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// Copyright 2019 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
#if defined(_MSC_VER)
# pragma warning( disable: 4702 ) // unreachable code
#endif
#include <boost/variant2/variant.hpp>
#include <boost/core/lightweight_test.hpp>
#include <stdexcept>
using namespace boost::variant2;
struct X
{
static int instances;
X()
{
++instances;
}
X( X const& )
{
throw std::runtime_error( "X(X const&)" );
}
~X()
{
--instances;
}
};
int X::instances = 0;
void test_copy()
{
X::instances = 0;
{
variant<X> v1;
BOOST_TEST_EQ( X::instances, 1 );
try
{
variant<X, int, float> v2( v1 );
BOOST_TEST_EQ( X::instances, 2 );
}
catch( std::exception const& )
{
}
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
}
void test_move()
{
X::instances = 0;
{
variant<X> v1;
BOOST_TEST_EQ( X::instances, 1 );
try
{
variant<X, int, float> v2( std::move( v1 ) );
BOOST_TEST_EQ( X::instances, 2 );
}
catch( std::exception const& )
{
}
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
}
int main()
{
test_copy();
test_move();
return boost::report_errors();
}
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