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 // template <class T, class Container, class Compare>
14 // void swap(priority_queue<T, Container, Compare>& x,
15 // priority_queue<T, Container, Compare>& y);
16
17 #include <queue>
18 #include <cassert>
19
20 #include "test_macros.h"
21
main(int,char **)22 int main(int, char**)
23 {
24 std::priority_queue<int> q1;
25 std::priority_queue<int> q2;
26 q1.push(1);
27 q1.push(3);
28 q1.push(2);
29 swap(q1, q2);
30 assert(q1.empty());
31 assert(q2.size() == 3);
32 assert(q2.top() == 3);
33
34 return 0;
35 }
36