def test_delorean_time_travel():
"test the time travel capabilities"
delo = Delorean()
today = datetime.date.today()
assert delo.get_date() == today
tomorrow = datetime.date(2199, 12, 01)
delo.set_target_date('01/12/2199')
# no time travel
assert delo.get_date() == today
# insert plutonium
delo.insert_plutonium()
# no time travel
assert delo.get_date() == today
# go below 88mph
delo.set_speed(87)
# no time travel
assert delo.get_date() == today
# go beyond 88mph
delo.set_speed(89)
assert delo.get_date() == tomorrow
assert delo.has_plutonium == False
def test_delorean_insert_plutonium():
"test the delorean plutonium insertion"
delo = Delorean()
assert delo.has_plutonium == False
delo.insert_plutonium()
assert delo.has_plutonium == True
