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_ostringstream
15
16// explicit basic_ostringstream(basic_string<char_type, traits_type, allocator_type>&& s, ios_base::openmode which = ios_base::out);
17
18#include <sstream>
19#include <cassert>
20
21#include "make_string.h"
22#include "test_allocator.h"
23#include "test_macros.h"
24#include "operator_hijacker.h"
25
26#define STR(S) MAKE_STRING(CharT, S)
27#define SV(S) MAKE_STRING_VIEW(CharT, S)
28
29template <class CharT, class Allocator>
30static void test() {
31 {
32 std::basic_string<CharT, std::char_traits<CharT>, Allocator> s(STR("testing"));
33 const std::basic_ostringstream<CharT, std::char_traits<CharT>, Allocator> ss(std::move(s));
34 assert(ss.str() == SV("testing"));
35 }
36 {
37 std::basic_string<CharT, std::char_traits<CharT>, Allocator> s(STR("testing"));
38 const std::basic_ostringstream<CharT, std::char_traits<CharT>, Allocator> ss(std::move(s), std::ios_base::binary);
39 assert(ss.str() == SV("testing"));
40 }
41}
42
43int main(int, char**) {
44 test<char, std::allocator<char>>();
45 test<char, test_allocator<char>>();
46 test<char, operator_hijacker_allocator<char>>();
47#ifndef TEST_HAS_NO_WIDE_CHARACTERS
48 test<wchar_t, std::allocator<wchar_t>>();
49 test<wchar_t, test_allocator<wchar_t>>();
50 test<wchar_t, operator_hijacker_allocator<wchar_t>>();
51#endif
52 return 0;
53}
54

source code of libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/string.move.mode.pass.cpp