89 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++14, c++17, c++2010 11// <flat_set>12 13// size_type count(const key_type& x) const;14 15#include <cassert>16#include <deque>17#include <flat_set>18#include <functional>19#include <utility>20 21#include "MinSequenceContainer.h"22#include "test_macros.h"23#include "min_allocator.h"24 25template <class KeyContainer>26constexpr void test_one() {27 using Key = typename KeyContainer::value_type;28 using S = typename KeyContainer::size_type;29 30 {31 using M = std::flat_multiset<Key, std::less<>, KeyContainer>;32 M m = {1, 2, 2, 2, 2, 4, 4, 5, 8, 8, 8};33 ASSERT_SAME_TYPE(decltype(m.count(0)), S);34 assert(m.count(0) == 0);35 assert(m.count(1) == 1);36 assert(m.count(2) == 4);37 assert(m.count(3) == 0);38 assert(m.count(4) == 2);39 assert(m.count(5) == 1);40 assert(m.count(6) == 0);41 assert(m.count(7) == 0);42 assert(std::as_const(m).count(8) == 3);43 assert(std::as_const(m).count(9) == 0);44 }45 {46 using M = std::flat_multiset<Key, std::greater<int>, KeyContainer>;47 M m = {1, 2, 4, 4, 4, 4, 5, 5, 8};48 ASSERT_SAME_TYPE(decltype(m.count(0)), S);49 assert(m.count(0) == 0);50 assert(m.count(1) == 1);51 assert(m.count(2) == 1);52 assert(m.count(3) == 0);53 assert(m.count(4) == 4);54 assert(m.count(5) == 2);55 assert(m.count(6) == 0);56 assert(m.count(7) == 0);57 assert(std::as_const(m).count(8) == 1);58 assert(std::as_const(m).count(9) == 0);59 }60 {61 // empty62 using M = std::flat_multiset<Key, std::less<>, KeyContainer>;63 M m;64 assert(m.count(0) == 0);65 assert(m.count(1) == 0);66 }67}68 69constexpr bool test() {70 test_one<std::vector<int>>();71#ifndef __cpp_lib_constexpr_deque72 if (!TEST_IS_CONSTANT_EVALUATED)73#endif74 test_one<std::deque<int>>();75 test_one<MinSequenceContainer<int>>();76 test_one<std::vector<int, min_allocator<int>>>();77 78 return true;79}80 81int main(int, char**) {82 test();83#if TEST_STD_VER >= 2684 static_assert(test());85#endif86 87 return 0;88}89