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

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == wchar_t
   2
   3 // Copyright (C) 1997-2021 Free Software Foundation, Inc.
   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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <sstream>
  21 #include <testsuite_hooks.h>
  22
  23 std::wstring str_01(L"mykonos. . . or what?");
  24 std::wstring str_02(L"paris, or sainte-maxime?");
  25 std::wstring str_03;
  26 std::wstringbuf strb_01(str_01);
  27 std::wstringbuf strb_02(str_02, std::ios_base::in);
  28 std::wstringbuf strb_03(str_03, std::ios_base::out);
  29
  30 // test member functions
  31 void test03()
  32 {
  33   // stringbuf::str()
  34   VERIFY( strb_01.str() == str_01 );
  35   VERIFY( strb_02.str() == str_02 );
  36   VERIFY( strb_03.str() == str_03 );
  37
  38   // stringbuf::str(string&)
  39   strb_03.str(L"none of the above, go to the oberoi in cairo, egypt.");
  40   strb_03.str(str_01);
  41   std::streamsize d1 = strb_01.in_avail();
  42   std::streamsize d2 = strb_03.in_avail();
  43   VERIFY( d1 ); // non-zero
  44   VERIFY( d2 == -1 ); // -1, cuz ios_base::out
  45   VERIFY( d1 != d2 ); //these should be the same
  46   VERIFY( static_cast<std::streamsize>(str_01.length()) == d1 );
  47   VERIFY( strb_01.str() == strb_03.str() ); //ditto
  48
  49   // stringbuf::str(string&) and stringbuf::stringbuf(string&), where the
  50   // string in question contains embedded NUL characters.  Note that in this
  51   // embedded-NUL situation, the size must be passed to the string ctor.
  52   std::wstring str_nulls(L"eschew \0 obfuscation", 20);  // tested in 21_strings
  53   std::wstringbuf strb_normal(str_01);
  54   std::wstringbuf strb_nulls(str_nulls);
  55   strb_normal.str(str_nulls);  // tried using 'strb_01' rather than declaring
  56                                // another variable, but then test04 broke!
  57   VERIFY( strb_nulls.in_avail() == static_cast<std::streamsize>(str_nulls.size())  );
  58   VERIFY( strb_nulls.str().size() == 20 );
  59   VERIFY( strb_normal.in_avail() == static_cast<std::streamsize>(str_nulls.size()) );
  60 }
  61
  62 int main()
  63 {
  64   test03();
  65   return 0;
  66 }
  67
  68
  69
  70 // more candy!!!