libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <locale>
  10
  11 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
  12
  13 // wbuffer_convert<Codecvt, Elem, Tr>
  14
  15 // XFAIL: no-wide-characters
  16
  17 #include <cassert>
  18 #include <codecvt>
  19 #include <locale>
  20 #include <sstream>
  21
  22 int main(int, char**) {
  23     std::string storage;
  24     {
  25         std::ostringstream bytestream;
  26         std::wbuffer_convert<std::codecvt_utf8<wchar_t> > mybuf(bytestream.rdbuf());
  27         std::wostream mystr(&mybuf);
  28         mystr << L"Hello" << std::endl;
  29         storage = bytestream.str();
  30     }
  31     {
  32         std::istringstream bytestream(storage);
  33         std::wbuffer_convert<std::codecvt_utf8<wchar_t> > mybuf(bytestream.rdbuf());
  34         std::wistream mystr(&mybuf);
  35         std::wstring ws;
  36         mystr >> ws;
  37         assert(ws == L"Hello");
  38     }
  39
  40     return 0;
  41 }