assertNull(user.getDepartmentNumber());

        user.setDepartmentNumber("DEPT001");
        assertEquals("DEPT001", user.getDepartmentNumber());
    }

    @Test
    public void test_user_description() {
        final User user = new User();
        assertNull(user.getDescription());

        user.setDescription("Test user description");
        assertEquals("Test user description", user.getDescription());