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lexical_cast/test/lexical_cast_test.cpp
Antony Polukhin 8f5bcd0f5e Update copyright years
2019-01-30 23:26:35 +03:00

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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Terje Sletteb and Kevlin Henney, 2005.
// Copyright Alexander Nasonov, 2006.
// Copyright Antony Polukhin, 2011-2019.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Note: The unit test no longer compile on MSVC 6, but lexical_cast itself works for it.
//
// We need this #define before any #includes: otherwise msvc will emit warnings
// deep within std::string, resulting from our (perfectly legal) use of basic_string
// with a custom traits class:
//
#define _SCL_SECURE_NO_WARNINGS
#include <boost/config.hpp>
#if defined(__INTEL_COMPILER)
#pragma warning(disable: 193 383 488 981 1418 1419)
#elif defined(BOOST_MSVC)
#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
#endif
#include <boost/lexical_cast.hpp>
#include <boost/cstdint.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/test/floating_point_comparison.hpp>
#include <boost/type_traits/integral_promotion.hpp>
#include <string>
#include <vector>
#include <algorithm> // std::transform
#include <memory>
#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) \
&& !(defined(BOOST_MSVC) && BOOST_MSVC < 1300)
#define LCAST_TEST_LONGLONG
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
template<class CharT>
struct my_traits : std::char_traits<CharT>
{
};
template<class CharT>
struct my_allocator : std::allocator<CharT>
{
typedef std::allocator<CharT> base_t;
my_allocator(){}
template <class U> my_allocator(const my_allocator<U>& v) : base_t(v) {}
template <class U> struct rebind { typedef my_allocator<U> other; };
};
using namespace boost;
void test_conversion_to_char();
void test_conversion_to_int();
void test_conversion_to_double();
void test_conversion_to_bool();
void test_conversion_with_nonconst_char();
void test_conversion_to_string();
void test_conversion_from_to_wchar_t_alias();
void test_conversion_from_wchar_t();
void test_conversion_to_wchar_t();
void test_conversion_from_wstring();
void test_conversion_to_wstring();
void test_bad_lexical_cast();
void test_no_whitespace_stripping();
void test_volatile_types_conversions();
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
void test_traits();
void test_wtraits();
void test_allocator();
void test_wallocator();
#endif
void test_char_types_conversions();
void operators_overload_test();
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
void test_char16_conversions();
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
void test_char32_conversions();
#endif
void test_getting_pointer_to_function();
unit_test::test_suite *init_unit_test_suite(int, char *[])
{
unit_test::test_suite *suite =
BOOST_TEST_SUITE("lexical_cast unit test");
suite->add(BOOST_TEST_CASE(test_conversion_to_char));
suite->add(BOOST_TEST_CASE(test_conversion_to_int));
suite->add(BOOST_TEST_CASE(test_conversion_to_double));
suite->add(BOOST_TEST_CASE(test_conversion_to_bool));
suite->add(BOOST_TEST_CASE(test_conversion_from_to_wchar_t_alias));
suite->add(BOOST_TEST_CASE(test_conversion_to_string));
suite->add(BOOST_TEST_CASE(test_conversion_with_nonconst_char));
#ifndef BOOST_LCAST_NO_WCHAR_T
suite->add(BOOST_TEST_CASE(test_conversion_from_wchar_t));
suite->add(BOOST_TEST_CASE(test_conversion_to_wchar_t));
suite->add(BOOST_TEST_CASE(test_conversion_from_wstring));
suite->add(BOOST_TEST_CASE(test_conversion_to_wstring));
#endif
suite->add(BOOST_TEST_CASE(test_bad_lexical_cast));
suite->add(BOOST_TEST_CASE(test_no_whitespace_stripping));
suite->add(BOOST_TEST_CASE(test_volatile_types_conversions));
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
suite->add(BOOST_TEST_CASE(&test_traits));
suite->add(BOOST_TEST_CASE(&test_wtraits));
suite->add(BOOST_TEST_CASE(&test_allocator));
suite->add(BOOST_TEST_CASE(&test_wallocator));
#endif
suite->add(BOOST_TEST_CASE(&test_char_types_conversions));
suite->add(BOOST_TEST_CASE(&operators_overload_test));
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
suite->add(BOOST_TEST_CASE(&test_char16_conversions));
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
suite->add(BOOST_TEST_CASE(&test_char32_conversions));
#endif
suite->add(BOOST_TEST_CASE(&test_getting_pointer_to_function));
return suite;
}
void test_conversion_to_char()
{
BOOST_CHECK_EQUAL('A', lexical_cast<char>('A'));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(' '));
BOOST_CHECK_EQUAL('1', lexical_cast<char>(1));
