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// basic_syncbuf(basic_syncbuf&& other);
19
20#include <syncstream>
21#include <cassert>
22
23#include "test_macros.h"
24#include "constexpr_char_traits.h"
25#include "test_allocator.h"
26
27template <class CharT>
28void test() {
29 {
30 using Buf = std::basic_syncbuf<CharT>;
31 const std::allocator<CharT> alloc;
32 {
33 Buf b1{nullptr, alloc};
34 Buf b2{std::move(b1)};
35
36 assert(b2.get_wrapped() == nullptr);
37 assert(b2.get_allocator() == alloc);
38 }
39 {
40 Buf w;
41#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
42 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
43#endif
44 {
45 Buf b1{&w, alloc};
46#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
47 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
48#endif
49 Buf b2{std::move(b1)};
50#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
51 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
52#endif
53 assert(b2.get_wrapped() == &w);
54 assert(b2.get_allocator() == alloc);
55 }
56#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
57 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
58#endif
59 }
60 }
61
62 {
63 using Buf = std::basic_syncbuf<CharT, constexpr_char_traits<CharT>>;
64 const std::allocator<CharT> alloc;
65 {
66 Buf b1{nullptr, alloc};
67 Buf b2{std::move(b1)};
68
69 assert(b2.get_wrapped() == nullptr);
70 assert(b2.get_allocator() == alloc);
71 }
72 {
73 Buf w;
74#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
75 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
76#endif
77 {
78 Buf b1{&w, alloc};
79#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
80 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
81#endif
82 Buf b2{std::move(b1)};
83#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
84 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
85#endif
86 assert(b2.get_wrapped() == &w);
87 assert(b2.get_allocator() == alloc);
88 }
89#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
90 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
91#endif
92 }
93 }
94
95 {
96 using Buf = std::basic_syncbuf<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;
97 test_allocator<CharT> alloc{42};
98 {
99 Buf b1{nullptr, alloc};
100 Buf b2{std::move(b1)};
101
102 assert(b2.get_wrapped() == nullptr);
103 assert(b2.get_allocator() == alloc);
104 }
105 {
106 Buf w;
107#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
108 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
109#endif
110 {
111 Buf b1{&w, alloc};
112#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
113 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
114#endif
115 Buf b2{std::move(b1)};
116#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
117 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
118#endif
119 assert(b2.get_wrapped() == &w);
120 assert(b2.get_allocator() == alloc);
121 }
122#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
123 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
124#endif
125 }
126 }
127}
128
129int main(int, char**) {
130 test<char>();
131#ifndef TEST_HAS_NO_WIDE_CHARACTERS
132 test<wchar_t>();
133#endif
134
135 return 0;
136}
137

source code of libcxx/test/std/input.output/syncstream/syncbuf/syncstream.syncbuf.cons/cons.move.pass.cpp