libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/mode.alloc.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 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // <sstream>
  12
  13 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>>
  14 // class basic_stringbuf
  15
  16 // basic_stringbuf(ios_base::openmode which, const Allocator& a);
  17
  18 #include <sstream>
  19 #include <cassert>
  20
  21 #include "test_allocator.h"
  22 #include "test_macros.h"
  23
  24 template <class CharT>
  25 static void test() {
  26   const test_allocator<CharT> a(2);
  27   const std::basic_stringbuf<CharT, std::char_traits<CharT>, test_allocator<CharT>> buf(std::ios_base::in, a);
  28   assert(buf.get_allocator() == a);
  29   assert(buf.view().empty());
  30 }
  31
  32 int main(int, char**) {
  33   test<char>();
  34 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  35   test<wchar_t>();
  36 #endif
  37   return 0;
  38 }