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// template <class T, class Container>
12// void swap(queue<T, Container>& x, queue<T, Container>& y);
13
14#include <queue>
15#include <cassert>
16
17#include "test_macros.h"
18
19template <class C>
20C
21make(int n)
22{
23 C c;
24 for (int i = 0; i < n; ++i)
25 c.push(i);
26 return c;
27}
28
29int main(int, char**)
30{
31 std::queue<int> q1 = make<std::queue<int> >(5);
32 std::queue<int> q2 = make<std::queue<int> >(10);
33 std::queue<int> q1_save = q1;
34 std::queue<int> q2_save = q2;
35 swap(q1, q2);
36 assert(q1 == q2_save);
37 assert(q2 == q1_save);
38
39 return 0;
40}
41

source code of libcxx/test/std/containers/container.adaptors/queue/queue.special/swap.pass.cpp