stopwatch.start();
    ticker.advance((long) (7.25 * 24 * 60 * 60 * 1000000000L));
    assertEquals("7.250 d", stopwatch.toString());
  }

  @GwtIncompatible
  @J2ktIncompatible
  public void testElapsed_duration() {
    stopwatch.start();
    ticker.advance(999999);
    assertEquals(Duration.ofNanos(999999), stopwatch.elapsed());
    ticker.advance(1);
    assertEquals(Duration.ofMillis(1), stopwatch.elapsed());
  }