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 // <ostream>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_ostream;
13 
14 // explicit basic_ostream(basic_streambuf<charT,traits>* sb);
15 
16 #include <ostream>
17 #include <cassert>
18 
19 template <class CharT>
20 struct testbuf
21     : public std::basic_streambuf<CharT>
22 {
23     testbuf() {}
24 };
25 
26 int main(int, char**)
27 {
28     {
29         testbuf<char> sb;
30         std::basic_ostream<char> os(&sb);
31         assert(os.rdbuf() == &sb);
32         assert(os.tie() == 0);
33         assert(os.fill() == ' ');
34         assert(os.rdstate() == os.goodbit);
35         assert(os.exceptions() == os.goodbit);
36         assert(os.flags() == (os.skipws | os.dec));
37         assert(os.precision() == 6);
38         assert(os.getloc().name() == "C");
39     }
40     {
41         testbuf<wchar_t> sb;
42         std::basic_ostream<wchar_t> os(&sb);
43         assert(os.rdbuf() == &sb);
44         assert(os.tie() == 0);
45         assert(os.fill() == L' ');
46         assert(os.rdstate() == os.goodbit);
47         assert(os.exceptions() == os.goodbit);
48         assert(os.flags() == (os.skipws | os.dec));
49         assert(os.precision() == 6);
50         assert(os.getloc().name() == "C");
51     }
52 
53   return 0;
54 }
55