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// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
12// class Alloc = allocator<Value>>
13// class unordered_set
14
15// pair<iterator, bool> insert(const value_type& x);
16
17#include <unordered_set>
18#include <cassert>
19
20#include "test_macros.h"
21#include "min_allocator.h"
22
23template <class Container>
24void do_insert_const_lvalue_test() {
25 typedef Container C;
26 typedef std::pair<typename C::iterator, bool> R;
27 typedef typename C::value_type VT;
28 C c;
29 const VT v1(3.5);
30 R r = c.insert(v1);
31 assert(c.size() == 1);
32 assert(*r.first == 3.5);
33 assert(r.second);
34
35 r = c.insert(v1);
36 assert(c.size() == 1);
37 assert(*r.first == 3.5);
38 assert(!r.second);
39
40 const VT v2(4.5);
41 r = c.insert(v2);
42 assert(c.size() == 2);
43 assert(*r.first == 4.5);
44 assert(r.second);
45
46 const VT v3(5.5);
47 r = c.insert(v3);
48 assert(c.size() == 3);
49 assert(*r.first == 5.5);
50 assert(r.second);
51}
52
53int main(int, char**) {
54 do_insert_const_lvalue_test<std::unordered_set<double> >();
55#if TEST_STD_VER >= 11
56 {
57 typedef std::unordered_set<double, std::hash<double>, std::equal_to<double>, min_allocator<double>> C;
58 do_insert_const_lvalue_test<C>();
59 }
60#endif
61
62 return 0;
63}
64

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