libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/1.cc

   1 // 1999-06-08 bkoz
   2
   3 // Copyright (C) 1999-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 21.3.4 basic_string element access
  21
  22 #include <string>
  23 #include <stdexcept>
  24 #include <testsuite_hooks.h>
  25
  26 void test01(void)
  27 {
  28   typedef std::string::size_type csize_type;
  29   typedef std::string::const_reference cref;
  30   typedef std::string::reference ref;
  31   csize_type csz01, csz02;
  32
  33   const std::string str01("tamarindo, costa rica");
  34   std::string str02("41st street beach, capitola, california");
  35   std::string str03;
  36
  37   // const_reference operator[] (size_type pos) const;
  38   csz01 = str01.size();
  39   cref cref1 = str01[csz01 - 1];
  40   VERIFY( cref1 == 'a' );
  41   cref cref2 = str01[csz01];
  42   VERIFY( cref2 == char() );
  43
  44   // reference operator[] (size_type pos);
  45   csz02 = str02.size();
  46   ref ref1 = str02[csz02 - 1];
  47   VERIFY( ref1 == 'a' );
  48   ref ref2 = str02[1];
  49   VERIFY( ref2 == '1' );
  50
  51   // const_reference at(size_type pos) const;
  52   csz01 = str01.size();
  53   cref cref3 = str01.at(csz01 - 1);
  54   VERIFY( cref3 == 'a' );
  55   try {
  56     str01.at(csz01);
  57     VERIFY( false ); // Should not get here, as exception thrown.
  58   }
  59   catch(std::out_of_range& fail) {
  60     VERIFY( true );
  61   }
  62   catch(...) {
  63     VERIFY( false );
  64   }
  65
  66   // reference at(size_type pos);
  67   csz01 = str02.size();
  68   ref ref3 = str02.at(csz02 - 1);
  69   VERIFY( ref3 == 'a' );
  70   try {
  71     str02.at(csz02);
  72     VERIFY( false ); // Should not get here, as exception thrown.
  73   }
  74   catch(std::out_of_range& fail) {
  75     VERIFY( true );
  76   }
  77   catch(...) {
  78     VERIFY( false );
  79   }
  80 }
  81
  82 int main()
  83 {
  84   test01();
  85   return 0;
  86 }