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_istringstream
15 
16 // explicit basic_istringstream(basic_string<char_type, traits_type, allocator_type>&& s, ios_base::openmode which = 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 
27 template <class CharT>
28 static void test() {
29   {
30     std::basic_string<CharT> s(STR("testing"));
31     const std::basic_istringstream<CharT> ss(std::move(s));
32     assert(ss.str() == STR("testing"));
33   }
34   {
35     std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> s(STR("testing"));
36     const std::basic_istringstream<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> ss(std::move(s));
37     assert((ss.str() ==
38             std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>>(STR("testing"))));
39   }
40   {
41     std::basic_string<CharT> s(STR("testing"));
42     const std::basic_istringstream<CharT> ss(std::move(s), std::ios_base::binary);
43     assert(ss.str() == STR("testing"));
44   }
45   {
46     std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> s(STR("testing"));
47     const std::basic_istringstream<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>> ss(
48         std::move(s), std::ios_base::binary);
49     assert((ss.str() ==
50             std::basic_string<CharT, std::char_traits<CharT>, operator_hijacker_allocator<CharT>>(STR("testing"))));
51   }
52 }
53 
54 int main(int, char**) {
55   test<char>();
56 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
57   test<wchar_t>();
58 #endif
59   return 0;
60 }
61