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 // basic_ostream& operator=(basic_ostream&& rhs);
15 
16 #include <ostream>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 
22 template <class CharT>
23 struct testbuf
24     : public std::basic_streambuf<CharT>
25 {
26     testbuf() {}
27 };
28 
29 template <class CharT>
30 struct test_ostream
31     : public std::basic_ostream<CharT>
32 {
33     typedef std::basic_ostream<CharT> base;
34     test_ostream(testbuf<CharT>* sb) : base(sb) {}
35 
36     test_ostream& operator=(test_ostream&& s)
37         {base::operator=(std::move(s)); return *this;}
38 };
39 
40 
41 int main(int, char**)
42 {
43     {
44         testbuf<char> sb1;
45         testbuf<char> sb2;
46         test_ostream<char> os1(&sb1);
47         test_ostream<char> os2(&sb2);
48         os2 = (std::move(os1));
49         assert(os1.rdbuf() == &sb1);
50         assert(os1.tie() == 0);
51         assert(os1.fill() == ' ');
52         assert(os1.rdstate() == os1.goodbit);
53         assert(os1.exceptions() == os1.goodbit);
54         assert(os1.flags() == (os1.skipws | os1.dec));
55         assert(os1.precision() == 6);
56         assert(os1.getloc().name() == "C");
57         assert(os2.rdbuf() == &sb2);
58         assert(os2.tie() == 0);
59         assert(os2.fill() == ' ');
60         assert(os2.rdstate() == os2.goodbit);
61         assert(os2.exceptions() == os2.goodbit);
62         assert(os2.flags() == (os2.skipws | os2.dec));
63         assert(os2.precision() == 6);
64         assert(os2.getloc().name() == "C");
65     }
66     {
67         testbuf<wchar_t> sb1;
68         testbuf<wchar_t> sb2;
69         test_ostream<wchar_t> os1(&sb1);
70         test_ostream<wchar_t> os2(&sb2);
71         os2 = (std::move(os1));
72         assert(os1.rdbuf() == &sb1);
73         assert(os1.tie() == 0);
74         assert(os1.fill() == ' ');
75         assert(os1.rdstate() == os1.goodbit);
76         assert(os1.exceptions() == os1.goodbit);
77         assert(os1.flags() == (os1.skipws | os1.dec));
78         assert(os1.precision() == 6);
79         assert(os1.getloc().name() == "C");
80         assert(os2.rdbuf() == &sb2);
81         assert(os2.tie() == 0);
82         assert(os2.fill() == ' ');
83         assert(os2.rdstate() == os2.goodbit);
84         assert(os2.exceptions() == os2.goodbit);
85         assert(os2.flags() == (os2.skipws | os2.dec));
86         assert(os2.precision() == 6);
87         assert(os2.getloc().name() == "C");
88     }
89 
90   return 0;
91 }
92