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_map>
10
11// class unordered_multimap
12
13// bool empty() const noexcept;
14
15#include <unordered_map>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20
21int main(int, char**) {
22 {
23 typedef std::unordered_multimap<int, double> M;
24 M m;
25 ASSERT_NOEXCEPT(m.empty());
26 assert(m.empty());
27 m.insert(x: M::value_type(1, 1.5));
28 assert(!m.empty());
29 m.clear();
30 assert(m.empty());
31 }
32#if TEST_STD_VER >= 11
33 {
34 typedef std::
35 unordered_multimap<int, double, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, double>>>
36 M;
37 M m;
38 ASSERT_NOEXCEPT(m.empty());
39 assert(m.empty());
40 m.insert(M::value_type(1, 1.5));
41 assert(!m.empty());
42 m.clear();
43 assert(m.empty());
44 }
45#endif
46
47 return 0;
48}
49

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