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// size_type max_size() const noexcept;
14
15#include <cassert>
16#include <deque>
17#include <flat_set>
18#include <functional>
19#include <limits>
20#include <type_traits>
21#include <vector>
22
23#include "MinSequenceContainer.h"
24#include "test_allocator.h"
25#include "test_macros.h"
26
27void test() {
28 {
29 using A1 = limited_allocator<int, 10>;
30 using C = std::flat_multiset<int, std::less<int>, std::vector<int, A1>>;
31 ASSERT_SAME_TYPE(C::difference_type, std::ptrdiff_t);
32 ASSERT_SAME_TYPE(C::size_type, std::size_t);
33 const C c;
34 ASSERT_NOEXCEPT(c.max_size());
35 ASSERT_SAME_TYPE(decltype(c.max_size()), C::size_type);
36 assert(c.max_size() <= 10);
37 LIBCPP_ASSERT(c.max_size() == 10);
38 }
39 {
40 using A = limited_allocator<int, (size_t)-1>;
41 using C = std::flat_multiset<int, std::less<int>, std::vector<int, A>>;
42 ASSERT_SAME_TYPE(C::difference_type, std::ptrdiff_t);
43 ASSERT_SAME_TYPE(C::size_type, std::size_t);
44 const C::size_type max_dist = static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
45 const C c;
46 ASSERT_NOEXCEPT(c.max_size());
47 ASSERT_SAME_TYPE(decltype(c.max_size()), C::size_type);
48 assert(c.max_size() <= max_dist);
49 LIBCPP_ASSERT(c.max_size() == max_dist);
50 }
51 {
52 typedef std::flat_multiset<char> C;
53 ASSERT_SAME_TYPE(C::difference_type, std::ptrdiff_t);
54 ASSERT_SAME_TYPE(C::size_type, std::size_t);
55 const C::size_type max_dist = static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
56 const C c;
57 ASSERT_NOEXCEPT(c.max_size());
58 ASSERT_SAME_TYPE(decltype(c.max_size()), C::size_type);
59 assert(c.max_size() <= max_dist);
60 assert(c.max_size() <= alloc_max_size(std::allocator<char>()));
61 }
62}
63
64int main(int, char**) {
65 test();
66
67 return 0;
68}
69

source code of libcxx/test/std/containers/container.adaptors/flat.multiset/flat.multiset.capacity/max_size.pass.cpp