when(handle.isValid()).thenReturn(true);
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(handle, 0, false);

        sut.close();

        verify(handle, times(1)).close(0L);
    }

    // close() should do nothing when handle is invalid
    @Test
    @DisplayName("close() does nothing when handle invalid")

        assertFalse(target.isOpen());
        assertFalse(target.isStale());

        // After ensureOpen, handle valid -> open
        SmbFileHandleImpl fh = target.ensureOpen();
        assertSame(fileHandle, fh);
        assertTrue(target.isOpen());
        assertFalse(target.isStale());

        // If handle becomes invalid, reflect stale

     *
     * @param handle the DCE/RPC handle for communication
     * @param server the server name (null defaults to local server)
     * @param access the desired access rights
     * @throws IOException if an I/O error occurs during handle creation
     */
    public SamrPolicyHandle(final DcerpcHandle handle, String server, final int access) throws IOException {
        this.handle = handle;
        if (server == null) {

    }

    /**
     * Sets the context handle for unregistration.
     *
     * @param contextHandle the context handle from registration
     */
    public void setContextHandle(byte[] contextHandle) {
        this.contextHandle = contextHandle != null ? contextHandle.clone() : null;
    }

    /**
     * Gets the context handle.
     *
     * @return the context handle
     */
    public byte[] getContextHandle() {

    /**
     * Checks if this tree handle refers to the same tree as another
     * @param th the tree handle to compare with
     * @return whether the handles refer to the same tree
     */
    boolean isSameTree(SmbTreeHandle th);

    /**
     * Checks if this tree handle uses SMB2 or later protocol
     * @return whether this tree handle uses SMB2+
     */
    boolean isSMB2();

    /**

/**
 * Handle for Security Account Manager (SAM) domain operations.
 * This class represents an open handle to a SAM domain and provides
 * operations for managing domain users, groups, and aliases.
 */
public class SamrDomainHandle extends rpc.policy_handle {

    DcerpcHandle handle;

    /**
     * Creates a new SAM domain handle.
     *
     * @param handle the DCE/RPC handle for communication

import jcifs.smb1.smb1.SmbException;

/**
 * Handle for Security Account Manager (SAM) policy operations.
 * This class represents an open handle to a SAM server and provides
 * high-level access to SAM database operations.
 */
public class SamrPolicyHandle extends rpc.policy_handle {

    DcerpcHandle handle;

    /**
     * Creates a new SAM policy handle.
     *
     * @param handle the DCE/RPC handle for communication

import jcifs.internal.smb2.create.CreateContextResponse;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Durable Handle V2 Response Create Context
 *
 * MS-SMB2 Section 2.2.14.2.4
 */
public class DurableHandleV2Response implements CreateContextResponse {

    /**
     * Context name for durable handle V2 response
     */
    public static final String CONTEXT_NAME = "DH2Q";

        // Verify it's an instance of ServerMessageBlock2Response
        assertTrue(lockResponse instanceof jcifs.internal.smb2.ServerMessageBlock2Response);
    }

    @Test
    @DisplayName("Constructor should handle null configuration")
    void testConstructorWithNullConfig() {
        // Given & When
        Smb2LockResponse lockResponse = new Smb2LockResponse(null);

        // Then
        assertNotNull(lockResponse);
    }

        when(nego.isSigningNegotiated()).thenReturn(true);

        assertEquals(1111, handle.getSendBufferSize());
        assertEquals(2222, handle.getReceiveBufferSize());
        assertEquals(3333, handle.getMaximumBufferSize());
        assertTrue(handle.areSignaturesActive());

        verify(session, times(4)).close();
        verify(transport, times(4)).close();
    }