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cdfc5bee5187c0f68ceae3832f17446d6a0165aa
convert/test/test_convert.cpp
Vladimir Batov cdfc5bee51 replacing struct convert
2014-05-20 22:39:33 +10:00

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// Boost.Convert library test and usage example
// Copyright (c) 2009-2014 Vladimir Batov.
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
#include "./test.hpp"
#if !defined(_MSC_VER)
#include "./sfinae.cpp"
#include "./algorithms.cpp"
#include "./performance.cpp"
#include "./encryption.cpp"
#include "./callable.cpp"
#endif
using std::string;
using std::wstring;
template<typename Converter>
void
test::type_to_string(Converter const& cnv)
{
BOOST_TEST("255" == boost::cnv<std::string>(255, cnv(arg::base = cnv::base::dec)).value_or("bad"));
BOOST_TEST( "ff" == boost::cnv<std::string>(255, cnv(arg::base = cnv::base::hex)).value_or("bad"));
BOOST_TEST("377" == boost::cnv<std::string>(255, cnv(arg::base = cnv::base::oct)).value_or("bad"));
}
template<typename Converter>
void
test::string_to_type(Converter const& cnv)
{
BOOST_TEST( 255 == boost::cnv<int>("255", cnv(arg::base = cnv::base::dec)).value_or(999));
BOOST_TEST( 999 == boost::cnv<int>( "FF", cnv(arg::base = cnv::base::dec)).value_or(999));
BOOST_TEST( 255 == boost::cnv<int>( "FF", cnv(arg::base = cnv::base::hex)).value_or(999));
BOOST_TEST( 173 == boost::cnv<int>("255", cnv(arg::base = cnv::base::oct)).value_or(999));
BOOST_TEST( 999 != boost::cnv<double>("1.23", cnv).value_or(999));
}
int
main(int argc, char const* argv[])
{
test::sfinae();
test::string_to_type(boost::strtol_converter());
test::string_to_type(boost::printf_converter());
test::type_to_string(boost::printf_converter());
test::algorithms();
test::performance();
test::encryption();
test::callables();
string const not_int_str = "not an int";
string const std_str = "-11";
char const* const c_str = "-12";
wstring const wstd_str = L"-13";
wchar_t const* const wc_str = L"-14";
char const array_str[] = "-15";
char const* const container_str = "-16";
std::vector<char> const vector_str (container_str, container_str + strlen(container_str));
std::list<char> const list_str (container_str, container_str + strlen(container_str));
boost::lexical_cast_converter lcnv; // lexical_cast-based converter
boost::cstringstream_converter ccnv; // stringstream-based char converter
boost::wstringstream_converter wcnv; // stringstream-based wchar_t converter
////////////////////////////////////////////////////////////////////////////
// Testing lexical_cast-based converter.
////////////////////////////////////////////////////////////////////////////
int lc00 = boost::cnv<int>(not_int_str, lcnv).value_or(-1);
int lc01 = boost::cnv<int>(std_str, lcnv).value_or(-1);
int lc02 = boost::cnv<int>(c_str, lcnv).value_or(-1);
BOOST_TEST(lc00 == -1); // Failed conversion. No throw
BOOST_TEST(lc01 == -11);
BOOST_TEST(lc02 == -12);
////////////////////////////////////////////////////////////////////////////
// Testing various kinds of string containers.
// Testing implicit conversion directly to TypeOut (int).
// Testing with the fallback value value provided.
// On failure returns the provided fallback value and DOES NOT THROW.
////////////////////////////////////////////////////////////////////////////
int a000 = boost::cnv<int>(not_int_str, ccnv).value_or(-1);
int a001 = boost::cnv<int>(std_str, ccnv).value_or(-1);
int a002 = boost::cnv<int>(c_str, ccnv).value_or(-1);
int a003 = boost::cnv<int>(wstd_str, wcnv).value_or(-1);
int a004 = boost::cnv<int>(wc_str, wcnv).value_or(-1);
int a005 = boost::cnv<int>(array_str, ccnv).value_or(-1);
BOOST_TEST(a000 == -1); // Failed conversion
BOOST_TEST(a001 == -11);
BOOST_TEST(a002 == -12);
BOOST_TEST(a003 == -13);
BOOST_TEST(a004 == -14);
BOOST_TEST(a005 == -15);
////////////////////////////////////////////////////////////////////////////
// Testing with the fallback value value provided.
