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

   1 // Copyright (C) 2015-2024 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 // { dg-add-options no_pch }
  20
  21 #include <experimental/iterator>
  22
  23 #ifndef __cpp_lib_experimental_ostream_joiner
  24 # error Feature-test macro is not defined.
  25 #elif __cpp_lib_experimental_ostream_joiner < 201411
  26 # error Feature-test macro has bad value.
  27 #endif
  28
  29 #include <sstream>
  30 #include <testsuite_hooks.h>
  31
  32 using std::experimental::ostream_joiner;
  33
  34 void
  35 test01()
  36 {
  37   std::ostringstream os;
  38   ostream_joiner<int> joiner{os, 9};
  39   for (int i : { 1, 2, 3, 4, 5 })
  40     *joiner++ = i;
  41   VERIFY( os.str() == "192939495" );
  42 }
  43
  44 void
  45 test02()
  46 {
  47   std::ostringstream os;
  48   ostream_joiner<char> joiner{os, ','};
  49   for (int i : { 1, 2, 3, 4, 5 })
  50   {
  51     *joiner = i;
  52     ++joiner;
  53   }
  54   VERIFY( os.str() == "1,2,3,4,5" );
  55 }
  56
  57 void
  58 test03()
  59 {
  60 #if _GLIBCXX_USE_WCHAR_T
  61   std::wostringstream os;
  62   ostream_joiner<wchar_t, wchar_t> joiner{os, L','};
  63   for (int i : { 1, 2, 3, 4, 5 })
  64     *joiner++ = i;
  65   VERIFY( os.str() == L"1,2,3,4,5" );
  66 #endif
  67 }
  68
  69 int
  70 main()
  71 {
  72   test01();
  73   test02();
  74   test03();
  75 }