libstdc++-v3/testsuite/27_io/basic_ios/cons/char/1.cc

   1 // 1999-07-23 bkoz
   2
   3 // Copyright (C) 1999-2020 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 // 27.4.4.1 basic_ios constructors
  22
  23 #include <ios>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   std::string str_01("jade cove, big sur");
  30   std::string str_05;
  31   std::stringbuf strb_01;
  32   std::stringbuf strb_02(str_01, std::ios_base::in);
  33   std::stringbuf strb_03(str_01, std::ios_base::out);
  34   const std::ios_base::fmtflags flag01 = std::ios_base::skipws |
  35                                          std::ios_base::dec;
  36   std::ios_base::fmtflags flag02;
  37   const std::locale glocale = std::locale();
  38
  39   // explicit basic_ios(streambuf* sb)
  40   std::ios ios_00(0);
  41   std::ios ios_01(&strb_01);
  42   std::ios ios_02(&strb_02);
  43   std::ios ios_03(&strb_03);
  44
  45   // basic_ios()
  46   // NB: This is protected so need to go through fstream
  47
  48   // void init(sreambuf* sb)
  49   // NB: This is protected so need to go through fstream/stringstream
  50   // Can double-check the accuracy of the above initializations though.
  51   VERIFY( ios_00.rdbuf() == 0 );
  52   VERIFY( ios_00.tie() == 0 );
  53   VERIFY( ios_00.rdstate() == std::ios_base::badbit );
  54   VERIFY( ios_00.exceptions() == std::ios_base::goodbit );
  55   flag02 = ios_00.flags();
  56   VERIFY( flag02 == flag01 );
  57   VERIFY( ios_00.width() == 0 );
  58   VERIFY( ios_00.precision() == 6 );
  59   VERIFY( ios_00.fill() == ios_00.widen(' ') );
  60   VERIFY( ios_00.getloc() == glocale );
  61
  62   VERIFY( ios_01.rdbuf() == &strb_01 );
  63   VERIFY( ios_01.tie() == 0 );
  64   VERIFY( ios_01.rdstate() == std::ios_base::goodbit );
  65   VERIFY( ios_01.exceptions() == std::ios_base::goodbit );
  66   flag02 = ios_01.flags();
  67   VERIFY( flag02 == flag01 );
  68   VERIFY( ios_01.width() == 0 );
  69   VERIFY( ios_01.precision() == 6 );
  70   VERIFY( ios_01.fill() == ios_01.widen(' ') );
  71   VERIFY( ios_01.getloc() == glocale );
  72 }
  73
  74 int main()
  75 {
  76   test01();
  77   return 0;
  78 }