new_contents: from twisted.trial import unittest
  
  from zope.interface.verify import verifyObject
  
  from opennsa.interface import INSIProvider, INSIRequester
  
  from opennsa import registry
  from opennsa import aggregator
  from opennsa.backends.common import genericbackend
  
  
  
  
  class InterfaceTest(unittest.TestCase):
  
      def setUp(self):
          self.sr = registry.ServiceRegistry()
  
  
      def testGenericBackend(self):
          simple_backend = genericbackend.GenericBackend('network', None, None, None)
          verifyObject(INSIProvider, simple_backend)
  #    testGenericBackend.skip = 'Interface undergoing overhaul'
  
  
      def testAggregator(self):
  
          aggr = aggregator.Aggregator('network', None, self.sr, None, None)
  
          verifyObject(INSIProvider, simple_backend)
  
      testAggregator.skip = "skip"
  
  
subject: add rudimentary test for interface compliance