* always under a lock.
     */
    private static final class SupplantableFuture implements Cancellable {
      private final ReentrantLock lock;

      @GuardedBy("lock")
      private Future<@Nullable Void> currentFuture;

      SupplantableFuture(ReentrantLock lock, Future<@Nullable Void> currentFuture) {
        this.lock = lock;
        this.currentFuture = currentFuture;
      }

class NameServiceClientImplTest {

    @Mock
    private CIFSContext mockContext;

    @Mock
    private Configuration mockConfig;

    @Mock
    private NetbiosAddress mockNetbiosAddress;

    @Mock
    private Address mockAddress;

    private NameServiceClientImpl nameServiceClient;

    @BeforeEach
    void setUp() throws UnknownHostException {
        // Configure mock context with fast timeouts

            data = new byte[128];
            Arrays.fill(data, (byte) 0x00);

            // Set up mock messages
            request = mock(CommonServerMessageBlock.class);
            response = mock(CommonServerMessageBlock.class);
        }

        @Test
        @DisplayName("Should sign data correctly with zero signature field")

    private SamrAliasHandle aliasHandle;
    private LsarSidArray sids;

    @BeforeEach
    void setUp() {
        // Create mock objects for the constructor parameters
        aliasHandle = mock(SamrAliasHandle.class);
        sids = mock(LsarSidArray.class);
    }

    /**
     * Test method for {@link jcifs.dcerpc.msrpc.MsrpcGetMembersInAlias#MsrpcGetMembersInAlias(SamrAliasHandle, LsarSidArray)}.

 * test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the
 * {@link #callAndAssertBlocks} method is ever called in a test, the lock-like object must have a

    @Test
    void testLsarLookupSidsConstructorAndGetOpnum() {
        rpc.policy_handle mockHandle = mock(rpc.policy_handle.class);
        lsarpc.LsarSidArray mockSids = mock(lsarpc.LsarSidArray.class);
        lsarpc.LsarRefDomainList mockDomains = mock(lsarpc.LsarRefDomainList.class);
        lsarpc.LsarTransNameArray mockNames = mock(lsarpc.LsarTransNameArray.class);

@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class SmbTreeHandleImplTest {

    @Mock
    SmbResourceLocatorImpl resourceLoc;

    @Mock
    SmbTreeConnection treeConnection;

    @Mock
    SmbSessionImpl session;

    @Mock
    SmbTransportImpl transport;

    @Mock
    Configuration config;

    private SmbTreeHandleImpl handle;

    @BeforeEach
    void setUp() {

     * Initializes a mock {@link SmbPipeResource} and a mock implementation of {@link SmbPipeHandle}.
     * @throws CIFSException if an error occurs during setup.
     */
    @BeforeEach
    public void setUp() throws CIFSException {
        mockPipeResource = mock(SmbPipeResource.class);
        mockSmbPipeHandleInternal = mock(SmbPipeHandleInternal.class);
        mockInputStream = mock(InputStream.class);

    void resolveSids_populatesFields_happyPath() throws Exception {
        SIDCacheImpl cache = new SIDCacheImpl(mock(CIFSContext.class));
        DcerpcHandle handle = mock(DcerpcHandle.class);
        LsaPolicyHandle policy = mock(LsaPolicyHandle.class);

        // Prepare input SIDs
        SID s1 = sid("S-1-5-21-1-2-3-1001");
        SID s2 = sid("S-1-5-21-1-2-3-1002");

            }
        };

        NotificationHelper notificationHelper = new NotificationHelper() {
            // Mock send method
            public void send(final Object postcard) {
                // Mock implementation
            }
        };

        // Mock Postbox - no need to mock, the framework will handle it

        // Register components