new_contents: import collections
  import unittest
  from flexmock import flexmock
  
  from pony.jobs import WorldTick
  
  
  class WorldTickTest(unittest.TestCase):
      def setUp(self):
          queue = collections.deque()
          self.fake_bot = flexmock()
          self.job = WorldTick(self.fake_bot, queue, interval=5)
  
      def test_init(self):
          self.assertEqual(self.job.interval, 5)
          self.assertIsInstance(self.job.queue, collections.deque)
          self.assertIsNotNone(self.job.bot)
  
      def test_run(self):
          fake_task = flexmock()
          fake_slack = flexmock()
  
          (flexmock(fake_task)
           .should_receive('execute')
           .with_args(bot=self.fake_bot, slack=fake_slack)
           .once())
  
          self.job.queue.append(fake_task)
          self.assertListEqual(self.job.run(fake_slack), list())
          self.assertEqual(len(self.job.queue), 0)
  
subject: Test jobs.