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{
26 typedef Container C;
27 typedef std::pair<typename C::iterator, bool> R;
28 typedef typename C::value_type VT;
29 C c;
30 const VT v1(3.5);
31 R r = c.insert(v1);
32 assert(c.size() == 1);
33 assert(*r.first == 3.5);
34 assert(r.second);
35
36 r = c.insert(v1);
37 assert(c.size() == 1);
38 assert(*r.first == 3.5);
39 assert(!r.second);
40
41 const VT v2(4.5);
42 r = c.insert(v2);
43 assert(c.size() == 2);
44 assert(*r.first == 4.5);
45 assert(r.second);
46
47 const VT v3(5.5);
48 r = c.insert(v3);
49 assert(c.size() == 3);
50 assert(*r.first == 5.5);
51 assert(r.second);
52}
53
54int main(int, char**)
55{
56 do_insert_const_lvalue_test<std::unordered_set<double> >();
57#if TEST_STD_VER >= 11
58 {
59 typedef std::unordered_set<double, std::hash<double>,
60 std::equal_to<double>, min_allocator<double>> C;
61 do_insert_const_lvalue_test<C>();
62 }
63#endif
64
65 return 0;
66}
67

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