libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/3.cc

   1 // Copyright (C) 2004-2021 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 <cwchar> // for wcslen
  21 #include <istream>
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 // [bug] istream::getline(char*,streamsize) still broken
  26 // http://gcc.gnu.org/ml/libstdc++/2000-07/msg00126.html
  27 // brent verner <brent at rcfile dot org
  28 void
  29 test06()
  30 {
  31   using namespace std;
  32
  33   const streamsize it = 5;
  34   wchar_t tmp[it];
  35   const wchar_t* str_lit = L"abcd\n";
  36
  37   wstringbuf strbuf(str_lit, std::ios_base::in);
  38   wistream istr(&strbuf);
  39
  40   istr.getline(tmp,it);
  41   VERIFY( istr.gcount() == it );  // extracted whole string
  42   VERIFY( wcslen(tmp) == 4 );     // stored all but '\n'
  43   VERIFY( !istr.eof() );          // extracted up to but not eof
  44   VERIFY( !istr.fail() );         // failbit not set
  45
  46   wchar_t c = L'z';
  47   istr.get(c);
  48   VERIFY( c == L'z' );
  49   VERIFY( istr.eof() );
  50 }
  51
  52 int
  53 main()
  54 {
  55   test06();
  56   return 0;
  57 }