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// <unordered_set>
10
11// class unordered_set
12
13// bool empty() const noexcept;
14
15#include <unordered_set>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20
21int main(int, char**)
22{
23 {
24 typedef std::unordered_set<int> M;
25 M m;
26 ASSERT_NOEXCEPT(m.empty());
27 assert(m.empty());
28 m.insert(x: M::value_type(1));
29 assert(!m.empty());
30 m.clear();
31 assert(m.empty());
32 }
33#if TEST_STD_VER >= 11
34 {
35 typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M;
36 M m;
37 ASSERT_NOEXCEPT(m.empty());
38 assert(m.empty());
39 m.insert(M::value_type(1));
40 assert(!m.empty());
41 m.clear();
42 assert(m.empty());
43 }
44#endif
45
46 return 0;
47}
48

source code of libcxx/test/std/containers/unord/unord.set/empty.pass.cpp