int off = (int) expectedSize - remaining;
      int read = in.read(bytes, off, remaining);
      if (read == -1) {
        // end of stream before reading expectedSize bytes
        // just return the bytes read so far
        return Arrays.copyOf(bytes, off);
      }
      remaining -= read;
    }

    // bytes is now full
    int b = in.read();
    if (b == -1) {
      return bytes;
    }

    }

    @Test
    @DisplayName("readn should handle multiple read calls")
    void testReadnMultipleCalls() throws IOException {
        when(mockInputStream.read(any(byte[].class), anyInt(), anyInt())).thenReturn(2) // First read returns 2 bytes
                .thenReturn(2) // Second read returns 2 bytes
                .thenReturn(1); // Third read returns 1 byte

        byte[] buffer = new byte[10];

    assertEquals(0, ticker.read());
    assertEquals(10, ticker.read());
    assertEquals(20, ticker.read());
  }

  public void testAutoIncrementStep_millis() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(1, MILLISECONDS);
    assertEquals(0, ticker.read());
    assertEquals(1000000, ticker.read());
    assertEquals(2000000, ticker.read());
  }

		t.Errorf("r.Len(): got %d, want %d", got, want)
	}
	if n, err := r.Read(make([]byte, 10)); err != nil || n != 10 {
		t.Errorf("Read failed: read %d %v", n, err)
	}
	if got, want := r.Len(), 1; got != want {
		t.Errorf("r.Len(): got %d, want %d", got, want)
	}
	if n, err := r.Read(make([]byte, 1)); err != nil || n != 1 {
		t.Errorf("Read failed: read %d %v; want 1, nil", n, err)
	}
	if got, want := r.Len(), 0; got != want {

        reader.setScrollSize(1000);
        int count = 0;
        Set<String> valueSet = Collections.synchronizedSet(new HashSet<>());
        Map<String, Object> source;
        while ((source = reader.read()) != null) {
            assertTrue(source.get("field1").toString().startsWith("test"));
            valueSet.add(source.get("field1").toString());
            count++;
        }
        assertEquals(num, count);

    }

    @Override
    public synchronized int read() throws IOException {
        if (read(tmp, 0, 1) < 0) {
            return -1;
        }
        return tmp[0] & 0xFF;
    }

    @Override
    public synchronized int read(final byte[] b) throws IOException {
        return read(b, 0, b.length);
    }

    /* This method will not return until len bytes have been read
     * or the stream has been closed.
     */

/**
 * SMB1 Read AndX request message.
 *
 * This command is used to read data from a file that has been
 * previously opened with an Open command.
 */
public class SmbComReadAndX extends AndXServerMessageBlock {

    private long offset;
    private int fid;
    int openTimeout;
    int maxCount, minCount, remaining;

    /**
     * Constructs a Read AndX request.
     *

        // Allocate buffer for read data
        ByteBuffer readBuffer = bufferManager.allocateBuffer(request.getLength());
        RdmaMemoryRegion readRegion = provider.registerMemory(readBuffer, 
            EnumSet.of(RdmaAccess.LOCAL_WRITE, RdmaAccess.REMOTE_WRITE));
        
        try {
            // Create SMB2 Read request with RDMA read channel info

            // Read first 5 bytes
            byte[] buffer = new byte[5];
            int bytesRead = stream.read(buffer);
            assertEquals(5, bytesRead);
            assertEquals("Hello", new String(buffer, 0, bytesRead, "UTF-8"));

            // Read remaining bytes
            byte[] remaining = new byte[20];
            int remainingBytes = stream.read(remaining);

        // Test with zero
        buffer.putInt(0, 0);
        assertEquals(0, NtlmMessage.readULong(data, 0), "Should read zero ULong correctly.");

        // Test with max int value (unsigned interpretation)
        buffer.putInt(0, 0xFFFFFFFF);
        assertEquals(0xFFFFFFFF, NtlmMessage.readULong(data, 0), "Should read max ULong correctly.");