libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/13.cc

   1 // Copyright (C) 2020-2024 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 // { dg-do run }
  19
  20 #include <string>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   const std::wstring str = L"1234";
  28   std::wistringstream in(str);
  29   std::wstring buf;
  30   in.width(4);
  31   in >> buf;
  32   VERIFY( !in.eof() ); // should stop after reading 4 chars
  33   VERIFY( buf == str );
  34 }
  35
  36 struct WT : std::char_traits<wchar_t> { };
  37
  38 void
  39 test02()
  40 {
  41   const std::basic_string<wchar_t, WT> str = L"1234";
  42   std::basic_istringstream<wchar_t, WT> in(str);
  43   std::basic_string<wchar_t, WT> buf;
  44   in.width(4);
  45   in >> buf;
  46   VERIFY( !in.eof() ); // should stop after reading 4 chars
  47   VERIFY( buf == str );
  48 }
  49
  50 int
  51 main()
  52 {
  53   test01();
  54   test02();
  55 }