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 // unique_ptr
12
13 // test swap
14
15 #include <memory>
16 #include <cassert>
17
18 #include "test_macros.h"
19 #include "unique_ptr_test_helper.h"
20
21 struct TT {
22 int state_;
23 static int count;
TTTT24 TT() : state_(-1) { ++count; }
TTTT25 explicit TT(int i) : state_(i) { ++count; }
TTTT26 TT(const TT& a) : state_(a.state_) { ++count; }
operator =TT27 TT& operator=(const TT& a) {
28 state_ = a.state_;
29 return *this;
30 }
~TTTT31 ~TT() { --count; }
32
operator ==(const TT & x,const TT & y)33 friend bool operator==(const TT& x, const TT& y) {
34 return x.state_ == y.state_;
35 }
36 };
37
38 int TT::count = 0;
39
40 template <class T>
newValueInit(int size,int new_value)41 typename std::remove_all_extents<T>::type* newValueInit(int size,
42 int new_value) {
43 typedef typename std::remove_all_extents<T>::type VT;
44 VT* p = newValue<T>(size);
45 for (int i = 0; i < size; ++i)
46 (p + i)->state_ = new_value;
47 return p;
48 }
49
50 template <bool IsArray>
test_basic()51 void test_basic() {
52 typedef typename std::conditional<IsArray, TT[], TT>::type VT;
53 const int expect_alive = IsArray ? 5 : 1;
54 #if TEST_STD_VER >= 11
55 {
56 using U = std::unique_ptr<VT, Deleter<VT> >;
57 U u; ((void)u);
58 ASSERT_NOEXCEPT(u.swap(u));
59 }
60 #endif
61 {
62 TT* p1 = newValueInit<VT>(expect_alive, 1);
63 std::unique_ptr<VT, Deleter<VT> > s1(p1, Deleter<VT>(1));
64 TT* p2 = newValueInit<VT>(expect_alive, 2);
65 std::unique_ptr<VT, Deleter<VT> > s2(p2, Deleter<VT>(2));
66 assert(s1.get() == p1);
67 assert(*s1.get() == TT(1));
68 assert(s1.get_deleter().state() == 1);
69 assert(s2.get() == p2);
70 assert(*s2.get() == TT(2));
71 assert(s2.get_deleter().state() == 2);
72 s1.swap(s2);
73 assert(s1.get() == p2);
74 assert(*s1.get() == TT(2));
75 assert(s1.get_deleter().state() == 2);
76 assert(s2.get() == p1);
77 assert(*s2.get() == TT(1));
78 assert(s2.get_deleter().state() == 1);
79 assert(TT::count == (expect_alive * 2));
80 }
81 assert(TT::count == 0);
82 }
83
main(int,char **)84 int main(int, char**) {
85 test_basic</*IsArray*/ false>();
86 test_basic<true>();
87
88 return 0;
89 }
90