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// Copyright 2022 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/config.hpp>
#if defined(BOOST_GCC) && BOOST_GCC < 50000
# define BOOST_ALLOW_DEPRECATED
#endif
#include <boost/variant2/variant.hpp>
#include <boost/json/value_from.hpp>
#include <boost/json/serialize.hpp>
#include <boost/core/lightweight_test.hpp>
#include <string>
using namespace boost::variant2;
namespace json = boost::json;
int main()
{
{
monostate m;
json::value w = json::value_from( m );
BOOST_TEST_EQ( w, json::value( nullptr ) );
}
{
variant<monostate, int, std::string> v;
json::value w = json::value_from( v );
BOOST_TEST_EQ( w, json::value( nullptr ) );
}
{
variant<monostate, int, std::string> v( 17 );
json::value w = json::value_from( v );
BOOST_TEST_EQ( w, json::value( 17 ) );
}
{
variant<monostate, int, std::string> v( "test" );
json::value w = json::value_from( v );
BOOST_TEST_EQ( w, json::value( "test" ) );
}
return boost::report_errors();
}
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