}

  @Test fun `decode object identifier`() {
    val bytes = "06092a864886f70d01010b".decodeHex()
    assertThat(Adapters.OBJECT_IDENTIFIER.fromDer(bytes)).isEqualTo(SHA256_WITH_RSA_ENCRYPTION)
    assertThat(Adapters.OBJECT_IDENTIFIER.toDer(SHA256_WITH_RSA_ENCRYPTION)).isEqualTo(bytes)
  }

  @Test fun `null value`() {
    val bytes = "0500".decodeHex()
    assertThat(Adapters.NULL.fromDer(bytes)).isNull()

    @JvmField val TLS_RSA_WITH_NULL_SHA256 = init("TLS_RSA_WITH_NULL_SHA256", 0x003b)

    @JvmField val TLS_RSA_WITH_AES_128_CBC_SHA256 = init("TLS_RSA_WITH_AES_128_CBC_SHA256", 0x003c)

    @JvmField val TLS_RSA_WITH_AES_256_CBC_SHA256 = init("TLS_RSA_WITH_AES_256_CBC_SHA256", 0x003d)

    // @JvmField val TLS_DH_DSS_WITH_AES_128_CBC_SHA256 = init("TLS_DH_DSS_WITH_AES_128_CBC_SHA256", 0x003e)

      TLS_AES_128_GCM_SHA256,
      TLS_AES_256_GCM_SHA384,
      TLS_CHACHA20_POLY1305_SHA256,
      TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
      TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
      TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
      TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
      TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
    )
  }

  @Test

      // Lazily compute the hashes for each certificate.
      var sha1: ByteString? = null
      var sha256: ByteString? = null

      for (pin in pins) {
        when (pin.hashAlgorithm) {
          "sha256" -> {
            if (sha256 == null) sha256 = peerCertificate.sha256Hash()
            if (pin.hash == sha256) return // Success!
          }
          "sha1" -> {

        assertThat(sslSocket.enabledCipherSuites)
          .containsExactly(
            CipherSuite.TLS_AES_128_GCM_SHA256.javaName,
            CipherSuite.TLS_AES_256_GCM_SHA384.javaName,
            CipherSuite.TLS_CHACHA20_POLY1305_SHA256.javaName,
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256.javaName,
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA.javaName,
          )
      } else {

import okhttp3.tls.internal.der.ObjectIdentifiers.BASIC_CONSTRAINTS
import okhttp3.tls.internal.der.ObjectIdentifiers.ORGANIZATIONAL_UNIT_NAME
import okhttp3.tls.internal.der.ObjectIdentifiers.SHA256_WITH_ECDSA
import okhttp3.tls.internal.der.ObjectIdentifiers.SHA256_WITH_RSA_ENCRYPTION
import okhttp3.tls.internal.der.ObjectIdentifiers.SUBJECT_ALTERNATIVE_NAME
import okhttp3.tls.internal.der.TbsCertificate
import okhttp3.tls.internal.der.Validity

    assertFailsWith<IllegalArgumentException> {
      CertificatePinner.Pin(
        "example.*",
        "sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=",
      )
    }
  }

  @Test
  fun testGoodPin() {
    val pin =
      CertificatePinner.Pin(
        "**.example.co.uk",
        "sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=",
      )
    assertEquals(

    .tlsVersions(TlsVersion.TLS_1_2)
    .cipherSuites(
          CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256)
    .build();

OkHttpClient client = new OkHttpClient.Builder()
    .connectionSpecs(Collections.singletonList(spec))
    .build();
```

      )
    }
  }

  @Test
  fun testCertificatePinningFailure() {
    enableTls()

    val certificatePinner =
      CertificatePinner.Builder()
        .add(server.hostName, "sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=")
        .build()
    client = client.newBuilder().certificatePinner(certificatePinner).build()

    server.enqueue(MockResponse(body = "abc"))

        // when it is present, and for others we must omit it!
        // https://tools.ietf.org/html/rfc4055#section-2.1
        ObjectIdentifiers.SHA256_WITH_RSA_ENCRYPTION -> Adapters.NULL
        ObjectIdentifiers.RSA_ENCRYPTION -> Adapters.NULL
        ObjectIdentifiers.EC_PUBLIC_KEY -> Adapters.OBJECT_IDENTIFIER
        else -> null
      }
    }

  /**