Unittest для python

def __init__(self):
        self._is_engine_started = False
        self._lights_type = None
        self._heater_status = "Cold"
        self._is_alarm_activated = True
        self._is_alarm_alarming = False
 
    def start_engine(self, key_pass):
        if self._is_key_password_matched(key_pass) and not self._is_alarm_alarming:
            self._deactivate_the_alarm()
            self._is_engine_started = True
            self._turn_the_lights_on()
            self._turn_the_seat_heater_on()
        else:
            self._turn_the_alarm_on()

import unittest
 
 
class TestCar(unittest.TestCase):
 
    def testFailUnless(self):
        self._is_engine_started.failUnless(True)
        #if engine = true fail test
 
    def testFailUnless(self):
        self._is_alarm_activated.failUnless(False)
        # if alarm = False fail test
 
 
    def testFailUnless(self):
        self._is_alarm_alarming.failUnless(True)
        # if alarm = True fail test
 
    def testNotEqualFail(self):
        self._is_key_password_matched.failUnlessEqual(123)
        # if immobilizer pass = not 123