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// template<class Allocator>
14// explicit flat_set(const Allocator& a);
15
16#include <cassert>
17#include <flat_set>
18#include <functional>
19#include <vector>
20
21#include "test_macros.h"
22#include "test_allocator.h"
23#include "../../../test_compare.h"
24
25void test() {
26 {
27 // The constructors in this subclause shall not participate in overload
28 // resolution unless uses_allocator_v<container_type, Alloc> is true.
29
30 using C = test_less<int>;
31 using A1 = test_allocator<int>;
32 using A2 = other_allocator<int>;
33 using V1 = std::vector<int, A1>;
34 using V2 = std::vector<int, A2>;
35 using M1 = std::flat_set<int, C, V1>;
36 using M2 = std::flat_set<int, C, V2>;
37 static_assert(std::is_constructible_v<M1, const A1&>);
38 static_assert(std::is_constructible_v<M2, const A2&>);
39 static_assert(!std::is_constructible_v<M1, const A2&>);
40 static_assert(!std::is_constructible_v<M2, const A1&>);
41 }
42 {
43 // explicit
44 using M = std::flat_set<int, std::less<int>, std::vector<int, test_allocator<int>>>;
45
46 static_assert(std::is_constructible_v<M, test_allocator<int>>);
47 static_assert(!std::is_convertible_v<test_allocator<int>, M>);
48 }
49 {
50 using A = test_allocator<short>;
51 using M = std::flat_set<int, std::less<int>, std::vector<int, test_allocator<int>>>;
52 M m(A(0, 5));
53 assert(m.empty());
54 assert(m.begin() == m.end());
55 auto v = std::move(m).extract();
56 assert(v.get_allocator().get_id() == 5);
57 }
58}
59
60int main(int, char**) {
61 test();
62
63 return 0;
64}
65

source code of libcxx/test/std/containers/container.adaptors/flat.set/flat.set.cons/alloc.pass.cpp