// Test constructor with null message
        LdapOperationException exception = new LdapOperationException(null);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with null message and null cause

        // Test constructor with null message
        ScriptEngineException exception = new ScriptEngineException(null);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with null message and null cause

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown(testInfo);
    }

    // Test constructor with null query string
    @Test
    public void test_constructor_nullQueryString() {
        queryContext = new QueryContext(null, false);
        assertEquals("*", queryContext.getQueryString());
        assertNull(queryContext.getDefaultField());

        StopwordsFile.StopwordsUpdater updater = stopwordsFile.new StopwordsUpdater(null);

        StopwordsItem result = updater.commit();
        assertNull(result);

        updater.close();
    }

    @Test
    public void test_updater_writeLine() {
        StopwordsFile.StopwordsUpdater updater = stopwordsFile.new StopwordsUpdater(null);

        // Test writing a comment line

# o dbfluteBeansFileName: (NotRequired - Default 'dbfluteBeans.xml')
# o dbfluteBeansDataSourceName: (NotRequired - Default 'dataSource')
# o dbfluteBeansDefaultAttribute: (NotRequired - Default null)
# o isDBFluteBeansGeneratedAsJavaConfig (NotRequired - Default true since 1.1)
#
# {Java} Seasar Only:
# o dbfluteDiconNamespace: (NotRequired - Default 'dbflute')

     */
    public String getInput() {
        return input;
    }

    /**
     * Gets the input value or empty string if null.
     * @return the input value or empty string
     */
    public String getInputValue() {
        if (input == null) {
            return StringUtil.EMPTY;
        }
        return input;
    }

    /**
     * Checks if this item has been updated.

        try {
            assertNull(actionHook.godHandPrologue(null, runtime -> null));
            assertNull(actionHook.godHandMonologue(null, runtime -> null));
            actionHook.godHandEpilogue(null, runtime -> {});
            assertNull(actionHook.hookBefore(null, runtime -> null));
            actionHook.hookFinally(null, runtime -> {});
            assertTrue(true);
        } catch (Exception e) {

            }
        }, DataConfigService.class.getCanonicalName());
    }

    @Test
    public void test_getConfigType() {
        assertNull(crawlingConfigHelper.getConfigType(null));
        assertNull(crawlingConfigHelper.getConfigType(""));
        assertNull(crawlingConfigHelper.getConfigType("XXX"));
        assertNull(crawlingConfigHelper.getConfigType("W"));

        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        url = null;
        threadName = null;
        errorCount = null;
        lastAccessTime = null;
        errorCountMin = null;
        errorCountMax = null;
        errorName = null;

    }

    /**
     * Gets the default current page number.
     *

                logger.warn("Could not add document: url field is missing or null");
                return;
            }

            final String url = dataMap.get(fessConfig.getIndexFieldUrl()).toString();
            final CrawlerClient client = crawlerClientFactory.getClient(url);
            if (client == null) {