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_stringstream
15 
16 // explicit basic_stringstream(basic_string<char_type, traits_type, allocator_type>&& s, ios_base::openmode which = ios_base::out | ios_base::in);
17 
18 #include <sstream>
19 #include <cassert>
20 
21 #include "make_string.h"
22 #include "test_macros.h"
23 #include "operator_hijacker.h"
24 
25 #define STR(S) MAKE_STRING(CharT, S)
26 #define SV(S) MAKE_STRING_VIEW(CharT, S)
27 
28 template <class CharT>
29 static void test() {
30   {
31     std::basic_string<CharT> s(STR("testing"));
32     const std::basic_stringstream<CharT> ss(std::move(s));
33     assert(ss.str() == SV("testing"));
34   }
35   {
36     std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> s(STR("testing"));
37     const std::basic_stringstream<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> ss(std::move(s));
38     assert(ss.str() == SV("testing"));
39   }
40   {
41     std::basic_string<CharT> s(STR("testing"));
42     const std::basic_stringstream<CharT> ss(std::move(s), std::ios_base::out);
43     assert(ss.str() == SV("testing"));
44   }
45   {
46     std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> s(STR("testing"));
47     const std::basic_stringstream<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> ss(
48         std::move(s), std::ios_base::out);
49     assert(ss.str() == SV("testing"));
50   }
51 }
52 
53 int main(int, char**) {
54   test<char>();
55 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
56   test<wchar_t>();
57 #endif
58   return 0;
59 }
60