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

78 lines
1.6 KiB
C++

// Copyright 2017 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/tuple/tuple.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#if defined(BOOST_NO_CXX17_STRUCTURED_BINDINGS)
BOOST_PRAGMA_MESSAGE("Skipping structured bindings test, not supported")
int main() {}
#else
int main()
{
// make_tuple
{
auto [x1] = boost::make_tuple( 1 );
BOOST_TEST_EQ( x1, 1 );
}
{
auto [x1, x2] = boost::make_tuple( 1, 2 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
}
{
auto [x1, x2, x3] = boost::make_tuple( 1, 2, 3 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
BOOST_TEST_EQ( x3, 3 );
}
{
auto [x1, x2, x3, x4] = boost::make_tuple( 1, 2, 3, 4 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
BOOST_TEST_EQ( x3, 3 );
BOOST_TEST_EQ( x4, 4 );
}
// tuple
{
auto [x1] = boost::tuple<int>( 1 );
BOOST_TEST_EQ( x1, 1 );
}
{
auto [x1, x2] = boost::tuple<int, int>( 1, 2 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
}
{
auto [x1, x2, x3] = boost::tuple<int, int, int>( 1, 2, 3 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
BOOST_TEST_EQ( x3, 3 );
}
{
auto [x1, x2, x3, x4] = boost::tuple<int, int, int, int>( 1, 2, 3, 4 );
BOOST_TEST_EQ( x1, 1 );
BOOST_TEST_EQ( x2, 2 );
BOOST_TEST_EQ( x3, 3 );
BOOST_TEST_EQ( x4, 4 );
}
return boost::report_errors();
}
#endif