libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/2.cc

   1 // 1999-10-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21
  22 // 27.5.2 template class basic_streambuf
  23
  24 #include <streambuf>
  25 #include <ostream>
  26 #include <string>
  27 #include <testsuite_hooks.h>
  28
  29 // test03
  30 // http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00151.html
  31 template<typename charT, typename traits = std::char_traits<charT> >
  32   class basic_nullbuf : public std::basic_streambuf<charT, traits>
  33   {
  34   protected:
  35     typedef typename
  36       std::basic_streambuf<charT, traits>::int_type int_type;
  37     virtual int_type
  38     overflow(int_type c)
  39     {  return traits::not_eof(c); }
  40   };
  41
  42 typedef basic_nullbuf<wchar_t> nullbuf;
  43
  44 template<typename T>
  45   wchar_t
  46   print(const T& x)
  47   {
  48    nullbuf ob;
  49    std::wostream out(&ob);
  50    out << x << std::endl;
  51    return (!out ? L'0' : L'1');
  52  }
  53
  54 void test03()
  55 {
  56   bool test __attribute__((unused)) = true;
  57   const std::wstring control01(L"11111");
  58   std::wstring test01;
  59
  60   test01 += print(true);
  61   test01 += print(3.14159);
  62   test01 += print(10);
  63   test01 += print(L'x');
  64   test01 += print(L"pipo");
  65
  66   VERIFY( test01 == control01 );
  67 }
  68
  69 int main()
  70 {
  71   test03();
  72   return 0;
  73 }