String value;
        String[] result;

        // Empty fields between commas
        value = ",,";
        result = KuromojiCSVUtil.parse(value);
        assertEquals(3, result.length);
        assertEquals("", result[0]);
        assertEquals("", result[1]);
        assertEquals("", result[2]);

        // Mixed empty and non-empty
        value = "first,,third,";

        assertEquals(Long.valueOf(5), facetInfo.minDocCount);
        assertEquals("count.desc", facetInfo.sort);
        assertEquals("unknown", facetInfo.missing);
    }

    // Test init with empty fields
    @Test
    public void test_init_withEmptyFields() {
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getQueryFacetFields() {

                                            </tr>
                                            </thead>
                                            <tbody>
                                            <c:if test="${not empty path and not empty parentId}">
                                                <tr data-href="${contextPath}/admin/storage/list/${f:u(data.parentId)}/" role="button" tabindex="0">
                                                    <td>..</td>

        // Execute
        OptionalThing<Locale> result = provider.findBusinessLocale(null, mockRequestManager);

        // Verify - should return empty when parameter name is blank
        assertFalse(result.isPresent());
    }

    // Test findBusinessLocale with null parameter name
    @Test
    public void test_findBusinessLocale_withNullParameterName() {

                               aria-controls="listSearchForm"><i class="fas fa-search" aria-hidden="true"></i></a>
                            <div class="collapse <c:if test="${!empty name || !empty paths || !empty description}">show</c:if>" id="listSearchForm">
                                <la:form action="/admin/fileconfig/">
                                    <div class="form-group row">

        assertNotNull(target);
    }

    @Test
    public void test_expired_emptyBuffer() {
        // expired() with empty buffer is no-op (no exception)
        logNotificationTarget.expired();
    }

    @Test
    public void test_flush_callsExpired() {
        // flush() delegates to expired(); with empty buffer, no-op (no exception)
        logNotificationTarget.flush();
    }

    @Test

     * Extracts the virtual host key from a RelatedContent entity.
     * If the virtual host is blank or null, returns an empty string.
     * This key is used to organize related content by virtual host.
     *
     * @param entity the RelatedContent entity to extract the host key from
     * @return the virtual host key, or empty string if not specified
     */
    protected String getHostKey(final RelatedContent entity) {

							<div id="emptyState" class="empty-state">
								<div class="empty-state-icon">
									<i class="fa fa-comments" aria-hidden="true"></i>
								</div>
								<h5 class="empty-state-title"><la:message key="labels.chat_welcome_title" /></h5>
								<p class="empty-state-description"><la:message key="labels.chat_welcome_description" /></p>
							</div>
						</div>

     *
     * @param u the URL string to extract host from
     * @return the host name, or empty string if URL is blank, or unknown hostname if parsing fails
     */
    default String getHost(final String u) {
        if (StringUtil.isBlank(u)) {
            return StringUtil.EMPTY; // empty
        }

        String url = u;
        final String originalUrl = url;

        int idx = url.indexOf("://");

        return new FessUserBean(user);
    }

    /**
     * Gets the cookie remember-me key for persistent login.
     * Currently returns empty as remember-me functionality is not enabled.
     *
     * @return an optional thing containing the remember-me key, or empty if not configured
     */
    @Override
    protected OptionalThing<String> getCookieRememberMeKey() {
        // example to use remember-me