/** Sets the results for `hostname`.  */
  operator fun set(
    hostname: String,
    addresses: List<InetAddress>,
  ): FakeDns {
    hostAddresses[hostname] = addresses
    return this
  }

  /** Clears the results for `hostname`.  */
  fun clear(hostname: String): FakeDns {
    hostAddresses.remove(hostname)
    return this
  }

  @Throws(UnknownHostException::class)
  fun lookup(

      MockResponse
        .Builder()
        .code(301)
        .setHeader("Location", "http://www.fakeurl:" + server.port)
        .build(),
    )
    server.enqueue(MockResponse())
    val dns = FakeDns()
    dns["fakeurl"] = client.dns.lookup(server.hostName)
    dns["www.fakeurl"] = client.dns.lookup(server.hostName)
    client =
      client
        .newBuilder()
        .dns(dns)
        .build()

    executeSynchronously("/")
      .assertCode(200)
      .assertBody("A")

    // Attempt conditional cache validation and a DNS miss.
    client =
      client
        .newBuilder()
        .dns(FakeDns())
        .build()
    executeSynchronously("/").assertFailure(UnknownHostException::class.java)
  }

  @Test
  fun redirect() {
    server.enqueue(
      MockResponse(
        code = 301,

    )
  }

  @Test
  fun invalidHost() {
    // Note that 1234.1.1.1 is an invalid host in a URI, but URL isn't as strict.
    client =
      client
        .newBuilder()
        .dns(FakeDns())
        .build()
    assertFailsWith<UnknownHostException> {
      getResponse(
        Request
          .Builder()
          .url("http://1234.1.1.1/index.html".toHttpUrl())
          .build(),