '\xa0', '\xda', '\x6c', '\x73', '\x42'};
input = 0;
memcpy(&input, input_bytes2, arraysize(input_bytes2));
EXPECT_EQ("1334890332160.0", DoubleToString(input));
}
TEST(StringNumberConversionsTest, HexEncode) {
std::string hex(HexEncode(NULL, 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);
}
} // namespace base