libstdc++-v3/testsuite/22_locale/num_put/put/char/9.cc

   1 // 2004-08-22  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004-2020 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 // 22.2.2.2.1  num_put members
  21
  22 #include <locale>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 // According to 22.2.2.2.2, p23 and the resolution of DR 359
  27 // val must be casted to a signed type: this can be revealed
  28 // by ios_base::showpos, which is effective only for signed
  29 // types (also see libstdc++/15565 about this).
  30 void test01()
  31 {
  32   using namespace std;
  33
  34   // basic construction
  35   locale loc_c = locale::classic();
  36
  37   // sanity check the data is correct.
  38   const string empty;
  39
  40   // cache the num_put facet
  41   ostringstream oss;
  42   oss.imbue(loc_c);
  43   const num_put<char>& np = use_facet<num_put<char> >(oss.getloc());
  44
  45   bool b = true;
  46   np.put(oss.rdbuf(), oss, ' ', b);
  47   VERIFY( oss.str() == "1" );
  48
  49   oss.str(empty);
  50   oss.clear();
  51   oss.setf(ios_base::showpos);
  52   np.put(oss.rdbuf(), oss, ' ', b);
  53   VERIFY( oss.str() == "+1" );
  54 }
  55
  56 int main()
  57 {
  58   test01();
  59   return 0;
  60 }