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 // void pop();
12 
13 #include <queue>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
main(int,char **)18 int main(int, char**)
19 {
20     std::queue<int> q;
21     assert(q.size() == 0);
22     q.push(1);
23     q.push(2);
24     q.push(3);
25     assert(q.size() == 3);
26     assert(q.front() == 1);
27     assert(q.back() == 3);
28     q.pop();
29     assert(q.size() == 2);
30     assert(q.front() == 2);
31     assert(q.back() == 3);
32     q.pop();
33     assert(q.size() == 1);
34     assert(q.front() == 3);
35     assert(q.back() == 3);
36     q.pop();
37     assert(q.size() == 0);
38 
39   return 0;
40 }
41