new_contents: from unittest import mock
  
  from geometry_msgs.msg import PoseStamped
  import rospy
  from beeper import Beeper
  
  
  class TestBeeper(object):
      def setup(self):
          rospy.init_node("beeper_test", anonymous=True)
          self.beeper = Beeper()
          self.pose = PoseStamped()
  
      @mock.patch.object(Beeper, "beep", autospec=True)
      def test_beep(self, mock_beep):
          self.beeper.beep()
          mock_beep.assert_called_with(self.beeper)
  
  
  
subject: Add test file for beeper logic