xnu-7195.50.7.100.1.tar.gz

[apple/xnu.git] / tests / intrusive_shared_ptr_src / dtor.cpp

diff --git a/tests/intrusive_shared_ptr_src/dtor.cpp b/tests/intrusive_shared_ptr_src/dtor.cpp
new file mode 100644 (file)
index 0000000..dd5bc0c
--- /dev/null
+++ b/tests/intrusive_shared_ptr_src/dtor.cpp
@@ -0,0 +1,38 @@
+//
+// Tests for
+//  ~intrusive_shared_ptr();
+//
+
+#include <libkern/c++/intrusive_shared_ptr.h>
+#include <darwintest.h>
+#include <darwintest_utils.h>
+#include "test_policy.h"
+
+struct T { int i; };
+
+T_DECL(dtor, "intrusive_shared_ptr.dtor") {
+       // Destroy a non-null shared pointer
+       {
+               T obj{0};
+               test_policy::retain_count = 3;
+
+               {
+                       libkern::intrusive_shared_ptr<T, test_policy> ptr(&obj, libkern::no_retain);
+                       CHECK(test_policy::retain_count == 3);
+               }
+
+               CHECK(test_policy::retain_count == 2);
+       }
+
+       // Destroy a null shared pointer
+       {
+               test_policy::retain_count = 3;
+
+               {
+                       libkern::intrusive_shared_ptr<T, test_policy> ptr = nullptr;
+                       CHECK(test_policy::retain_count == 3);
+               }
+
+               CHECK(test_policy::retain_count == 3); // not decremented
+       }
+}