1 //
2 // Tests for
3 //  ~intrusive_shared_ptr();
4 //
5 
6 #include <libkern/c++/intrusive_shared_ptr.h>
7 #include <darwintest.h>
8 #include <darwintest_utils.h>
9 #include "test_policy.h"
10 
11 struct T { int i; };
12 
13 T_DECL(dtor, "intrusive_shared_ptr.dtor") {
14 	// Destroy a non-null shared pointer
15 	{
16 		T obj{0};
17 		test_policy::retain_count = 3;
18 
19 		{
20 			libkern::intrusive_shared_ptr<T, test_policy> ptr(&obj, libkern::no_retain);
21 			CHECK(test_policy::retain_count == 3);
22 		}
23 
24 		CHECK(test_policy::retain_count == 2);
25 	}
26 
27 	// Destroy a null shared pointer
28 	{
29 		test_policy::retain_count = 3;
30 
31 		{
32 			libkern::intrusive_shared_ptr<T, test_policy> ptr = nullptr;
33 			CHECK(test_policy::retain_count == 3);
34 		}
35 
36 		CHECK(test_policy::retain_count == 3); // not decremented
37 	}
38 }
39