libstdc++-v3/testsuite/22_locale/num_get/get/char/2.cc

   1 // 2001-11-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 22.2.2.1.1  num_get members
  22
  23 #include <locale>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void test02()
  28 {
  29   using namespace std;
  30   typedef istreambuf_iterator<char> iterator_type;
  31
  32   bool test __attribute__((unused)) = true;
  33
  34   // basic construction
  35   locale loc_c = locale::classic();
  36
  37   // sanity check the data is correct.
  38   const string empty;
  39
  40   bool b1 = true;
  41   bool b0 = false;
  42   unsigned long ul1 = 1294967294;
  43   unsigned long ul2 = 0;
  44   unsigned long ul;
  45   double d1 =  1.02345e+308;
  46   double d2 = 3.15e-308;
  47   double d;
  48
  49   // cache the num_get facet
  50   istringstream iss;
  51   iss.imbue(loc_c);
  52   const num_get<char>& ng = use_facet<num_get<char> >(iss.getloc());
  53   const ios_base::iostate goodbit = ios_base::goodbit;
  54   const ios_base::iostate eofbit = ios_base::eofbit;
  55   ios_base::iostate err = ios_base::goodbit;
  56
  57   // C
  58   // bool, more twisted examples
  59   iss.str("true ");
  60   iss.clear();
  61   iss.setf(ios_base::boolalpha);
  62   err = goodbit;
  63   ng.get(iss.rdbuf(), 0, iss, err, b0);
  64   VERIFY( b0 == true );
  65   VERIFY( err == goodbit );
  66
  67   iss.str("false ");
  68   iss.clear();
  69   iss.setf(ios_base::boolalpha);
  70   err = goodbit;
  71   ng.get(iss.rdbuf(), 0, iss, err, b1);
  72   VERIFY( b1 == false );
  73   VERIFY( err == goodbit );
  74
  75   // unsigned long, in a locale that does not group
  76   iss.imbue(loc_c);
  77   iss.str("1294967294");
  78   iss.clear();
  79   err = goodbit;
  80   ng.get(iss.rdbuf(), 0, iss, err, ul);
  81   VERIFY( ul == ul1);
  82   VERIFY( err == eofbit );
  83
  84   iss.str("0+++++++++++++++++++");
  85   iss.clear();
  86   err = goodbit;
  87   ng.get(iss.rdbuf(), 0, iss, err, ul);
  88   VERIFY( ul == ul2);
  89   VERIFY( err == goodbit );
  90
  91   // double
  92   iss.imbue(loc_c);
  93   iss.str("1.02345e+308++++++++");
  94   iss.clear();
  95   iss.width(20);
  96   iss.setf(ios_base::left, ios_base::adjustfield);
  97   err = goodbit;
  98   ng.get(iss.rdbuf(), 0, iss, err, d);
  99   VERIFY( d == d1 );
 100   VERIFY( err == goodbit );
 101
 102   iss.str("+3.15e-308");
 103   iss.clear();
 104   iss.width(20);
 105   iss.setf(ios_base::right, ios_base::adjustfield);
 106   err = goodbit;
 107   ng.get(iss.rdbuf(), 0, iss, err, d);
 108   VERIFY( d == d2 );
 109   VERIFY( err == eofbit );
 110 }
 111
 112 int main()
 113 {
 114   test02();
 115   return 0;
 116 }
 117
 118
 119 // Kathleen Hannah, humanitarian, woman, art-thief