libstdc++-v3/testsuite/27_io/basic_ostream/sentry/pod/1.cc

   1 // 1999-10-14 bkoz
   2
   3 // Copyright (C) 1999-2018 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 // 27.6.1.1.2 class basic_istream::sentry
  22
  23 #include <ostream>
  24 #include <sstream>
  25 #include <typeinfo>
  26 #include <ext/pod_char_traits.h>
  27 #include <testsuite_hooks.h>
  28 #include <testsuite_character.h>
  29
  30 void test01()
  31 {
  32   using namespace std;
  33   using __gnu_test::pod_ushort;
  34   typedef basic_string<pod_ushort>      string_type;
  35   typedef basic_stringbuf<pod_ushort>   stringbuf_type;
  36   typedef basic_ostream<pod_ushort>     ostream_type;
  37
  38   const string_type str01;
  39   stringbuf_type* strbuf01 = 0;
  40   stringbuf_type strbuf02(str01);
  41   ostream_type ostr01(strbuf01);
  42   ostream_type ostr02(&strbuf02);
  43
  44   // test negatives
  45   try
  46     {
  47       ostream_type::sentry sentry01(ostr01);
  48     }
  49   catch (std::bad_cast& obj)
  50     {
  51       // Not ok, throws bad_cast because locale has no ctype facet,
  52       // but none is needed for ostream::sentry.
  53       VERIFY( false );
  54     }
  55   catch (...)
  56     {
  57       VERIFY( false );
  58     }
  59
  60   // imbued.
  61   const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
  62   ostr01.imbue(loc);
  63   try
  64     {
  65       ostream_type::sentry sentry01(ostr01);
  66       VERIFY( bool(sentry01) == false );
  67     }
  68   catch (...)
  69     {
  70       VERIFY( false );
  71     }
  72
  73   // test positive
  74   try
  75     {
  76       ostream_type::sentry sentry03(ostr02);
  77     }
  78   catch (std::bad_cast& obj)
  79     {
  80       // Not ok, throws bad_cast because locale has no ctype facet,
  81       // but none is needed for ostream::sentry.
  82       VERIFY( false );
  83     }
  84   catch (...)
  85     {
  86       VERIFY( false );
  87     }
  88
  89   // imbued.
  90   ostr02.clear();
  91   ostr02.imbue(loc);
  92   try
  93     {
  94       ostream_type::sentry sentry03(ostr02);
  95       VERIFY( bool(sentry03) == true );
  96     }
  97   catch (...)
  98     {
  99       VERIFY( false );
 100     }
 101 }
 102
 103 #if !__GXX_WEAK__
 104 // Explicitly instantiate for systems with no COMDAT or weak support.
 105 template
 106   const std::basic_string<__gnu_test::pod_ushort>::size_type
 107   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_max_size;
 108
 109 template
 110   const __gnu_test::pod_ushort
 111   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_terminal;
 112 #endif
 113
 114 int main()
 115 {
 116   test01();
 117   return 0;
 118 }