119 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// friend bool operator==(const flat_set& x, const flat_set& y);14// friend synth-three-way-result<value_type>15// operator<=>(const flat_set& x, const flat_set& y);16 17#include <algorithm>18#include <cassert>19#include <deque>20#include <compare>21#include <flat_set>22#include <functional>23#include <limits>24#include <vector>25 26#include "MinSequenceContainer.h"27#include "test_macros.h"28#include "min_allocator.h"29#include "test_allocator.h"30#include "test_comparisons.h"31#include "test_container_comparisons.h"32 33template <class KeyContainer>34constexpr void test_one() {35 using Key = typename KeyContainer::value_type;36 37 {38 using C = std::flat_set<Key>;39 C s1 = {1};40 C s2 = {2};41 ASSERT_SAME_TYPE(decltype(s1 <=> s2), std::strong_ordering);42 AssertComparisonsReturnBool<C>();43 assert(testComparisons(s1, s2, false, true));44 s2 = {1};45 assert(testComparisons(s1, s2, true, false));46 s2 = {1, 2};47 assert(testComparisons(s1, s2, false, true));48 s1 = {0, 1, 2};49 assert(testComparisons(s1, s2, false, true));50 s2 = {0, 1, 3};51 assert(testComparisons(s1, s2, false, true));52 }53 {54 // Comparisons use value_type's native operators, not the comparator55 using C = std::flat_set<Key, std::greater<Key>>;56 C s1 = {1};57 C s2 = {2};58 ASSERT_SAME_TYPE(decltype(s1 <=> s2), std::strong_ordering);59 AssertComparisonsReturnBool<C>();60 assert(testComparisons(s1, s2, false, true));61 s2 = {1};62 assert(testComparisons(s1, s2, true, false));63 s2 = {1, 2};64 assert(testComparisons(s1, s2, false, true));65 s1 = {0, 1, 2};66 assert(testComparisons(s1, s2, false, false));67 s2 = {0, 1, 3};68 assert(testComparisons(s1, s2, false, true));69 }70}71 72constexpr bool test() {73 test_one<std::vector<int>>();74#ifndef __cpp_lib_constexpr_deque75 if (!TEST_IS_CONSTANT_EVALUATED)76#endif77 test_one<std::deque<int>>();78 test_one<MinSequenceContainer<int>>();79 test_one<std::vector<int, min_allocator<int>>>();80 81 {82 using C = std::flat_set<double>;83 C s1 = {1};84 C s2 = C(std::sorted_unique, {std::numeric_limits<double>::quiet_NaN()});85 ASSERT_SAME_TYPE(decltype(s1 <=> s2), std::partial_ordering);86 AssertComparisonsReturnBool<C>();87 assert(testComparisonsComplete(s1, s2, false, false, false));88 }89 {90 // Comparisons use value_type's native operators, not the comparator91 struct StrongComp {92 constexpr bool operator()(double a, double b) const { return std::strong_order(a, b) < 0; }93 };94 using C = std::flat_set<double, StrongComp>;95 C s1 = {1};96 C s2 = {std::numeric_limits<double>::quiet_NaN(), std::numeric_limits<double>::quiet_NaN()};97 ASSERT_SAME_TYPE(decltype(s1 <=> s2), std::partial_ordering);98 AssertComparisonsReturnBool<C>();99 assert(testComparisonsComplete(s1, s2, false, false, false));100 s1 = {1, std::numeric_limits<double>::quiet_NaN(), 1};101 s2 = {std::numeric_limits<double>::quiet_NaN(), 1};102 assert(std::lexicographical_compare_three_way(s1.begin(), s1.end(), s2.begin(), s2.end(), std::strong_order) ==103 std::strong_ordering::equal);104 assert(s1 != s2);105 assert((s1 <=> s2) == std::partial_ordering::unordered);106 }107 108 return true;109}110 111int main(int, char**) {112 test();113#if TEST_STD_VER >= 26114 static_assert(test());115#endif116 117 return 0;118}119