code: def testMAMA(self):
      ds = self.__loadMedPriceDS()
      self.assertAmountsAreEqual(
          indicator.MAMA(ds, 252, 0.5, 0.05)[0][32], 85.3643
      )
      self.assertAmountsAreEqual(
          indicator.MAMA(ds, 252, 0.5, 0.05)[0][-1], 110.1116
      )
  
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 30 for calling the TestCase obj's underlying member method code with example usage: obj.testMAMA() without return types