libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/1.cc

   1 // Copyright (C) 2004-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 27.6.1.3 unformatted input functions
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test02()
  26 {
  27   typedef std::char_traits<wchar_t>     traits_type;
  28
  29   const wchar_t str_lit01[] = L"\t\t\t    sun*ra \n"
  30   L"                            "
  31   L"and his myth science arkestra present\n"
  32   L"                            "
  33   L"angles and demons @ play\n"
  34   L"                            "
  35   L"the nubians of plutonia";
  36   std::wstring str01(str_lit01);
  37   std::wstring strtmp;
  38
  39   std::wstringbuf sbuf_04(str01, std::ios_base::in);
  40
  41   std::wistream is_00(0);
  42   std::wistream is_04(&sbuf_04);
  43   std::ios_base::iostate state1, state2, statefail, stateeof;
  44   statefail = std::ios_base::failbit;
  45   stateeof = std::ios_base::eofbit;
  46   wchar_t carray1[400] = L"";
  47
  48   // istream& getline(wchar_t* s, streamsize n, wchar_t delim)
  49   // istream& getline(wchar_t* s, streamsize n)
  50   state1 = is_00.rdstate();
  51   is_00.getline(carray1, 20, L'*');
  52   state2 = is_00.rdstate();
  53   // make sure failbit was set, since we couldn't extract
  54   // from the null streambuf...
  55   VERIFY( state1 != state2 );
  56   VERIFY( static_cast<bool>(state2 & statefail) );
  57
  58   VERIFY( is_04.gcount() == 0 );
  59   state1 = is_04.rdstate();
  60   is_04.getline(carray1, 1, L'\t'); // extracts, throws away
  61   state2 = is_04.rdstate();
  62   VERIFY( is_04.gcount() == 1 );
  63   VERIFY( state1 == state2 );
  64   VERIFY( state1 == 0 );
  65   VERIFY( !traits_type::compare(L"", carray1, 1) );
  66
  67   state1 = is_04.rdstate();
  68   is_04.getline(carray1, 20, L'*');
  69   state2 = is_04.rdstate();
  70   VERIFY( is_04.gcount() == 10 );
  71   VERIFY( state1 == state2 );
  72   VERIFY( state1 == 0 );
  73   VERIFY( !traits_type::compare(L"\t\t    sun", carray1, 10) );
  74
  75   state1 = is_04.rdstate();
  76   is_04.getline(carray1, 20);
  77   state2 = is_04.rdstate();
  78   VERIFY( is_04.gcount() == 4 );
  79   VERIFY( state1 == state2 );
  80   VERIFY( state1 == 0 );
  81   VERIFY( !traits_type::compare(L"ra ", carray1, 4) );
  82
  83   state1 = is_04.rdstate();
  84   is_04.getline(carray1, 65);
  85   state2 = is_04.rdstate();
  86   VERIFY( is_04.gcount() == 64 );
  87   VERIFY( state1 != state2 );
  88   VERIFY( state2 == statefail );
  89   VERIFY( !traits_type::compare(
  90   L"                            and his myth science arkestra presen",
  91                                 carray1, 65) );
  92
  93   is_04.clear();
  94   state1 = is_04.rdstate();
  95   is_04.getline(carray1, 120, L'|');
  96   state2 = is_04.rdstate();
  97   VERIFY( is_04.gcount() == 106 );
  98   VERIFY( state1 != state2 );
  99   VERIFY( state2 == stateeof );
 100
 101   is_04.clear();
 102   state1 = is_04.rdstate();
 103   is_04.getline(carray1, 100, L'|');
 104   state2 = is_04.rdstate();
 105   VERIFY( is_04.gcount() == 0 );
 106   VERIFY( state1 != state2 );
 107   VERIFY( static_cast<bool>(state2 & stateeof) );
 108   VERIFY( static_cast<bool>(state2 & statefail) );
 109 }
 110
 111 int
 112 main()
 113 {
 114   test02();
 115   return 0;
 116 }