if (smbUrl == null || smbUrl.isEmpty()) {
            throw new SmbException("SMB URL cannot be null or empty");
        }

        // Check URL format
        if (!smbUrl.toLowerCase().startsWith("smb://")) {
            throw new SmbException("Invalid SMB URL format");
        }

        try {
            URL url = new URL(null, smbUrl, new jcifs.smb.Handler());

            // Validate host

    @Test
    public void test_settersAndGetters() {
        final ChatSession session = new ChatSession();
        final LocalDateTime createdAt = LocalDateTime.of(2025, 1, 1, 10, 0);
        final LocalDateTime lastAccessedAt = LocalDateTime.of(2025, 1, 1, 11, 0);
        final List<ChatMessage> messages = new ArrayList<>();

        session.setSessionId("session-456");
        session.setUserId("user-789");

        List<FileNotifyInformation> info = new ArrayList<>();
        NotifyResponse resp = mock(NotifyResponse.class);
        when(resp.isReceived()).thenReturn(true);
        when(resp.getErrorCode()).thenReturn(0);
        when(resp.getNotifyInformation()).thenReturn(info);
        setupSmb2(resp, new byte[16]);
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(handle, 0x1234, true);

    void testType1MessageFromBytes() throws IOException {
        // Given - Create a Type 1 message and convert to bytes
        Type1Message original = new Type1Message(mockContext);
        byte[] messageBytes = original.toByteArray();

        // When
        Type1Message parsed = new Type1Message(messageBytes);

        // Then
        // Note: getType() method does not exist in Type1Message

  public void testExecute() {
    MockExecutor mock = new MockExecutor();
    TestExecutor testExecutor = new TestExecutor(mock);
    testExecutor.execute(doNothing());
    mock.assertLastMethodCalled("execute");
  }

  public void testSubmit() throws InterruptedException, ExecutionException {
    {
      MockExecutor mock = new MockExecutor();
      TestExecutor testExecutor = new TestExecutor(mock);

        principalVector.add(new DERTaggedObject(true, 0, new ASN1Integer(1))); // name-type
        principalVector.add(new DERTaggedObject(true, 1, new DERSequence(principalNameVector)));
        v.add(new DERTaggedObject(true, 2, new DERSequence(principalVector)));

        ASN1EncodableVector encPart = new ASN1EncodableVector();
        encPart.add(new DERTaggedObject(true, 0, new ASN1Integer(encType)));

    @Override
    public Set<K> keySet() {
      return new StandardKeySet();
    }

    @Override
    public Collection<V> values() {
      return new StandardValues();
    }

    @Override
    public String toString() {
      return standardToString();
    }

    @Override
    public Set<Entry<K, V>> entrySet() {
      return new StandardEntrySet() {
        @Override

    void setUp() throws UnknownHostException {
        failover = new ChannelFailover(mockChannelManager);

        InetAddress addr = InetAddress.getByName("192.168.1.100");
        NetworkInterfaceInfo localInterface = new NetworkInterfaceInfo(addr, 1000);
        NetworkInterfaceInfo remoteInterface = new NetworkInterfaceInfo(addr, 1000);

        failedChannel = new ChannelInfo("failed-channel", mockTransport, localInterface, remoteInterface);

        this.lastActivityTime = establishedTime;
        
        this.bytesSent = new AtomicLong();
        this.bytesReceived = new AtomicLong();
        this.requestsSent = new AtomicLong();
        this.requestsReceived = new AtomicLong();
        this.errors = new AtomicLong();
        
        this.isPrimary = false;
    }
    
    public void updateActivity() {

  @GwtIncompatible // Iterables.filter(Iterable, Class)
  public void testFilterByType_iterator() throws Exception {
    HasBoth hasBoth = new HasBoth();
    Iterable<TypeA> alist = Lists.newArrayList(new TypeA(), new TypeA(), hasBoth, new TypeA());
    Iterable<TypeB> blist = filter(alist, TypeB.class);
    assertThat(blist).containsExactly(hasBoth).inOrder();
  }