diff --git a/tests.cpp b/tests.cpp
index ec4c4de..2bc0a43 100644
--- a/tests.cpp
+++ b/tests.cpp
@@ -152,10 +152,17 @@ void test_listener_self_registration()
 
 void test_copy_assignment_decrements_previous_reference()
 {
-    MyB myb = MyB::create(12, 13);
-    MyB myb2 = MyB::create(14, 15);
-    myb = myb2;
-    assert(myb->x == 14);
+    int constructed_before = mybase_construct;
+    int destructed_before = mybase_destruct;
+    {
+        MyB myb = MyB::create(12, 13);
+        MyB myb2 = MyB::create(14, 15);
+        myb = myb2;
+        assert(myb->x == 14);
+        assert(mybase_destruct == destructed_before + 1);
+    }
+    assert(mybase_construct == constructed_before + 2);
+    assert(mybase_destruct == destructed_before + 2);
 }
 
 void test_move_constructor()