// Arrange
        when(handle.hasCapability(anyInt())).thenThrow(new CIFSException("capability check failed"));

        // Act + Assert
        CIFSException ex = assertThrows(CIFSException.class, () -> handle.hasCapability(42));
        assertEquals("capability check failed", ex.getMessage());
        verify(handle).hasCapability(42);
    }

    @Test

- [ ] Implement handle state serialization
- [ ] Create reconnection logic with handle replay
- [ ] Add timeout management for durable handles
- [ ] Implement handle lease association
- [ ] Add persistent handle capability negotiation
- [ ] Create handle cache for reconnection

#### 2.3 Integration Points
- Extend `SmbFile` with persistent handle support
- Modify `SmbSession` for handle replay during reconnection

            transport.ensureConnected();

            // Verify multi-channel capability (SMB3+ required)
            if (!transport.isSMB2() || !transport.hasCapability(0x00000008)) { // SMB2_GLOBAL_CAP_MULTI_CHANNEL
                throw new CIFSException("Server does not support SMB multi-channel capability");
            }

    /**
     * Initialize multi-channel support
     *
     * @throws IOException if initialization fails
     */
    public void initializeMultiChannel() throws IOException {
        // Check server capability
        if (!supportsMultiChannel()) {
            log.info("Server does not support multi-channel");
            return;
        }

        // Query network interfaces from server

        // When
        int mode = response.getSecurityMode();

        // Then
        assertEquals(Smb2Constants.SMB2_NEGOTIATE_SIGNING_REQUIRED, mode);
    }

    @Test
    @DisplayName("Should check capability correctly")
    void testHaveCapability() throws Exception {
        // Given
        setPrivateField(response, "commonCapabilities", 0x2F); // 0010 1111

        // Then

        response.getServerData().smaxMpxCount = 1;
        response.getServerData().maxBufferSize = 16384;

        assertTrue(response.isValid(mockContext, request));
        // After negotiation, check if unicode capability is preserved
        assertTrue((response.getNegotiatedCapabilities() & SmbConstants.CAP_UNICODE) != 0);
    }

    @Test
    public void testIsValidWithInvalidDialect() {

            if (message.contains("hardware") || message.contains("device not found") || message.contains("driver")
                    || message.contains("not supported") || message.contains("capability")) {
                return true;
            }
        }

        // If we've had many errors, consider fallback
        double errorRate = statistics.getErrorRate();

        assertEquals(0x4000, SmbConstants.FLAGS2_STATUS32);
        assertEquals(0x8000, SmbConstants.FLAGS2_UNICODE);
    }

    @Test
    @DisplayName("Should define capability constants")
    void testCapabilityConstants() {
        assertEquals(0x0000, SmbConstants.CAP_NONE);
        assertEquals(0x0001, SmbConstants.CAP_RAW_MODE);
        assertEquals(0x0002, SmbConstants.CAP_MPX_MODE);

        when(s.isClosed()).thenReturn(true);
        assertTrue(transport.isDisconnected());
        assertTrue(transport.isFailed());
    }

    @Test
    @DisplayName("capability query delegates to negotiation state")
    void hasCapability_delegates() throws Exception {
        // Arrange
        SmbNegotiationResponse nego = mock(SmbNegotiationResponse.class);

    }

    // SMB1 path: without CAP_NT_SMBS it should throw SmbUnsupportedOperationException
    @Test
    @DisplayName("watch() SMB1 without capability throws unsupported")
    void watch_smb1_noCapability_throwsUnsupported() throws Exception {
        when(handle.isValid()).thenReturn(true);
        when(handle.getTree()).thenReturn(tree);