/*=============================================================================
    Copyright (c) 2018-2023 Nikita Kniazev

    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)
=============================================================================*/
#include <boost/spirit/home/x3/support/utility/utf8.hpp>
#include <boost/core/lightweight_test.hpp>
#include <string>

static bool nowarn_constexpr(bool x) { return x; }

int main()
{
    using boost::spirit::x3::to_utf8;
    using namespace std::string_literals;

    BOOST_TEST_CSTR_EQ("\xED\x9F\xBF", to_utf8(0xD7FFul).c_str());
    BOOST_TEST_CSTR_EQ("\xEE\x80\x80", to_utf8(0xE000ul).c_str());

    if (nowarn_constexpr(sizeof(L"\u00FF") == 2))
        BOOST_TEST_CSTR_EQ("\xC3\xBF", to_utf8(L"\u00FF"[0]).c_str());
    BOOST_TEST_CSTR_EQ("\xC3\xBF", to_utf8(U'\u00FF').c_str());
    if (nowarn_constexpr(sizeof(L"\uFFE1") == 2))
        BOOST_TEST_CSTR_EQ("\xEF\xBF\xA1", to_utf8(L"\uFFE1"[0]).c_str());
    BOOST_TEST_CSTR_EQ("\xEF\xBF\xA1", to_utf8(U'\uFFE1').c_str());
    if (nowarn_constexpr(sizeof(L"\U0001F9D0") == 2))
        BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90", to_utf8(L"\U0001F9D0"[0]).c_str());
    BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90", to_utf8(U'\U0001F9D0').c_str());
    BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90\xF0\x9F\xA7\xA0", to_utf8(L"\U0001F9D0\U0001F9E0").c_str());
    BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90\xF0\x9F\xA7\xA0", to_utf8(U"\U0001F9D0\U0001F9E0").c_str());
    BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90\xF0\x9F\xA7\xA0", to_utf8(L"\U0001F9D0\U0001F9E0"s).c_str());
    BOOST_TEST_CSTR_EQ("\xF0\x9F\xA7\x90\xF0\x9F\xA7\xA0", to_utf8(U"\U0001F9D0\U0001F9E0"s).c_str());

    return boost::report_errors();
}