// Testing implicit conversion to conversion::result<TypeOut>.
// conversion::result<> exhibits the SAME behavior, i.e.
// on failure it returns the provided fallback value and DOES NOT THROW.
////////////////////////////////////////////////////////////////////////////
boost::conversion::result<int> r000 = boost::cnv<int>(not_int_str, ccnv);
boost::conversion::result<int> r001 = boost::cnv<int>(std_str, ccnv);
boost::conversion::result<int> r002 = boost::cnv<int>(c_str, ccnv);
boost::conversion::result<int> r003 = boost::cnv<int>(wstd_str, wcnv);
boost::conversion::result<int> r004 = boost::cnv<int>(wc_str, wcnv);
boost::conversion::result<int> r005 = boost::cnv<int>(array_str, ccnv);
BOOST_TEST(!r000); // Failed conversion
BOOST_TEST( r001 && r001.value() == -11);
BOOST_TEST( r002 && r002.value() == -12);
BOOST_TEST( r003 && r003.value() == -13);
BOOST_TEST( r004 && r004.value() == -14);
BOOST_TEST( r005 && r005.value() == -15);
////////////////////////////////////////////////////////////////////////////
// Testing without a fallback value provided.
// On failure it throws as there is nothing to return.
// Requires TypeOut to be DefaultConstructible.
////////////////////////////////////////////////////////////////////////////
try
{
boost::cnv<int>(not_int_str, ccnv).value();
BOOST_TEST(!"failed to throw");
}
catch (std::exception&)
{
// Expected behavior: received 'boost::convert failed' exception. All well.
}
int a021 = boost::cnv<int>(std_str, ccnv).value();
int a022 = boost::cnv<int>(c_str, ccnv).value();
int a023 = boost::cnv<int>(wstd_str, wcnv).value();
int a024 = boost::cnv<int>(wc_str, wcnv).value();
int a025 = boost::cnv<int>(array_str, ccnv).value();
BOOST_TEST(a021 == -11);
BOOST_TEST(a022 == -12);
BOOST_TEST(a023 == -13);
BOOST_TEST(a024 == -14);
BOOST_TEST(a025 == -15);
////////////////////////////////////////////////////////////////////////////
// Testing conversion::result<> interface.
// conversion::result exhibits the SAME (but delayed) behavior, i.e.
// for failed conversion it throws on an attempt to retrieve the value
// as there is nothing to return.
////////////////////////////////////////////////////////////////////////////
boost::conversion::result<int> r010 = boost::cnv<int>(not_int_str, ccnv);
boost::conversion::result<int> r011 = boost::cnv<int>(std_str, ccnv);
boost::conversion::result<int> r012 = boost::cnv<int>(c_str, ccnv);
boost::conversion::result<int> r013 = boost::cnv<int>(wstd_str, wcnv);
boost::conversion::result<int> r014 = boost::cnv<int>(wc_str, wcnv);
boost::conversion::result<int> r015 = boost::cnv<int>(array_str, ccnv);
BOOST_TEST(!r010); // Failed conversion
BOOST_TEST( r011 && r011.value() == -11);
BOOST_TEST( r012 && r012.value() == -12);
BOOST_TEST( r013 && r013.value() == -13);
BOOST_TEST( r014 && r014.value() == -14);
BOOST_TEST( r015 && r015.value() == -15);
try
{
r010.value(); // Throws on an attempt to retrieve the value.
BOOST_TEST(!"failed to throw");
}
catch (std::exception&)
{
// Expected behavior: received 'boost::convert failed' exception. All well.
}
////////////////////////////////////////////////////////////////////////////
// Testing int-to-string conversion with various string
// containers as the fallback values.
