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// bool empty() const;
14
15#include <queue>
16#include <cassert>
17
18#include "test_macros.h"
19
20TEST_CONSTEXPR_CXX26 bool test() {
21 std::priority_queue<int> q;
22 assert(q.empty());
23 q.push(1);
24 assert(!q.empty());
25 q.pop();
26 assert(q.empty());
27
28 return true;
29}
30
31int main(int, char**) {
32 assert(test());
33#if TEST_STD_VER >= 26
34 static_assert(test());
35#endif
36
37 return 0;
38}
39

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