code: def testAROONOSC(self):
      barDs = self.__loadBarDS()
      self.assertAmountsAreEqual(
          indicator.AROONOSC(barDs, 252, 14)[14], -21.4285
      )
      self.assertAmountsAreEqual(
          indicator.AROONOSC(barDs, 252, 14)[14 + 6], -21.4285
      )
      self.assertAmountsAreEqual(
          indicator.AROONOSC(barDs, 252, 14)[14 + 7], -71.4285
      )
      self.assertAmountsAreEqual(
          indicator.AROONOSC(barDs, 252, 14)[-2], -28.5714
      )
      self.assertAmountsAreEqual(
          indicator.AROONOSC(barDs, 252, 14)[-1], -14.28571
      )
  
imports: import datetime
  import talib
  from six.moves import xrange
  from .None import common
  from pyalgotrade.talibext import indicator
  from pyalgotrade import bar
  from pyalgotrade import dataseries
  from pyalgotrade.dataseries import bards
label_desc: Use image node_id 11 for calling the TestCase obj's underlying member method code with example usage: obj.testAROONOSC() without return types