@Test
 public void testGetTotalRunTime() {
   Timing timer = new Timing();
   timer.setStartTime();
   timer.setEndTime();
   assertNotEquals(timer.getTotalRunTime(), 0);
 }
 @Test
 public void testValidRunTime() {
   long gold = 10;
   Timing timer = new Timing(gold);
   timer.setStartTime();
   timer.setEndTime();
   assertFalse(timer.validRunTime());
   // gold = 0;
   // Timing timer2 = new Timing(gold);
   // assertTrue(timer2.validRunTime());
 }
 @Test
 public void testSetEndTime() {
   Timing timer = new Timing();
   timer.setEndTime();
   assertNotEquals(timer.endTime, 0);
 }