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

   1 // 2003-05-27 Brendan Kehoe  <brendan@zen.org>
   2
   3 // Copyright (C) 2003-2022 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 // $22.2.6.3/3
  21 // The number of digits required after the decimal point (if any) is exactly
  22 // the value returned by frac_digits().
  23
  24 #include <locale>
  25 #include <sstream>
  26
  27 class dublin : public std::moneypunct<char> {
  28 public:
  29   int do_frac_digits() const { return 3; }
  30 };
  31
  32 int main()
  33 {
  34   std::istringstream liffey;
  35   std::string coins;
  36
  37   std::locale eire(std::locale::classic(), new dublin);
  38   liffey.imbue(eire);
  39
  40   const std::money_get<char>& greed
  41     = std::use_facet<std::money_get<char> >(liffey.getloc());
  42
  43   typedef std::istreambuf_iterator<char> iterator_type;
  44   iterator_type end;
  45
  46   std::ios_base::iostate err01 = std::ios_base::goodbit;
  47
  48   int fails = 0;
  49
  50   // Feed it 1 digit too many, which should fail.
  51   liffey.str("12.3456");
  52   greed.get(liffey, end, false, liffey, err01, coins);
  53   if (! (err01 & std::ios_base::failbit ))
  54     fails |= 0x01;
  55
  56   err01 = std::ios_base::goodbit;
  57
  58   // Feed it exactly what it wants, which should succeed.
  59   liffey.str("12.345");
  60   greed.get(liffey, end, false, liffey, err01, coins);
  61   if ( err01 & std::ios_base::failbit )
  62     fails |= 0x02;
  63
  64   err01 = std::ios_base::goodbit;
  65
  66   // Feed it 1 digit too few, which should fail.
  67   liffey.str("12.34");
  68   greed.get(liffey, end, false, liffey, err01, coins);
  69   if (! ( err01 & std::ios_base::failbit ))
  70     fails |= 0x04;
  71
  72   err01 = std::ios_base::goodbit;
  73
  74   // Feed it only a decimal-point, which should fail.
  75   liffey.str("12.");
  76   greed.get(liffey, end, false, liffey, err01, coins);
  77   if (! (err01 & std::ios_base::failbit ))
  78     fails |= 0x08;
  79
  80   err01 = std::ios_base::goodbit;
  81
  82   // Feed it no decimal-point at all, which should succeed.
  83   liffey.str("12");
  84   greed.get(liffey, end, false, liffey, err01, coins);
  85   if ( err01 & std::ios_base::failbit )
  86     fails |= 0x10;
  87
  88   return fails;
  89 }