redQueue.execute("task") {
      log += "run@${taskFaker.nanoTime}"
    }

    val idleLatch1 = redQueue.idleLatch()
    val idleLatch2 = redQueue.idleLatch()
    assertThat(idleLatch2).isSameAs(idleLatch1)
  }

  @Test fun cancelAllWhenEmptyDoesNotStartWorkerThread() {
    redQueue.execute("red task", 100.µs) {
      error("expected to be canceled")
    }