libcxx/test/containers/container.adaptors/queue/queue.defn/pop.pass.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <queue>

// void pop();

#include <queue>
#include <cassert>

int main()
{
    std::queue<int> q;
    assert(q.size() == 0);
    q.push(1);
    q.push(2);
    q.push(3);
    assert(q.size() == 3);
    assert(q.front() == 1);
    assert(q.back() == 3);
    q.pop();
    assert(q.size() == 2);
    assert(q.front() == 2);
    assert(q.back() == 3);
    q.pop();
    assert(q.size() == 1);
    assert(q.front() == 3);
    assert(q.back() == 3);
    q.pop();
    assert(q.size() == 0);
}