assertFalse(CharUtil.isUrlChar('<')); // less than
        assertFalse(CharUtil.isUrlChar('>')); // greater than
        assertFalse(CharUtil.isUrlChar('"')); // double quote
        assertFalse(CharUtil.isUrlChar('\\')); // backslash
        assertFalse(CharUtil.isUrlChar('`')); // backtick
    }

    public void test_isUrlChar_controlCharacters() {
        // Test control characters

    }

    static final NtlmPasswordAuthentication NULL = new NtlmPasswordAuthentication("", "", "");
    static final NtlmPasswordAuthentication GUEST = new NtlmPasswordAuthentication("?", "GUEST", "");
    static final NtlmPasswordAuthentication DEFAULT = new NtlmPasswordAuthentication(null);

    /** The authentication domain */
    String domain;
    /** The username for authentication */

    @DisplayName("isAnonymous and isGuest are always false")
    void testIsAnonymousAndGuestFalse() {
        JAASAuthenticator auth = new JAASAuthenticator();
        // JAAS-based authenticator should never be anonymous or guest
        assertFalse(auth.isAnonymous());
        assertFalse(auth.isGuest());
    }

    @ParameterizedTest
    @EnumSource(SubjectVariant.class)
    @DisplayName("getSubject: caches results and refresh resets cache")

        final long elapsed = (System.nanoTime() - start) / 1000000;

        assertTrue("file:// URLs should not be delayed", elapsed < 50);
    }

    /**
     * Test that null URL queue is handled gracefully
     */
    public void test_nullUrlQueue() {
        final HostIntervalController controller = new HostIntervalController();
        controller.delayMillisBeforeProcessing = 1000L;

                return true;
            }
        }
        return false;
    }

    /**
     * Processes the result data and stores it along with child URLs.
     *
     * @param urlQueue the URL queue entry
     * @param responseData the response data
     * @param resultData the result data
     */
    protected void processResult(final UrlQueue<?> urlQueue, final ResponseData responseData, final ResultData resultData) {

    /** Atomic flag indicating whether the crawler is currently running. */
    private static AtomicBoolean running = new AtomicBoolean(false);

    /** Thread-safe queue for collecting error messages during crawling operations. */
    private static Queue<String> errors = new ConcurrentLinkedQueue<>();

    /** Injected search engine client for OpenSearch operations. */
    @Resource

                            throw sae;
                        } catch (final SmbException se) {
                            ex = se;
                        }

                        if (response.isLoggedInAsGuest && !"GUEST".equalsIgnoreCase(auth.username)
                                && transport.server.security != SmbConstants.SECURITY_SHARE
                                && auth != NtlmPasswordAuthentication.ANONYMOUS) {

        }
    }

    /**
     * Stores a failure URL with error information for later analysis.
     *
     * @param crawlerContext the crawler context
     * @param urlQueue the URL queue containing the failed URL
     * @param errorName the name/type of the error
     * @param e the throwable that caused the failure
     * @return the stored FailureUrl entity
     */

        }
        source = source.replaceAll(Pattern.quote("${fess.dictionary.path}"), dictionaryPath)//
                .replaceAll(Pattern.quote("${fess.index.codec}"), fessConfig.getIndexCodec())//
                .replaceAll(Pattern.quote("${fess.index.number_of_shards}"), numberOfShards)//
                .replaceAll(Pattern.quote("${fess.index.auto_expand_replicas}"), autoExpandReplicas);

										class="fa fa-exclamation-triangle text-warning"
									></a></li>
							</c:if>
							<c:choose>
								<c:when test="${!empty username && username != 'guest'}">
									<li class="nav-item">
										<div class="dropdown">
											<a id="userMenu" class="nav-link dropdown-toggle" data-bs-toggle="dropdown"
												href="#" role="button" aria-haspopup="true"