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

   1 // 1999-09-20 bkoz
   2
   3 // Copyright (C) 1999, 2003 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 c_loc = std::locale::classic();
  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(c_loc);
  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
  62 // 27.4.4.3 basic_ios iostate flags function
  63 void test02()
  64 {
  65   bool test = true;
  66
  67   typedef std::ios_base::fmtflags fmtflags;
  68   typedef std::ios_base::iostate iostate;
  69   using std::ios_base;
  70
  71   iostate iostate02, iostate03;
  72   const iostate iostate01 = std::ios_base::badbit | std::ios_base::eofbit;
  73   const iostate iostate04 = std::ios_base::badbit;
  74
  75   std::ios ios_01(NULL);
  76   std::ios::char_type ct01;
  77   std::ios::char_type ct02('x');;
  78
  79   // bool fail() const
  80   VERIFY( ios_01.fail() );
  81
  82   // bool operator!() const
  83   VERIFY( !ios_01 );
  84
  85   // iostate rdstate() const
  86   iostate03 = ios_01.rdstate();
  87   VERIFY( static_cast<bool>(iostate03 & std::ios_base::badbit) );
  88
  89   // void clear(iostate state = goodbit)
  90   try {
  91     ios_01.clear(std::ios_base::eofbit);
  92     iostate02 = ios_01.rdstate();
  93     VERIFY( static_cast<bool>(iostate02 & iostate01) );
  94   }
  95   catch(std::ios_base::failure& fail) {
  96     VERIFY( false );
  97   }
  98   catch(...) {
  99     VERIFY( false );
 100   }
 101
 102   // iostate exceptions() const
 103   VERIFY( ios_01.exceptions() == std::ios_base::goodbit );
 104
 105   // void exceptions(iostate except)
 106   try {
 107     ios_01.exceptions(std::ios_base::eofbit);
 108     VERIFY( false );
 109   }
 110   catch(std::ios_base::failure& fail) {
 111     iostate02 = ios_01.exceptions();
 112     VERIFY( static_cast<bool>(iostate02 & std::ios_base::eofbit) );
 113   }
 114   catch(...) {
 115     VERIFY( false );
 116   }
 117
 118   // basic_ios& copyfmt(const basic_ios& rhs)
 119   std::ios ios_02(NULL);
 120   ios_02.exceptions(std::ios_base::eofbit);
 121   VERIFY( static_cast<bool>(ios_02.exceptions() & std::ios_base::eofbit) );
 122   try {
 123     ios_01.copyfmt(ios_02);
 124     VERIFY( false );
 125   }
 126   catch(std::ios_base::failure& fail) {
 127     VERIFY( true );
 128   }
 129   catch(...) {
 130     VERIFY( false );
 131   }
 132 }
 133
 134 // copyfmt and locales.
 135 void test03()
 136 {
 137   bool test = true;
 138
 139   using namespace std;
 140
 141   typedef std::ios_base::fmtflags fmtflags;
 142   typedef std::ios_base::iostate iostate;
 143   locale loc_c = locale::classic();
 144   locale loc_de("de_DE");
 145   std::ios ios_01(NULL);
 146   std::ios ios_02(NULL);
 147   ios_01.imbue(loc_c);
 148   ios_02.imbue(loc_de);
 149   ios_02.setstate(ios_base::badbit);
 150   VERIFY( loc_c == ios_01.getloc() );
 151   VERIFY( loc_de == ios_02.getloc() );
 152
 153   iostate ios1 = ios_01.rdstate();
 154   iostate ios2 = ios_02.rdstate();
 155   streambuf* sb1 = ios_01.rdbuf();
 156   streambuf* sb2 = ios_02.rdbuf();
 157   ios_01.copyfmt(ios_02);
 158
 159   VERIFY( loc_de == ios_01.getloc() );
 160   VERIFY( ios_01.getloc() == ios_02.getloc() );
 161   VERIFY( ios1 == ios_01.rdstate() );
 162   VERIFY( ios2 == ios_02.rdstate() );
 163   VERIFY( sb1 == ios_01.rdbuf() );
 164   VERIFY( sb2 == ios_02.rdbuf() );
 165 }
 166
 167 int main()
 168 {
 169   test01();
 170   test02();
 171   test03();
 172   return 0;
 173 }