libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/1.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009, 2010
   4 // Free Software Foundation
   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 3, 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 COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  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(0);
  41   std::istream is_03(&isbuf_03);
  42   std::istream is_04(&isbuf_04);
  43   std::ios_base::iostate state1, state2;
  44
  45   // istream& read(char_type* s, streamsize n)
  46   char carray[60] = "";
  47   is_04.read(carray, 9);
  48   VERIFY( is_04.peek() == ':' );
  49
  50   // istream& ignore(streamsize n = 1, int_type delim = traits::eof())
  51   state1 = is_04.rdstate();
  52   is_04.ignore();
  53   VERIFY( is_04.gcount() == 1 );
  54   state2 = is_04.rdstate();
  55   VERIFY( state1 == state2 );
  56   VERIFY( is_04.peek() == ' ' );
  57
  58   state1 = is_04.rdstate();
  59   is_04.ignore(0);
  60   VERIFY( is_04.gcount() == 0 );
  61   state2 = is_04.rdstate();
  62   VERIFY( state1 == state2 );
  63   VERIFY( is_04.peek() == ' ' );
  64
  65   state1 = is_04.rdstate();
  66   is_04.ignore(5, traits_type::to_int_type(' '));
  67   VERIFY( is_04.gcount() == 1 );
  68   state2 = is_04.rdstate();
  69   VERIFY( state1 == state2 );
  70   VERIFY( is_04.peek() == 'j' );
  71 }
  72
  73 int
  74 main()
  75 {
  76   test01();
  77   return 0;
  78 }