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// Copyright 2018-2024 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)
#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
# include "leaf.hpp"
#else
# include <boost/leaf/result.hpp>
# include <boost/leaf/handle_errors.hpp>
#endif
#if BOOST_LEAF_CFG_STD_STRING
# include <sstream>
# include <iostream>
#endif
#include "lightweight_test.hpp"
namespace leaf = boost::leaf;
struct non_printable_value
{
};
struct e_err
{
template <class CharT, class Traits>
friend std::ostream & operator<<( std::basic_ostream<CharT, Traits> & os, e_err const & )
{
return os << "e_err";
}
};
int main()
{
{
leaf::result<int> r = 42;
BOOST_TEST(r);
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream ss;
ss << r;
std::string s = ss.str();
std::cout << s << std::endl;
if( BOOST_LEAF_CFG_DIAGNOSTICS )
BOOST_TEST_EQ(s, "42");
#endif
}
{
leaf::result<non_printable_value> r;
BOOST_TEST(r);
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream ss;
ss << r;
std::string s = ss.str();
std::cout << s << std::endl;
if( BOOST_LEAF_CFG_DIAGNOSTICS )
BOOST_TEST_EQ(s, "{not printable}");
#endif
}
{
leaf::result<void> r;
BOOST_TEST(r);
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream ss;
ss << r;
std::string s = ss.str();
std::cout << s << std::endl;
if( BOOST_LEAF_CFG_DIAGNOSTICS )
BOOST_TEST_EQ(s, "No error");
#endif
}
{
leaf::result<int> r = leaf::new_error(e_err{ });
BOOST_TEST(!r);
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream ss;
ss << r;
std::string s = ss.str();
std::cout << s << std::endl;
leaf::error_id err = r.error();
if( BOOST_LEAF_CFG_DIAGNOSTICS )
BOOST_TEST_EQ(s, "Error serial #" + std::to_string(err.value()/4));
#endif
}
#if BOOST_LEAF_CFG_CAPTURE
{
leaf::result<int> r = leaf::try_capture_all(
[]() -> leaf::result<int>
{
return leaf::new_error(e_err{ });
} );
#if BOOST_LEAF_CFG_STD_STRING
std::ostringstream ss;
ss << r;
std::string s = ss.str();
std::cout << s << std::endl;
leaf::error_id err = r.error();
BOOST_TEST_NE(s.find("Error serial #" + std::to_string(err.value()/4)), s.npos);
if( BOOST_LEAF_CFG_DIAGNOSTICS )
{
BOOST_TEST_NE(s.find("Captured:"), s.npos);
BOOST_TEST_NE(s.find("e_err: e_err"), s.npos);
}
#endif
}
#endif
return boost::report_errors();
}
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