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 // <istream>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_iostream;
13 
14 // basic_iostream(basic_iostream&& rhs);
15 
16 #include <istream>
17 #include <cassert>
18 #include <streambuf>
19 
20 #include "test_macros.h"
21 
22 
23 template <class CharT>
24 struct testbuf
25     : public std::basic_streambuf<CharT>
26 {
27     testbuf() {}
28 };
29 
30 template <class CharT>
31 struct test_iostream
32     : public std::basic_iostream<CharT>
33 {
34     typedef std::basic_iostream<CharT> base;
35     test_iostream(testbuf<CharT>* sb) : base(sb) {}
36 
37     test_iostream(test_iostream&& s)
38         : base(std::move(s)) {}
39 };
40 
41 
42 int main(int, char**)
43 {
44     {
45         testbuf<char> sb;
46         test_iostream<char> is1(&sb);
47         test_iostream<char> is(std::move(is1));
48         assert(is1.rdbuf() == &sb);
49         assert(is1.gcount() == 0);
50         assert(is.gcount() == 0);
51         assert(is.rdbuf() == 0);
52         assert(is.tie() == 0);
53         assert(is.fill() == ' ');
54         assert(is.rdstate() == is.goodbit);
55         assert(is.exceptions() == is.goodbit);
56         assert(is.flags() == (is.skipws | is.dec));
57         assert(is.precision() == 6);
58         assert(is.getloc().name() == "C");
59     }
60 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
61     {
62         testbuf<wchar_t> sb;
63         test_iostream<wchar_t> is1(&sb);
64         test_iostream<wchar_t> is(std::move(is1));
65         assert(is1.gcount() == 0);
66         assert(is.gcount() == 0);
67         assert(is1.rdbuf() == &sb);
68         assert(is.rdbuf() == 0);
69         assert(is.tie() == 0);
70         assert(is.fill() == L' ');
71         assert(is.rdstate() == is.goodbit);
72         assert(is.exceptions() == is.goodbit);
73         assert(is.flags() == (is.skipws | is.dec));
74         assert(is.precision() == 6);
75         assert(is.getloc().name() == "C");
76     }
77 #endif
78 
79   return 0;
80 }
81