libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/5.cc

   1 // 2003-09-22  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 Free Software Foundation
   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 // 27.6.2.5.3 basic_ostream manipulator inserters
  22 //
  23 // _GLIBCXX_RESOLVE_LIB_DEFECTS
  24 // DR 60. What is a formatted input function?
  25 // Inserters for manipulators do not behave as formatted output functions.
  26
  27 #include <ostream>
  28 #include <stdexcept>
  29 #include <testsuite_hooks.h>
  30 #include <testsuite_io.h>
  31
  32 std::ostream& func1(std::ostream&)
  33 { throw std::runtime_error(""); }
  34
  35 std::ios& func2(std::ios&)
  36 { throw std::runtime_error(""); }
  37
  38 std::ios_base& func3(std::ios_base&)
  39 { throw std::runtime_error(""); }
  40
  41 template<typename T>
  42 void test(T& (*f)(T&))
  43 {
  44   bool test __attribute__((unused)) = true;
  45
  46   __gnu_test::sync_streambuf buf;
  47   std::ostream os(&buf);
  48
  49   __gnu_test::sync_streambuf buf_tie;
  50   std::ostream os_tie(&buf_tie);
  51
  52   // No sentry should be constructed so os.tie()->flush() should not be
  53   // called.
  54   os.tie(&os_tie);
  55
  56   try
  57     {
  58       os << f;
  59       // Exceptions thrown by f should not be caught
  60       VERIFY( false );
  61     }
  62   catch (std::runtime_error&)
  63     {
  64     }
  65
  66   // Exceptions thrown by f should not cause badbit to be set
  67   VERIFY( os.good() );
  68   VERIFY( !buf_tie.sync_called() );
  69
  70   // The manipulator should be called even if !os.good().
  71   os.setstate(std::ios_base::eofbit);
  72
  73   try
  74     {
  75       os << f;
  76       // Exceptions thrown by f should not be caught
  77       VERIFY( false );
  78     }
  79   catch (std::runtime_error&)
  80     {
  81     }
  82
  83   // Exceptions thrown by f should not cause badbit to be set
  84   VERIFY( os.rdstate() == std::ios_base::eofbit );
  85   VERIFY( !buf_tie.sync_called() );
  86 }
  87
  88 void test05()
  89 {
  90   test(&func1);
  91   test(&func2);
  92   test(&func3);
  93 }
  94
  95 int main()
  96 {
  97   test05();
  98   return 0;
  99 }