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// bool emit();
19
20#include <syncstream>
21#include <cassert>
22
23#include "../helpers.h"
24#include "test_macros.h"
25
26template <class CharT>
27void test() {
28 // We do this because we want to be able to use CharT
29 CharT arr[3] = {'a', 'b', 'c'};
30 CharT* ptr = arr;
31
32 test_buf<CharT> base;
33 const std::allocator<CharT> alloc;
34 test_syncbuf<CharT> buff(&base, alloc);
35
36 buff._setp(ptr, ptr + 3);
37 assert(base._pptr() == nullptr);
38 buff.emit();
39 CharT* pptr = base._pptr();
40 while (pptr) {
41 assert(*pptr++ == *ptr++);
42 }
43}
44
45int main(int, char**) {
46 test<char>();
47#ifndef TEST_HAS_NO_WIDE_CHARACTERS
48 test<wchar_t>();
49#endif
50
51 return 0;
52}
53

source code of libcxx/test/std/input.output/syncstream/syncbuf/syncstream.syncbuf.members/emit.pass.cpp