@GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(new FakeTicker());
  }

  @GwtIncompatible // java.time.Duration
  public void testAdvance() {
    FakeTicker ticker = new FakeTicker();
    assertEquals(0, ticker.read());
    assertSame(ticker, ticker.advance(10));
    assertEquals(10, ticker.read());

        Properties props = new Properties();
        props.setProperty("jcifs.smb.client.useMultiChannel", "false");

        PropertyConfiguration config = new PropertyConfiguration(props);
        assertFalse(config.isUseMultiChannel());

        props.setProperty("jcifs.smb.client.useMultiChannel", "true");
        config = new PropertyConfiguration(props);
        assertTrue(config.isUseMultiChannel());

  @Override
  public void setUp() {
    fakePool = new FakeExecutor();
    e = new SequentialExecutor(fakePool);
  }

  public void testConstructingWithNullExecutor_fails() {
    assertThrows(NullPointerException.class, () -> new SequentialExecutor(null));
  }

  public void testBasics() {
    AtomicInteger totalCalls = new AtomicInteger();
    Runnable intCounter =
        new Runnable() {
          @Override

    @Test
    @DisplayName("readn should handle EOF correctly")
    void testReadnEOF() throws IOException {
        byte[] buffer = new byte[10];
        ByteArrayInputStream bais = new ByteArrayInputStream(new byte[0]);

        int bytesRead = SessionServicePacket.readn(bais, buffer, 0, 5);

        assertEquals(0, bytesRead);
    }

    @Test
    @DisplayName("readn should handle multiple read calls")

            byte[] emptyFileId = new byte[16];
            assertDoesNotThrow(() -> new Smb2WriteRequest(mockConfig, emptyFileId));
        }
    }

    @Nested
    @DisplayName("FileId Tests")
    class FileIdTests {

        @Test
        @DisplayName("Should set file ID correctly")
        void testSetFileId() {
            byte[] newFileId = new byte[16];
            new SecureRandom().nextBytes(newFileId);

    /** Map of input file extensions to output extensions. */
    private final Map<String, String> extensionMap = new HashMap<>();

    /** Map of output extensions to their corresponding extractors. */
    private final Map<String, Extractor> extractorMap = new HashMap<>();

    /**
     * Constructs a new JodExtractor and initializes the extension and extractor mappings.
     */
    public JodExtractor() {

        MockitoAnnotations.openMocks(this);
        testMessage = new TestServerMessageBlock2(mockConfig);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create with configuration only")
        void testConstructorWithConfig() {
            ServerMessageBlock2 msg = new TestServerMessageBlock2(mockConfig);
            assertNotNull(msg);

// Create suggestion item with text, readings, and metadata
String[][] readings = new String[2][];
readings[0] = new String[]{"kensaku", "engine"};
readings[1] = new String[]{"search", "injin"};

String[] tags = new String[]{"technology", "search"};
String[] roles = new String[]{"admin", "user"};

SuggestItem item = new SuggestItem(
    new String[]{"Search Engine", "検索エンジン"}, // text variations

  private final ExecutionList list = new ExecutionList();

  public void testRunOnPopulatedList() throws Exception {
    Executor exec = newCachedThreadPool();
    CountDownLatch countDownLatch = new CountDownLatch(3);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);

        SmbFileHandleImpl hA = id1 != null ? new SmbFileHandleImpl(cfg, id1, tA, "//eq/a", 0, 0, 0, 0, 0L)
                : new SmbFileHandleImpl(cfg, 33, tA, "//eq/a", 0, 0, 0, 0, 0L);

        SmbFileHandleImpl hB = id2 != null ? new SmbFileHandleImpl(cfg, id2, tB, "//eq/b", 0, 0, 0, 0, 0L)
                : new SmbFileHandleImpl(cfg, 33, tB, "//eq/b", 0, 0, 0, 0, 0L);

        if (expectEqual) {