libstdc++-v3/testsuite/22_locale/ctype/narrow/char/1.cc

   1 // 2002-05-24 bkoz
   2
   3 // Copyright (C) 2002-2020 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 // 22.2.1.3.2 ctype<char> members
  22
  23 #include <locale>
  24 #include <vector>
  25 #include <testsuite_hooks.h>
  26
  27 // libstdc++/6701
  28 void test01()
  29 {
  30   using namespace std;
  31   typedef char  wide_type;
  32
  33   const char dfault = '?';
  34   const locale loc_c = locale::classic();
  35   const ctype<wide_type>& ctype_c = use_facet<ctype<wide_type> >(loc_c);
  36
  37   basic_string<wide_type>       wide("wibble");
  38   basic_string<char>            narrow("wibble");
  39   vector<char>                  narrow_chars(wide.length() + 1);
  40
  41   // narrow(charT c, char dfault) const
  42   for (size_t i = 0; i < wide.length(); ++i)
  43     {
  44       char c = ctype_c.narrow(wide[i], dfault);
  45       VERIFY( c == narrow[i] );
  46     }
  47
  48   // narrow(const charT* low, const charT* high, char dfault, char* dest) const
  49   ctype_c.narrow(&wide[0], &wide[0] + wide.length(), dfault, &narrow_chars[0]);
  50   VERIFY( narrow_chars[0] != dfault );
  51   for (size_t i = 0; i < wide.length(); ++i)
  52     VERIFY( narrow_chars[i] == narrow[i] );
  53 }
  54
  55 int main()
  56 {
  57   test01();
  58   return 0;
  59 }