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

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == char
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
   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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 std::string str_01("mykonos. . . or what?");
  26 std::string str_02("paris, or sainte-maxime?");
  27 std::string str_03;
  28 std::stringbuf strb_01(str_01);
  29 std::stringbuf strb_02(str_02, std::ios_base::in);
  30 std::stringbuf strb_03(str_03, std::ios_base::out);
  31
  32 // test member functions
  33 void test03()
  34 {
  35   bool test __attribute__((unused)) = true;
  36
  37   //stringbuf::str()
  38   VERIFY( strb_01.str() == str_01 );
  39   VERIFY( strb_02.str() == str_02 );
  40   VERIFY( strb_03.str() == str_03 );
  41
  42   //stringbuf::str(string&)
  43   strb_03.str("none of the above, go to the oberoi in cairo, egypt.");
  44   strb_03.str(str_01);
  45   std::streamsize d1 = strb_01.in_avail();
  46   std::streamsize d2 = strb_03.in_avail();
  47   VERIFY( d1 ); // non-zero
  48   VERIFY( !d2 ); // zero, cuz ios_base::out
  49   VERIFY( d1 != d2 ); //these should be the same
  50   VERIFY( static_cast<std::streamsize>(str_01.length()) == d1 );
  51   VERIFY( strb_01.str() == strb_03.str() ); //ditto
  52
  53   // stringbuf::str(string&) and stringbuf::stringbuf(string&), where the
  54   // string in question contains embedded NUL characters.  Note that in this
  55   // embedded-NUL situation, the size must be passed to the string ctor.
  56   std::string str_nulls ("eschew \0 obfuscation", 20);  // tested in 21_strings
  57   std::stringbuf strb_normal (str_01);
  58   std::stringbuf strb_nulls (str_nulls);
  59   strb_normal.str(str_nulls);  // tried using 'strb_01' rather than declaring
  60                                // another variable, but then test04 broke!
  61   VERIFY( strb_nulls.in_avail() == static_cast<std::streamsize>(str_nulls.size())  );
  62   VERIFY( strb_nulls.str().size() == 20 );
  63   VERIFY( strb_normal.in_avail() == static_cast<std::streamsize>(str_nulls.size()) );
  64 }
  65
  66 int main()
  67 {
  68   test03();
  69   return 0;
  70 }
  71
  72
  73
  74 // more candy!!!