1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <iterator>
11 
12 // istreambuf_iterator
13 
14 // istreambuf_iterator(basic_streambuf<charT,traits>* s) throw();
15 
16 #include <iterator>
17 #include <sstream>
18 #include <cassert>
19 
main()20 int main()
21 {
22     {
23         std::istreambuf_iterator<char> i(nullptr);
24         assert(i == std::istreambuf_iterator<char>());
25     }
26     {
27         std::istringstream inf;
28         std::istreambuf_iterator<char> i(inf.rdbuf());
29         assert(i == std::istreambuf_iterator<char>());
30     }
31     {
32         std::istringstream inf("a");
33         std::istreambuf_iterator<char> i(inf.rdbuf());
34         assert(i != std::istreambuf_iterator<char>());
35     }
36     {
37         std::istreambuf_iterator<wchar_t> i(nullptr);
38         assert(i == std::istreambuf_iterator<wchar_t>());
39     }
40     {
41         std::wistringstream inf;
42         std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
43         assert(i == std::istreambuf_iterator<wchar_t>());
44     }
45     {
46         std::wistringstream inf(L"a");
47         std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
48         assert(i != std::istreambuf_iterator<wchar_t>());
49     }
50 }
51