////////////////////////////////////////////////////////////////////////////
string s001 = boost::cnv< string>(-5, ccnv).value_or(std_str);
string s002 = boost::cnv< string>(-5, ccnv).value_or(c_str);
wstring s003 = boost::cnv<wstring>(-5, wcnv).value_or(wstd_str);
wstring s004 = boost::cnv<wstring>(-5, wcnv).value_or(wc_str);
string s005 = boost::cnv< string>(-5, ccnv).value_or(array_str);
boost::conversion::result< string> rs001 = boost::cnv< string>(-5, ccnv);
boost::conversion::result< string> rs002 = boost::cnv< string>(-5, ccnv);
boost::conversion::result<wstring> rs003 = boost::cnv<wstring>(-5, wcnv);
boost::conversion::result<wstring> rs004 = boost::cnv<wstring>(-5, wcnv);
boost::conversion::result< string> rs005 = boost::cnv< string>(-5, ccnv);
BOOST_TEST(s001 == "-5"); BOOST_TEST(rs001 && rs001.value() == "-5");
BOOST_TEST(s002 == "-5"); BOOST_TEST(rs002 && rs002.value() == "-5");
BOOST_TEST(s003 == L"-5"); BOOST_TEST(rs003 && rs003.value() == L"-5");
BOOST_TEST(s004 == L"-5"); BOOST_TEST(rs004 && rs004.value() == L"-5");
BOOST_TEST(s005 == "-5"); BOOST_TEST(rs005 && rs005.value() == "-5");
////////////////////////////////////////////////////////////////////////////
// Testing int-to-string conversion with no fallback value.
////////////////////////////////////////////////////////////////////////////
string s010 = boost::cnv< string>(-5, ccnv).value();
wstring s011 = boost::cnv<wstring>(-5, wcnv).value();
boost::conversion::result< string> rs010 = boost::cnv< string>(-5, ccnv);
boost::conversion::result<wstring> rs011 = boost::cnv<wstring>(-5, wcnv);
BOOST_TEST( s010 == "-5");
BOOST_TEST( s011 == L"-5");
BOOST_TEST(rs010 && rs010.value() == "-5");
BOOST_TEST(rs011 && rs011.value() == L"-5");
////////////////////////////////////////////////////////////////////////////
// Testing conversions of a user-defined type
////////////////////////////////////////////////////////////////////////////
direction const up_dir1 = direction::up;
direction const dn_dir1 = direction::dn;
string up_dir0_str = boost::cnv<string>(direction::up, ccnv).value();
string dn_dir0_str = boost::cnv<string>(direction::dn, ccnv).value();
string up_dir1_str = boost::cnv<string>(up_dir1, ccnv).value();
string dn_dir1_str = boost::cnv<string>(dn_dir1, ccnv).value();
direction up_dir2 = boost::cnv<direction>(up_dir1_str, ccnv).value();
direction dn_dir2 = boost::cnv<direction>(dn_dir1_str, ccnv).value();
direction up_dir3 = boost::cnv<direction>(up_dir1_str, ccnv).value();
direction dn_dir3 = boost::cnv<direction>(dn_dir1_str, ccnv).value();
direction dn_dir4 = boost::cnv<direction>("junk", ccnv).value_or(direction::dn);
boost::conversion::result<direction> up_dir4 = boost::cnv<direction>("junk", ccnv);
BOOST_TEST(up_dir0_str == "up");
BOOST_TEST(dn_dir0_str == "dn");
BOOST_TEST(up_dir1_str == "up");
BOOST_TEST(dn_dir1_str == "dn");
BOOST_TEST(up_dir2 == up_dir1);
BOOST_TEST(dn_dir2 == dn_dir1);
BOOST_TEST(up_dir3 == direction::up);
BOOST_TEST(dn_dir3 == direction::dn);
BOOST_TEST(dn_dir4 == direction::dn);
BOOST_TEST(!up_dir4); // Failed conversion
////////////////////////////////////////////////////////////////////////////
// Testing formatters/manipulators
////////////////////////////////////////////////////////////////////////////
try
{
boost::lexical_cast<int>("FF");
BOOST_TEST(!"We should not be here");
}
catch (...)
