Python RaceCar.apply_brakes Examples

Example #1

def test_accelerate_race_car_multiple_times_when_nitro_available_and_update_current_speed(
):

    # Arrange
    race_car = RaceCar(color='Red',
                       max_speed=100,
                       acceleration=15,
                       tyre_friction=15)
    current_speed_value = 85
    race_car.start_engine()
    race_car.accelerate()
    race_car.accelerate()
    race_car.accelerate()
    race_car.accelerate()
    race_car.accelerate()
    race_car.apply_brakes()
    race_car.apply_brakes()
    race_car.apply_brakes()

    # Act
    race_car.accelerate()
    race_car.accelerate()
    race_car.accelerate()

    # Assert
    assert race_car.current_speed == current_speed_value

Example #2

def test_apply_breake_racecar_current_equals_to_half_max_speed_returns_nitro_zero():
    # Arrange
    racecar = RaceCar(color="Red", max_speed=30, acceleration=15, tyre_friction=7)
    racecar.start_engine()
    racecar.accelerate()

    # Act
    racecar.apply_brakes()

    # Assert
    assert racecar.nitro == 0

Example #3

def test_accelerate_racecar_more_than_max_limit_with_nitro_returns_current_speed():
    # Arrange
    racecar = RaceCar(color="Red", max_speed=25, acceleration=10, tyre_friction=7)
    racecar.start_engine()
    racecar.accelerate()
    racecar.accelerate()
    racecar.apply_brakes()

    # Act
    racecar.accelerate()

    # Assert
    assert racecar.current_speed == 25

Example #4

def test_apply_brakes_to_race_car_and_update_current_speed():

    # Arrange
    race_car = RaceCar(color='Red',
                       max_speed=100,
                       acceleration=10,
                       tyre_friction=10)
    current_speed_value = 0
    race_car.start_engine()
    race_car.accelerate()

    # Act
    race_car.apply_brakes()

    # Assert
    assert race_car.current_speed == current_speed_value

Example #5

def test_apply_brakes_when_race_car_current_speed_is_more_than_tyre_friction_and_update_current_speed(
):

    # Arrange
    race_car = RaceCar(color='Red',
                       max_speed=4,
                       acceleration=4,
                       tyre_friction=3)
    current_speed_value = 1
    race_car.start_engine()
    race_car.accelerate()

    # Act
    race_car.apply_brakes()

    # Assert
    assert race_car.current_speed == current_speed_value

Example #6

def test_apply_brakes_to_race_car_when_current_speed_not_more_than_half_the_max_speed_and_nitro_value(
):

    # Arrange
    race_car = RaceCar(color='Red',
                       max_speed=100,
                       acceleration=20,
                       tyre_friction=10)
    current_speed_value = 0
    race_car.start_engine()
    race_car.accelerate()
    race_car.accelerate()
    nitro_value = 0

    # Act
    race_car.apply_brakes()

    # Assert
    assert race_car.nitro == nitro_value

Example #7

def test_apply_break_when_current_speed_is_less_than_max_speed_returns_current_speed():
    # Arrange
    racecar1 = RaceCar(color="None", max_speed=100, acceleration=10, tyre_friction=1)
    racecar1.start_engine()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.accelerate()
    racecar1.apply_brakes()

    # Act
    racecar1.accelerate()

    # Assert
    assert racecar1.current_speed == 92

Example #8

def test_accelerate_race_car_when_nitro_available_and_update_current_speed():
    import math
    # Arrange
    color = 'Red'
    max_speed = 20
    acceleration = 6
    tyre_friction = 3
    race_car = RaceCar(color=color,
                       max_speed=max_speed,
                       acceleration=acceleration,
                       tyre_friction=tyre_friction)
    current_speed_value = math.ceil((2 * acceleration - tyre_friction) +
                                    (0.3) * acceleration + acceleration)
    race_car.start_engine()
    race_car.accelerate()
    race_car.accelerate()
    race_car.apply_brakes()

    # Act
    race_car.accelerate()

    # Assert
    assert race_car.current_speed == current_speed_value