return -1
			}
			return i
		}
	}
	return -1
}

type readBuf []byte

func (b *readBuf) uint8() uint8 {
	v := (*b)[0]
	*b = (*b)[1:]
	return v
}

func (b *readBuf) uint16() uint16 {
	v := binary.LittleEndian.Uint16(*b)
	*b = (*b)[2:]
	return v
}

func (b *readBuf) uint32() uint32 {
	v := binary.LittleEndian.Uint32(*b)
	*b = (*b)[4:]
	return v
}

	const debug = false

	var readBytes int
	var wroteBytes int
	var readBuf bytes.Buffer
	var wroteBuf bytes.Buffer
	readHash := crc32.NewIEEE()
	wroteHash := crc32.NewIEEE()
	read := io.Writer(readHash)
	wrote := io.Writer(wroteHash)
	if debug {
		read = io.MultiWriter(read, &readBuf)
		wrote = io.MultiWriter(wrote, &wroteBuf)
	}
	debugln := func(args ...any) {
		if debug {

        assertEquals("c", raf.readLine());

        when(raf.read()).thenReturn(-1);
        assertNull(raf.readLine());
    }

    @Test
    @DisplayName("readUTF(): decodes bytes after size prefix")
    void readUTF_decodes() throws Exception {
        SmbRandomAccessFile raf = spy(newInstance("r", false, false, false));
        // Size prefix 3, then bytes for "abc"

    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());
    assertThat(in.readUTF()).isEqualTo("Herby Derby");
    assertEquals(0xBEBAFECA, Float.floatToIntBits(in.readFloat()));
    assertEquals(0xBEBAFECAEFBEADDEL, Double.doubleToLongBits(in.readDouble()));
  }

    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());
    assertThat(in.readUTF()).isEqualTo("Herby Derby");
    assertEquals(0xBEBAFECA, Float.floatToIntBits(in.readFloat()));
    assertEquals(0xBEBAFECAEFBEADDEL, Double.doubleToLongBits(in.readDouble()));
  }

    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());
    assertThat(in.readUTF()).isEqualTo("Herby Derby");
    assertEquals(0xBEBAFECA, Float.floatToIntBits(in.readFloat()));
    assertEquals(0xBEBAFECAEFBEADDEL, Double.doubleToLongBits(in.readDouble()));
  }

            }
        }

        if (c == -1 && input.length() == 0) {
            return null;
        }

        return input.toString();
    }

    @Override
    public final String readUTF() throws SmbException {
        final int size = readUnsignedShort();
        final byte[] b = new byte[size];
        read(b, 0, size);
        try {
            return Encdec.dec_utf8(b, 0, size);

    byte[] data = new byte[17];
    data[1] = 15;
    System.arraycopy("Kilroy was here".getBytes(UTF_8), 0, data, 2, 15);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);
    assertThat(in.readUTF()).isEqualTo("Kilroy was here");
  }

  public void testNewDataInput_readChar() {
    byte[] data = "qed".getBytes(UTF_16BE);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);

      try {
        return input.readLine();
      } catch (IOException e) {
        throw new IllegalStateException(e);
      }
    }

    @Override
    public String readUTF() {
      try {
        return input.readUTF();
      } catch (IOException e) {
        throw new IllegalStateException(e);
      }
    }
  }

  /** Returns a new {@link ByteArrayDataOutput} instance with a default size. */

    byte[] data = new byte[17];
    data[1] = 15;
    System.arraycopy("Kilroy was here".getBytes(UTF_8), 0, data, 2, 15);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);
    assertThat(in.readUTF()).isEqualTo("Kilroy was here");
  }

  public void testNewDataInput_readChar() {
    byte[] data = "qed".getBytes(UTF_16BE);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);