libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/08.cc

   1 // 1999-04-12 bkoz
   2
   3 // Copyright (C) 1999-2018 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 // 27.6.1.2.2 arithmetic extractors
  21
  22 #include <istream>
  23 #include <sstream>
  24 #include <locale>
  25 #include <testsuite_hooks.h>
  26
  27 namespace std {
  28   class test_numpunct2 : public numpunct<char>
  29   {
  30   protected:
  31     string
  32     do_grouping() const
  33     { return string("\002\003"); }
  34   };
  35 } // namespace std
  36
  37 void test08()
  38 {
  39   // manufactured locale, grouping is turned on
  40   unsigned int h4 = 0, h3 = 0, h2 = 0;
  41   const std::string s1("1,22 205,19 22,123,22");
  42
  43   std::istringstream is(s1);
  44   is.imbue(std::locale(std::locale(), new std::test_numpunct2));
  45
  46   // Basic operation.
  47   is >> h4;
  48   VERIFY( h4 == 122 );
  49   VERIFY( is.good() );
  50
  51   is.clear();
  52   is >> h3;
  53   VERIFY( h3 == 20519 );
  54   VERIFY( is.good() );
  55
  56   is.clear();
  57   is >> h2;
  58   VERIFY( h2 == 2212322 );
  59   VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
  60 }
  61
  62 int main()
  63 {
  64   test08();
  65   return 0;
  66 }