116 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// explicit flat_set(const key_compare& comp);14// template <class Alloc>15// flat_set(const key_compare& comp, const Alloc& a);16 17#include <deque>18#include <flat_set>19#include <functional>20#include <type_traits>21#include <vector>22 23#include "test_macros.h"24#include "../../../test_compare.h"25#include "test_allocator.h"26#include "MinSequenceContainer.h"27#include "min_allocator.h"28 29template <class KeyContainer>30constexpr void test_compare() {31 {32 using C = test_less<int>;33 auto m = std::flat_set<int, C, KeyContainer>(C(3));34 assert(m.empty());35 assert(m.begin() == m.end());36 assert(m.key_comp() == C(3));37 }38 {39 // The one-argument ctor is explicit.40 using C = test_less<int>;41 static_assert(std::is_constructible_v<std::flat_set<int, C, KeyContainer>, C>);42 static_assert(!std::is_convertible_v<C, std::flat_set<int, C, KeyContainer>>);43 44 static_assert(std::is_constructible_v<std::flat_set<int, std::less<int>, KeyContainer>, std::less<int>>);45 static_assert(!std::is_convertible_v<std::less<int>, std::flat_set<int, std::less<int>, KeyContainer>>);46 }47}48 49template <template <class...> class KeyContainer>50constexpr void test_compare_alloc() {51 {52 using C = test_less<int>;53 using A1 = test_allocator<int>;54 auto m = std::flat_set<int, C, KeyContainer<int, A1>>(C(4), A1(5));55 assert(m.empty());56 assert(m.begin() == m.end());57 assert(m.key_comp() == C(4));58 auto keys = std::move(m).extract();59 assert(keys.get_allocator() == A1(5));60 }61 {62 // explicit(false)63 using C = test_less<int>;64 using A1 = test_allocator<int>;65 std::flat_set<int, C, KeyContainer<int, A1>> m = {C(4), A1(5)};66 assert(m.empty());67 assert(m.begin() == m.end());68 assert(m.key_comp() == C(4));69 auto keys = std::move(m).extract();70 assert(keys.get_allocator() == A1(5));71 }72}73 74constexpr bool test() {75 {76 // The constructors in this subclause shall not participate in overload77 // resolution unless uses_allocator_v<container_type, Alloc> is true.78 79 using C = test_less<int>;80 using A1 = test_allocator<int>;81 using A2 = other_allocator<int>;82 using V1 = std::vector<int, A1>;83 using V2 = std::vector<int, A2>;84 using M1 = std::flat_set<int, C, V1>;85 using M2 = std::flat_set<int, C, V2>;86 static_assert(std::is_constructible_v<M1, const C&, const A1&>);87 static_assert(std::is_constructible_v<M2, const C&, const A2&>);88 static_assert(!std::is_constructible_v<M1, const C&, const A2&>);89 static_assert(!std::is_constructible_v<M2, const C&, const A1&>);90 }91 test_compare<std::vector<int>>();92 test_compare<MinSequenceContainer<int>>();93 test_compare<std::vector<int, min_allocator<int>>>();94 95 test_compare_alloc<std::vector>();96 97#ifndef __cpp_lib_constexpr_deque98 if (!TEST_IS_CONSTANT_EVALUATED)99#endif100 {101 test_compare<std::deque<int>>();102 test_compare_alloc<std::deque>();103 }104 105 return true;106}107 108int main(int, char**) {109 test();110#if TEST_STD_VER >= 26111 static_assert(test());112#endif113 114 return 0;115}116