boost/libs/leaf/test/accumulate_nested_error_exception_test.cpp
2021-10-05 21:37:46 +02:00

88 lines
1.6 KiB
C++

// Copyright (c) 2018-2021 Emil Dotchevski and Reverge Studios, Inc.
// 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/leaf/detail/config.hpp>
#ifdef BOOST_LEAF_NO_EXCEPTIONS
#include <iostream>
int main()
{
std::cout << "Unit test not applicable." << std::endl;
return 0;
}
#else
#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
# include "leaf.hpp"
#else
# include <boost/leaf/on_error.hpp>
# include <boost/leaf/handle_errors.hpp>
# include <boost/leaf/exception.hpp>
#endif
#include "lightweight_test.hpp"
namespace leaf = boost::leaf;
template <int>
struct info
{
int value;
};
void f0()
{
auto load = leaf::on_error( []( info<0> & ) { } );
throw leaf::exception(info<2>{2});
}
void f1()
{
auto load = leaf::on_error( info<0>{-1}, info<2>{-1}, []( info<1> & x ) {++x.value;} );
f0();
}
void f2()
{
try
{
f1();
}
catch( leaf::error_id const & err )
{
err.load( info<3>{3} );
throw;
}
}
int main()
{
int r = leaf::try_catch(
[]
{
f2();
return 0;
},
[]( info<0> i0, info<1> i1, info<2> i2, info<3> i3 )
{
BOOST_TEST_EQ(i0.value, 0);
BOOST_TEST_EQ(i1.value, 1);
BOOST_TEST_EQ(i2.value, 2);
BOOST_TEST_EQ(i3.value, 3);
return 1;
},
[]
{
return 2;
} );
BOOST_TEST_EQ(r, 1);
return boost::report_errors();
}
#endif