code: def testMOM(self):
      barDs = self.__loadBarDS()
      self.assertAmountsAreEqual(
          indicator.MOM(barDs.getCloseDataSeries(), 252, 14)[14], -0.50
      )
      self.assertAmountsAreEqual(
          indicator.MOM(barDs.getCloseDataSeries(), 252, 14)[15], -2.00
      )
      self.assertAmountsAreEqual(
          indicator.MOM(barDs.getCloseDataSeries(), 252, 14)[16], -5.22
      )
      self.assertAmountsAreEqual(
          indicator.MOM(barDs.getCloseDataSeries(), 252, 14)[-1], -1.13
      )
  
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 36 for calling the TestCase obj's underlying member method code with example usage: obj.testMOM() without return types