1 // 2 // Tests for 3 // void reset() noexcept; 4 // 5 6 #include <libkern/c++/intrusive_shared_ptr.h> 7 #include <darwintest.h> 8 #include "test_policy.h" 9 10 struct T { 11 int i; 12 }; 13 14 template <typename T> 15 static void tests()16tests() 17 { 18 T obj{3}; 19 20 // reset() on a non-null shared pointer 21 { 22 tracked_shared_ptr<T> ptr(&obj, libkern::retain); 23 tracking_policy::reset(); 24 ptr.reset(); 25 CHECK(tracking_policy::releases == 1); 26 CHECK(tracking_policy::retains == 0); 27 CHECK(ptr.get() == nullptr); 28 } 29 30 // reset() on a null shared pointer 31 { 32 tracked_shared_ptr<T> ptr = nullptr; 33 tracking_policy::reset(); 34 ptr.reset(); 35 CHECK(tracking_policy::releases == 0); 36 CHECK(tracking_policy::retains == 0); 37 CHECK(ptr.get() == nullptr); 38 } 39 40 // reset() as a self-reference 41 { 42 tracked_shared_ptr<T> ptr(&obj, libkern::retain); 43 tracked_shared_ptr<T> ptr2(&obj, libkern::retain); 44 CHECK(!ptr.reset()); 45 46 CHECK(&ptr.reset() == &ptr); 47 48 // check short-circuiting 49 bool ok = (ptr.reset() && !ptr2.reset()); 50 CHECK(ptr2.get() != nullptr); 51 } 52 } 53 54 T_DECL(reset, "intrusive_shared_ptr.reset", T_META_TAG_VM_PREFERRED) { 55 tests<T>(); 56 tests<T const>(); 57 } 58