libstdc++-v3/testsuite/19_diagnostics/error_code/operators/three_way.cc

   1 // Copyright (C) 2020-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++2a" }
  19 // { dg-do run { target c++2a } }
  20
  21 #include <system_error>
  22 #include <testsuite_error.h>
  23
  24 void
  25 test01()
  26 {
  27   std::error_code e1;
  28   std::error_code e2(std::make_error_code(std::errc::operation_not_supported));
  29
  30   VERIFY( std::is_eq(e1 <=> e1) );
  31   VERIFY( std::is_lteq(e1 <=> e1) );
  32   VERIFY( std::is_gteq(e1 <=> e1) );
  33
  34   VERIFY( std::is_neq(e1 <=> e2) );
  35   VERIFY( std::is_lt(e1 <=> e2) || std::is_gt(e1 <=> e2) );
  36   VERIFY( (e1 <=> e2) == (e1.category() <=> e2.category()) );
  37
  38   VERIFY( e1 == e1 );
  39   VERIFY( !(e1 == e2) );
  40
  41   VERIFY( !(e1 < e1) );
  42   VERIFY( !(e2 < e2) );
  43
  44   const __gnu_test::test_category cat;
  45   std::error_code e3(e2.value(), cat);
  46
  47   VERIFY( std::is_neq(e2 <=> e3) );
  48   VERIFY( std::is_lt(e2 <=> e3) || std::is_gt(e2 <=> e3) );
  49   VERIFY( (e2 <=> e3) == (e2.category() <=> e3.category()) );
  50
  51   VERIFY( !(e2 == e3) );
  52
  53   VERIFY( !(e3 < e3) );
  54   VERIFY( (e2 < e3) == (e2.category() < e3.category()) );
  55
  56   std::error_code e4(std::make_error_code(std::errc::invalid_argument));
  57
  58   VERIFY( std::is_neq(e4 <=> e2) );
  59   VERIFY( std::is_lt(e4 <=> e2) || std::is_gt(e4 <=> e2) );
  60   VERIFY( (e4 <=> e2) == (e4.value() <=> e2.value()) );
  61 }
  62
  63 int main()
  64 {
  65   test01();
  66 }