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// Copyright 2017 Peter Dimov.
//
// 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/variant2/variant.hpp>
#include <boost/core/lightweight_test.hpp>
#include <string>
using namespace boost::variant2;
int main()
{
{
variant<int> v;
BOOST_TEST( holds_alternative<int>( v ) );
}
{
variant<int, float> v;
BOOST_TEST( holds_alternative<int>( v ) );
BOOST_TEST( !holds_alternative<float>( v ) );
}
{
variant<int, float> v( 3.14f );
BOOST_TEST( !holds_alternative<int>( v ) );
BOOST_TEST( holds_alternative<float>( v ) );
}
{
variant<int, float, float> v;
BOOST_TEST( holds_alternative<int>( v ) );
}
{
variant<int, int, float> v( 3.14f );
BOOST_TEST( holds_alternative<float>( v ) );
}
{
variant<int, float, std::string> v;
BOOST_TEST( holds_alternative<int>( v ) );
BOOST_TEST( !holds_alternative<float>( v ) );
BOOST_TEST( !holds_alternative<std::string>( v ) );
}
{
variant<int, float, std::string> v( 3.14f );
BOOST_TEST( !holds_alternative<int>( v ) );
BOOST_TEST( holds_alternative<float>( v ) );
BOOST_TEST( !holds_alternative<std::string>( v ) );
}
{
variant<int, float, std::string> v( "text" );
BOOST_TEST( !holds_alternative<int>( v ) );
BOOST_TEST( !holds_alternative<float>( v ) );
BOOST_TEST( holds_alternative<std::string>( v ) );
}
{
variant<int, int, float, std::string> v( 3.14f );
BOOST_TEST( holds_alternative<float>( v ) );
BOOST_TEST( !holds_alternative<std::string>( v ) );
}
{
variant<int, int, float, std::string> v( "text" );
BOOST_TEST( !holds_alternative<float>( v ) );
BOOST_TEST( holds_alternative<std::string>( v ) );
}
return boost::report_errors();
}
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