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