}

    @Test
    public void test_createForm_initialize() {
        final CreateForm form = new CreateForm();
        assertNull(form.crudMode);
        assertNull(form.name);
        assertNull(form.password);
        assertNull(form.confirmPassword);
        assertNotNull(form.attributes);
        assertTrue(form.attributes.isEmpty());

        form.initialize();

        String type = null;
        String message = null;
        InvalidAccessTokenException exception = new InvalidAccessTokenException(type, message);

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

    @Test
    public void test_constructor_withEmptyType() {
        // Test constructor with empty type string
        String type = "";

        // Verify
        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getMessageCode());
    }

    @Test
    public void test_constructor_twoParametersWithNullMessageCode() {
        // Setup
        final String message = "Test message";

        // Execute

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertTrue(exception instanceof FessSystemException);
    }

    @Test
    public void test_constructorWithNullCause() {
        // Test constructor with null cause
        SearchQueryException exception = new SearchQueryException((Throwable) null);

        assertNull(exception.getCause());

    )
  }

  @Test fun nonBasicCodePointInPrefix() {
    assertNull(Punycode.decode("xn--cåt-n3h"))
  }

  @Test fun nonBasicCodePointInInsertionCoding() {
    assertNull(Punycode.decode("xn--cat-ñ3h"))
  }

  @Test fun unterminatedCodePoint() {
    assertNull(Punycode.decode("xn--cat-n"))
  }

  @Test fun overflowI() {
    assertNull(Punycode.decode("xn--99999999"))
  }

        assertNull(config.getNetbiosHostname());
        assertNull(config.getLocalAddr());
        assertNull(config.getBroadcastAddress());
        assertNull(config.getResolveOrder());
        assertNotNull(config.getWinsServers());
        assertEquals(0, config.getWinsServers().length);
        assertEquals(0, config.getNetbiosLocalPort());
        assertNull(config.getNetbiosLocalAddress());

        crawlerStatsHelper.done(key);
        assertNull(localLogMsg.get());
    }

    @Test
    public void test_beginWithRecordAndDiscard() {
        String key = "test";
        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, "aaa");
        crawlerStatsHelper.discard(key);
        logger.info(localLogMsg.get());
        assertNull(localLogMsg.get());

        Map<String, Object> map = new HashMap<>();
        map.put("key", null);

        assertNull(MapValueExtractor.getString(map, "key"));
    }

    @Test
    public void testGetString_withMissingKey() {
        Map<String, Object> map = new HashMap<>();

        assertNull(MapValueExtractor.getString(map, "missing"));
    }

    @Test
    public void testGetString_withDefaultValue() {

        // Verify
        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getMessageCode());
    }

    @Test
    public void test_constructor_twoParametersWithNullMessageCode() {
        // Setup
        final String message = "Query error without message code";

        assertEquals(25, relatedQueryPager.getPageSize());
        assertEquals(1, relatedQueryPager.getCurrentPageNumber());
        assertNull(relatedQueryPager.id);
        assertNull(relatedQueryPager.term);
        assertNull(relatedQueryPager.versionNo);

        relatedQueryPager.setAllRecordCount(999);
        assertEquals(999, relatedQueryPager.getAllRecordCount());