}

  private static final HashCode HASH_ABCD =
      HashCode.fromBytes(new byte[] {(byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd});

  public void testWriteBytesTo() {
    byte[] dest = new byte[4];
    HASH_ABCD.writeBytesTo(dest, 0, 4);
    assertTrue(
        Arrays.equals(new byte[] {(byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd}, dest));
  }

  public void testWriteBytesToOversizedArray() {

  }

  private static final HashCode HASH_ABCD =
      HashCode.fromBytes(new byte[] {(byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd});

  public void testWriteBytesTo() {
    byte[] dest = new byte[4];
    HASH_ABCD.writeBytesTo(dest, 0, 4);
    assertTrue(
        Arrays.equals(new byte[] {(byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd}, dest));
  }

  public void testWriteBytesToOversizedArray() {

    val body = "efbbbf68656c6c6f".decodeHex().toResponseBody()
    val source = body.source()
    assertThat(source.readByte() and 0xff).isEqualTo(0xef)
    assertThat(source.readByte() and 0xff).isEqualTo(0xbb)
    assertThat(source.readByte() and 0xff).isEqualTo(0xbf)
    assertThat(source.readUtf8()).isEqualTo("hello")
  }

  @Test
  fun bytesEmpty() {
    val body = body("")

        Longs.toByteArray(0x1213141516171819L));
    assertByteArrayEquals(
        new byte[] {
          (byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC,
          (byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88
        },
        Longs.toByteArray(0xFFEEDDCCBBAA9988L));
  }

  public void testFromByteArray() {
    assertThat(

     * @param b the byte array to check
     * @return true if the bytes represent UTF-8 BOM, false otherwise
     */
    private boolean isUtf8BomBytes(final byte[] b) {
        return b[0] == (byte) 0xEF && b[1] == (byte) 0xBB && b[2] == (byte) 0xBF;
    }

    /**
     * Sets whether to process Google on/off comment directives.
     *
     * @param useGoogleOffOn true to enable Google on/off processing, false to disable