72 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(key_type const&);16 17#include <map>18#include "test_macros.h"19#include "min_allocator.h"20#include "Counter.h"21 22template <class Container, class KeyTypeIter>23void test(Container& c, KeyTypeIter first, KeyTypeIter last) {24 std::size_t sz = c.size();25 assert((std::size_t)std::distance(first, last) == sz);26 27 for (KeyTypeIter copy = first; copy != last; ++copy) {28 typename Container::node_type t = c.extract(*copy);29 assert(!t.empty());30 --sz;31 assert(t.key() == *copy);32 t.key() = *first; // We should be able to mutate key.33 assert(t.key() == *first);34 assert(t.get_allocator() == c.get_allocator());35 assert(sz == c.size());36 }37 38 assert(c.size() == 0);39 40 for (KeyTypeIter copy = first; copy != last; ++copy) {41 typename Container::node_type t = c.extract(*copy);42 assert(t.empty());43 }44}45 46int main(int, char**) {47 {48 std::multimap<int, int> m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};49 int keys[] = {1, 2, 3, 4, 5, 6};50 test(m, std::begin(keys), std::end(keys));51 }52 53 {54 std::multimap<Counter<int>, Counter<int>> m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};55 {56 Counter<int> keys[] = {1, 2, 3, 4, 5, 6};57 assert(Counter_base::gConstructed == 12 + 6);58 test(m, std::begin(keys), std::end(keys));59 }60 assert(Counter_base::gConstructed == 0);61 }62 63 {64 using min_alloc_map = std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>;65 min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};66 int keys[] = {1, 2, 3, 4, 5, 6};67 test(m, std::begin(keys), std::end(keys));68 }69 70 return 0;71}72