@Test
    public void test_constructor() {
        assertNotNull(crawlJob);
        assertEquals(Constants.CRAWLING_INFO_SYSTEM_NAME, crawlJob.namespace);
        assertNull(crawlJob.webConfigIds);
        assertNull(crawlJob.fileConfigIds);
        assertNull(crawlJob.dataConfigIds);
        assertEquals(-2, crawlJob.documentExpires);
        assertEquals(-1, crawlJob.hotThreadInterval);
    }

    // Test namespace setter

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertInstanceOf;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;

        // When & Then - should handle nulls gracefully
        assertNull(delegatingConfig.getRandom(), "Should return null when delegate returns null");
        assertNull(delegatingConfig.getLocalAddr(), "Should return null when delegate returns null");
        assertNull(delegatingConfig.getNetbiosHostname(), "Should return null when delegate returns null");

        assertEquals(false, kuromojiPager.isExistNextPage());
        assertEquals(25, kuromojiPager.getPageSize());
        assertEquals(1, kuromojiPager.getCurrentPageNumber());
        assertNull(kuromojiPager.id);

        kuromojiPager.setAllRecordCount(999);
        assertEquals(999, kuromojiPager.getAllRecordCount());
        kuromojiPager.setAllPageCount(999);

        assertEquals(false, protwordsPager.isExistNextPage());
        assertEquals(25, protwordsPager.getPageSize());
        assertEquals(1, protwordsPager.getCurrentPageNumber());
        assertNull(protwordsPager.id);

        protwordsPager.setAllRecordCount(999);
        assertEquals(999, protwordsPager.getAllRecordCount());
        protwordsPager.setAllPageCount(999);

        assertEquals(false, stopwordsPager.isExistNextPage());
        assertEquals(25, stopwordsPager.getPageSize());
        assertEquals(1, stopwordsPager.getCurrentPageNumber());
        assertNull(stopwordsPager.id);

        stopwordsPager.setAllRecordCount(999);
        assertEquals(999, stopwordsPager.getAllRecordCount());
        stopwordsPager.setAllPageCount(999);

        concreteBlock.reset();
        assertEquals(0L, concreteBlock.getMid());
        assertEquals(0, concreteBlock.getCommand());
        assertNull(concreteBlock.getDigest());
        assertNull(concreteBlock.getResponse());
    }

        );
        when(mockNdrBuffer.dec_ndr_small()).thenReturn(4, 5);

        dnsDomainInfo.decode(mockNdrBuffer);

        assertNull(dnsDomainInfo.name.buffer);
        assertNull(dnsDomainInfo.dns_domain.buffer);
        assertNull(dnsDomainInfo.dns_forest.buffer);
        assertNull(dnsDomainInfo.sid);
        assertNotNull(dnsDomainInfo.domain_guid.node); // Should be initialized even if null in encode

        WebApiException exception = new WebApiException(statusCode, message);

        assertEquals(statusCode, exception.getStatusCode());
        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withStatusCodeMessageAndCause() {
        // Test constructor with status code, message, and cause
        int statusCode = 500;

        value = "";
        assertEquals("", dataStore.convertValue(Constants.DEFAULT_SCRIPT, value, paramMap));

        value = " ";
        assertNull(dataStore.convertValue(Constants.DEFAULT_SCRIPT, value, paramMap));
    }

    // ========== Thread Safety Tests ==========

    /**
     * Test that the volatile alive field is visible across threads.