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 // UNSUPPORTED: no-localization
11 // UNSUPPORTED: libcpp-has-no-experimental-syncstream
12 
13 // <syncstream>
14 
15 // template <class charT, class traits, class Allocator>
16 // class basic_syncbuf;
17 
18 // streambuf_type* get_wrapped() const noexcept;
19 
20 #include <syncstream>
21 #include <concepts>
22 #include <cassert>
23 
24 #include "../helpers.h"
25 #include "test_macros.h"
26 
27 template <class T>
test()28 void test() {
29   test_buf<T> base(42);
30   const std::allocator<T> alloc;
31   const test_syncbuf<T> buff(&base, alloc);
32   std::same_as<std::basic_streambuf<T>*> auto wrapped = buff.get_wrapped();
33   assert(static_cast<test_buf<T>*>(wrapped)->id == 42);
34   ASSERT_NOEXCEPT(buff.get_wrapped());
35 }
36 
main(int,char **)37 int main(int, char**) {
38   test<char>();
39 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
40   test<wchar_t>();
41 #endif
42 
43   return 0;
44 }
45