libstdc++-v3/testsuite/22_locale/money_get/get/char/9.cc

   1 // 2003-05-27 Brendan Kehoe  <brendan@zen.org>
   2
   3 // Copyright (C) 2003 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // $22.2.6.3.3/8
  22 // The number of digits required after the decimal point (if any) is exactly
  23 // the value returned by frac_digits().
  24
  25 #include <locale>
  26 #include <sstream>
  27
  28 class dublin : public std::moneypunct<char> {
  29 public:
  30   int do_frac_digits() const { return 3; }
  31 };
  32
  33 int main()
  34 {
  35   std::istringstream liffey;
  36   std::string coins;
  37
  38   std::locale eire(std::locale::classic(), new dublin);
  39   liffey.imbue(eire);
  40
  41   const std::money_get<char>& greed
  42     = std::use_facet<std::money_get<char> >(liffey.getloc());
  43
  44   typedef std::istreambuf_iterator<char> iterator_type;
  45   iterator_type is(liffey);
  46   iterator_type end;
  47
  48   std::ios_base::iostate err01 = std::ios_base::goodbit;
  49
  50   int fails = 0;
  51
  52   // Feed it 1 digit too many, which should fail.
  53   liffey.str("12.3456");
  54   greed.get(is, end, false, liffey, err01, coins);
  55   if (! (err01 & std::ios_base::failbit ))
  56     fails |= 0x01;
  57
  58   err01 = std::ios_base::goodbit;
  59
  60   // Feed it exactly what it wants, which should succeed.
  61   liffey.str("12.345");
  62   greed.get(is, end, false, liffey, err01, coins);
  63   if ( err01 & std::ios_base::failbit )
  64     fails |= 0x02;
  65
  66   err01 = std::ios_base::goodbit;
  67
  68   // Feed it 1 digit too few, which should fail.
  69   liffey.str("12.34");
  70   greed.get(is, end, false, liffey, err01, coins);
  71   if (! ( err01 & std::ios_base::failbit ))
  72     fails |= 0x04;
  73
  74   err01 = std::ios_base::goodbit;
  75
  76   // Feed it only a decimal-point, which should fail.
  77   liffey.str("12.");
  78   greed.get(is, end, false, liffey, err01, coins);
  79   if (! (err01 & std::ios_base::failbit ))
  80     fails |= 0x08;
  81
  82   err01 = std::ios_base::goodbit;
  83
  84   // Feed it no decimal-point at all, which should succeed.
  85   liffey.str("12");
  86   greed.get(is, end, false, liffey, err01, coins);
  87   if ( err01 & std::ios_base::failbit )
  88     fails |= 0x10;
  89
  90   return fails;
  91 }