libstdc++-v3/testsuite/21_strings/basic_string/cons/wchar_t/6.cc

   1 // 2004-01-30  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004-2023 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 // 21.3.1 basic_string constructors.
  21
  22 // { dg-options "-DITERATIONS=11" { target simulator } }
  23
  24 #ifndef ITERATIONS
  25 #define ITERATIONS 13
  26 #endif
  27
  28 #include <iterator>
  29 #include <sstream>
  30 #include <cstdlib>
  31 #include <testsuite_hooks.h>
  32
  33 using namespace std;
  34
  35 wstring data(long len)
  36 {
  37   wstring ret;
  38   for (long i = 0; i < len; ++i)
  39     ret.push_back(L'a' + rand() % 26);
  40   return ret;
  41 }
  42
  43 void test01(int iter)
  44 {
  45   for (long i = 0, j = 1; i < iter; ++i, j *= 3)
  46     {
  47       wistringstream isstr(data(j));
  48
  49       wstring str((istreambuf_iterator<wchar_t>(isstr)),
  50                   istreambuf_iterator<wchar_t>());
  51       VERIFY( str == isstr.str() );
  52     }
  53 }
  54
  55 int main()
  56 {
  57   test01(ITERATIONS);
  58   return 0;
  59 }