* Security Account Manager (SAM) handles.
 */
public class MsrpcSamrCloseHandle extends samr.SamrCloseHandle {

    /**
     * Creates a new request to close a SAM handle.
     *
     * @param policyHandle the policy handle to close
     */
    public MsrpcSamrCloseHandle(final rpc.policy_handle policyHandle) {
        super(policyHandle);
        ptype = 0;

 * 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);
        this.ptype = 0;

        // When
        MsrpcSamrCloseHandle msrpcSamrCloseHandle = new MsrpcSamrCloseHandle(mockPolicyHandle);

        // Then
        assertNotNull(msrpcSamrCloseHandle, "MsrpcSamrCloseHandle object should not be null");
        assertEquals(0, msrpcSamrCloseHandle.getPtype(), "ptype should be 0");
        assertEquals(MsrpcSamrCloseHandle.DCERPC_FIRST_FRAG | MsrpcSamrCloseHandle.DCERPC_LAST_FRAG, msrpcSamrCloseHandle.getFlags(),

    private ArgumentCaptor<MsrpcSamrOpenDomain> openDomainCaptor;
    // Use ArgumentCaptor to capture the MsrpcSamrCloseHandle instance passed to sendrecv
    private ArgumentCaptor<MsrpcSamrCloseHandle> closeHandleCaptor;

    @BeforeEach
    void setUp() {
        // Initialize mocks and captors before each test
        MockitoAnnotations.openMocks(this);

        doAnswer(invocation -> {
            MsrpcSamrCloseHandle rpc = invocation.getArgument(0);
            rpc.retval = 0;
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));

        // Act
        aliasHandle.close();

        // Assert
        // Verify that sendrecv was called with MsrpcSamrCloseHandle

        String server = "testServer";
        int access = 123;

        // Setup for successful constructor
        doNothing().when(mockHandle).sendrecv(any(MsrpcSamrConnect4.class));

        // Setup for successful close
        ArgumentCaptor<MsrpcSamrCloseHandle> closeCaptor = ArgumentCaptor.forClass(MsrpcSamrCloseHandle.class);
        doAnswer(invocation -> {

        this.opened = true;
    }

    @Override
    public synchronized void close() throws IOException {
        if (this.opened) {
            this.opened = false;
            final MsrpcSamrCloseHandle rpc = new MsrpcSamrCloseHandle(this);
            this.handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, false);
            }
        }
    }

        this.opened = true;
    }

    @Override
    public synchronized void close() throws IOException {
        if (this.opened) {
            this.opened = false;
            final MsrpcSamrCloseHandle rpc = new MsrpcSamrCloseHandle(this);
            this.handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, false);
            }
        }
    }

    /**
     * Closes this SAM alias handle.
     *
     * @throws IOException if an I/O error occurs during handle closure
     */
    public void close() throws IOException {
        final MsrpcSamrCloseHandle rpc = new MsrpcSamrCloseHandle(this);
        handle.sendrecv(rpc);
        if (rpc.retval != 0) {
            throw new SmbException(rpc.retval, false);
        }
    }

    /**
     * Closes this SAM domain handle.
     *
     * @throws IOException if an I/O error occurs during handle closure
     */
    public void close() throws IOException {
        final MsrpcSamrCloseHandle rpc = new MsrpcSamrCloseHandle(this);
        handle.sendrecv(rpc);
        if (rpc.retval != 0) {
            throw new SmbException(rpc.retval, false);
        }
    }