extract_key.pass.cpp
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//===----------------------------------------------------------------------===//
//
// 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
// <set>
// class multiset
// node_type extract(key_type const&);
#include <set>
#include "test_macros.h"
#include "min_allocator.h"
#include "Counter.h"
template <class Container, class KeyTypeIter>
void test(Container& c, KeyTypeIter first, KeyTypeIter last)
{
size_t sz = c.size();
assert((size_t)std::distance(first, last) == sz);
for (KeyTypeIter copy = first; copy != last; ++copy)
{
typename Container::node_type t = c.extract(*copy);
assert(!t.empty());
--sz;
assert(t.value() == *copy);
assert(t.get_allocator() == c.get_allocator());
assert(sz == c.size());
}
assert(c.size() == 0);
for (KeyTypeIter copy = first; copy != last; ++copy)
{
typename Container::node_type t = c.extract(*copy);
assert(t.empty());
}
}
int main(int, char**)
{
{
std::multiset<int> m = {1, 2, 3, 4, 5, 6};
int keys[] = {1, 2, 3, 4, 5, 6};
test(m, std::begin(keys), std::end(keys));
}
{
std::multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
{
Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
assert(Counter_base::gConstructed == 6+6);
test(m, std::begin(keys), std::end(keys));
}
assert(Counter_base::gConstructed == 0);
}
{
using min_alloc_set = std::multiset<int, std::less<int>, min_allocator<int>>;
min_alloc_set m = {1, 2, 3, 4, 5, 6};
int keys[] = {1, 2, 3, 4, 5, 6};
test(m, std::begin(keys), std::end(keys));
}
return 0;
}