code: def setUp(self):
      super(BaseZMQTestCase, self).setUp()
      if self.green and not have_gevent:
          raise SkipTest("requires gevent")
      self.context = self.Context.instance()
      self.sockets = []
  
imports: import sys
  import time
  from threading import Thread
  from unittest import TestCase
  from pytest import mark
  import zmq
  from zmq.utils import jsonapi
label_desc: Use image node_id 3 for calling the BaseZMQTestCase obj's underlying member method code with example usage: obj.setUp() without return types