libstdc++-v3/testsuite/27_io/ios_members.cc

   1 // 1999-09-20 bkoz
   2
   3 // Copyright (C) 1999 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // 27.4.4.2 basic_ios member functions
  31
  32 #include <ios>
  33 // NB: Don't include any other headers in this file.
  34 #include <testsuite_hooks.h>
  35
  36 void test01()
  37 {
  38   bool test = true;
  39
  40   std::ios_base::fmtflags flag02, flag03;
  41   const std::ios_base::fmtflags flag01 = std::ios_base::skipws
  42                                          | std::ios_base::dec;
  43
  44   const std::locale glocale = std::locale();
  45
  46   std::ios ios_01(NULL);
  47   std::ios::char_type ct01;
  48   std::ios::char_type ct02('x');;
  49
  50   // 27.4.2.3 locales
  51   ios_01.imbue(glocale);
  52
  53   // char narrow(char_type c, char dfault) const;
  54   char c1 = ios_01.narrow(ct02, 0);
  55   VERIFY( c1 == 'x' );
  56
  57   // char_type widen(char c) const;
  58   ct01 = ios_01.widen('c');
  59   VERIFY( ct01 == 'c' );
  60
  61 #ifdef DEBUG_ASSERT
  62   assert(test);
  63 #endif
  64 }
  65
  66 // 27.4.4.3 basic_ios iostate flags function
  67 void test02()
  68 {
  69   bool test = true;
  70
  71   typedef std::ios_base::fmtflags fmtflags;
  72   typedef std::ios_base::iostate iostate;
  73   using std::ios_base;
  74
  75   iostate iostate02, iostate03;
  76   const iostate iostate01 = std::ios_base::badbit | std::ios_base::eofbit;
  77   const iostate iostate04 = std::ios_base::badbit;
  78
  79   const std::locale glocale = std::locale();
  80
  81   std::ios ios_01(NULL);
  82   std::ios::char_type ct01;
  83   std::ios::char_type ct02('x');;
  84
  85   // bool fail() const
  86   VERIFY( ios_01.fail() );
  87
  88   // bool operator!() const
  89   VERIFY( !ios_01 );
  90
  91   // iostate rdstate() const
  92   iostate03 = ios_01.rdstate();
  93   VERIFY( static_cast<bool>(iostate03 & std::ios_base::badbit) );
  94
  95   // void clear(iostate state = goodbit)
  96   try {
  97     ios_01.clear(std::ios_base::eofbit);
  98     iostate02 = ios_01.rdstate();
  99     VERIFY( static_cast<bool>(iostate02 & iostate01) );
 100   }
 101   catch(std::ios_base::failure& fail) {
 102     VERIFY( false );
 103   }
 104   catch(...) {
 105     VERIFY( false );
 106   }
 107
 108   // iostate exceptions() const
 109   VERIFY( ios_01.exceptions() == std::ios_base::goodbit );
 110
 111   // void exceptions(iostate except)
 112   try {
 113     ios_01.exceptions(std::ios_base::eofbit);
 114     VERIFY( false );
 115   }
 116   catch(std::ios_base::failure& fail) {
 117     iostate02 = ios_01.exceptions();
 118     VERIFY( static_cast<bool>(iostate02 & std::ios_base::eofbit) );
 119   }
 120   catch(...) {
 121     VERIFY( false );
 122   }
 123
 124   // basic_ios& copyfmt(const basic_ios& rhs)
 125   std::ios ios_02(NULL);
 126   ios_02.exceptions(std::ios_base::eofbit);
 127   VERIFY( static_cast<bool>(ios_02.exceptions() & std::ios_base::eofbit) );
 128   try {
 129     ios_01.copyfmt(ios_02);
 130     VERIFY( false );
 131   }
 132   catch(std::ios_base::failure& fail) {
 133     VERIFY( true );
 134   }
 135   catch(...) {
 136     VERIFY( false );
 137   }
 138
 139 #ifdef DEBUG_ASSERT
 140   assert(test);
 141 #endif
 142 }
 143
 144 int main() {
 145   test01();
 146   test02();
 147   return 0;
 148 }