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

   1 // Copyright (C) 2004-2014 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 27.6.1.3 unformatted input functions
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   typedef std::ios::traits_type traits_type;
  28
  29   bool test __attribute__((unused)) = true;
  30   const std::wstring str_01;
  31   const std::wstring str_02(L"soul eyes: john coltrane quartet");
  32   std::wstring strtmp;
  33
  34   std::wstringbuf isbuf_03(str_02, std::ios_base::in);
  35   std::wstringbuf isbuf_04(str_02, std::ios_base::in);
  36
  37   std::wistream is_00(0);
  38   std::wistream is_03(&isbuf_03);
  39   std::wistream is_04(&isbuf_04);
  40   std::ios_base::iostate state1, state2;
  41
  42   // istream& read(char_type* s, streamsize n)
  43   wchar_t carray[60] = L"";
  44   is_04.read(carray, 9);
  45   VERIFY( is_04.peek() == L':' );
  46
  47   // istream& ignore(streamsize n = 1, int_type delim = traits::eof())
  48   state1 = is_04.rdstate();
  49   is_04.ignore();
  50   VERIFY( is_04.gcount() == 1 );
  51   state2 = is_04.rdstate();
  52   VERIFY( state1 == state2 );
  53   VERIFY( is_04.peek() == L' ' );
  54
  55   state1 = is_04.rdstate();
  56   is_04.ignore(0);
  57   VERIFY( is_04.gcount() == 0 );
  58   state2 = is_04.rdstate();
  59   VERIFY( state1 == state2 );
  60   VERIFY( is_04.peek() == L' ' );
  61
  62   state1 = is_04.rdstate();
  63   is_04.ignore(5, traits_type::to_int_type(' '));
  64   VERIFY( is_04.gcount() == 1 );
  65   state2 = is_04.rdstate();
  66   VERIFY( state1 == state2 );
  67   VERIFY( is_04.peek() == L'j' );
  68 }
  69
  70 int
  71 main()
  72 {
  73   test01();
  74   return 0;
  75 }