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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <memory>
10
11// shared_ptr
12
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 > 17
38 AssertOrderAreNoexcept<std::shared_ptr<int>>();
39 AssertOrderReturn<std::strong_ordering, std::shared_ptr<int>>();
40#endif
41
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 > 17
54 assert((p1 <=> p2) != std::strong_ordering::equal);
55 assert((p1 <=> p2) == (ptr1 <=> ptr2));
56#endif
57
58 // The deleter does not influence the comparisons
59 // 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 > 17
70 assert((p2 <=> p3) == std::strong_ordering::equal);
71 assert((p1 <=> p3) != std::strong_ordering::equal);
72 assert((p1 <=> p3) == (ptr1 <=> ptr2));
73#endif
74
75 return 0;
76}
77

source code of libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp.pass.cpp