class_docstr: Tests for catalyst ExecutionStyle classes.
docstr: Basic unit tests for the MarketOrder class.
code: def test_market_order_prices(self):
      """
      Basic unit tests for the MarketOrder class.
      """
      style = MarketOrder()
  
      self.assertEqual(style.get_limit_price(True), None)
      self.assertEqual(style.get_limit_price(False), None)
  
      self.assertEqual(style.get_stop_price(True), None)
      self.assertEqual(style.get_stop_price(False), None)
  
file_path: catalyst/tests/test_execution_styles.py
imports: from nose_parameterized import parameterized
  from six.moves import range
  from catalyst.errors import BadOrderParameters
  from catalyst.finance.execution import LimitOrder, MarketOrder, StopLimitOrder, StopOrder
  from catalyst.testing.fixtures import WithLogger, CatalystTestCase
label_desc: Use image node_id 2 for calling the ExecutionStyleTestCase obj's underlying member method code with example usage: obj.test_market_order_prices() without return types