### Question:
Tick implements Updatable { public void set(long value) { currentTicks = value; } Tick(); void addAction(TickAction action, long tickDelay); void start(); void stop(); void restart(); void pause(); void resume(); boolean elapsed(long tick); boolean elapsedTime(int rate, long milli); long elapsed(); void set(long value); boolean isStarted(); @Override void update(double extrp);  }### Answer:
@Test void testSet() { assertFalse(tick.isStarted()); assertEquals(0L, tick.elapsed()); assertFalse(tick.elapsed(1L)); assertFalse(tick.elapsedTime(60, 15L)); tick.set(1); assertFalse(tick.isStarted()); assertEquals(1L, tick.elapsed()); assertFalse(tick.elapsed(1L)); assertFalse(tick.elapsedTime(60, 15L)); tick.start(); assertTrue(tick.isStarted()); assertEquals(1L, tick.elapsed()); assertTrue(tick.elapsed(1L)); assertTrue(tick.elapsedTime(60, 15L)); }