Car-4.js

# Implement the Car class appropriately
class Car:
    def __init__(self, color, max_speed, acceleration, tyre_friction):
        self.color=color
        self.max_speed=max_speed
        self.acceleration=acceleration
        self.tyre_friction=tyre_friction
        self.is_engine_started=False
        self.current_speed=0

    def start_engine(self):
        self.is_engine_started=True

    def stop_engine(self):
        self.is_engine_started=False

    def accelerate(self):
        if self.is_engine_started:
            if self.current_speed<self.max_speed:
                self.current_speed+=self.acceleration
        else:
            print("Car has not started yet")

    def apply_brakes(self):
        self.current_speed-=self.tyre_friction
        if self.current_speed<0:
            self.current_speed=0
            


# You need not change any code below.
# Do not call this function anywhere. It will automatically be called internally during tests.
def default_test():
    car = Car(color="Red", max_speed=250, acceleration=10, tyre_friction=3)
    car.start_engine()
    car.accelerate()  # Calling the accelerate method when the is_engine_started is True
    print(car.current_speed)  # 10
    car.apply_brakes()  # Calling the apply_brakes method
    # current_speed of the car should decrease according to the tyre_friction value.
    print(car.current_speed)   # (10 - 3 => 7)
    car.apply_brakes()
    print(car.current_speed)  # 7 - 3 => 4
    car.apply_brakes()
    print(car.current_speed)  # 4 - 3 => 1
    car.apply_brakes()
    print(car.current_speed)  # 1 - 3 => 0 (current_speed should never go behind 0.)