boostorg/array
1
0
Fork 1
mirror of https://github.com/boostorg/array.git synced 2025-07-29 20:27:21 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add operator<=>, array_thw_test.cpp

Browse Source
This commit is contained in:
Peter Dimov
2025-01-27 03:40:19 +02:00
parent 527ff0a80d
commit 9a4010b88b
3 changed files with 105 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
test/array_thw_test.cpp Normal file
View File

@ -0,0 +1,87 @@
// Copyright 2025 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt)
#include <boost/array.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#include <cstddef>
#if !defined(__cpp_impl_three_way_comparison)
BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is not defined" )
int main() {}
#elif !( __cpp_impl_three_way_comparison >= 201907L )
BOOST_PRAGMA_MESSAGE( "Test skipped because __cpp_impl_three_way_comparison is defined to " BOOST_STRINGIZE(__cpp_impl_three_way_comparison) )
int main() {}
#else
template<class T, std::size_t N> void test()
{
constexpr auto eq = 0 <=> 0;
constexpr auto lt = 0 <=> 1;
constexpr auto gt = 1 <=> 0;
{
boost::array<T, N> const a1 = {};
boost::array<T, N> const a2 = {};
BOOST_TEST( ( a1 <=> a2 ) == eq );
}
{
boost::array<T, N> a1;
boost::array<T, N> a2;
a1.fill( 1 );
a2.fill( 1 );
BOOST_TEST( ( a1 <=> a2 ) == eq );
}
for( std::size_t i = 0; i < N; ++i )
{
boost::array<T, N> a1;
boost::array<T, N> a2;
a1.fill( 1 );
a2.fill( 1 );
a1[ i ] = 0;
BOOST_TEST( ( a1 <=> a2 ) == lt );
{
boost::array<T, N> const a3 = a1;
boost::array<T, N> const a4 = a2;
BOOST_TEST( ( a3 <=> a4 ) == lt );
}
a1[ i ] = 2;
BOOST_TEST( ( a1 <=> a2 ) == gt );
{
boost::array<T, N> const a3 = a1;
boost::array<T, N> const a4 = a2;
BOOST_TEST( ( a3 <=> a4 ) == gt );
}
}
}
int main()
{
// test<int, 0>();
test<int, 1>();
test<int, 7>();
return boost::report_errors();
}
#endif