assertNull(user.getStreet());

        user.setStreet("123 Main St");
        assertEquals("123 Main St", user.getStreet());
    }

    @Test
    public void test_user_teletexTerminalIdentifier() {
        final User user = new User();
        assertNull(user.getTeletexTerminalIdentifier());

        user.setTeletexTerminalIdentifier("TTI001");