return "fess-server";
            }
        });
        try {
            envMap.put("HOSTNAME", "myhost");
            final long pid = ProcessHandle.current().pid();
            assertEquals("fess-server@myhost:" + pid, systemHelper.getInstanceId());
        } finally {
            envMap.remove("HOSTNAME");
        }
    }

    @Test

                return new Tuple3[] { new Tuple3<>("Host", "example.com", "site1"), new Tuple3<>("X-Forwarded-Host", "test.com", "site2") };
            }
        });

        MockletHttpServletRequest request = getMockRequest();

        // No matching host header
        String key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key);

        // Matching host header
        request.addHeader("Host", "example.com");

    /**
     * Displays the initial duplicate host management page.
     *
     * @param form the search form
     * @return HTML response for the duplicate host list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays the duplicate host list with pagination.
     *

    //                                                          ========================

    @Test
    public void test_isValidVirtualHostPath_emptyPath() throws Exception {
        setupVirtualHostHelper();

        Boolean result = invokeIsValidVirtualHostPath("");
        assertTrue("Empty path should be valid (default host)", result);
    }

    @Test

        try {
            final URI uri = new URI(url);
            String host = uri.getHost();
            String path = uri.getPath();

            if (host == null || host.isEmpty()) {
                host = "_local";
            }

            if (path == null || path.isEmpty()) {
                path = "/" + formatter.getIndexFileName();

     *
     * @return the logger instance
     */
    Logger getLogger();

    /**
     * Extracts the host name from a URL string.
     * Removes protocol and path components to return just the hostname.
     *
     * @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) {

        mockBhv.setTestData(testData);

        int count = relatedQueryHelper.load();
        assertEquals(1, count); // One virtual host key (empty)

        String[] results = relatedQueryHelper.getRelatedQueries("java");
        assertEquals(3, results.length);
        assertEquals("programming", results[0]);
        assertEquals("tutorial", results[1]);

        }

        /**
         * Returns the virtual host.
         *
         * @return The virtual host.
         */
        public String getVirtualHost() {
            return virtualHost;
        }

        /**
         * Sets the virtual host.
         *
         * @param virtualHost The virtual host.
         */
        public void setVirtualHost(final String virtualHost) {

        // Test with client parameters
        configParameters = "client.host=localhost\nclient.port=9200";
        result = ParameterUtil.createConfigParameterMap(configParameters);
        assertEquals(2, result.get(ConfigName.CLIENT).size());
        assertEquals("localhost", result.get(ConfigName.CLIENT).get("host"));
        assertEquals("9200", result.get(ConfigName.CLIENT).get("port"));

                        .responseFields(new String[] { fessConfig.getIndexFieldDocId() })
                        .build());
    }

    /**
     * Returns a query map for the specified virtual host.
     *
     * @param key The virtual host key.
     * @return A map of terms and boost information.
     */
    protected Map<String, List<Tuple3<String, QueryBuilder, ScoreFunctionBuilder<?>>>> getQueryMap(final String key) {