blueQueue.execute("blue task", 200.µs) {
      log += "blue:run@${taskFaker.nanoTime}"
    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    // Nothing to do.
    taskFaker.runTasks()
    assertThat(log).isEmpty()

    // At 100.µs, the coordinator runs the red task and starts a thread for the new coordinator.
    taskFaker.advanceUntil(100.µs)
    assertThat(log).containsExactly("red:run@100000")