old_contents: import unittest
  from simplejson import dumps
  from twisted.trial.unittest import TestCase
  from twisted.internet import defer
  
  from mock import patch, Mock
  from van.contactology import Contactology
  
  class TestProxy(TestCase):
  
      @defer.inlineCallbacks
      def test_list_return(self):
          patcher = patch('van.contactology.getPage')
          getPage = patcher.start()
          try:
              proxy = Contactology('API Key')
              getPage.return_value = dumps([])
              out = yield proxy.Campaign_Find()
              yield self.assertEquals(out, [])
          finally:
              patcher.stop()
  
new_contents: import unittest
  from simplejson import dumps
  from twisted.trial.unittest import TestCase
  from twisted.internet import defer
  
  from mock import patch, Mock
  from van.contactology import Contactology, APIError
  
  class TestProxy(TestCase):
  
      @defer.inlineCallbacks
      def test_list_return(self):
          patcher = patch('van.contactology.getPage')
          getPage = patcher.start()
          try:
              proxy = Contactology('API Key')
              getPage.return_value = dumps([])
              out = yield proxy.Campaign_Find()
              yield self.assertEquals(out, [])
          finally:
              patcher.stop()
      
      @defer.inlineCallbacks
      def test_api_error(self):
          patcher = patch('van.contactology.getPage')
          getPage = patcher.start()
          try:
              proxy = Contactology('API Key')
              getPage.return_value = dumps({'code': 221, 'message': 'Key not found', 'result': 'error'})
              yield self.failUnlessFailure(proxy.List_Get_Active_Lists(), APIError)
          finally:
              patcher.stop()
  
subject: Test for exception raising on API error.