final QueryThread q20 = new QueryThread(sem, name, 0x20, null, svr);
        q1x.setDaemon(true);
        q20.setDaemon(true);
        try {
            synchronized (sem) {
                q1x.start();
                q20.start();

                while (sem.count > 0 && q1x.ans == null && q20.ans == null) {
                    sem.wait();
                }

    }

    // Test evaluate method with null parameter value
    public void test_evaluate_withNullParameterValue() {
        String template = "Value is: ${value}";
        Map<String, Object> paramMap = new HashMap<>();
        paramMap.put("value", null);

        Object result = scriptEngine.evaluate(template, paramMap);
        assertEquals("Value is: null", result);
    }

    public void test_add_nullDataStore() {
        try {
            dataStoreFactory.add("testName", null);
            fail("Should throw IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            assertEquals("name or dataStore is null.", e.getMessage());
        }
    }

    // Test add method with both null parameters
    public void test_add_bothNull() {
        try {

    }

    // Test register with null factory throws exception
    public void test_register_nullFactory() {
        ComponentUtil.register(null, "scriptEngineFactory");

        try {
            testScriptEngine.register();
            fail("Should throw exception when factory is null");
        } catch (NullPointerException e) {
            // Expected exception
        }

    public Suggester build(final Client client, final String id) {
        if (settings == null) {
            if (settingsBuilder == null) {
                settingsBuilder = SuggestSettings.builder();
            }
            settings = settingsBuilder.build(client, id);
        }
        settings.init();

        if (readingConverter == null) {
            readingConverter = SuggestUtil.createDefaultReadingConverter(client, settings);

        if (StringUtil.isBlank(requestPath)) {
            return null;
        }
        final String virtualHostKey = ComponentUtil.getVirtualHostHelper().getVirtualHostKey();
        if (StringUtil.isBlank(virtualHostKey)) {
            return null;
        }
        final String prefix = "/" + virtualHostKey;
        if (requestPath.startsWith(prefix)) {

        // Test with a null source array
        ByteEncodable encodable = new ByteEncodable(null, 0, 0);
        byte[] dest = new byte[1];

        // Expect NullPointerException from System.arraycopy
        assertThrows(NullPointerException.class, () -> {
            encodable.encode(dest, 0);
        }, "Should throw NullPointerException if source array is null");
    }

    @Test

     *
     * @param o
     *            The object to convert
     * @return The converted {@link Boolean}
     */
    public static Boolean toBoolean(final Object o) {
        return switch (o) {
        case null -> null;
        case Boolean b -> b;
        case Number n -> n.intValue() != 0;
        case String s -> switch (s.toLowerCase()) {
        case "true" -> Boolean.TRUE;
        case "false", "0" -> Boolean.FALSE;

            }
        }
        final Integer id = fessConfig.getAvailableSmbSidType(type);
        if (id != null) {
            return createSearchRole(id, sid.getAccountName());
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Ignored SID: {} {}", type, sid);
        }
        return null;
    }

    /**
     * Gets the account ID from a SID.
     * @param sid The SID.

    }

    @Override
    public void tearDown() throws Exception {
        crawlerEngineClient = null;
        super.tearDown();
    }

    // Test constructor
    public void test_constructor() {
        // Test that constructor creates a non-null instance
        assertNotNull(crawlerEngineClient);
    }

    // Test inheritance
    public void test_inheritance() {