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 // <iterator>
10 
11 // istreambuf_iterator
12 
13 // istreambuf_iterator(basic_streambuf<charT,traits>* s) throw();
14 
15 #include <iterator>
16 #include <sstream>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
main(int,char **)21 int main(int, char**)
22 {
23     {
24         std::istreambuf_iterator<char> i(nullptr);
25         assert(i == std::istreambuf_iterator<char>());
26     }
27     {
28         std::istringstream inf;
29         std::istreambuf_iterator<char> i(inf.rdbuf());
30         assert(i == std::istreambuf_iterator<char>());
31     }
32     {
33         std::istringstream inf("a");
34         std::istreambuf_iterator<char> i(inf.rdbuf());
35         assert(i != std::istreambuf_iterator<char>());
36     }
37 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
38     {
39         std::istreambuf_iterator<wchar_t> i(nullptr);
40         assert(i == std::istreambuf_iterator<wchar_t>());
41     }
42     {
43         std::wistringstream inf;
44         std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
45         assert(i == std::istreambuf_iterator<wchar_t>());
46     }
47     {
48         std::wistringstream inf(L"a");
49         std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
50         assert(i != std::istreambuf_iterator<wchar_t>());
51     }
52 #endif // TEST_HAS_NO_WIDE_CHARACTERS
53 
54   return 0;
55 }
56