xref: /llvm-project/libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp (revision 1f4231f8cf138c810a55a398c07a422908add70f)
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 // UNSUPPORTED: c++98, c++03
11 
12 // <string>
13 
14 // basic_string(basic_string<charT,traits,Allocator>&& str);
15 
16 #include <string>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 #include "test_allocator.h"
21 #include "min_allocator.h"
22 
23 template <class S>
24 void
25 test(S s0)
26 {
27     S s1 = s0;
28     S s2 = std::move(s0);
29     LIBCPP_ASSERT(s2.__invariants());
30     LIBCPP_ASSERT(s0.__invariants());
31     assert(s2 == s1);
32     assert(s2.capacity() >= s2.size());
33     assert(s2.get_allocator() == s1.get_allocator());
34 }
35 
36 int main()
37 {
38     {
39     typedef test_allocator<char> A;
40     typedef std::basic_string<char, std::char_traits<char>, A> S;
41     test(S(A(3)));
42     test(S("1", A(5)));
43     test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
44     }
45     {
46     typedef min_allocator<char> A;
47     typedef std::basic_string<char, std::char_traits<char>, A> S;
48     test(S(A{}));
49     test(S("1", A()));
50     test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
51     }
52 }
53