car2.setColour('White')
print('The colour is ' + car2.getColour())
# Similar functionality in mileage, move and engineSize except in this case Mileage is at 300 instead of the
# default value of 0. This results in the mileage starting at 300 and becoming 320 after the move function.
# Unlike petrol and diesel cars which have fuel cylinders electric cars require fuel cells to run. The function
# setNumberOfFuelCells takes in 2 values self and the value for fuel cells in this case 2. The next line prints
# an appropriate message and uses the getNumberOfFuelCells which returns the value held in the variable which is 2.
car2.setMileage(300)
car2.move(20)
print('The mileage is ' + str(car2.getMileage())) + 'kms'
car2.engineSize = '2.1'
print 'The engine size is ' + car2.engineSize
car2.setNumberOfFuelCells(2)
print('The number of fuel cells is ' + str(car2.getNumberOfFuelCells()))
# A HybridCar Class is called by car3 allowing it to use the functions and variables of the class. A hybrid is
# 1 part standard motor car and 1 part electric car so it will use a cylinder and a cell function. The make
# takes in the value Toyota Prius and prints a message to the user. The colour is set at blue and printed.
# Same functionality as other mileage in this case 100 is the value that is set, next 17 is added using move
# resulting in a value of 117kms. The engineSize variable is set as 3.1. Hybrid cars require both cells and
# cylinders so it will use both functions.
car3 = HybridCar()
car3.setMake('Toyota Prius')
print '\nOur hybrid option is ' + car3.getMake()
car3.setColour('Blue')
print('The colour is ' + car3.getColour())
class TestElectricCar(unittest.TestCase):
# The ElectricCar calls itself using self.
def setUp(self):
self.electric_car = ElectricCar()
def test_electricCar_fuel_cells(self):
# The default value for an electric car is called from the ElectricCar class which is 2 which is tested to
# make sure the base class ElectricCar functions are being correctly implemented. The setNumberOfFuelCells
# is used to change the default value from 2 to 8, this is tested and it has become 8 so is true. 5 and 7
# are then placed as testing values for getNumberofFuelCells. Note set doesn't change default values held
# in base class.
self.assertEqual(2, self.electric_car.getNumberOfFuelCells())
self.electric_car.setNumberOfFuelCells(8)
self.assertEqual(8, self.electric_car.getNumberOfFuelCells())
self.electric_car.setNumberOfFuelCells(5)
self.assertEqual(5, self.electric_car.getNumberOfFuelCells())
self.electric_car.setNumberOfFuelCells(7)
self.assertEqual(7, self.electric_car.getNumberOfFuelCells())
def test_electricCar_mileage_and_move(self):
# I am testing mileage and move for all cars to ensure correct implementation and because mileage is
# an important factor for NCT tests and how many kilometers are on the clock.
# As in the test_car_mileage 1st the default value is called this time from the ElectricCar class.
# Move is then called using the value 15 is this is tested against the value retrieved from getMileage
# which is 15 as well so it's true. Mileage is then increased by 6.5 to 21.5. Next the setMileage function
# calls the function from the ElectricCar class which has inherited all the functions of the base class Car.
# All the types of cars have inherited all the functions of Car. In this case SetMileage is called and
# takes the value 40. This is tested using the getMileage function to ensure it's changed to 40 and it has.
# The value 0 is tested and mileage variable remains 40.
self.assertEqual(0, self.electric_car.getMileage())
self.electric_car.move(15)
self.assertEqual(15, self.electric_car.getMileage())
self.electric_car.move(6.5)
self.assertEqual(21.5, self.electric_car.getMileage())
self.electric_car.setMileage(40)
self.assertEqual(40, self.electric_car.getMileage())
self.electric_car.move(0)
self.assertEqual(40, self.electric_car.getMileage())
def test_electricCar_make(self):
# Even though make, engineSize, colour and paint are tested in the base class I feel it's important to
# have test cases for the subclass' that implement the functions to ensure they are correctly inherited
# with the same functionality so the default value ' ' is tested, a string with 1 word and a string with
# 2 words. Also i'm not using car.getMake but electric_car.getMake this will be the case in the other
# subclass' where the functions are implemented from the subclass not the superclass/base class.
self.assertEqual(' ', self.electric_car.getMake())
self.electric_car.setMake('Charger')
self.assertEqual('Charger', self.electric_car.getMake())
self.electric_car.setMake('Super Charger')
self.assertEqual('Super Charger', self.electric_car.getMake())
def test_electricCar_engineSize(self):
# Testing engineSize for ElectricCar class.
self.assertEqual(' ', self.electric_car.getEngineSize())
self.electric_car.setEngineSize(1.2)
self.assertEqual(1.2, self.electric_car.getEngineSize())
self.electric_car.setEngineSize(0.8)
self.assertEqual(0.8, self.electric_car.getEngineSize())
def test_electricCar_colour_and_paint(self):
# Testing colour and paint for ElectricCar
self.assertEqual(' ', self.electric_car.getColour())
self.electric_car.paint('pink')
self.assertEqual('pink', self.electric_car.getColour())
self.electric_car.paint('orange')
self.assertEqual('orange', self.electric_car.getColour())
self.electric_car.setColour('yellow')
self.assertEqual('yellow', self.electric_car.getColour())