'Tests if invoke_service evaluates the right response'

def test_invoke_service(self):

    self.webclient._endpoint = eseries_fake.FAKE_ENDPOINT_HTTP
    self.mock_object(self.webclient.conn, 'request', return_value=eseries_fake.FAKE_INVOC_MSG)
    result = self.webclient.invoke_service()
    self.assertIsNotNone(result)
