def testInit(self):
"""
testInit makes assertations about things
that should happen when a HelperRobot
is created.
"""
mediator = RobotMediator()
helper = HelperRobot(mediator)
# Is helper an instance of HelperRobot?
self.assertIsInstance(helper, HelperRobot)
# Is helper also an instance of Robot?
self.assertIsInstance(helper, Robot)
# Robot should not be working on a task yet.
self.assertFalse(helper.isRunning())
# helper should have been added to mediator's
# list of robots.
self.assertIn(helper, mediator.getRobots())
