import okhttp3.Request
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import okhttp3.tls.internal.TlsUtil.localhost
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

class MockResponseSniTest {
  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @RegisterExtension

import org.apache.hc.client5.http.classic.methods.HttpGet
import org.apache.hc.client5.http.impl.classic.HttpClients
import org.apache.hc.core5.http.io.entity.EntityUtils
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Test

/**
 * Apache HttpClient 5.x.
 *
 * https://hc.apache.org/httpcomponents-client-5.0.x/index.html
 *

import org.apache.hc.client5.http.impl.async.HttpAsyncClients
import org.apache.hc.core5.concurrent.FutureCallback
import org.apache.hc.core5.http.ProtocolVersion
import org.junit.Assert
import org.junit.Test

/**
 * Simplified from
 * https://hc.apache.org/httpcomponents-client-5.0.x/httpclient5/examples/AsyncClientTlsAlpn.java
 *

import java.net.http.HttpResponse.BodyHandlers
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import okhttp3.testing.PlatformRule
import okhttp3.testing.PlatformVersion
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**
 * Java HTTP Client.
 *
 * https://openjdk.java.net/groups/net/httpclient/intro.html
 *

  "Bundle-SymbolicName: com.squareup.okhttp3.logging"
)

dependencies {
  api(projects.okhttp)
  compileOnly(libs.findbugs.jsr305)

  testCompileOnly(libs.findbugs.jsr305)
  testImplementation(libs.junit)
  testImplementation(projects.mockwebserver3)
  testImplementation(projects.mockwebserver3Junit5)
  testImplementation(projects.okhttpTestingSupport)
  testImplementation(projects.okhttpTls)
  testImplementation(libs.assertk)

import assertk.assertThat
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import java.util.ArrayDeque
import java.util.Deque
import okio.Buffer
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Test

class ServerSentEventIteratorTest {
  /** Either [Event] or [Long] items for events and retry changes, respectively.  */
  private val callbacks: Deque<Any> = ArrayDeque()

    fun withConnectTimeout(
      timeout: Int,
      unit: TimeUnit,
    ): Chain

    fun readTimeoutMillis(): Int

    fun withReadTimeout(
      timeout: Int,
      unit: TimeUnit,
    ): Chain

    fun writeTimeoutMillis(): Int

    fun withWriteTimeout(
      timeout: Int,
      unit: TimeUnit,
    ): Chain
  }

import okhttp3.testing.PlatformRule
import okhttp3.tls.HeldCertificate.Companion.decode
import okio.ByteString.Companion.decodeBase64
import org.bouncycastle.asn1.x509.GeneralName
import org.junit.jupiter.api.Assertions.fail
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

class HeldCertificateTest {
  @RegisterExtension
  var platform = PlatformRule()

  @Test
  fun defaultCertificate() {

import java.util.concurrent.ConcurrentLinkedDeque
import java.util.concurrent.TimeUnit
import okhttp3.ConnectionEvent.NoNewExchanges
import okhttp3.internal.connection.RealConnection
import okio.IOException
import org.junit.jupiter.api.Assertions

open class RecordingConnectionListener(
  /**
   * An override to ignore the normal order that is enforced.
   * EventListeners added by Interceptors will not see all events.
   */

Here's a complete example:

```java
public void test() throws Exception {
  // Create a MockWebServer. These are lean enough that you can create a new
  // instance for every unit test.
  MockWebServer server = new MockWebServer();

  // Schedule some responses.
  server.enqueue(new MockResponse().setBody("hello, world!"));
  server.enqueue(new MockResponse().setBody("sup, bra?"));