libstdc++-v3/testsuite/22_locale/locale/operations/2.cc

   1 // 2000-09-11 Benjamin Kosnik <bkoz@redhat.com>
   2
   3 // Copyright (C) 2000-2015 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 // 22.1.1.4 locale operators [lib.locale.operators]
  21
  22 #include <cwchar> // for mbstate_t
  23 #include <locale>
  24 #include <testsuite_hooks.h>
  25
  26 // bool operator()(const string_type&, const string_type&) const
  27 long gnu_count;
  28
  29 class gnu_collate: public std::collate<char>
  30 {
  31 protected:
  32   virtual int
  33   do_compare(const char*, const char*, const char*, const char*) const
  34   { ++gnu_count; return 0; }
  35 };
  36
  37 void test02()
  38 {
  39   using namespace std;
  40   bool test __attribute__((unused)) = true;
  41
  42   // Sanity check.
  43   locale loc_c = locale::classic();
  44   string s01("land of ");
  45   string s02("land of look behind");
  46   VERIFY( !loc_c(s01, s01) );
  47   VERIFY( loc_c(s01, s02) );
  48
  49   // Derivation, MF check.
  50   locale loc_gnu(loc_c, new gnu_collate);
  51   gnu_count = 0;
  52   loc_gnu(s01, s02);
  53   VERIFY( gnu_count == 1 );
  54 }
  55
  56 int main ()
  57 {
  58   test02();
  59   return 0;
  60 }
  61
  62
  63