code: def test_order_rounding(self):
      answer_key = [
          (0, 0),
          (10, 10),
          (1.1, 1),
          (1.5, 1),
          (1.9998, 1),
          (1.99991, 2),
      ]
  
      for input, answer in answer_key:
          self.assertEqual(answer, TradingAlgorithm.round_order(input))
  
          self.assertEqual(
              -1 * answer, TradingAlgorithm.round_order(-1 * input)
          )
  
imports: from nose_parameterized import parameterized
  import pandas
  from zipline.algorithm import TradingAlgorithm
  import zipline.api
  import zipline.errors
  from zipline.finance.execution import StopLimitOrder
  import zipline.testing.fixtures
  from zipline.testing.predicates import assert_equal
  import zipline.test_algorithms
label_desc: Use image node_id 1 for calling the TestOrderRounding obj's underlying member method code with example usage: obj.test_order_rounding() without return types