Adapters.INTEGER_AS_BIG_INTEGER,
      algorithmIdentifier,
      name,
      validity,
      name,
      subjectPublicKeyInfo,
      Adapters.BIT_STRING.withTag(tag = 1L).optional(),
      Adapters.BIT_STRING.withTag(tag = 2L).optional(),
      extension.asSequenceOf().withExplicitBox(tag = 3).optional(defaultValue = listOf()),
      decompose = {
        listOf(
          it.version,

    val bitString = BitString("6e5dc0".decodeHex(), 6)

    assertThat(Adapters.BIT_STRING.fromDer(bytes)).isEqualTo(bitString)
    assertThat(Adapters.BIT_STRING.toDer(bitString)).isEqualTo(bytes)
  }

  @Test fun `cannot decode empty bit string`() {
    val bytes = "0300".decodeHex()
    assertFailsWith<ProtocolException> {
      Adapters.BIT_STRING.fromDer(bytes)
    }.also { expected ->

          ) = writer.writeBigInteger(value)
        },
    )

  val BIT_STRING =
    BasicDerAdapter(
      name = "BIT STRING",
      tagClass = DerHeader.TAG_CLASS_UNIVERSAL,
      tag = 3L,
      codec =
        object : BasicDerAdapter.Codec<BitString> {
          override fun decode(reader: DerReader): BitString = reader.readBitString()

          override fun encode(
            writer: DerWriter,

        "copy_to": ["content_minhash_bits"]
      },
      "content_minhash": {
        "type": "text",
        "index": false
      },
      "content_minhash_bits": {
        "type": "minhash",
        "bit_string": true,
        "minhash_analyzer": "minhash_analyzer"
      },
      "content_length": {
        "type": "long"
      },
      "created": {
        "type": "date",
        "format": "date_optional_time"

 * limitations under the License.
 */
package okhttp3.tls.internal.der

import okio.ByteString

/**
 * Like a [ByteString], but whose bits are not necessarily a strict multiple of 8.
 */
internal data class BitString(
  val byteString: ByteString,
  /** 0-7 unused bits in the last byte. */
  val unusedBitsCount: Int,
) {

      sink.writeByte((v shr shift).toInt())
    }
  }

  fun writeBitString(bitString: BitString) {
    val sink = sink()
    sink.writeByte(bitString.unusedBitsCount)
    sink.write(bitString.byteString)
  }

  fun writeOctetString(byteString: ByteString) {
    sink().write(byteString)
  }

  fun writeUtf8(value: String) {
    sink().writeUtf8(value)
  }

import okhttp3.tls.internal.der.ObjectIdentifiers.SUBJECT_ALTERNATIVE_NAME
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.decodeBase64
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import okio.ByteString.Companion.toByteString
import org.junit.jupiter.api.Test

internal class DerCertificatesTest {

  val issuer: List<List<AttributeTypeAndValue>>,
  val validity: Validity,
  val subject: List<List<AttributeTypeAndValue>>,
  val subjectPublicKeyInfo: SubjectPublicKeyInfo,
  val issuerUniqueID: BitString?,
  val subjectUniqueID: BitString?,
  val extensions: List<Extension>,
) {
  /**
   * Returns the standard name of this certificate's signature algorithm as specified by

import okhttp3.tls.internal.der.ObjectIdentifiers.SUBJECT_ALTERNATIVE_NAME
import okhttp3.tls.internal.der.TbsCertificate
import okhttp3.tls.internal.der.Validity
import okio.ByteString
import okio.ByteString.Companion.decodeBase64
import okio.ByteString.Companion.toByteString

/**
 * A certificate and its private key. These are some properties of certificates that are used with
 * TLS:
 *

    }
    return result
  }

  fun readBitString(): BitString {
    if (bytesLeft == -1L || constructed) {
      throw ProtocolException("constructed bit strings not supported for DER")
    }
    if (bytesLeft < 1) {
      throw ProtocolException("malformed bit string")
    }
    val unusedBitCount = source.readByte().toInt() and 0xff
    val byteString = source.readByteString(bytesLeft)