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

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

        assertNull(exception.getCause());

    }

    public void test_getConfigType() {
        assertNull(crawlingConfigHelper.getConfigType(null));
        assertNull(crawlingConfigHelper.getConfigType(""));
        assertNull(crawlingConfigHelper.getConfigType("XXX"));
        assertNull(crawlingConfigHelper.getConfigType("W"));
        assertNull(crawlingConfigHelper.getConfigType("F"));
        assertNull(crawlingConfigHelper.getConfigType("D"));

    assertEquals("get(present) should return the associated value", v0(), get(k0()));
  }

  public void testGet_no() {
    assertNull("get(notPresent) should return null", get(k3()));
  }

  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
  public void testGet_nullNotContainedButAllowed() {
    assertNull("get(null) should return null", get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)

        Smb2LeaseKey key = leaseManager.requestLease(path, requestedState);
        assertNotNull(leaseManager.getLease(key));

        leaseManager.releaseLease(key);

        assertNull(leaseManager.getLease(key));
        assertNull(leaseManager.getLeaseByPath(path));
    }

    @Test
    @DisplayName("Should get lease by path")
    void testGetLeaseByPath() {
        String path = "/share/document.doc";

        assertNull(((SitemapUrl) sitemaps[1]).getChangefreq());
        assertNull(((SitemapUrl) sitemaps[1]).getPriority());

        assertNull(sitemaps[2].getLastmod());
        assertEquals("http://www.example.com/catalog?item=73&desc=vacation_new_zealand", sitemaps[2].getLoc());
        assertNull(((SitemapUrl) sitemaps[2]).getChangefreq());
        assertNull(((SitemapUrl) sitemaps[2]).getPriority());

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

    public void test_constructor_withNullMessage() {
        // Test with null message
        LdapConfigurationException exception = new LdapConfigurationException(null);

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

            // If JAAS is not configured and getSubject() returns null, verify cloning still works
            assertNull(first, "First call to getSubject() returned null - JAAS not configured");

            // Clone should also return null for getSubject() calls
            Subject copySubj = copy.getSubject();
            assertNull(copySubj, "Clone should also return null when original has null cached subject");

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

    public void test_beginDoneWithRecordOnLazy() {
        String key = "test";
        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, "aaa");
        crawlerStatsHelper.runOnThread(key);
        crawlerStatsHelper.done(key);
        logger.info(localLogMsg.get());
        assertNull(localLogMsg.get());

        assertEquals(expectedStatus, ex.getNtStatus(), "status should map based on code");
        assertNull(ex.getCause(), "cause must be null for int constructor");
        assertNull(ex.getRootCause(), "rootCause must be null for int constructor");
    }

    /**
     * Validate message-only constructor with both null and empty messages.
     */

                    return null;
                }
                return createMockRescorerBuilder();
            }
        };

        assertNull(queryRescorer.evaluate(Collections.emptyMap()));
        assertNull(queryRescorer.evaluate(new HashMap<>()));
    }

    public void test_evaluate_withParams() {
        // Test implementation that returns a RescorerBuilder