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Vendor import of libc++ trunk r290819:
[FreeBSD/FreeBSD.git] / test / std / input.output / iostream.format / output.streams / ostream.manip / ends.pass.cpp
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 // <ostream>
11
12 // template <class charT, class traits = char_traits<charT> >
13 //   class basic_ostream;
14
15 // template <class charT, class traits>
16 //   basic_ostream<charT,traits>& ends(basic_ostream<charT,traits>& os);
17
18 #include <ostream>
19 #include <cassert>
20
21 template <class CharT>
22 class testbuf
23     : public std::basic_streambuf<CharT>
24 {
25     typedef std::basic_streambuf<CharT> base;
26     std::basic_string<CharT> str_;
27 public:
28     testbuf()
29     {
30     }
31
32     std::basic_string<CharT> str() const
33         {return std::basic_string<CharT>(base::pbase(), base::pptr());}
34
35 protected:
36
37     virtual typename base::int_type
38         overflow(typename base::int_type __c = base::traits_type::eof())
39         {
40             if (__c != base::traits_type::eof())
41             {
42                 int n = static_cast<int>(str_.size());
43                 str_.push_back(static_cast<CharT>(__c));
44                 str_.resize(str_.capacity());
45                 base::setp(const_cast<CharT*>(str_.data()),
46                            const_cast<CharT*>(str_.data() + str_.size()));
47                 base::pbump(n+1);
48             }
49             return __c;
50         }
51 };
52
53 int main()
54 {
55     {
56         testbuf<char> sb;
57         std::ostream os(&sb);
58         ends(os);
59         assert(sb.str().size() == 1);
60         assert(sb.str().back() == 0);
61         assert(os.good());
62     }
63     {
64         testbuf<wchar_t> sb;
65         std::wostream os(&sb);
66         ends(os);
67         assert(sb.str().size() == 1);
68         assert(sb.str().back() == 0);
69         assert(os.good());
70     }
71 }