)

    taskFaker.assertNoMoreTasks()
  }

  /**
   * This test performs two races:
   *
   *  * The first race is between plan0 and plan1, with a 250 ms head start for plan0.
   *  * The second race is between plan2 and plan3, with a 250 ms head start for plan2.
   *
   * We get plan0 and plan1 from the route planner.
   * We get plan2 as a follow-up to plan1, typically retry the same IP but different TLS.

    blueQueue.cancelAll()
    assertThat(taskFaker.executeCallCount).isEqualTo(1)
  }

  @Test fun noMoreThanOneWorkerThreadWaitingToStartAtATime() {
    // Enqueueing the red task starts a thread because the head of the queue changed.
    redQueue.execute("red task") {
      log += "red:starting@${taskFaker.nanoTime}"
      taskFaker.sleep(100.µs)
      log += "red:finishing@${taskFaker.nanoTime}"
    }