@Test
public void testSize() {
assertEquals(0, deque.size());
deque.addFront(3);
assertEquals(1, deque.size());
deque.addFront(7);
assertEquals(2, deque.size());
deque.removeFront();
assertEquals(1, deque.size());
deque.removeFront();
assertEquals(0, deque.size());
}
@Test
public void testRemoveFront() {
deque.addBack(3);
deque.addBack(7);
deque.addBack(4);
assertEquals(new Integer(3), deque.removeFront());
assertEquals("<7, 4>", deque.toString());
assertEquals(new Integer(7), deque.removeFront());
assertEquals("<4>", deque.toString());
assertEquals(new Integer(4), deque.removeFront());
assertEquals("<>", deque.toString());
}
@Test
public void testIsEmpty() {
assertTrue(deque.isEmpty());
deque.addFront(3);
assertFalse(deque.isEmpty());
deque.removeFront();
assertTrue(deque.isEmpty());
}
