assertEquals(user, chain1.lastDeletedUser);
        assertEquals(user, chain2.lastDeletedUser);
        assertEquals(user, chain3.lastDeletedUser);
    }

    // Test load with no chains
    public void test_load_noChains() {
        User user = createTestUser("testuser");
        User result = authenticationManager.load(user);
        assertEquals(user, result);
    }

    // Test load with single chain