libstdc++-v3/testsuite/experimental/net/buffer/arithmetic.cc

   1 // Copyright (C) 2015-2021 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-do run { target c++14 } }
  19
  20 #include <experimental/buffer>
  21 #include <testsuite_hooks.h>
  22
  23 using std::experimental::net::mutable_buffer;
  24 using std::experimental::net::const_buffer;
  25
  26 void
  27 test01()
  28 {
  29   bool test __attribute__((unused)) = false;
  30   char c[4];
  31
  32   mutable_buffer mb;
  33   mb = mb + 0;
  34   VERIFY( mb.data() == nullptr );
  35   VERIFY( mb.size() == 0 );
  36
  37   mb = 0 + mb;
  38   VERIFY( mb.data() == nullptr );
  39   VERIFY( mb.size() == 0 );
  40
  41   mb = mutable_buffer(c, sizeof(c));
  42   mb = mb + 1;
  43   VERIFY( mb.data() == c+1 );
  44   VERIFY( mb.size() == 3 );
  45
  46   mb = mb + 2;
  47   VERIFY( mb.data() == c+3 );
  48   VERIFY( mb.size() == 1 );
  49
  50   mb = mb + 2;
  51   VERIFY( mb.data() == c+4 );
  52   VERIFY( mb.size() == 0 );
  53
  54   mb = mutable_buffer(c, sizeof(c));
  55   mb = 3 + mb;
  56   VERIFY( mb.data() == c+3 );
  57   VERIFY( mb.size() == 1 );
  58
  59   mb = 2 + mb;
  60   VERIFY( mb.data() == c+4 );
  61   VERIFY( mb.size() == 0 );
  62 }
  63
  64 void
  65 test02()
  66 {
  67   bool test __attribute__((unused)) = false;
  68   char c[4];
  69
  70   const_buffer cb;
  71   cb = cb + 0;
  72   VERIFY( cb.data() == nullptr );
  73   VERIFY( cb.size() == 0 );
  74
  75   cb = 0 + cb;
  76   VERIFY( cb.data() == nullptr );
  77   VERIFY( cb.size() == 0 );
  78
  79   cb = const_buffer(c, sizeof(c));
  80   cb = cb + 1;
  81   VERIFY( cb.data() == c+1 );
  82   VERIFY( cb.size() == 3 );
  83
  84   cb = cb + 2;
  85   VERIFY( cb.data() == c+3 );
  86   VERIFY( cb.size() == 1 );
  87
  88   cb = cb + 2;
  89   VERIFY( cb.data() == c+4 );
  90   VERIFY( cb.size() == 0 );
  91
  92   cb = const_buffer(c, sizeof(c));
  93   cb = 3 + cb;
  94   VERIFY( cb.data() == c+3 );
  95   VERIFY( cb.size() == 1 );
  96
  97   cb = 2 + cb;
  98   VERIFY( cb.data() == c+4 );
  99   VERIFY( cb.size() == 0 );
 100 }
 101
 102 int
 103 main()
 104 {
 105   test01();
 106   test02();
 107 }