assertThat(header.tag).isEqualTo(26L)
      assertThat(header.constructed).isFalse()
      assertThat(header.tagClass).isEqualTo(DerHeader.TAG_CLASS_UNIVERSAL)
      assertThat(derReader.readOctetString()).isEqualTo("Jones".encodeUtf8())
    }

    assertThat(derReader.hasNext()).isFalse()
  }

  @Test fun `encode primitive string`() {
    val buffer = Buffer()
    val derWriter = DerWriter(buffer)

    }
    val unusedBitCount = source.readByte().toInt() and 0xff
    val byteString = source.readByteString(bytesLeft)
    return BitString(byteString, unusedBitCount)
  }

  fun readOctetString(): ByteString {
    if (bytesLeft == -1L || constructed) {
      throw ProtocolException("constructed octet strings not supported for DER")
    }
    return source.readByteString(bytesLeft)
  }