@Test
public void testInsert() {
Queue<Integer> q = new Queue<Integer>();
q.insert(1);
q.insert(2);
assertFalse(q.isEmpty());
}
@Test
public void testIsEmpty() {
Queue<Integer> q = new Queue<Integer>();
q.insert(1);
assertFalse(q.isEmpty());
q.remove();
assertTrue(q.isEmpty());
}
@Test
public void testIterator() {
Queue<Integer> q = new Queue<Integer>();
q.insert(1);
q.insert(2);
Iterator<Integer> x = q.iterator();
assertTrue(x.hasNext());
x.next();
assertTrue(x.hasNext());
x.next();
assertFalse(x.hasNext());
}