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 // <string>
11 
12 // basic_string<charT,traits,Allocator>&
13 //   operator=(basic_string<charT,traits,Allocator>&& str);
14 
15 #include <string>
16 #include <cassert>
17 
18 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
19 
20 #include "../test_allocator.h"
21 #include "../min_allocator.h"
22 
23 template <class S>
24 void
25 test(S s1, S s2)
26 {
27     S s0 = s2;
28     s1 = std::move(s2);
29     assert(s1.__invariants());
30     assert(s2.__invariants());
31     assert(s1 == s0);
32     assert(s1.capacity() >= s1.size());
33 }
34 
35 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
36 
37 int main()
38 {
39 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
40     {
41     typedef std::string S;
42     test(S(), S());
43     test(S("1"), S());
44     test(S(), S("1"));
45     test(S("1"), S("2"));
46     test(S("1"), S("2"));
47 
48     test(S(),
49          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
50     test(S("123456789"),
51          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
52     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
53          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
54     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
55            "1234567890123456789012345678901234567890123456789012345678901234567890"),
56          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
57     }
58 #if __cplusplus >= 201103L
59     {
60     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
61     test(S(), S());
62     test(S("1"), S());
63     test(S(), S("1"));
64     test(S("1"), S("2"));
65     test(S("1"), S("2"));
66 
67     test(S(),
68          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
69     test(S("123456789"),
70          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
71     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
72          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
73     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
74            "1234567890123456789012345678901234567890123456789012345678901234567890"),
75          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
76     }
77 #endif
78 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
79 }
80