//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// <unordered_set>
// class unordered_multiset
// iterator insert(node_type&&);
#include <unordered_set>
#include <type_traits>
#include "test_macros.h"
#include "min_allocator.h"
template <class Container>
typename Container::node_type
node_factory(typename Container::key_type const& key)
{
static Container c;
auto it = c.insert(key);
return c.extract(it);
}
template <class Container>
void test(Container& c)
{
auto* nf = &node_factory<Container>;
for (int i = 0; i != 10; ++i)
{
typename Container::node_type node = nf(i);
assert(!node.empty());
typename Container::iterator it = c.insert(std::move(node));
assert(node.empty());
assert(it == c.find(i) && it != c.end());
assert(*it == i);
assert(node.empty());
}
assert(c.size() == 10);
{ // Insert empty node.
typename Container::node_type def;
auto it = c.insert(std::move(def));
assert(def.empty());
assert(it == c.end());
}
{ // Insert duplicate node.
typename Container::node_type dupl = nf(0);
auto it = c.insert(std::move(dupl));
assert(*it == 0);
}
assert(c.size() == 11);
assert(c.count(0) == 2);
for (int i = 1; i != 10; ++i)
{
assert(c.count(i) == 1);
}
}
int main(int, char**)
{
std::unordered_multiset<int> m;
test(m);
std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> m2;
test(m2);
return 0;
}