import java.util.concurrent.ThreadFactory
import java.util.concurrent.TimeUnit
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test

/**
 * Integration test to confirm that [TaskRunner] works with a real backend. Business logic is all
 * exercised by [TaskRunnerTest].
 *
 * This test is doing real sleeping with tolerances of 250 ms. Hopefully that's enough for even the

  @MockWebServerInstance("server3") private val server3: MockWebServer
) {
  @Test
  fun test() {
    ...
  }
}
```

Requirements
------------

MockWebServer's JUnit 5 integration works on Android 7.0+ (API level 24+) and Java 8+. Note that

| com.squareup.okhttp3:mockwebserver3-junit4:5.0.0-alpha.2 | mockwebserver3.junit4 | Optional JUnit 4 integration.     |
| com.squareup.okhttp3:mockwebserver3-junit5:5.0.0-alpha.2 | mockwebserver3.junit5 | Optional JUnit 5 integration.     |
| com.squareup.okhttp3:mockwebserver:5.0.0-alpha.2         | okhttp3.mockwebserver | Obsolete. Depends on JUnit 4.     |

     * Returns a character equivalent to 's' in this component. This is used to convert hostname
     * characters to lowercase.
     */
    open fun canonicalize(s: String): String = s
  }

  /** Tests integration between HttpUrl and the host platform's built-in URL classes, if any. */
  open class Platform {
    open fun test(
      codePoint: Int,
      codePointString: String,
      encoding: Encoding,

   * `ConcurrentModificationException`, but if new responses are added while iterating, their URLs
   * will not be returned. If existing responses are evicted during iteration, they will be absent
   * (unless they were already returned).
   *
   * The iterator supports [MutableIterator.remove]. Removing a URL from the iterator evicts the

 * [OkHttp Profiler](https://plugins.jetbrains.com/plugin/11249-okhttp-profiler): An IntelliJ plugin for monitoring OkHttp calls.
 * [OkReplay](https://github.com/airbnb/okreplay): Record and replay OkHttp network interaction in your tests.
 * [okhttp-signpost](https://github.com/pakerfeldt/okhttp-signpost): OAuth signing with signpost and OkHttp.

   * may be sent after response headers or body bytes have been received.
   *
   * Though any call may be initiated as a duplex call, only web servers that are specially
   * designed for this nonstandard interaction will use it. As of 2019-01, the only widely-used
   * implementation of this pattern is [gRPC][grpc].
   *
   * Because the encoding of interleaved data is not well-defined for HTTP/1, duplex request

   * entries will not be returned by the iterator. If existing entries are removed during iteration,
   * they will be absent (unless they were already returned).
   *
   * If there are I/O problems during iteration, this iterator fails silently. For example, if the
   * hosting filesystem becomes unreachable, the iterator will omit elements rather than throwing
   * exceptions.

        .addHeader("Cache-Control: max-age=60")
        .body("a")
        .build(),
    )
    val url = server.url("/a")
    assertThat(get(url).body.string()).isEqualTo("a")

    // Remove it with iteration.
    val i = cache.urls()
    assertThat(i.next()).isEqualTo(url.toString())
    i.remove()

    // Confirm that subsequent requests suffer a cache miss.
    server.enqueue(
      MockResponse.Builder()

Upgrading to OkHttp 4
=====================

OkHttp 4.x upgrades our implementation language from Java to Kotlin and keeps everything else the
same. We’ve chosen Kotlin because it gives us powerful new capabilities while integrating closely
with Java.

We spent a lot of time and energy on retaining strict compatibility with OkHttp 3.x. We’re even
keeping the package name the same: `okhttp3`!

There are three kinds of compatibility we’re tracking: