libstdc++-v3/testsuite/27_io/basic_stringbuf/sputn/wchar_t/1.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == wchar_t
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2009
   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 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 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 std::wstring str_01(L"mykonos. . . or what?");
  25 std::wstring str_02(L"paris, or sainte-maxime?");
  26 std::wstring str_03;
  27 std::wstringbuf strb_01(str_01);
  28 std::wstringbuf strb_02(str_02, std::ios_base::in);
  29 std::wstringbuf strb_03(str_03, std::ios_base::out);
  30
  31 // test overloaded virtual functions
  32 void test04()
  33 {
  34   bool test __attribute__((unused)) = true;
  35   std::wstring          str_tmp;
  36   std::streamsize               strmsz_1, strmsz_2;
  37   typedef std::wstringbuf::int_type int_type;
  38   typedef std::wstringbuf::traits_type traits_type;
  39
  40   // PUT
  41   strb_03.str(str_01); //reset
  42   std::wstring::size_type sz1 = strb_03.str().length();
  43   std::wstring::size_type sz2 = strb_03.str().length();
  44
  45   // streamsize sputn(const char_type* s, streamsize n)
  46   // write up to n chars to out_cur from s, returning number assigned
  47   // NB *sputn will happily put '\0' into your stream if you give it a chance*
  48   str_tmp = strb_03.str();
  49   sz1 = str_tmp.length();
  50   strmsz_1 = strb_03.sputn(L"racadabras", 10);//"abracadabras or what?"
  51   sz2 = strb_03.str().length();
  52   VERIFY( sz1 == sz2 ); //shouldn't have changed length
  53   VERIFY( strmsz_1 == 10 );
  54   VERIFY( str_tmp != strb_03.str() );
  55   strmsz_2 = strb_03.sputn(L", i wanna reach out and", 23);
  56   VERIFY( strmsz_1 != strmsz_2 ); // should re-allocate, copy 10 chars.
  57   VERIFY( strmsz_1 == 10 );
  58   VERIFY( strmsz_2 == 23 );
  59   sz2 = strb_03.str().length();
  60   VERIFY( sz1 != sz2 ); // need to change length
  61   VERIFY( str_tmp != strb_03.str() );
  62   str_tmp = strb_02.str();
  63   strmsz_1 = strb_02.sputn(L"racadabra", 10);
  64   VERIFY( strmsz_1 == 0 );
  65   VERIFY( str_tmp == strb_02.str() );
  66 }
  67
  68 int main()
  69 {
  70   test04();
  71   return 0;
  72 }
  73
  74
  75
  76 // more candy!!!