Test self assignment

tests.cpp

@@ -167,6 +167,17 @@ void test_copy_assignment_decrements_previous_reference()
     assert(mybase_destruct == destructed_before + 2);
 }
 
+void test_self_assignment()
+{
+    int destructed_before = mybase_destruct;
+    MyB a = MyB::create(1, 2);
+    a = a;
+    assert(a);
+    assert(a->x == 1);
+    assert(a.use_count() == 1);
+    assert(mybase_destruct == destructed_before);
+}
+
 void test_move_constructor()
 {
     int constructed_before = mybase_construct;
@@ -415,6 +426,7 @@ int main(int argc, char * argv[])
     test_multi_construct_from_raw_pointers();
     test_listener_self_registration();
     test_copy_assignment_decrements_previous_reference();
+    test_self_assignment();
     test_cross_type_comparison();
     test_reset();
     test_move_constructor();