libstdc++-v3/testsuite/27_io/basic_ios/clear/char/1.cc

   1 // 1999-09-20 bkoz
   2
   3 // Copyright (C) 1999, 2003, 2009, 2010 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // 27.4.4.2 basic_ios member functions
  22
  23 // NB: Don't include any other headers in this file.
  24 #include <ios>
  25 #include <testsuite_hooks.h>
  26
  27 // 27.4.4.3 basic_ios iostate flags function
  28 void test01()
  29 {
  30   bool test __attribute__((unused)) = true;
  31
  32   typedef std::ios_base::fmtflags fmtflags;
  33   typedef std::ios_base::iostate iostate;
  34   using std::ios_base;
  35
  36   iostate iostate02, iostate03;
  37   const iostate iostate01 = std::ios_base::badbit | std::ios_base::eofbit;
  38   std::ios ios_01(0);
  39
  40   // bool fail() const
  41   VERIFY( ios_01.fail() );
  42
  43   // bool operator!() const
  44   VERIFY( !ios_01 );
  45
  46   // iostate rdstate() const
  47   iostate03 = ios_01.rdstate();
  48   VERIFY( static_cast<bool>(iostate03 & std::ios_base::badbit) );
  49
  50   // void clear(iostate state = goodbit)
  51   try {
  52     ios_01.clear(std::ios_base::eofbit);
  53     iostate02 = ios_01.rdstate();
  54     VERIFY( static_cast<bool>(iostate02 & iostate01) );
  55   }
  56   catch(std::ios_base::failure& fail) {
  57     VERIFY( false );
  58   }
  59   catch(...) {
  60     VERIFY( false );
  61   }
  62 }
  63
  64 int main()
  65 {
  66   test01();
  67   return 0;
  68 }