assertNull(user.getTelephoneNumber());

        user.setTelephoneNumber("123-456-7890");
        assertEquals("123-456-7890", user.getTelephoneNumber());
    }

    @Test
    public void test_user_homePhone() {
        final User user = new User();
        assertNull(user.getHomePhone());

        user.setHomePhone("098-765-4321");
        assertEquals("098-765-4321", user.getHomePhone());
    }