assertThat(recordedCommand).isSameInstanceAs(command);
    assertThat(recordedTimeUnit).isEqualTo(NANOSECONDS);
    assertThat(Duration.ofNanos(recordedDelay)).isEqualTo(Duration.ofSeconds(12));
  }

  public void testScheduleCallable() throws Exception {
    Callable<String> callable = () -> "hello";

    ListenableScheduledFuture<String> future =
        executorService.schedule(callable, Duration.ofMinutes(12));