libstdc++-v3/testsuite/27_io/basic_stringstream/str/char/1.cc

   1 // 2001-05-24 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // 27.7.6 member functions (stringstream_members)
  23
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   std::stringstream is01;
  31   const std::string str00;
  32   const std::string str01 = "123";
  33   std::string str02;
  34   const int i01 = 123;
  35   int a = 0, b = 0;
  36
  37   std::ios_base::iostate state1, state2, stateeof;
  38   stateeof = std::ios_base::eofbit;
  39
  40   // string str() const
  41   str02 = is01.str();
  42   VERIFY( str00 == str02 );
  43
  44   // void str(const basic_string&)
  45   is01.str(str01);
  46   str02 = is01.str();
  47   VERIFY( str01 == str02 );
  48   state1 = is01.rdstate();
  49   is01 >> a;
  50   state2 = is01.rdstate();
  51   VERIFY( a == i01 );
  52   // 22.2.2.1.2 num_get virtual functions
  53   // p 13
  54   // in any case, if stage 2 processing was terminated by the test for
  55   // in == end then err != ios_base::eofbit is performed.
  56   VERIFY( state1 != state2 );
  57   VERIFY( state2 == stateeof );
  58
  59   is01.str(str01);
  60   is01 >> b;
  61   VERIFY( b != a );
  62   // as is01.good() is false, istream::sentry blocks extraction.
  63
  64   is01.clear();
  65   state1 = is01.rdstate();
  66   is01 >> b;
  67   state2 = is01.rdstate();
  68   VERIFY( b == a );
  69   VERIFY( state1 != state2 );
  70   VERIFY( state2 == stateeof );
  71 }
  72
  73 int main()
  74 {
  75   test01();
  76   return 0;
  77 }