libstdc++-v3/testsuite/27_io/basic_istream/sentry/wchar_t/1.cc

   1 // Copyright (C) 2004-2024 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
  19 // 27.6.1.1.2 class basic_istream::sentry
  20
  21 #include <istream>
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 void test01()
  26 {
  27   const wchar_t* lit01 = L"stereolab on the bolsinga tip";
  28   const std::wstring str01(lit01);
  29
  30   std::wstringbuf strbuf01;
  31   std::wstringbuf strbuf02(str01);
  32   std::wistream istr01(&strbuf01);
  33   std::wistream istr02(&strbuf02);
  34
  35   // test negatives
  36   std::wistream::sentry sentry01(istr01);
  37   VERIFY( bool(sentry01) == false );
  38
  39   std::wistream::sentry sentry02(istr01, true);
  40   VERIFY( bool(sentry02) == false );
  41
  42   // positive tests
  43   std::wistream::sentry sentry03(istr02);
  44   VERIFY( bool(sentry03) == true );
  45
  46   std::wistream::sentry sentry04(istr02, true);
  47   VERIFY( bool(sentry04) == true );
  48 }
  49
  50 int main()
  51 {
  52   test01();
  53   return 0;
  54 }