leaf/test/multiple_errors_test.cpp

// Copyright (c) 2018 Emil Dotchevski
// Copyright (c) 2018 Second Spectrum, 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/static_store.hpp>
#include "boost/core/lightweight_test.hpp"

namespace leaf = boost::leaf;

template <int A>
struct info
{
	int value;
};

leaf::error_id f12()
{
	return leaf::new_error( info<1>{1}, info<2>{2} );
}

leaf::error_id f34()
{
	return leaf::new_error( info<3>{3}, info<4>{4} );
}

int main()
{
	leaf::static_store<info<1>,info<2>,info<3>,info<4>> exp;
	leaf::error_id e1=f12();
	leaf::error_id e2=f34();
	{
		int e1c1=0, e1c2=0;
		bool handled = exp.handle_error( e1,
			[&e1c1]( info<3>, info<4> )
			{
				++e1c1;
			},
			[&e1c2]( info<1> const & i1, info<2> const & i2 )
			{
				BOOST_TEST(i1.value==1);
				BOOST_TEST(i2.value==2);
				++e1c2;
			} );
		BOOST_TEST(handled);
		BOOST_TEST(e1c1==0);
		BOOST_TEST(e1c2==1);
	}
	{
		int e2c1=0, e2c2=0;
		bool handled = exp.handle_error( e2,
			[&e2c1]( info<1>, info<2> )
			{
				++e2c1;
			},
			[&e2c2]( info<3> const & i3, info<4> const & i4 )
			{
				BOOST_TEST(i3.value==3);
				BOOST_TEST(i4.value==4);
				++e2c2;
			} );
		BOOST_TEST(handled);
		BOOST_TEST(e2c1==0);
		BOOST_TEST(e2c2==1);
	}
	return boost::report_errors();
}