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

   1 // 1999-10-14 bkoz
   2
   3 // Copyright (C) 1999-2016 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 <istream>
  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_istream<pod_ushort>     istream_type;
  37
  38   bool test __attribute__((unused)) = true;
  39
  40
  41   const string_type str01;
  42   stringbuf_type strbuf01;
  43   stringbuf_type strbuf02(str01);
  44   istream_type istr01(&strbuf01);
  45   istream_type istr02(&strbuf02);
  46
  47   // test negatives
  48   try
  49     {
  50       istream_type::sentry sentry01(istr01);
  51     }
  52   catch (std::bad_cast& obj)
  53     {
  54       // Ok, throws bad_cast because locale has no ctype facet.
  55     }
  56   catch (...)
  57     {
  58       VERIFY( false );
  59     }
  60
  61   try
  62     {
  63       istream_type::sentry sentry02(istr01, true);
  64     }
  65   catch (std::bad_cast& obj)
  66     {
  67       // Ok, throws bad_cast because locale has no ctype facet.
  68     }
  69   catch (...)
  70     {
  71       VERIFY( false );
  72     }
  73
  74   // imbued.
  75   const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
  76   istr01.imbue(loc);
  77   try
  78     {
  79       istream_type::sentry sentry01(istr01);
  80       VERIFY( bool(sentry01) == false );
  81     }
  82   catch (...)
  83     {
  84       VERIFY( false );
  85     }
  86
  87   try
  88     {
  89       istream_type::sentry sentry02(istr01, true);
  90       VERIFY( bool(sentry02) == false );
  91     }
  92   catch (...)
  93     {
  94       VERIFY( false );
  95     }
  96
  97   // test positive
  98   try
  99     {
 100       istream_type::sentry sentry03(istr02);
 101     }
 102   catch (std::bad_cast& obj)
 103     {
 104       // Ok, throws bad_cast because locale has no ctype facet.
 105     }
 106   catch (...)
 107     {
 108       VERIFY( false );
 109     }
 110
 111   try
 112     {
 113       istream_type::sentry sentry04(istr02, true);
 114     }
 115   catch (std::bad_cast& obj)
 116     {
 117       // Ok, throws bad_cast because locale has no ctype facet.
 118     }
 119   catch (...)
 120     {
 121       VERIFY( false );
 122     }
 123
 124   // imbued.
 125   istr02.imbue(loc);
 126   try
 127     {
 128       istr02.clear();
 129       istream_type::sentry sentry03(istr02);
 130       // ... as eofbit set.
 131       VERIFY( bool(sentry03) == false );
 132     }
 133   catch (...)
 134     {
 135       VERIFY( false );
 136     }
 137
 138   try
 139     {
 140       istr02.clear();
 141       istream_type::sentry sentry04(istr02, true);
 142       VERIFY( bool(sentry04) == true );
 143     }
 144   catch (...)
 145     {
 146       VERIFY( false );
 147     }
 148 }
 149
 150 #if !__GXX_WEAK__
 151 // Explicitly instantiate for systems with no COMDAT or weak support.
 152 template
 153   const std::basic_string<__gnu_test::pod_ushort>::size_type
 154   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_max_size;
 155
 156 template
 157   const __gnu_test::pod_ushort
 158   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_terminal;
 159 #endif
 160
 161 int main()
 162 {
 163   test01();
 164   return 0;
 165 }