libstdc++-v3/testsuite/experimental/iterator/ostream_joiner.cc

   1 // Copyright (C) 2015-2020 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 // { dg-do run { target c++14 } }
  19
  20 #include <experimental/iterator>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 #ifndef __cpp_lib_experimental_ostream_joiner
  25 # error Feature-test macro is not defined.
  26 #elif __cpp_lib_experimental_ostream_joiner < 201411
  27 # error Feature-test macro has bad value.
  28 #endif
  29
  30 using std::experimental::ostream_joiner;
  31
  32 void
  33 test01()
  34 {
  35   std::ostringstream os;
  36   ostream_joiner<int> joiner{os, 9};
  37   for (int i : { 1, 2, 3, 4, 5 })
  38     *joiner++ = i;
  39   VERIFY( os.str() == "192939495" );
  40 }
  41
  42 void
  43 test02()
  44 {
  45   std::ostringstream os;
  46   ostream_joiner<char> joiner{os, ','};
  47   for (int i : { 1, 2, 3, 4, 5 })
  48   {
  49     *joiner = i;
  50     ++joiner;
  51   }
  52   VERIFY( os.str() == "1,2,3,4,5" );
  53 }
  54
  55 void
  56 test03()
  57 {
  58 #if _GLIBCXX_USE_WCHAR_T
  59   std::wostringstream os;
  60   ostream_joiner<wchar_t, wchar_t> joiner{os, L','};
  61   for (int i : { 1, 2, 3, 4, 5 })
  62     *joiner++ = i;
  63   VERIFY( os.str() == L"1,2,3,4,5" );
  64 #endif
  65 }
  66
  67 int
  68 main()
  69 {
  70   test01();
  71   test02();
  72   test03();
  73 }