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

    @Test
    public void test_constructorWithString_null() {
        // Test with null message
        JobNotFoundException exception = new JobNotFoundException((String) null);

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

    @Test

        assertNull(dfsResolver.getDc(mockContext, "anyDomain"));
    }

    // Test for resolve method
    @Test
    void testResolve_DfsDisabled() throws CIFSException {
        when(mockConfig.isDfsDisabled()).thenReturn(true);
        assertNull(dfsResolver.resolve(mockContext, "anyDomain", "anyRoot", "anyPath"));
    }

    @Test

  @CollectionSize.Require(ZERO)
  public void testEmptySetPollFirst() {
    assertNull(navigableSet.pollFirst());
  }

  @CollectionSize.Require(ZERO)
  public void testEmptySetNearby() {
    assertNull(navigableSet.lower(e0()));
    assertNull(navigableSet.floor(e0()));
    assertNull(navigableSet.ceiling(e0()));
    assertNull(navigableSet.higher(e0()));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)

        assertEquals(25, elevateWordPager.getPageSize());
        assertEquals(1, elevateWordPager.getCurrentPageNumber());
        assertNull(elevateWordPager.id);
        assertNull(elevateWordPager.suggestWord);
        assertNull(elevateWordPager.versionNo);

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

        assertEquals(25, fileConfigPager.getPageSize());
        assertEquals(1, fileConfigPager.getCurrentPageNumber());
        assertNull(fileConfigPager.id);
        assertNull(fileConfigPager.name);
        assertNull(fileConfigPager.versionNo);

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

        assertNull(dfsImpl.getDc(mockContext, "anydomain.com"));
    }

    @Test
    void testGetDc_ConnectionFails() throws SmbAuthException {
        // Scenario: Transport connection fails when getting DC
        when(mockCredentials.getUserDomain()).thenReturn("authdomain.com");
        // When transport fails to connect, getDc returns null
        assertNull(dfsImpl.getDc(mockContext, "anydomain.com"));

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

    @Test
    public void test_constructorWithNullMessageAndCause() {
        // Test constructor with null message and null cause
        StorageException exception = new StorageException(null, null);

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

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withUnicodeCharacters() {
        // Test with username containing Unicode characters
        String username = "ユーザー名";
        FessUserNotFoundException exception = new FessUserNotFoundException(username);

        assertNotNull(exception);
        assertEquals("User is not found: ユーザー名", exception.getMessage());
        assertNull(exception.getCause());

        assertNull(result.getQuery());
        assertEquals("summary request", result.getReasoning());
    }

    @Test
    public void test_summary_withNullDocumentUrl() {
        final IntentDetectionResult result = IntentDetectionResult.summary(null, "no doc url");

        assertEquals(ChatIntent.SUMMARY, result.getIntent());
        assertNull(result.getDocumentUrl());
    }

    @Test

                assertFalse(iterator3.hasNext(), "Third instance should have no elements");

                assertNull(iterator1.next(), "First instance next() should return null");
                assertNull(iterator2.next(), "Second instance next() should return null");
                assertNull(iterator3.next(), "Third instance next() should return null");
            } catch (CIFSException e) {