BOOST_CHECK_EQUAL('0', lexical_cast<char>(0));
BOOST_CHECK_THROW(lexical_cast<char>(123), bad_lexical_cast);
BOOST_CHECK_EQUAL('1', lexical_cast<char>(1.0));
BOOST_CHECK_EQUAL('1', lexical_cast<char>(true));
BOOST_CHECK_EQUAL('0', lexical_cast<char>(false));
BOOST_CHECK_EQUAL('A', lexical_cast<char>("A"));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(" "));
BOOST_CHECK_THROW(lexical_cast<char>(""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<char>("Test"), bad_lexical_cast);
BOOST_CHECK_EQUAL('A', lexical_cast<char>(std::string("A")));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(std::string(" ")));
BOOST_CHECK_THROW(
lexical_cast<char>(std::string("")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<char>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_to_int()
{
BOOST_CHECK_EQUAL(1, lexical_cast<int>('1'));
BOOST_CHECK_EQUAL(0, lexical_cast<int>('0'));
BOOST_CHECK_THROW(lexical_cast<int>('A'), bad_lexical_cast);
BOOST_CHECK_EQUAL(1, lexical_cast<int>(1));
BOOST_CHECK_EQUAL(1, lexical_cast<int>(1.0));
BOOST_CHECK_EQUAL(
(std::numeric_limits<int>::max)(),
lexical_cast<int>((std::numeric_limits<int>::max)()));
BOOST_CHECK_EQUAL(
(std::numeric_limits<int>::min)(),
lexical_cast<int>((std::numeric_limits<int>::min)()));
BOOST_CHECK_THROW(lexical_cast<int>(1.23), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(1e20), bad_lexical_cast);
BOOST_CHECK_EQUAL(1, lexical_cast<int>(true));
BOOST_CHECK_EQUAL(0, lexical_cast<int>(false));
BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
BOOST_CHECK_THROW(
lexical_cast<int>(" 123"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>("Test"), bad_lexical_cast);
BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
BOOST_CHECK_EQUAL(123, lexical_cast<int>(std::string("123")));
BOOST_CHECK_THROW(
lexical_cast<int>(std::string(" 123")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::string("")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_with_nonconst_char()
{
std::vector<char> buffer;
buffer.push_back('1');
buffer.push_back('\0');
BOOST_CHECK_EQUAL(boost::lexical_cast<int>(&buffer[0]), 1);
std::vector<unsigned char> buffer2;
buffer2.push_back('1');
buffer2.push_back('\0');
BOOST_CHECK_EQUAL(boost::lexical_cast<int>(&buffer2[0]), 1);
std::vector<unsigned char> buffer3;
buffer3.push_back('1');
buffer3.push_back('\0');
BOOST_CHECK_EQUAL(boost::lexical_cast<int>(&buffer3[0]), 1);
#ifndef BOOST_LCAST_NO_WCHAR_T
std::vector<wchar_t> buffer4;
buffer4.push_back(L'1');
buffer4.push_back(L'\0');
BOOST_CHECK_EQUAL(boost::lexical_cast<int>(&buffer4[0]), 1);
#endif
}
void test_conversion_to_double()
{
BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<double>('1'), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_THROW(lexical_cast<double>('A'), bad_lexical_cast);
BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<double>(1), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_CLOSE_FRACTION(1.23, lexical_cast<double>(1.23), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_CLOSE_FRACTION(1.234567890, lexical_cast<double>(1.234567890), std::numeric_limits<double>::epsilon());
BOOST_CHECK_CLOSE_FRACTION(1.234567890, lexical_cast<double>("1.234567890"), std::numeric_limits<double>::epsilon());
BOOST_CHECK_CLOSE_FRACTION(1.0, lexical_cast<double>(true), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_CLOSE_FRACTION(0.0, lexical_cast<double>(false), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_CLOSE_FRACTION(1.23, lexical_cast<double>("1.23"), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_THROW(lexical_cast<double>(""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<double>("Test"), bad_lexical_cast);
BOOST_CHECK_CLOSE_FRACTION(1.23, lexical_cast<double>(std::string("1.23")), (std::numeric_limits<double>::epsilon()));
BOOST_CHECK_THROW(
lexical_cast<double>(std::string("")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<double>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_to_bool()
{
BOOST_CHECK_EQUAL(true, lexical_cast<bool>('1'));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>('0'));
BOOST_CHECK_THROW(lexical_cast<bool>('A'), bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0));
BOOST_CHECK_THROW(lexical_cast<bool>(123), bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1.0));
BOOST_CHECK_THROW(lexical_cast<bool>(-123), bad_lexical_cast);
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0.0));
BOOST_CHECK_THROW(lexical_cast<bool>(1234), bad_lexical_cast);
#if !defined(_CRAYC)
// Looks like a bug in CRAY compiler (throws bad_lexical_cast)
// TODO: localize the bug and report it to developers.
