libstdc++-v3/testsuite/22_locale/numpunct/members/pod/2.cc

   1 // 2003-07-09  Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2003 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 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 #include <locale>
  22 #include <sstream>
  23 #include <ostream>
  24 #include <stdexcept>
  25 #include <ext/pod_char_traits.h>
  26 #include <testsuite_hooks.h>
  27
  28 // Check for numpunct and ctype dependencies. Make sure that numpunct
  29 // can be created without ctype.
  30 void test01()
  31 {
  32   using namespace std;
  33   using __gnu_test::pod_type;
  34
  35   typedef numpunct<pod_type>::string_type       string_type;
  36   typedef basic_ostringstream<pod_type>                 ostream_type;
  37
  38   bool          test = true;
  39
  40   // Test formatted output.
  41   ostream_type          os;
  42   const locale  loc = locale::classic();
  43   os.imbue(loc);
  44   os.setf(ios_base::boolalpha);
  45   os.exceptions(ios_base::badbit);
  46
  47   // 1: fail, no num_put.
  48   try
  49     {
  50       // Calls to num_put.put will fail, as there's no num_put facet.
  51       os << true;
  52       test = false;
  53     }
  54   catch(const bad_cast& obj)
  55     { }
  56   catch(...)
  57     { test = false; }
  58   VERIFY( test );
  59
  60   // 2: fail, no ctype
  61   const locale  loc2(loc, new num_put<pod_type>);
  62   os.clear();
  63   os.imbue(loc2);
  64   try
  65     {
  66       // Calls to ctype.widen will fail, as there's no ctype facet.
  67       os << true;
  68       test = false;
  69     }
  70   catch(const bad_cast& obj)
  71     { }
  72   catch(...)
  73     { test = false; }
  74   VERIFY( test );
  75
  76   // 3: fail, no numpunct
  77   const locale  loc3(loc, new ctype<pod_type>);
  78   os.clear();
  79   os.imbue(loc3);
  80   try
  81     {
  82       // Formatted output fails as no numpunct.
  83       os << true;
  84       test = false;
  85     }
  86   catch(const bad_cast& obj)
  87     { }
  88   catch(...)
  89     { test = false; }
  90   VERIFY( test );
  91
  92   // 4: works.
  93   const locale  loc4(loc3, new numpunct<pod_type>);
  94   os.clear();
  95   os.imbue(loc4);
  96   try
  97     {
  98       os << long(500);
  99       string_type s = os.str();
 100       VERIFY( s.length() == 3 );
 101
 102       VERIFY( os.narrow(s[0], char()) == '5' );
 103       VERIFY( os.narrow(s[1], char()) == '0' );
 104       VERIFY( os.narrow(s[2], char()) == '0' );
 105     }
 106   catch(const bad_cast& obj)
 107     { test = false; }
 108   catch(...)
 109     { test = false; }
 110   VERIFY( test );
 111 }
 112
 113 int main()
 114 {
 115   test01();
 116   return 0;
 117 }