fun runningCalls(): List<Call> = (runningSyncCalls + runningAsyncCalls.map { it.call }).unmodifiable()

  @Synchronized
  fun queuedCallsCount(): Int = readyAsyncCalls.size

  @Synchronized
  fun runningCallsCount(): Int = runningAsyncCalls.size + runningSyncCalls.size

  @JvmName("-deprecated_executorService")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "executorService"),

    val a5 = client.newCall(newRequest("http://a/5"))
    a1.enqueue(callback)
    a2.enqueue(callback)
    a3.enqueue(callback)
    a4.enqueue(callback)
    a5.enqueue(callback)
    assertThat(dispatcher.runningCallsCount()).isEqualTo(3)
    assertThat(dispatcher.queuedCallsCount()).isEqualTo(2)
    assertThat(dispatcher.runningCalls())
      .containsExactlyInAnyOrder(a1, a2, a3)
    assertThat(dispatcher.queuedCalls())