libstdc++-v3/testsuite/experimental/optional/relops/2.cc

   1 // { dg-options "-std=gnu++1y" }
   2 // { dg-do run }
   3
   4 // Copyright (C) 2013-2014 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a moved_to of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <experimental/optional>
  22 #include <testsuite_hooks.h>
  23
  24 #include <tuple>
  25 #include <string>
  26
  27 namespace ns
  28 {
  29   struct value_type
  30   {
  31     int i;
  32     std::string s;
  33   };
  34
  35   bool
  36   operator==(value_type const& lhs, value_type const& rhs)
  37   { return std::tie(lhs.i, lhs.s) == std::tie(rhs.i, rhs.s); }
  38
  39   bool
  40   operator<(value_type const& lhs, value_type const& rhs)
  41   { return std::tie(lhs.i, lhs.s) < std::tie(rhs.i, rhs.s); }
  42
  43 } // namespace ns
  44
  45 int main()
  46 {
  47   using ns::value_type;
  48   using O = std::experimental::optional<value_type>;
  49
  50   {
  51     O o, p;
  52     VERIFY( !(o < p) );
  53     VERIFY( !(o > p) );
  54     VERIFY( o <= p );
  55     VERIFY( o >= p );
  56   }
  57
  58   {
  59     O o { value_type { 42, "forty-two" } }, p;
  60     VERIFY( !(o < p) );
  61     VERIFY( o > p );
  62     VERIFY( !(o <= p) );
  63     VERIFY( o >= p );
  64   }
  65
  66   {
  67     O o, p { value_type { 42, "forty-two" } };
  68     VERIFY( o < p );
  69     VERIFY( !(o > p) );
  70     VERIFY( o <= p );
  71     VERIFY( !(o >= p) );
  72   }
  73
  74   {
  75     O o { value_type { 11, "eleventy" } }, p { value_type { 42, "forty-two" } };
  76     VERIFY( o < p );
  77     VERIFY( !(o > p) );
  78     VERIFY( o <= p );
  79     VERIFY( !(o >= p) );
  80   }
  81
  82   {
  83     O o { value_type { 42, "forty-two" } }, p { value_type { 11, "eleventy" } };
  84     VERIFY( !(o < p) );
  85     VERIFY( o > p );
  86     VERIFY( !(o <= p) );
  87     VERIFY( o >= p );
  88   }
  89
  90   {
  91     O o { value_type { 42, "forty-two" } }, p { value_type { 42, "forty-two" } };
  92     VERIFY( !(o < p) );
  93     VERIFY( !(o > p) );
  94     VERIFY( o <= p );
  95     VERIFY( o >= p );
  96   }
  97 }