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(true));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(false));
#endif
BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
BOOST_CHECK_THROW(lexical_cast<bool>(""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("Test"), bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::string("1")));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::string("0")));
BOOST_CHECK_THROW(lexical_cast<bool>(1.0001L), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(2), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(2u), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(-1), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(-2), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<bool>(std::string("")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<bool>(std::string("Test")), bad_lexical_cast);
BOOST_CHECK(lexical_cast<bool>("+1") == true);
BOOST_CHECK(lexical_cast<bool>("+0") == false);
BOOST_CHECK(lexical_cast<bool>("-0") == false);
BOOST_CHECK_THROW(lexical_cast<bool>("--0"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-+-0"), bad_lexical_cast);
BOOST_CHECK(lexical_cast<bool>("0") == false);
BOOST_CHECK(lexical_cast<bool>("1") == true);
BOOST_CHECK(lexical_cast<bool>("00") == false);
BOOST_CHECK(lexical_cast<bool>("00000000000") == false);
BOOST_CHECK(lexical_cast<bool>("000000000001") == true);
BOOST_CHECK(lexical_cast<bool>("+00") == false );
BOOST_CHECK(lexical_cast<bool>("-00") == false );
BOOST_CHECK(lexical_cast<bool>("+00000000001") == true );
BOOST_CHECK_THROW(lexical_cast<bool>("020"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("00200"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-00200"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("+00200"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("000000000002"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-1"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-0000000001"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("00000000011"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("001001"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-00000000010"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("-000000000100"), bad_lexical_cast);
}
void test_conversion_to_string()
{
char buf[] = "hello";
char* str = buf;
BOOST_CHECK_EQUAL(str, lexical_cast<std::string>(str));
BOOST_CHECK_EQUAL("A", lexical_cast<std::string>('A'));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(' '));
BOOST_CHECK_EQUAL("123", lexical_cast<std::string>(123));
BOOST_CHECK_EQUAL("1.23", lexical_cast<std::string>(1.23));
BOOST_CHECK_EQUAL("1.111111111", lexical_cast<std::string>(1.111111111));
BOOST_CHECK_EQUAL("1", lexical_cast<std::string>(true));
BOOST_CHECK_EQUAL("0", lexical_cast<std::string>(false));
BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>("Test"));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(" "));
BOOST_CHECK_EQUAL("", lexical_cast<std::string>(""));
BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>(std::string("Test")));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(std::string(" ")));
BOOST_CHECK_EQUAL("", lexical_cast<std::string>(std::string("")));
}
void test_conversion_from_to_wchar_t_alias()
{
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned short>("123"));
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned int>("123"));
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned long>("123"));
BOOST_CHECK_EQUAL(std::string("123"),
lexical_cast<std::string>(static_cast<unsigned short>(123)));
BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123u));
BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123ul));
}
void test_conversion_from_wchar_t()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_CHECK_EQUAL(1, lexical_cast<int>(L'1'));
BOOST_CHECK_THROW(lexical_cast<int>(L'A'), bad_lexical_cast);
#endif
BOOST_CHECK_EQUAL(123, lexical_cast<int>(L"123"));
BOOST_CHECK_THROW(lexical_cast<int>(L""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(L"Test"), bad_lexical_cast);
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_CHECK_EQUAL(1.0, lexical_cast<double>(L'1'));
BOOST_CHECK_THROW(lexical_cast<double>(L'A'), bad_lexical_cast);
#endif
BOOST_CHECK_EQUAL(1.23, lexical_cast<double>(L"1.23"));
BOOST_CHECK_THROW(lexical_cast<double>(L""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<double>(L"Test"), bad_lexical_cast);
