def test_head_non_empty(self): deque = ArrayDeque() deque.push(1) self.assertEqual(deque.head(), 1)
def test_head_empty(self): deque = ArrayDeque() with self.assertRaises(ValueError): deque.head()
def test_head_non_empty(self): deque = ArrayDeque() deque.push(1) self.assertEqual(deque.head(), 1)
def test_head_empty(self): deque = ArrayDeque() with self.assertRaises(ValueError): deque.head()