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 // <deque>
10 
11 // void clear() noexcept;
12 
13 #include <deque>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 #include "../../../NotConstructible.h"
18 #include "min_allocator.h"
19 
20 int main(int, char**)
21 {
22     {
23         typedef NotConstructible T;
24         typedef std::deque<T> C;
25         C c;
26         ASSERT_NOEXCEPT(c.clear());
27         c.clear();
28         assert(std::distance(c.begin(), c.end()) == 0);
29     }
30     {
31         typedef int T;
32         typedef std::deque<T> C;
33         const T t[] = {0, 1, 2, 3, 4};
34         C c(std::begin(t), std::end(t));
35 
36         ASSERT_NOEXCEPT(c.clear());
37         c.clear();
38         assert(std::distance(c.begin(), c.end()) == 0);
39 
40         c.clear();
41         assert(std::distance(c.begin(), c.end()) == 0);
42     }
43 #if TEST_STD_VER >= 11
44     {
45         typedef NotConstructible T;
46         typedef std::deque<T, min_allocator<T>> C;
47         C c;
48         ASSERT_NOEXCEPT(c.clear());
49         c.clear();
50         assert(std::distance(c.begin(), c.end()) == 0);
51     }
52     {
53         typedef int T;
54         typedef std::deque<T, min_allocator<T>> C;
55         const T t[] = {0, 1, 2, 3, 4};
56         C c(std::begin(t), std::end(t));
57 
58         ASSERT_NOEXCEPT(c.clear());
59         c.clear();
60         assert(std::distance(c.begin(), c.end()) == 0);
61 
62         c.clear();
63         assert(std::distance(c.begin(), c.end()) == 0);
64     }
65 #endif
66 
67   return 0;
68 }
69