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// <queue>
10
11// priority_queue();
12
13// void swap(priority_queue& q);
14
15#include <queue>
16#include <cassert>
17
18#include "test_macros.h"
19
20TEST_CONSTEXPR_CXX26 bool test() {
21 std::priority_queue<int> q1;
22 std::priority_queue<int> q2;
23 q1.push(1);
24 q1.push(3);
25 q1.push(2);
26 q1.swap(q2);
27 assert(q1.empty());
28 assert(q2.size() == 3);
29 assert(q2.top() == 3);
30
31 return true;
32}
33
34int main(int, char**) {
35 assert(test());
36#if TEST_STD_VER >= 26
37 static_assert(test());
38#endif
39
40 return 0;
41}
42

source code of libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/swap.pass.cpp