libstdc++-v3/testsuite/27_io/basic_ostream/write/wchar_t/1.cc

   1 // Copyright (C) 2005-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 27.6.2.6 Unformatted output functions
  19 //
  20 // _GLIBCXX_RESOLVE_LIB_DEFECTS
  21 // DR 60. What is a formatted input function?
  22 // basic_ostream::write(const char_type*, streamsize) is an unformatted
  23 // output function.
  24 // DR 63. Exception-handling policy for unformatted output.
  25 // Unformatted output functions should catch exceptions thrown
  26 // from streambuf members.
  27
  28 #include <ostream>
  29 #include <streambuf>
  30 #include <testsuite_hooks.h>
  31
  32 class Buf : public std::wstreambuf
  33 {
  34 protected:
  35   virtual int_type
  36   overflow(int_type = traits_type::eof())
  37   { throw 0; }
  38 };
  39
  40 void test01()
  41 {
  42   Buf buf;
  43   std::wostream os(&buf);
  44
  45   VERIFY( os.good() );
  46
  47   os.write(L"a", 1);
  48
  49   VERIFY( os.rdstate() == std::ios_base::badbit );
  50
  51   os.clear();
  52   os.exceptions(std::ios_base::badbit);
  53
  54   try
  55     {
  56       os.write(L"b", 1);
  57       VERIFY( false );
  58     }
  59   catch (int)
  60     {
  61       VERIFY( os.rdstate() == std::ios_base::badbit );
  62     }
  63 }
  64
  65 int main()
  66 {
  67   test01();
  68   return 0;
  69 }