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 | // <flat_set> |
12 | |
13 | // [[nodiscard]] bool empty() const noexcept; |
14 | |
15 | #include <flat_set> |
16 | #include <cassert> |
17 | #include <deque> |
18 | #include <functional> |
19 | #include <utility> |
20 | #include <vector> |
21 | |
22 | #include "MinSequenceContainer.h" |
23 | #include "test_macros.h" |
24 | #include "min_allocator.h" |
25 | |
26 | template <class KeyContainer> |
27 | void test_one() { |
28 | using Key = typename KeyContainer::value_type; |
29 | using M = std::flat_multiset<Key, std::less<int>, KeyContainer>; |
30 | M m; |
31 | ASSERT_SAME_TYPE(decltype(m.empty()), bool); |
32 | ASSERT_NOEXCEPT(m.empty()); |
33 | assert(m.empty()); |
34 | assert(std::as_const(m).empty()); |
35 | m = {1}; |
36 | assert(!m.empty()); |
37 | m.clear(); |
38 | assert(m.empty()); |
39 | } |
40 | |
41 | void test() { |
42 | test_one<std::vector<int>>(); |
43 | test_one<std::deque<int>>(); |
44 | test_one<MinSequenceContainer<int>>(); |
45 | test_one<std::vector<int, min_allocator<int>>>(); |
46 | } |
47 | |
48 | int main(int, char**) { |
49 | test(); |
50 | |
51 | return 0; |
52 | } |
53 | |