77 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// <memory>10 11// shared_ptr12 13// template<class T, class U> bool operator==(const shared_ptr<T>& a, const shared_ptr<U>& b);14// template<class T, class U> bool operator!=(const shared_ptr<T>& a, const shared_ptr<U>& b);15// template<class T, class U> bool operator< (const shared_ptr<T>& a, const shared_ptr<U>& b);16// template<class T, class U> bool operator<=(const shared_ptr<T>& a, const shared_ptr<U>& b);17// template<class T, class U> bool operator> (const shared_ptr<T>& a, const shared_ptr<U>& b);18// template<class T, class U> bool operator>=(const shared_ptr<T>& a, const shared_ptr<U>& b);19// template<class T1, class D1, class T2, class D2>20// requires three_way_comparable_with<typename unique_ptr<T1, D1>::pointer,21// typename unique_ptr<T2, D2>::pointer>22// compare_three_way_result_t<typename unique_ptr<T1, D1>::pointer,23// typename unique_ptr<T2, D2>::pointer>24// operator<=>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);25 26#include <memory>27#include <cassert>28 29#include "test_macros.h"30#include "test_comparisons.h"31 32void do_nothing(int*) {}33 34int main(int, char**) {35 AssertComparisonsAreNoexcept<std::shared_ptr<int> >();36 AssertComparisonsReturnBool<std::shared_ptr<int> >();37#if TEST_STD_VER > 1738 AssertOrderAreNoexcept<std::shared_ptr<int>>();39 AssertOrderReturn<std::strong_ordering, std::shared_ptr<int>>();40#endif41 42 int* ptr1(new int);43 int* ptr2(new int);44 const std::shared_ptr<int> p1(ptr1);45 const std::shared_ptr<int> p2(ptr2);46 47 assert(!(p1 == p2));48 assert(p1 != p2);49 assert((p1 < p2) == (ptr1 < ptr2));50 assert((p1 <= p2) == (ptr1 <= ptr2));51 assert((p1 > p2) == (ptr1 > ptr2));52 assert((p1 >= p2) == (ptr1 >= ptr2));53#if TEST_STD_VER > 1754 assert((p1 <=> p2) != std::strong_ordering::equal);55 assert((p1 <=> p2) == (ptr1 <=> ptr2));56#endif57 58 // The deleter does not influence the comparisons59 // of the `shared_ptr`60 const std::shared_ptr<int> p3(ptr2, do_nothing);61 assert(p2 == p3);62 assert(!(p1 == p3));63 assert(!(p2 != p3));64 assert(p1 != p3);65 assert((p1 < p3) == (ptr1 < ptr2));66 assert((p1 <= p3) == (ptr1 <= ptr2));67 assert((p1 > p3) == (ptr1 > ptr2));68 assert((p1 >= p3) == (ptr1 >= ptr2));69#if TEST_STD_VER > 1770 assert((p2 <=> p3) == std::strong_ordering::equal);71 assert((p1 <=> p3) != std::strong_ordering::equal);72 assert((p1 <=> p3) == (ptr1 <=> ptr2));73#endif74 75 return 0;76}77