88 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_map>12 13// flat_map(const flat_map&, const allocator_type&);14 15#include <cassert>16#include <deque>17#include <flat_map>18#include <functional>19#include <vector>20 21#include "test_macros.h"22#include "../../../test_compare.h"23#include "test_allocator.h"24 25template <template <class...> class KeyContainer, template <class...> class ValueContainer>26constexpr void test() {27 using C = test_less<int>;28 KeyContainer<int, test_allocator<int>> ks({1, 3, 5}, test_allocator<int>(6));29 ValueContainer<char, test_allocator<char>> vs({2, 2, 1}, test_allocator<char>(7));30 using M = std::flat_map<int, char, C, decltype(ks), decltype(vs)>;31 auto mo = M(ks, vs, C(5));32 auto m = M(mo, test_allocator<int>(3));33 34 assert(m.key_comp() == C(5));35 assert(m.keys() == ks);36 assert(m.values() == vs);37 assert(m.keys().get_allocator() == test_allocator<int>(3));38 assert(m.values().get_allocator() == test_allocator<char>(3));39 40 // mo is unchanged41 assert(mo.key_comp() == C(5));42 assert(mo.keys() == ks);43 assert(mo.values() == vs);44 assert(mo.keys().get_allocator() == test_allocator<int>(6));45 assert(mo.values().get_allocator() == test_allocator<char>(7));46}47 48constexpr bool test() {49 {50 // The constructors in this subclause shall not participate in overload51 // resolution unless uses_allocator_v<key_container_type, Alloc> is true52 // and uses_allocator_v<mapped_container_type, Alloc> is true.53 54 using C = test_less<int>;55 using A1 = test_allocator<int>;56 using A2 = other_allocator<int>;57 using V1 = std::vector<int, A1>;58 using V2 = std::vector<int, A2>;59 using M1 = std::flat_map<int, int, C, V1, V1>;60 using M2 = std::flat_map<int, int, C, V1, V2>;61 using M3 = std::flat_map<int, int, C, V2, V1>;62 static_assert(std::is_constructible_v<M1, const M1&, const A1&>);63 static_assert(!std::is_constructible_v<M1, const M1&, const A2&>);64 static_assert(!std::is_constructible_v<M2, const M2&, const A2&>);65 static_assert(!std::is_constructible_v<M3, const M3&, const A2&>);66 }67 68 test<std::vector, std::vector>();69 70#ifndef __cpp_lib_constexpr_deque71 if (!TEST_IS_CONSTANT_EVALUATED)72#endif73 {74 test<std::deque, std::deque>();75 }76 77 return true;78}79 80int main(int, char**) {81 test();82#if TEST_STD_VER >= 2683 static_assert(test());84#endif85 86 return 0;87}88