old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_stringbuf/pbackfail/wchar_t/2.cc

   1 // 2004-10-01  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.7.1.3  Overridden virtual functions  [lib.stringbuf.virtuals]
  22
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 class my_stringbuf : public std::wstringbuf
  27 {
  28 public:
  29   my_stringbuf(const std::wstring& str, std::ios_base::openmode mode)
  30   : std::wstringbuf(str, mode) { }
  31
  32   int_type
  33   pub_pbackfail(int_type __c)
  34   { return this->pbackfail(__c); }
  35 };
  36
  37 // We weren't enforcing 27.7.1.3/2, bullet 2: "... and if
  38 // mode & ios_base::out is nonzero, ..."
  39 void test01()
  40 {
  41   bool test __attribute__((unused)) = true;
  42   using namespace std;
  43
  44   typedef my_stringbuf::int_type    int_type;
  45   typedef my_stringbuf::traits_type traits_type;
  46
  47   my_stringbuf sbuf(L"any", ios_base::in);
  48
  49   int_type c = sbuf.sbumpc();
  50   VERIFY( c == L'a' );
  51
  52   c = sbuf.pub_pbackfail(L'x');
  53   VERIFY( c == traits_type::eof() );
  54   VERIFY( sbuf.str() == L"any" );
  55   c = sbuf.sgetc();
  56   VERIFY( c == L'n' );
  57 }
  58
  59
  60 int main()
  61 {
  62   test01();
  63   return 0;
  64 }