libstdc++-v3/testsuite/27_io/basic_stringbuf/sgetn/wchar_t/1.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == wchar_t
   2
   3 // Copyright (C) 1997-2014 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 #include <sstream>
  21 #include <testsuite_hooks.h>
  22
  23 std::wstring str_01(L"mykonos. . . or what?");
  24 std::wstring str_02(L"paris, or sainte-maxime?");
  25 std::wstring str_03;
  26 std::wstringbuf strb_01(str_01);
  27 std::wstringbuf strb_02(str_02, std::ios_base::in);
  28 std::wstringbuf strb_03(str_03, std::ios_base::out);
  29
  30 // test overloaded virtual functions
  31 void test04()
  32 {
  33   bool test __attribute__((unused)) = true;
  34   std::streamsize               strmsz_1, strmsz_2;
  35   typedef std::wstringbuf::int_type int_type;
  36   typedef std::wstringbuf::traits_type traits_type;
  37
  38   // GET
  39   strb_01.in_avail();
  40   strb_02.in_avail();
  41   strb_03.in_avail();
  42
  43   int_type c1 = strb_01.sbumpc();
  44   int_type c2 = strb_02.sbumpc();
  45   strb_01.sbumpc();
  46   int_type c4 = strb_02.sbumpc();
  47   strb_03.sbumpc();
  48
  49   // int_type sgetc()
  50   // if read_cur not avail, return uflow(), else return *read_cur
  51   int_type c6 = strb_01.sgetc();
  52   int_type c7 = strb_02.sgetc();
  53   strb_01.sgetc();
  54   strb_02.sgetc();
  55   strb_03.sgetc();
  56
  57   // int_type snextc()
  58   // calls sbumpc and if sbumpc != eof, return sgetc
  59   c6 = strb_01.snextc();
  60   c7 = strb_02.snextc();
  61   strb_03.snextc();
  62
  63   // streamsize sgetn(char_type *s, streamsize n)
  64   // streamsize xsgetn(char_type *s, streamsize n)
  65   // assign up to n chars to s from input sequence, indexing in_cur as
  66   // approp and returning the number of chars assigned
  67   strmsz_1 = strb_01.in_avail();
  68   strmsz_2 = strb_02.in_avail();
  69   test = strmsz_1 != strmsz_2;
  70   VERIFY( strmsz_1 != static_cast<std::streamsize>(str_01.length()) );
  71   // because now we've moved into string
  72   VERIFY( strmsz_2 != static_cast<std::streamsize>(str_02.length()) );
  73   wchar_t carray1[11] = L"";
  74   strmsz_1 = strb_01.sgetn(carray1, 10);
  75   wchar_t carray2[20] = L"";
  76   strmsz_2 = strb_02.sgetn(carray2, 10);
  77   VERIFY( strmsz_1 == strmsz_2 );
  78   VERIFY( strmsz_1 == 10 );
  79   c1 = strb_01.sgetc();
  80   c2 = strb_02.sgetc();
  81   VERIFY( c6 == c1 ); //just by co-incidence both o's
  82   VERIFY( c7 != c2 ); // n != i
  83   VERIFY( c1 == traits_type::to_int_type(str_01[13]) );
  84   VERIFY( c2 == traits_type::to_int_type(str_02[13]) ); //should equal fourteenth letter at this point
  85   strmsz_1 = strb_03.sgetn(carray1, 10);
  86   VERIFY( !strmsz_1 ); //zero
  87   strmsz_1 = strb_02.in_avail();
  88   strmsz_2 = strb_02.sgetn(carray2, strmsz_1 + 5);
  89   VERIFY( strmsz_1 == strmsz_2 ); //write off the end
  90   c4 = strb_02.sgetc(); // should be EOF
  91   VERIFY( c4 == traits_type::eof() );
  92 }
  93
  94 int main()
  95 {
  96   test04();
  97   return 0;
  98 }
  99
 100
 101
 102 // more candy!!!