code: def setUp(self):
      BaseTestCase.setUp(self)
      self.barsBuilder = broker_backtesting_test.BarsBuilder(
          BaseTestCase.TestInstrument, bar.Frequency.MINUTE
      )
      self.strategy = fillstrategy.DefaultStrategy()
  
file_path: pyalgotrade/testcases/fill_strategy_test.py
imports: import unittest
  import datetime
  from .None import broker_backtesting_test
  from pyalgotrade import broker
  from pyalgotrade.broker import fillstrategy
  from pyalgotrade.broker import backtesting
  from pyalgotrade import bar
label_desc: Use image node_id 1 for calling the DefaultStrategyTestCase obj's underlying member method code with example usage: obj.setUp() without return types