{
}
int hex_v01 = boost::cnv<int>("FF", ccnv(std::hex)).value_or(0);
int hex_v02 = boost::cnv<int>(L"F", wcnv(std::hex)).value_or(0);
int hex_v03 = boost::cnv<int>("FF", ccnv(std::dec)).value_or(-5);
int hex_v04 = boost::cnv<int>(L"F", wcnv(std::dec)).value_or(-5);
BOOST_TEST(hex_v01 == 255); // "FF"
BOOST_TEST(hex_v02 == 15); // L"F"
BOOST_TEST(hex_v03 == -5);
BOOST_TEST(hex_v04 == -5);
ccnv(std::showbase)(std::uppercase)(std::hex);
BOOST_TEST(boost::cnv<string>(255, ccnv).value() == "0XFF");
BOOST_TEST(boost::cnv<string>( 15, ccnv).value() == "0XF");
char const* double_s01 = test::is_msc ? "1.2345E-002"
: test::is_gcc ? "1.2345E-02"
: "";
// ccnv(std::setprecision(4))(std::uppercase)(std::scientific);
ccnv(arg::precision = 4)
(arg::uppercase = true)
(arg::notation = cnv::notation::scientific);
double double_v01 = boost::cnv<double>(double_s01, ccnv).value();
string double_s02 = boost::cnv<string>(double_v01, ccnv).value();
BOOST_TEST(double_s01 == double_s02);
////////////////////////////////////////////////////////////////////////////
// Testing locale
////////////////////////////////////////////////////////////////////////////
char const* eng_locale_name = test::is_msc ? "" // I do not know MCS presentation of US locale
: test::is_gcc ? "en_US.UTF-8"
: "";
char const* rus_locale_name = test::is_msc ? "Russian_Russia.1251"
: test::is_gcc ? "ru_RU.UTF-8"
: "";
char const* rus_expected = test::is_msc ? "1,235e-002" : test::is_gcc ? "1,235e-02" : "";
char const* eng_expected = test::is_msc ? "1.235e-002" : test::is_gcc ? "1.235e-02" : "";
std::locale rus_locale;
std::locale eng_locale;
try { rus_locale = std::locale(rus_locale_name); }
catch (...) { printf("Test failed: bad locale %s.\n", rus_locale_name); exit(1); }
try { eng_locale = std::locale(eng_locale_name); }
catch (...) { printf("Test failed: bad locale %s.\n", eng_locale_name); exit(1); }
// ccnv(std::setprecision(3))(std::nouppercase);
ccnv(arg::precision = 3)(arg::uppercase = false);
string double_rus = boost::cnv<string>(double_v01, ccnv(rus_locale)).value();
string double_eng = boost::cnv<string>(double_v01, ccnv(eng_locale)).value();
printf("rus locale=%s, presentation=%s.\n", rus_locale.name().c_str(), double_rus.c_str());
printf("eng locale=%s, presentation=%s.\n", eng_locale.name().c_str(), double_eng.c_str());
BOOST_TEST(double_rus == rus_expected);
BOOST_TEST(double_eng == eng_expected);
////////////////////////////////////////////////////////////////////////////
// Testing string-to-bool and bool-to-string conversions
////////////////////////////////////////////////////////////////////////////
// boost::conversion::result<bool>t bool_res1 = boost::cnv<bool>("1", false, ccnv);
// boost::conversion::result<bool>t bool_res2 = boost::cnv<bool>("true", false, ccnv);
// boost::conversion::result<bool>t bool_res3 = boost::cnv<bool>("yes", false, ccnv);
// boost::conversion::result<bool>t bool_res4 = boost::cnv<bool>(L"1", false, wcnv);
// boost::conversion::result<bool>t bool_res5 = boost::cnv<bool>(L"true", false, wcnv);
// boost::conversion::result<bool>t bool_res6 = boost::cnv<bool>(L"yes", false, wcnv);
// boost::conversion::result<bool>t bool_res7 = boost::cnv<bool>("junk", true, ccnv);
//
// BOOST_TEST( bool_res1 && bool_res1.value() == true);
// BOOST_TEST( bool_res2 && bool_res2.value() == true);
// BOOST_TEST( bool_res3 && bool_res3.value() == true);
// BOOST_TEST( bool_res4 && bool_res4.value() == true);
// BOOST_TEST( bool_res5 && bool_res5.value() == true);
// BOOST_TEST( bool_res6 && bool_res6.value() == true);
// BOOST_TEST(!bool_res7 && bool_res7.value() == true);
//
// string bool_str1 = boost::cnv<string>(true, ccnv).value_or("failed");
// string bool_str2 = boost::cnv<string>(false, ccnv).value_or("failed");
// string bool_str3 = boost::cnv<string>(1, ccnv).value_or("failed");
// string bool_str4 = boost::cnv<string>(0, ccnv).value_or("failed");
//
// BOOST_TEST(bool_str1 == "1");
// BOOST_TEST(bool_str2 == "0");
// BOOST_TEST(bool_str3 == "1");
// BOOST_TEST(bool_str4 == "0");
return boost::report_errors();
}
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