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
10
11// <unordered_set>
12
13// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
14// class Alloc = allocator<Value>>
15// class unordered_set
16
17// unordered_set& operator=(initializer_list<value_type> il);
18
19#include <unordered_set>
20#include <cassert>
21#include <cfloat>
22#include <cmath>
23#include <cstddef>
24
25#include "test_macros.h"
26#include "../../../test_compare.h"
27#include "../../../test_hash.h"
28#include "test_allocator.h"
29#include "min_allocator.h"
30
31int main(int, char**)
32{
33 {
34 typedef test_allocator<int> A;
35 typedef std::unordered_set<int,
36 test_hash<int>,
37 test_equal_to<int>,
38 A
39 > C;
40 typedef int P;
41 C c = {
42 P(4),
43 P(1),
44 P(2)
45 };
46 c = {
47 P(1),
48 P(2),
49 P(3),
50 P(4),
51 P(1),
52 P(2)
53 };
54 assert(c.bucket_count() >= 5);
55 assert(c.size() == 4);
56 assert(c.count(1) == 1);
57 assert(c.count(2) == 1);
58 assert(c.count(3) == 1);
59 assert(c.count(4) == 1);
60 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
61 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
62 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
63 assert(c.max_load_factor() == 1);
64 }
65 {
66 typedef min_allocator<int> A;
67 typedef std::unordered_set<int,
68 test_hash<int>,
69 test_equal_to<int>,
70 A
71 > C;
72 typedef int P;
73 C c = {
74 P(4),
75 P(1),
76 P(2)
77 };
78 c = {
79 P(1),
80 P(2),
81 P(3),
82 P(4),
83 P(1),
84 P(2)
85 };
86 assert(c.bucket_count() >= 5);
87 assert(c.size() == 4);
88 assert(c.count(1) == 1);
89 assert(c.count(2) == 1);
90 assert(c.count(3) == 1);
91 assert(c.count(4) == 1);
92 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
93 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
94 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
95 assert(c.max_load_factor() == 1);
96 }
97
98 return 0;
99}
100

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