70 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// <unordered_map>10 11// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,12// class Alloc = allocator<pair<const Key, T>>>13// class unordered_map14 15// size_type count(const key_type& k) const;16 17#include <unordered_map>18#include <string>19#include <cassert>20#include <iterator>21 22#include "test_macros.h"23#include "min_allocator.h"24 25int main(int, char**) {26 {27 typedef std::unordered_map<int, std::string> C;28 typedef std::pair<int, std::string> P;29 P a[] = {30 P(10, "ten"),31 P(20, "twenty"),32 P(30, "thirty"),33 P(40, "forty"),34 P(50, "fifty"),35 P(60, "sixty"),36 P(70, "seventy"),37 P(80, "eighty"),38 };39 const C c(std::begin(a), std::end(a));40 assert(c.count(30) == 1);41 assert(c.count(5) == 0);42 }43#if TEST_STD_VER >= 1144 {45 typedef std::unordered_map<int,46 std::string,47 std::hash<int>,48 std::equal_to<int>,49 min_allocator<std::pair<const int, std::string>>>50 C;51 typedef std::pair<int, std::string> P;52 P a[] = {53 P(10, "ten"),54 P(20, "twenty"),55 P(30, "thirty"),56 P(40, "forty"),57 P(50, "fifty"),58 P(60, "sixty"),59 P(70, "seventy"),60 P(80, "eighty"),61 };62 const C c(std::begin(a), std::end(a));63 assert(c.count(30) == 1);64 assert(c.count(5) == 0);65 }66#endif67 68 return 0;69}70