  
      def test_queue_from_stacks(self):
          print('Test: Dequeue on empty stack')
          queue = QueueFromStacks()
          assert_equal(queue.dequeue(), None)
  
          print('Test: Enqueue on empty stack')
          print('Test: Enqueue on non-empty stack')
          print('Test: Multiple enqueue in a row')
          num_items = 3
 
</s> remove class TestQueueFromStacks(object):
 </s> add class TestQueueFromStacks(unittest.TestCase): </s> remove     "        assert_equal(queue.dequeue(), None)\n",
 </s> add     "        self.assertEqual(queue.dequeue(), None)\n", </s> remove     "        assert_equal(queue.dequeue(), None)\n",
 </s> add     "        self.assertEqual(queue.dequeue(), None)\n", </s> remove         assert_equal(queue.dequeue(), 0)
 </s> add         self.assertEqual(queue.dequeue(), 0) </s> remove         assert_equal(queue.dequeue(), None)
 </s> add         self.assertEqual(queue.dequeue(), None)
        self.assertEqual(queue.dequeue(), None)
  
      def test_queue_from_stacks(self):
          print('Test: Dequeue on empty stack')
          queue = QueueFromStacks()
        self.assertEqual(queue.dequeue(), None)
  
          print('Test: Enqueue on empty stack')
          print('Test: Enqueue on non-empty stack')
          print('Test: Multiple enqueue in a row')
          num_items = 3
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for stacks_queues/ (#276) 
stacks_queues/queue_from_stacks/test_queue_from_stacks.py