libstdc++-v3/testsuite/23_containers/unordered_map/dr761.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // 2008-05-22  Paolo Carlini  <paolo.carlini@oracle.com>
   3 //
   4 // Copyright (C) 2008 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 2, 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 copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 #include <unordered_map>
  23 #include <stdexcept>
  24 #include <testsuite_hooks.h>
  25
  26 // DR 761. unordered_map needs an at() member function.
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   typedef std::unordered_map<int, double> map_type;
  31
  32   {
  33     map_type m;
  34     m[0] = 1.5;
  35
  36     double& rd = m.at(0);
  37     VERIFY( rd == 1.5 );
  38     try
  39       {
  40         m.at(1);
  41       }
  42     catch(std::out_of_range& obj)
  43       {
  44         // Expected.
  45       }
  46     catch(...)
  47       {
  48         // Failed.
  49         throw;
  50       }
  51   }
  52
  53   {
  54     map_type m;
  55     m[1] = 2.5;
  56     const map_type cm(m);
  57
  58     const double& crd = cm.at(1);
  59     VERIFY( crd == 2.5 );
  60     try
  61       {
  62         cm.at(0);
  63       }
  64     catch(std::out_of_range& obj)
  65       {
  66         // Expected.
  67       }
  68     catch(...)
  69       {
  70         // Failed.
  71         throw;
  72       }
  73   }
  74 }
  75
  76 int main()
  77 {
  78   test01();
  79   return 0;
  80 }