* create a lightweight concrete subclass only to exercise the inherited
 * behaviour. The tests cover flag manipulation, byte‑buffer operations and
 * static helpers. Edge cases such as null or short arrays and negative
 * values are verified to ensure proper exception handling and byte
 * conversion.
 */
@ExtendWith(MockitoExtension.class)
class NtlmMessageTest {

    /** Lightweight concrete implementation used only for testing. */

 * Prevents cascading failures by temporarily blocking requests to a failing service.
 *
 * The circuit breaker has three states:
 * - CLOSED: Normal operation, requests pass through
 * - OPEN: Service is failing, requests are blocked
 * - HALF_OPEN: Testing if service has recovered
 */
public class SmbCircuitBreaker {

    private static final Logger log = LoggerFactory.getLogger(SmbCircuitBreaker.class);

    /**

            final long firstKey = doSend(request, response, params, timeout);

            if (Thread.currentThread() == this.thread) {
                // we are in the transport thread, ie. on idle disconnecting
                // this is synchronous operation
                // This does not handle compound requests
                synchronized (this.inLock) {

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					write([]byte(err.Error()))
				} else {
					write([]byte{0})
				}
				return
			}
		}
	}()
	return func(err error) {
		if doneCh == nil {
			return
		}

		// Indicate we are ready to write.
		doneCh <- err

		// Wait for channel to be closed so we don't race on writes.
		<-doneCh

		// Clear so we can be called multiple times without crashing.
		doneCh = nil

        return new Maps<>(new WeakHashMap<KEY, VALUE>()).$(key, value);
    }

    /**
     * Constructs an instance.
     *
     * @param map the <code>Map</code> to which keys and values are added
     */
    protected Maps(final Map<K, V> map) {
        this.map = map;
    }

    /**
     * Adds a key and value to the {@link Map}.
     *

        RequestWithFileId lockRequest = new Smb2LockRequest(mockConfig, testFileId, new Smb2Lock[0]);

        // Verify all implementations are not null
        assertNotNull(closeRequest, "Smb2CloseRequest should implement RequestWithFileId");
        assertNotNull(queryInfoRequest, "Smb2QueryInfoRequest should implement RequestWithFileId");

        int bytesWritten = request.writeBytesWireFormat(buffer, Smb2Constants.SMB2_HEADER_LENGTH);

        assertEquals(32, bytesWritten);

        // Verify filename offset and length are 0
        int fnOffset = buffer[Smb2Constants.SMB2_HEADER_LENGTH + 24] | (buffer[Smb2Constants.SMB2_HEADER_LENGTH + 25] << 8);

        System.setProperties(originalSystemProperties);
        resetHandlerState();
    }

    /**
     * Resets the static state of the Handler class using reflection.
     * This is crucial for ensuring that tests are isolated from each other.
     */
    private void resetHandlerState() throws Exception {
        // Reset the static factory field
        Field factoryField = Handler.class.getDeclaredField("factory");

func (e *Erasure) DecodeDataBlocks(data [][]byte) error {
	isZero := 0
	for _, b := range data {
		if len(b) == 0 {
			isZero++
			break
		}
	}
	if isZero == 0 || isZero == len(data) {
		// If all are zero, payload is 0 bytes.
		return nil
	}
	return e.encoder().ReconstructData(data)
}

// DecodeDataAndParityBlocks decodes the given erasure-coded data and verifies it.