assertThrows(SmbException.class, () -> {
            validator.validateSmbUrl("smb://server/share/../../../etc/passwd");
        });
    }

    @Test
    public void testBlacklist() throws Exception {
        validator.addToBlacklist("\\share\\forbidden");

        // Should block blacklisted path
        try {
            validator.validatePath("\\share\\forbidden\\file.txt");