}

    @Test
    @DisplayName("Should handle null file ID")
    void testSetNullFileId() {
        // Given
        RequestWithFileId request = new Smb2CloseRequest(mockConfig, testFileId);

        // When & Then - should handle null gracefully (implementation dependent)
        assertDoesNotThrow(() -> request.setFileId(null), "Should handle null file ID without throwing exception");
    }

    @Test

         */
        @Test
        public void testIsOpen_ReturnsTrueWhenOpen() {
            when(smbPipeHandle.isOpen()).thenReturn(true);
            assertTrue(smbPipeHandle.isOpen(), "isOpen() should return true when the handle is open.");
        }

        /**
         * Verifies that the isOpen method returns false for a closed handle.
         */
        @Test

import jcifs.dcerpc.rpc;

/**
 * MSRPC implementation for opening a domain handle.
 * This class provides functionality to open a handle to a SAM domain
 * using the SAMR RPC interface.
 */
public class MsrpcSamrOpenDomain extends samr.SamrOpenDomain {

    /**
     * Creates a new request to open a domain handle.
     *
     * @param handle the SAM policy handle
     * @param access the desired access rights

     *
     * @param handle the DCE/RPC handle for communication
     * @param policyHandle the policy handle for this domain
     * @param access the desired access rights
     * @param sid the security identifier of the domain
     * @throws IOException if an I/O error occurs during handle creation
     */
    public SamrDomainHandle(final DcerpcHandle handle, final SamrPolicyHandle policyHandle, final int access, final rpc.sid_t sid)

	[op(0x01)]
	int SamrCloseHandle([in] policy_handle *handle);

	[op(0x39)]
	int SamrConnect2([in,string,unique] wchar_t *system_name,
			[in] uint32_t access_mask,
			[out] policy_handle *handle);

	[op(0x3e)]
	int SamrConnect4([in,string,unique] wchar_t *system_name,
			[in] uint32_t unknown,
			[in] uint32_t access_mask,
			[out] policy_handle *handle);

	[op(0x07)]
	int SamrOpenDomain([in] policy_handle *handle,

        SamrPolicyHandle handle = new SamrPolicyHandle(mockHandle, server, access);
        handle.close();

        // Verify close was called
        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
        assertEquals(handle, closeCaptor.getValue().handle); // Verify correct handle is passed
    }

    @Test

/**
 * Microsoft RPC SAM close handle request.
 * This class implements the SAMR close handle operation.
 *
 * @author mbechler
 */
public class MsrpcSamrCloseHandle extends samr.SamrCloseHandle {

    /**
     * Creates a new request to close a SAM handle.
     *
     * @param handle the policy handle to close
     */
    public MsrpcSamrCloseHandle(final policy_handle handle) {
        super(handle);

package jcifs.internal.smb2.persistent;

/**
 * Enumeration of SMB2/3 handle types supporting durability and persistence.
 */
public enum HandleType {
    /**
     * No durability - standard handle
     */
    NONE(0),

    /**
     * SMB 2.1 durable handle - survives network loss
     */
    DURABLE_V1(1),

    /**
     * SMB 3.0 durable handle V2 - with timeout configuration
     */
    DURABLE_V2(2),

            assertEquals(28, bytesRead); // Header + one referral structure
            assertNotNull(response.getDfsResponse());
        }

        @Test
        @DisplayName("Should handle readDataWireFormat with offset")
        void testReadDataWireFormatWithOffset() {
            byte[] fullBuffer = new byte[200];
            byte[] dfsData = createValidDfsReferralBuffer();
            int offset = 50;

    final static int pipeFlags = 0x2019F << 16 | SmbPipeResource.PIPE_TYPE_RDWR | SmbPipeResource.PIPE_TYPE_DCE_TRANSACT;

    private final SmbNamedPipe pipe;
    private final SmbPipeHandleInternal handle;

    /**
     * Creates a DCERPC pipe handle for named pipe communication
     * @param url the DCERPC URL specifying the endpoint
     * @param tc the CIFS context for connection configuration