@Test
public void testAddMethod() {
StopWatch s1 = new StopWatch(5, 59, 300);
s1.add(2000);
assertEquals(s1.toString(), "6:01:300");
s1 = new StopWatch(5, 59, 300);
StopWatch s2 = new StopWatch(2, 2, 300);
s1.add(s2);
System.out.println(s1);
assertEquals(s1.toString(), "8:01:600");
for (int i = 0; i < 15000; i++) s1.inc();
System.out.println(s1);
assertEquals(s1.toString(), "8:16:600");
}
