move_assign.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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// <istream>
11
12// template <class charT, class traits = char_traits<charT> >
13// class basic_iostream;
14
15// basic_iostream& operator=(basic_iostream&& rhs);
16
17#include <istream>
18#include <cassert>
19
20#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
21
22template <class CharT>
23struct testbuf
24    : public std::basic_streambuf<CharT>
25{
26    testbuf() {}
27};
28
29template <class CharT>
30struct test_iostream
31    : public std::basic_iostream<CharT>
32{
33    typedef std::basic_iostream<CharT> base;
34    test_iostream(testbuf<CharT>* sb) : base(sb) {}
35
36    test_iostream& operator=(test_iostream&& s)
37        {base::operator=(std::move(s)); return *this;}
38};
39
40#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
41
42int main()
43{
44#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
45    {
46        testbuf<char> sb1;
47        testbuf<char> sb2;
48        test_iostream<char> is1(&sb1);
49        test_iostream<char> is2(&sb2);
50        is2 = (std::move(is1));
51        assert(is1.rdbuf() == &sb1);
52        assert(is1.tie() == 0);
53        assert(is1.fill() == ' ');
54        assert(is1.rdstate() == is1.goodbit);
55        assert(is1.exceptions() == is1.goodbit);
56        assert(is1.flags() == (is1.skipws | is1.dec));
57        assert(is1.precision() == 6);
58        assert(is1.getloc().name() == "C");
59        assert(is2.rdbuf() == &sb2);
60        assert(is2.tie() == 0);
61        assert(is2.fill() == ' ');
62        assert(is2.rdstate() == is2.goodbit);
63        assert(is2.exceptions() == is2.goodbit);
64        assert(is2.flags() == (is2.skipws | is2.dec));
65        assert(is2.precision() == 6);
66        assert(is2.getloc().name() == "C");
67    }
68    {
69        testbuf<wchar_t> sb1;
70        testbuf<wchar_t> sb2;
71        test_iostream<wchar_t> is1(&sb1);
72        test_iostream<wchar_t> is2(&sb2);
73        is2 = (std::move(is1));
74        assert(is1.rdbuf() == &sb1);
75        assert(is1.tie() == 0);
76        assert(is1.fill() == ' ');
77        assert(is1.rdstate() == is1.goodbit);
78        assert(is1.exceptions() == is1.goodbit);
79        assert(is1.flags() == (is1.skipws | is1.dec));
80        assert(is1.precision() == 6);
81        assert(is1.getloc().name() == "C");
82        assert(is2.rdbuf() == &sb2);
83        assert(is2.tie() == 0);
84        assert(is2.fill() == ' ');
85        assert(is2.rdstate() == is2.goodbit);
86        assert(is2.exceptions() == is2.goodbit);
87        assert(is2.flags() == (is2.skipws | is2.dec));
88        assert(is2.precision() == 6);
89        assert(is2.getloc().name() == "C");
90    }
91#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
92}
93