64 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// <map>12 13// class multimap14 15// node_type extract(const_iterator);16 17#include <map>18#include "test_macros.h"19#include "min_allocator.h"20#include "Counter.h"21 22template <class Container>23void test(Container& c) {24 std::size_t sz = c.size();25 26 auto some_key = c.cbegin()->first;27 28 for (auto first = c.cbegin(); first != c.cend();) {29 auto key_value = first->first;30 typename Container::node_type t = c.extract(first++);31 --sz;32 assert(t.key() == key_value);33 t.key() = some_key;34 assert(t.key() == some_key);35 assert(t.get_allocator() == c.get_allocator());36 assert(sz == c.size());37 }38 39 assert(c.size() == 0);40}41 42int main(int, char**) {43 {44 using map_type = std::multimap<int, int>;45 map_type m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};46 test(m);47 }48 49 {50 std::multimap<Counter<int>, Counter<int>> m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};51 assert(Counter_base::gConstructed == 12);52 test(m);53 assert(Counter_base::gConstructed == 0);54 }55 56 {57 using min_alloc_map = std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>;58 min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};59 test(m);60 }61 62 return 0;63}64