Need support to wstring about decimal_for_cpp HOT 1 CLOSED

#include <codecvt>
#include <locale>
#include <string>

BOOST_AUTO_TEST_CASE(decimalToWString) {
    using namespace std;

    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;

    dec::decimal<4> expected(3.1415);
    std::wstring wide_value(L"3.1415");

    // decimal to wstring
    std::string utf8str = dec::toString(expected);
    std::wstring wide_from_dec = converter.from_bytes(utf8str);

    BOOST_CHECK_EQUAL(wide_value, wide_from_dec);
}

BOOST_AUTO_TEST_CASE(decimalFromWString) {
    using namespace std;

    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;

    dec::decimal<4> expected(3.1415);
    std::wstring wide_value(L"3.1415");

    // wstring to decimal
    std::string narrow = converter.to_bytes(wide_value);
    dec::decimal<4> decimal_from_wstring(narrow);

    BOOST_CHECK_EQUAL(expected, decimal_from_wstring);
}