assertThat(log).containsExactly("red:run@100000", "blue:run@200000")
    assertThat(taskFaker.executeCallCount).isEqualTo(2)

    taskFaker.assertNoMoreTasks()
  }

  private val Int.µs: Long
    get() = this * 1_000L

  ) : AbstractQueue<T>(), BlockingQueue<T> {
    override val size: Int = delegate.size

    private var editCount = 0

    override fun poll(): T = delegate.poll()

    override fun poll(
      timeout: Long,
      unit: TimeUnit,
    ): T? {
      taskRunner.lock.withLock {
        val waitUntil = nanoTime + unit.toNanos(timeout)
        while (true) {
          val result = poll()

    )
  }

  class RealBackend(threadFactory: ThreadFactory) : Backend {
    val executor =
      ThreadPoolExecutor(
        // corePoolSize:
        0,
        // maximumPoolSize:
        Int.MAX_VALUE,
        // keepAliveTime:
        60L,
        TimeUnit.SECONDS,
        SynchronousQueue(),
        threadFactory,
      )

    override fun nanoTime() = System.nanoTime()