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L'1'));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L'0'));
BOOST_CHECK_THROW(lexical_cast<bool>(L'A'), bad_lexical_cast);
#endif
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L"1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L"0"));
BOOST_CHECK_THROW(lexical_cast<bool>(L""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(L"Test"), bad_lexical_cast);
#endif
}
void test_conversion_to_wchar_t()
{
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0));
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>('1'));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>('0'));
BOOST_CHECK_THROW(lexical_cast<wchar_t>(123), bad_lexical_cast);
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1.0));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0.0));
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(true));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(false));
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L'A'));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L' '));
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L"A"));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L" "));
BOOST_CHECK_THROW(lexical_cast<wchar_t>(L""), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<wchar_t>(L"Test"), bad_lexical_cast);
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(std::wstring(L"A")));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(std::wstring(L" ")));
BOOST_CHECK_THROW(
lexical_cast<wchar_t>(std::wstring(L"")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<wchar_t>(std::wstring(L"Test")), bad_lexical_cast);
#endif
BOOST_CHECK(true);
}
void test_conversion_from_wstring()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
BOOST_CHECK_EQUAL(123, lexical_cast<int>(std::wstring(L"123")));
BOOST_CHECK_THROW(
lexical_cast<int>(std::wstring(L"")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::wstring(L"Test")), bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::wstring(L"1")));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::wstring(L"0")));
BOOST_CHECK_THROW(
lexical_cast<bool>(std::wstring(L"")), bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<bool>(std::wstring(L"Test")), bad_lexical_cast);
#endif
BOOST_CHECK(true);
}
void test_conversion_to_wstring()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
wchar_t buf[] = L"hello";
wchar_t* str = buf;
BOOST_CHECK(str == lexical_cast<std::wstring>(str));
BOOST_CHECK(L"123" == lexical_cast<std::wstring>(123));
BOOST_CHECK(L"1.23" == lexical_cast<std::wstring>(1.23));
BOOST_CHECK(L"1" == lexical_cast<std::wstring>(true));
BOOST_CHECK(L"0" == lexical_cast<std::wstring>(false));
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_CHECK(L"A" == lexical_cast<std::wstring>(L'A'));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(L' '));
BOOST_CHECK(L"A" == lexical_cast<std::wstring>('A'));
#endif
BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(L"Test"));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(L" "));
BOOST_CHECK(L"" == lexical_cast<std::wstring>(L""));
BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(std::wstring(L"Test")));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(std::wstring(L" ")));
BOOST_CHECK(L"" == lexical_cast<std::wstring>(std::wstring(L"")));
#endif
BOOST_CHECK(true);
}
void test_bad_lexical_cast()
{
try
{
lexical_cast<int>(std::string("Test"));
BOOST_CHECK(false); // Exception expected
}
catch(const bad_lexical_cast &e)
{
BOOST_CHECK(e.source_type() == typeid(std::string));
BOOST_CHECK(e.target_type() == typeid(int));
}
}
void test_no_whitespace_stripping()
{
BOOST_CHECK_THROW(lexical_cast<int>(" 123"), bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>("123 "), bad_lexical_cast);
}
void test_volatile_types_conversions()
{
volatile int i1 = 100000;
BOOST_CHECK_EQUAL("100000", boost::lexical_cast<std::string>(i1));
volatile const int i2 = 100000;
BOOST_CHECK_EQUAL("100000", boost::lexical_cast<std::string>(i2));
volatile const long int i3 = 1000000;
BOOST_CHECK_EQUAL("1000000", boost::lexical_cast<std::string>(i3));
}
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
void test_traits()
{
typedef std::basic_string<char, my_traits<char> > my_string;
my_string const s("s");
BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(-1) == "-1");
}
void test_wtraits()
{
typedef std::basic_string<wchar_t, my_traits<wchar_t> > my_string;
my_string const s(L"s");
BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
//BOOST_CHECK(boost::lexical_cast<my_string>(-1) == L"-1");
// Commented out because gcc 3.3 doesn't support this:
// basic_ostream<wchar_t, my_traits<wchar_t> > o; o << -1;
}
void test_allocator()
{
// Following test cause compilation error on MSVC2012:
// (Reason: cannot convert from 'std::_Wrap_alloc<_Alloc>' to 'const my_allocator<CharT>')
//
// MSVC developer is notified about this issue
#if !defined(_MSC_VER) || (_MSC_VER < 1700)
typedef std::basic_string< char
, std::char_traits<char>
, my_allocator<char>
> my_string;
my_string s("s");
BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<std::string>(s) == "s");
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(1) == "1");
BOOST_CHECK(boost::lexical_cast<my_string>("s") == s);
BOOST_CHECK(boost::lexical_cast<my_string>(std::string("s")) == s);
#endif
}
void test_wallocator()
{
// Following test cause compilation error on MSVC2012:
// (Reason: cannot convert from 'std::_Wrap_alloc<_Alloc>' to 'const my_allocator<CharT>')
//
// MSVC developer is notified about this issue
#if !defined(_MSC_VER) || (_MSC_VER < 1700)
typedef std::basic_string< wchar_t
, std::char_traits<wchar_t>
, my_allocator<wchar_t>
> my_string;
my_string s(L"s");
BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<std::wstring>(s) == L"s");
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(1) == L"1");
BOOST_CHECK(boost::lexical_cast<my_string>(L"s") == s);
BOOST_CHECK(boost::lexical_cast<my_string>(std::wstring(L"s")) == s);
#endif
}
#endif
void test_char_types_conversions()
{
const char c_arr[] = "Test array of chars";
const unsigned char uc_arr[] = "Test array of chars";
const signed char sc_arr[] = "Test array of chars";
BOOST_CHECK(boost::lexical_cast<std::string>(c_arr) == std::string(c_arr));
BOOST_CHECK(boost::lexical_cast<std::string>(uc_arr) == std::string(c_arr));
BOOST_CHECK(boost::lexical_cast<std::string>(sc_arr) == std::string(c_arr));
BOOST_CHECK(boost::lexical_cast<char>(c_arr[0]) == c_arr[0]);
BOOST_CHECK(boost::lexical_cast<char>(uc_arr[0]) == c_arr[0]);
BOOST_CHECK(boost::lexical_cast<char>(sc_arr[0]) == c_arr[0]);
BOOST_CHECK(boost::lexical_cast<unsigned char>(c_arr[0]) == uc_arr[0]);
BOOST_CHECK(boost::lexical_cast<unsigned char>(uc_arr[0]) == uc_arr[0]);
BOOST_CHECK(boost::lexical_cast<unsigned char>(sc_arr[0]) == uc_arr[0]);
BOOST_CHECK(boost::lexical_cast<signed char>(c_arr[0]) == sc_arr[0]);
BOOST_CHECK(boost::lexical_cast<signed char>(uc_arr[0]) == sc_arr[0]);
BOOST_CHECK(boost::lexical_cast<signed char>(sc_arr[0]) == sc_arr[0]);
#ifndef BOOST_LCAST_NO_WCHAR_T
const wchar_t wc_arr[]=L"Test array of chars";
BOOST_CHECK(boost::lexical_cast<std::wstring>(wc_arr) == std::wstring(wc_arr));
BOOST_CHECK(boost::lexical_cast<wchar_t>(wc_arr[0]) == wc_arr[0]);
#endif
}
struct foo_operators_test
{
foo_operators_test() : f(2) {}
int f;
};
template <typename OStream>
OStream& operator<<(OStream& ostr, const foo_operators_test& foo)
{
ostr << foo.f;
return ostr;
}
template <typename IStream>
IStream& operator>>(IStream& istr, foo_operators_test& foo)
{
istr >> foo.f;
return istr;
}
void operators_overload_test()
{
foo_operators_test foo;
BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(foo), "2");
BOOST_CHECK_EQUAL((boost::lexical_cast<foo_operators_test>("2")).f, 2);
// Must compile
(void)boost::lexical_cast<foo_operators_test>(foo);
}
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
void test_char16_conversions()
{
BOOST_CHECK(u"100" == lexical_cast<std::u16string>(u"100"));
BOOST_CHECK(u"1" == lexical_cast<std::u16string>(u'1'));
}
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
void test_char32_conversions()
{
BOOST_CHECK(U"100" == lexical_cast<std::u32string>(U"100"));
BOOST_CHECK(U"1" == lexical_cast<std::u32string>(U'1'));
}
#endif
void test_getting_pointer_to_function()
{
// Just checking that &lexical_cast<To, From> is not ambiguous
typedef char char_arr[4];
typedef int(*f1)(const char_arr&);
f1 p1 = &boost::lexical_cast<int, char_arr>;
BOOST_CHECK(p1);
typedef int(*f2)(const std::string&);
f2 p2 = &boost::lexical_cast<int, std::string>;
BOOST_CHECK(p2);
typedef std::string(*f3)(const int&);
f3 p3 = &boost::lexical_cast<std::string, int>;
BOOST_CHECK(p3);
std::vector<int> values;
std::vector<std::string> ret;
std::transform(values.begin(), values.end(), ret.begin(), boost::lexical_cast<std::string, int>);
}
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