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 // UNSUPPORTED: c++03, c++11, c++14
10 
11 // <set>
12 
13 // class set
14 
15 // node_type extract(const_iterator);
16 
17 #include <set>
18 #include "test_macros.h"
19 #include "min_allocator.h"
20 #include "Counter.h"
21 
22 template <class Container>
23 void test(Container& c)
24 {
25     size_t sz = c.size();
26 
27     for (auto first = c.cbegin(); first != c.cend();)
28     {
29         auto key_value = *first;
30         typename Container::node_type t = c.extract(first++);
31         --sz;
32         assert(t.value() == key_value);
33         assert(t.get_allocator() == c.get_allocator());
34         assert(sz == c.size());
35     }
36 
37     assert(c.size() == 0);
38 }
39 
40 int main(int, char**)
41 {
42     {
43         using set_type = std::set<int>;
44         set_type m = {1, 2, 3, 4, 5, 6};
45         test(m);
46     }
47 
48     {
49         std::set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
50         assert(Counter_base::gConstructed == 6);
51         test(m);
52         assert(Counter_base::gConstructed == 0);
53     }
54 
55     {
56         using min_alloc_set = std::set<int, std::less<int>, min_allocator<int>>;
57         min_alloc_set m = {1, 2, 3, 4, 5, 6};
58         test(m);
59     }
60 
61   return 0;
62 }
63