private lateinit var serverIpv4: MockWebServer
  private lateinit var serverIpv6: MockWebServer

  private val listener = RecordingEventListener()
  private lateinit var client: OkHttpClient
  private lateinit var url: HttpUrl

  /**
   * This is mutable and order matters. By default, it contains [IPv4, IPv6]. Tests may manipulate
   * it to prefer IPv6.
   */
  private var dnsResults = listOf<InetAddress>()

  @BeforeEach

Por ejemplo, como en el modelo `Image` tenemos un campo `url`, podemos declararlo como una instance de `HttpUrl` de Pydantic en lugar de un `str`:

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

El string será verificado para ser una URL válida, y documentado en JSON Schema / OpenAPI como tal.

import mockwebserver3.SocketEffect.CloseSocket
import mockwebserver3.SocketEffect.ShutdownConnection
import mockwebserver3.junit5.StartStop
import okhttp3.Headers.Companion.headersOf
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.internal.http2.Http2Connection.Companion.OKHTTP_CLIENT_WINDOW_SIZE
import okhttp3.testing.PlatformRule
import okio.BufferedSource

For example, as in the `Image` model we have a `url` field, we can declare it to be an instance of Pydantic's `HttpUrl` instead of a `str`:

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

The string will be checked to be a valid URL, and documented in JSON Schema / OpenAPI as such.

Например, так как в модели `Image` у нас есть поле `url`, то мы можем объявить его как тип `HttpUrl` из модуля Pydantic вместо типа `str`:

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

Строка будет проверена на соответствие допустимому URL-адресу и задокументирована в JSON схему / OpenAPI.

모든 옵션을 보려면, <a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">Pydantic's exotic types</a> 문서를 확인하세요. 다음 장에서 몇가지 예제를 볼 수 있습니다.

예를 들어 `Image` 모델 안에 `url` 필드를 `str` 대신 Pydantic의 `HttpUrl`로 선언할 수 있습니다:

{* ../../docs_src/body_nested_models/tutorial005.py hl[4,10] *}

이 문자열이 유효한 URL인지 검사하고 JSON 스키마/OpenAPI로 문서화 됩니다.

## 서브모델 리스트를 갖는 어트리뷰트

`list`, `set` 등의 서브타입으로 Pydantic 모델을 사용할 수도 있습니다:

import assertk.assertions.matches
import java.net.UnknownHostException
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop
import okhttp3.HttpUrl
import okhttp3.Interceptor
import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request

    `DurationUnit` which was a typealias in 1.5.x.
 *  Upgrade: [Okio 3.2.0][okio_3_2_0].


## Version 5.0.0-alpha.9

_2022-06-16_

 *  New: Enforce label length limits in URLs. `HttpUrl` now rejects URLs whose domains aren't valid.
    This includes overly-long domain names (longer than 253 characters), overly-long labels (more
    than 63 characters between dots), and empty labels.

import assertk.assertions.isTrue
import java.io.File
import java.io.FileWriter
import java.net.URI
import java.util.UUID
import kotlin.test.assertFailsWith
import okhttp3.Headers.Companion.headersOf
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.asRequestBody
import okhttp3.RequestBody.Companion.toRequestBody
import okio.Buffer

import java.text.SimpleDateFormat
import java.util.Arrays
import java.util.Date
import kotlin.test.assertFailsWith
import okhttp3.Cookie.Companion.parse
import okhttp3.Cookie.Companion.parseAll
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.internal.UTC
import okhttp3.internal.http.MAX_DATE
import okhttp3.internal.parseCookie
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.assertThrows