Consider the following JUnit Test Class

public class Test{ Set s = new HashSet(); @Before public void setUp(){ s = new HashSet(); s.add ("cat"); s.add ("dog"); }

@Test public void test1() { s.add ("cat"); assertTrue ("Size is 2", s.size() == 2); } @Test public void test2(){ s.remove ("cat"); assertTrue ("Size is 1", s.size() == 1); s.add ("elephant"); assertTrue ("Size is 2", s.size() == 2); } }

2. What is wrong with test2()? How should test2() be repaired?