code: def test1NrtFeed(self):
      values = []
      now = datetime.datetime.now()
      datetimes = [
          now + datetime.timedelta(seconds=i) for i in xrange(10)
      ]
      nrtFeed = NonRealtimeFeed(copy.copy(datetimes))
      nrtFeed.getEvent().subscribe(lambda x: values.append(x))
  
      disp = dispatcher.Dispatcher()
      disp.addSubject(nrtFeed)
      disp.run()
  
      self.assertEqual(values, datetimes)
  
imports: import datetime
  import copy
  from six.moves import xrange
  from .None import common
  from pyalgotrade import observer
  from pyalgotrade import dispatcher
label_desc: Use image node_id 1 for calling the DispatcherTestCase obj's underlying member method code with example usage: obj.test1NrtFeed() without return types