"FINE: Q10000 scheduled after 100 µs: task one",
      "FINE: Q10000 scheduled after 200 µs: task two",
    )
  }

  /**
   * We don't track the active task in scheduled tasks. This behavior might be a mistake, but it's
   * cumbersome to implement properly because the active task might be a cancel.
   */
  @Test fun scheduledTasksDoesNotIncludeRunningTask() {
    val task =
      object : Task("task one") {

   *
   * ```
   *   pinnedRoot (trusted by CertificatePinner)
   *     -> pinnedIntermediate (trusted by CertificatePinner)
   *       -> realVictim
   * ```
   *
   * The attacker compromises a CA. They take the public key from an intermediate certificate
   * signed by the compromised CA's certificate and uses it in a non-CA certificate. They ask the
   * pinned CA above to sign it for non-certificate-authority uses:
   *

211B..211D    ; mapped                 ; 0072          # 1.1  SCRIPT CAPITAL R..DOUBLE-STRUCK CAPITAL R
211E..211F    ; valid                  ;      ; NV8    # 1.1  PRESCRIPTION TAKE..RESPONSE
2120          ; mapped                 ; 0073 006D     # 1.1  SERVICE MARK
2121          ; mapped                 ; 0074 0065 006C #1.1  TELEPHONE SIGN

   *
   * @param eventClass a class to assert that the returned event is an instance of, or null to
   *     take any event class.
   * @param elapsedMs the time in milliseconds elapsed since the immediately-preceding event, or
   *     -1L to take any duration.
   */
  fun takeEvent(
    eventClass: Class<out ConnectionEvent>? = null,
    elapsedMs: Long = -1L,
  ): ConnectionEvent {

    fullBuffer.read(bytesOut, lastFrame.start + length)
    outFrames.add(OutFrame(lastFrame.sequence, lastFrame.start, true))
    return writer
  }

  fun takeFrame(): InFrame = inFrames.take()

  fun play() {
    check(serverSocket == null)
    serverSocket = ServerSocket()
    serverSocket!!.reuseAddress = false
    serverSocket!!.bind(InetSocketAddress("localhost", 0), 1)

 *
 * This class is pretty fast and loose with default values: it attempts to provide values that are
 * well-formed, but doesn't guarantee values are internally consistent. Callers must take care to
 * configure the factory when sample values impact the correctness of the test.
 */
class TestValueFactory : Closeable {
  var taskFaker: TaskFaker = TaskFaker()
  var taskRunner: TaskRunner = taskFaker.taskRunner

    recurrence: Boolean,
  ): Boolean {
    task.initQueue(this)

    val now = taskRunner.backend.nanoTime()
    val executeNanoTime = now + delayNanos

    // If the task is already scheduled, take the earlier of the two times.
    val existingIndex = futureTasks.indexOf(task)
    if (existingIndex != -1) {
      if (task.nextExecuteNanoTime <= executeNanoTime) {

### Holding multiple locks

You're allowed to take the Http2Connection lock while holding the Http2Writer lock. But not vice-versa. Because taking the Http2Writer lock can block.

 *
 * ## Warning: Certificate Pinning is Dangerous!
 *
 * Pinning certificates limits your server team's abilities to update their TLS certificates. By
 * pinning certificates, you take on additional operational complexity and limit your ability to
 * migrate between certificate authorities. Do not use certificate pinning without the blessing of
 * your server's TLS administrator!
 *

        }

        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          throw IOException("a")
        }
      },
    )
    assertThat(testLogHandler.take())
      .isEqualTo("INFO: Callback failure for call to " + server.url("/") + "...")
  }

  @Test
  fun connectionPooling() {
    server.enqueue(MockResponse(body = "abc"))