code: def testBounded(self):
      barFeed = self.__getFeed()
      bars = barFeed[VWAPTestCase.Instrument]
      vwap_ = vwap.VWAP(bars, 50, True, 2)
      barFeed.loadAll()
  
      outputValues = [14.605005665747331, 14.605416923506045]
      for i in xrange(2):
          self.assertEqual(
              round(vwap_[i], 4), round(outputValues[i], 4)
          )
  
file_path: pyalgotrade/testcases/technical_vwap_test.py
imports: from six.moves import xrange
  from .None import common
  from pyalgotrade.technical import vwap
  from pyalgotrade.barfeed import yahoofeed
label_desc: Use image node_id 8 for calling the VWAPTestCase obj's underlying member method code with example usage: obj.testBounded() without return types