libstdc++-v3/testsuite/27_io/basic_ostream/ends/wchar_t/2.cc

   1 // Copyright (C) 2005-2020 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 // 27.6.2.7 standard basic_ostream manipulators
  19
  20 #include <ostream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 // based vaguely on this:
  25 // http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00109.html
  26 void test02()
  27 {
  28   using namespace std;
  29   typedef wostringstream::int_type int_type;
  30
  31   wostringstream osst_01;
  32   const wstring str_00(L"herbie_hancock");
  33   int_type len1 = str_00.size();
  34   osst_01 << str_00;
  35   VERIFY( static_cast<int_type>(osst_01.str().size()) == len1 );
  36
  37   osst_01 << ends;
  38
  39   const wstring str_01(L"speak like a child");
  40   int_type len2 = str_01.size();
  41   osst_01 << str_01;
  42   int_type len3 = osst_01.str().size();
  43   VERIFY( len1 < len3 );
  44   VERIFY( len3 == len1 + len2 + 1 );
  45
  46   osst_01 << ends;
  47
  48   const wstring str_02(L"+ inventions and dimensions");
  49   int_type len4 = str_02.size();
  50   osst_01 << str_02;
  51   int_type len5 = osst_01.str().size();
  52   VERIFY( len3 < len5 );
  53   VERIFY( len5 == len3 + len4 + 1 );
  54 }
  55
  56 int main()
  57 {
  58   test02();
  59   return 0;
  60 }