old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_istream/peek/char/1.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.6.1.3 unformatted input functions
  22
  23 #include <istream>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void
  28 test01()
  29 {
  30   typedef std::ios::traits_type traits_type;
  31
  32   bool test __attribute__((unused)) = true;
  33   const std::string str_01;
  34   const std::string str_02("soul eyes: john coltrane quartet");
  35   std::string strtmp;
  36
  37   std::stringbuf isbuf_03(str_02, std::ios_base::in);
  38   std::stringbuf isbuf_04(str_02, std::ios_base::in);
  39
  40   std::istream is_00(NULL);
  41   std::istream is_03(&isbuf_03);
  42   std::istream is_04(&isbuf_04);
  43   std::ios_base::iostate state1, state2, statefail, stateeof;
  44   statefail = std::ios_base::failbit;
  45   stateeof = std::ios_base::eofbit;
  46
  47   char carray[60] = "";
  48
  49   // istream& ignore(streamsize n = 1, int_type delim = traits::eof())
  50   is_04.read(carray, 9);
  51   VERIFY( is_04.peek() == ':' );
  52
  53   state1 = is_04.rdstate();
  54   is_04.ignore();
  55   VERIFY( is_04.gcount() == 1 );
  56   state2 = is_04.rdstate();
  57   VERIFY( state1 == state2 );
  58   VERIFY( is_04.peek() == ' ' );
  59
  60   state1 = is_04.rdstate();
  61   is_04.ignore(0);
  62   VERIFY( is_04.gcount() == 0 );
  63   state2 = is_04.rdstate();
  64   VERIFY( state1 == state2 );
  65   VERIFY( is_04.peek() == ' ' );
  66
  67   state1 = is_04.rdstate();
  68   is_04.ignore(5, traits_type::to_int_type(' '));
  69   VERIFY( is_04.gcount() == 1 );
  70   state2 = is_04.rdstate();
  71   VERIFY( state1 == state2 );
  72   VERIFY( is_04.peek() == 'j' );
  73
  74   // int_type peek()
  75   state1 = is_04.rdstate();
  76   VERIFY( is_04.peek() == 'j' );
  77   VERIFY( is_04.gcount() == 0 );
  78   state2 = is_04.rdstate();
  79   VERIFY( state1 == state2 );
  80
  81   is_04.ignore(30);
  82   state1 = is_04.rdstate();
  83   VERIFY( is_04.peek() == traits_type::eof() );
  84   VERIFY( is_04.gcount() == 0 );
  85   state2 = is_04.rdstate();
  86   VERIFY( state1 != state2 );
  87 }
  88
  89 int
  90 main()
  91 {
  92   test01();
  93   return 0;
  94 }