assertThrows(SmbException.class, () -> {
            validator.validateString("test\u0001string", 100, "test");
        });
    }

    @Test
    public void testStringWithAllowedWhitespace() throws Exception {
        validator.validateString("test\tstring", 100, "test");
        validator.validateString("test\r\nstring", 100, "test");
        // Should pass without exception
    }