xref: /llvm-project/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_iterators.pass.cpp (revision 59d246e55f56799ef47dcaae9788c0c3e77a2244)
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 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
10 
11 // <queue>
12 
13 // template <class InputIterator>
14 // queue(InputIterator, InputIterator);
15 
16 #include <cassert>
17 #include <queue>
18 #include <type_traits>
19 
20 #include "test_allocator.h"
21 
22 static_assert(!std::is_constructible_v<std::queue<int>, int, int, std::allocator<int>>);
23 static_assert(!std::is_constructible_v<std::queue<int>, int*, int*, int>);
24 static_assert( std::is_constructible_v<std::queue<int, std::deque<int, test_allocator<int>>>, int*, int*, test_allocator<int>>);
25 static_assert(!std::is_constructible_v<std::queue<int, std::deque<int, test_allocator<int>>>, int*, int*, std::allocator<int>>);
26 
27 template <class T>
28 struct alloc : test_allocator<T> {
29   alloc(test_allocator_statistics* a);
30 
31   template <class U>
32   struct rebind {
33     using other = alloc<U>;
34   };
35 };
36 static_assert(
37     std::is_constructible_v<std::queue<int, std::deque<int, alloc<int>>>, int*, int*, test_allocator_statistics*>);
38 
main(int,char **)39 int main(int, char**) {
40   const int a[] = {4, 3, 2, 1};
41   std::queue<int> queue(a, a + 4);
42   assert(queue.front() == 4);
43   queue.pop();
44   assert(queue.front() == 3);
45   queue.pop();
46   assert(queue.front() == 2);
47   queue.pop();
48   assert(queue.front() == 1);
49   queue.pop();
50   assert(queue.empty());
51 
52   return 0;
53 }
54