libstdc++-v3/testsuite/21_strings/basic_string/element_access/char/3.cc

   1 // 1999-06-08 bkoz
   2
   3 // Copyright (C) 1999-2024 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 template class basic_string
  21
  22 #include <string>
  23 #include <stdexcept>
  24 #include <testsuite_hooks.h>
  25
  26 // Do another sanity check, this time for member functions that return
  27 // iterators, namely insert and erase.
  28 void test02(void)
  29 {
  30   typedef std::string::size_type csize_type;
  31   typedef std::string::iterator siterator;
  32   typedef std::string::reverse_iterator sriterator;
  33   siterator it1;
  34   sriterator rit1;
  35
  36   const std::string str01("its beach, santa cruz");
  37
  38   std::string str02 = str01;
  39   std::string str05 = str02; // optional, so that begin below causes a mutate
  40   std::string::iterator p = str02.insert(str02.begin(), ' ');
  41   std::string str03 = str02;
  42   VERIFY( str03 == str02 );
  43   *p = '!';
  44   VERIFY( *str03.c_str() == ' ' );
  45   str03[0] = '@';
  46   VERIFY( str02[0] == '!' );
  47   VERIFY( *p == '!' );
  48   VERIFY( str02 != str05 );
  49   VERIFY( str02 != str03 );
  50
  51   std::string str10 = str01;
  52   std::string::iterator p2 = str10.insert(str10.begin(), 'a');
  53   std::string str11 = str10;
  54   *p2 = 'e';
  55   VERIFY( str11 != str10 );
  56
  57   std::string str06 = str01;
  58   std::string str07 = str06; // optional, so that begin below causes a mutate
  59   p = str06.erase(str06.begin());
  60   std::string str08 = str06;
  61   VERIFY( str08 == str06 );
  62   *p = '!';
  63   VERIFY( *str08.c_str() == 't' );
  64   str08[0] = '@';
  65   VERIFY( str06[0] == '!' );
  66   VERIFY( *p == '!' );
  67   VERIFY( str06 != str07 );
  68   VERIFY( str06 != str08 );
  69
  70   std::string str12 = str01;
  71   p2 = str12.erase(str12.begin(), str12.begin() + str12.size() - 1);
  72   std::string str13 = str12;
  73   *p2 = 'e';
  74   VERIFY( str12 != str13 );
  75 }
  76
  77 int main()
  78 {
  79   test02();
  80   return 0;
  81 }