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

   1 // 1999-07-22 bkoz
   2
   3 // Copyright (C) 1994, 1999, 2000 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 // 27.6.2.7 standard basic_ostream manipulators
  22
  23 #include <ostream>
  24 #include <sstream>
  25 #include <stdexcept>
  26 #include <debug_assert.h>
  27
  28 bool test01(void)
  29 {
  30   bool test = true;
  31
  32   const char str_lit01[] = "  venice ";
  33   const std::string str01(" santa barbara ");
  34   std::string str02(str_lit01);
  35   std::string str04;
  36   std::string str05;
  37   std::ios_base::iostate flag1, flag2, flag3, flag4, flag5;
  38
  39   // template<_CharT, _Traits>
  40   //  basic_ostream<_CharT, _Traits>& endl(basic_ostream<_Char, _Traits>& os)
  41   std::ostringstream oss01(str01);
  42   std::ostringstream oss02;
  43   std::ostringstream::int_type i01, i02;
  44   typedef std::ostringstream::traits_type traits_type;
  45
  46   oss01 << std::endl;
  47   str04 = oss01.str();
  48   VERIFY( str04.size() == str01.size() );
  49
  50   oss02 << std::endl;
  51   str05 = oss02.str();
  52   VERIFY( str05.size() == 1 );
  53
  54   // template<_CharT, _Traits>
  55   //  basic_ostream<_CharT, _Traits>& ends(basic_ostream<_Char, _Traits>& os)
  56   oss01 << std::ends;
  57   str04 = oss01.str();
  58   VERIFY( str04.size() == str01.size() );
  59   VERIFY( str04[1] == char() );
  60
  61   oss02 << std::ends;
  62   str05 = oss02.str();
  63   VERIFY( str05.size() == 2 );
  64   VERIFY( str05[1] == char() );
  65
  66   // template<_CharT, _Traits>
  67   //  basic_ostream<_CharT, _Traits>& flush(basic_ostream<_Char, _Traits>& os)
  68   oss01.flush();
  69   str04 = oss01.str();
  70   VERIFY( str04.size() == str01.size() );
  71
  72   oss02.flush();
  73   str05 = oss02.str();
  74   VERIFY( str05.size() == 2 );
  75
  76 #ifdef DEBUG_ASSERT
  77   assert(test);
  78 #endif
  79   return test;
  80 }
  81
  82
  83 // based vaguely on this:
  84 // http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00109.html
  85 bool test02()
  86 {
  87   using namespace std;
  88   typedef ostringstream::int_type int_type;
  89
  90   bool test = true;
  91   ostringstream osst_01;
  92   const string str_00("herbie_hancock");
  93   int_type len1 = str_00.size();
  94   osst_01 << str_00;
  95   VERIFY( osst_01.str().size() == len1 );
  96
  97   osst_01 << ends;
  98
  99   const string str_01("speak like a child");
 100   int_type len2 = str_01.size();
 101   osst_01 << str_01;
 102   int_type len3 = osst_01.str().size();
 103   VERIFY( len1 < len3 );
 104   VERIFY( len3 == len1 + len2 + 1 );
 105
 106   osst_01 << ends;
 107
 108   const string str_02("+ inventions and dimensions");
 109   int_type len4 = str_02.size();
 110   osst_01 << str_02;
 111   int_type len5 = osst_01.str().size();
 112   VERIFY( len3 < len5 );
 113   VERIFY( len5 == len3 + len4 + 1 );
 114
 115 #ifdef DEBUG_ASSERT
 116   assert(test);
 117 #endif
 118   return test;
 119 }
 120
 121 int main()
 122 {
 123   test01();
 124 }
 125
 126
 127
 128
 129