def test_create_race_car_object_instance_multiple_times_with_valid_details(
color, max_speed, acceleration, tyre_friction):
# Arrange
# Act
race_car_1 = RaceCar(color=color,
max_speed=max_speed,
acceleration=acceleration,
tyre_friction=tyre_friction)
race_car_2 = RaceCar(color=color,
max_speed=max_speed,
acceleration=acceleration,
tyre_friction=tyre_friction)
# Assert
assert race_car_1.color == color
assert race_car_1.max_speed == max_speed
assert race_car_1.acceleration == acceleration
assert race_car_1.tyre_friction == tyre_friction
assert race_car_2.color == color
assert race_car_2.max_speed == max_speed
assert race_car_2.acceleration == acceleration
assert race_car_2.tyre_friction == tyre_friction
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
def test_sound_horn_when_race_car_engine_stoped_and_return_start_engine_to_sound_horn(
capfd):
# Arrange
race_car = RaceCar(color='Red',
max_speed=130,
acceleration=10,
tyre_friction=3)
start_engine_to_sound = "Start the engine to sound_horn\n"
# Act
race_car.sound_horn()
output = capfd.readouterr()
# Assert
assert output.out == start_engine_to_sound
def car2(): # Our Fixture function
from race_car import RaceCar
car_obj = RaceCar(color="blue",
max_speed=50,
acceleration=20,
tyre_friction=4)
return car_obj
def test_accelerate_race_car_when_engine_stoped_and_return_start_engine_to_accelerate(
capfd):
# Arrange
race_car = RaceCar(color='Red',
max_speed=20,
acceleration=10,
tyre_friction=5)
start_engine_to_accelerate = "Start the engine to accelerate\n"
# Act
race_car.accelerate()
output = capfd.readouterr()
# Assert
assert output.out == start_engine_to_accelerate
def car(): # Our Fixture function
from race_car import RaceCar
car_obj = RaceCar(color="Red",
max_speed=30,
acceleration=10,
tyre_friction=3)
return car_obj
def test_invalid_max_speed_attr_for_race_car(color, max_speed,
acceleration, tyre_friction):
#arrange
#act
with pytest.raises(Exception) as err:
assert RaceCar(color=color, max_speed=max_speed,
acceleration=acceleration, tyre_friction=tyre_friction)
assert str(err.value) == "Invalid value for max_speed"
def race_car():
race_car_obj = RaceCar(color='Red',
max_speed=30,
acceleration=10,
tyre_friction=3)
return race_car_obj
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
def test_apply_brakes_to_race_car_when_current_speed_more_than_half_the_max_speed_and_update_nitro(
):
# 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()
race_car.accelerate()
nitro_value = 10
# Act
race_car.apply_brakes()
# Assert
assert race_car.nitro == nitro_value
def test_accelerate_racecar_with_different_acceleration():
# Arrange
racecar = RaceCar(color="Red", max_speed=50, acceleration=10,
tyre_friction=3)
current_speed = 30
racecar.start_engine()
# Act
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
# Assert
assert racecar.current_speed == current_speed
def test_race_car_object_instance_create_and_engine_status():
# Arrange
race_car = RaceCar(color='Red',
max_speed=130,
acceleration=10,
tyre_friction=3)
engine_started = False
# Act
# Assert
assert race_car.is_engine_started == engine_started
def test_race_car_object_instance_create_and_nitro_status():
# Arrange
race_car = RaceCar(color='Red',
max_speed=130,
acceleration=10,
tyre_friction=3)
nitro_value = 0
# Act
# Assert
assert race_car.nitro == nitro_value
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
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
def test_create_race_car_object_with_invalid_acceleration_value_raise_error(
color, max_speed, acceleration, tyre_friction):
# Arrange
invalid_acceleration = 'Invalid value for acceleration'
# Act
with pytest.raises(ValueError) as race_car:
assert RaceCar(color=color,
max_speed=max_speed,
acceleration=acceleration,
tyre_friction=tyre_friction)
# Assert
assert str(race_car.value) == invalid_acceleration
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
def test_accelerate_racecar_with_minimal_values_returns_current_speed():
# Arrange
racecar = RaceCar(color="Red", max_speed=1, acceleration=1, tyre_friction=1)
racecar.start_engine()
# Act
racecar.accelerate()
# Assert
assert racecar.current_speed == 1
def test_accelerate_race_car_when_current_speed_reaches_maximum_and_update_current_speed(
):
# Arrange
race_car = RaceCar(color='Red',
max_speed=30,
acceleration=10,
tyre_friction=5)
current_speed_value = 30
race_car.start_engine()
# Act
race_car.accelerate()
race_car.accelerate()
race_car.accelerate()
race_car.accelerate()
# Assert
assert race_car.current_speed == current_speed_value
def test_accelerate_race_car_multiple_times_when_nitro_not_available_and_update_current_speed(
):
# Arrange
race_car = RaceCar(color='Red',
max_speed=100,
acceleration=10,
tyre_friction=5)
current_speed_value = 40
race_car.start_engine()
# Act
race_car.accelerate()
race_car.accelerate()
race_car.accelerate()
race_car.accelerate()
# Assert
assert race_car.current_speed == current_speed_value
def test_accelerate_racecar_returns_current_speed(
max_speed, acceleration, tyre_friction, current_speed):
# Arrange
racecar = RaceCar(color="Red", max_speed=max_speed,
acceleration=acceleration, tyre_friction=tyre_friction)
racecar.start_engine()
# Act
racecar.accelerate()
# Assert
assert racecar.current_speed == current_speed
def test_create_race_car_object_instance_with_valid_details():
# Arrange
color = 'Blue'
max_speed = 30
acceleration = 10
tyre_friction = 5
# Act
race_car = RaceCar(color=color,
max_speed=max_speed,
acceleration=acceleration,
tyre_friction=tyre_friction)
# Assert
assert race_car.color == color
assert race_car.max_speed == max_speed
assert race_car.acceleration == acceleration
assert race_car.tyre_friction == tyre_friction
def test_sound_horn_when_race_car_engine_started_and_return_race_car_sound(
capfd):
# Arrange
race_car = RaceCar(color='Red',
max_speed=130,
acceleration=10,
tyre_friction=3)
sound = "Peep Peep\nBeep Beep\n"
race_car.start_engine()
# Act
race_car.sound_horn()
output = capfd.readouterr()
# Assert
assert output.out == sound
def racecar2():
racecar_obj2 = RaceCar(color='Red', max_speed=700, acceleration=80, tyre_friction=30)
return racecar_obj2
def test_accelerate_racecar_more_than_max_speed_returns_current_speed_equal_to_max_speed(
):
# Arrange
racecar = RaceCar(color="Red",
max_speed=50,
acceleration=10,
tyre_friction=3)
current_speed = 50
racecar.start_engine()
# Act
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
racecar.accelerate()
# Assert
assert racecar.current_speed == current_speed
def race_car2():
race_car_obj = RaceCar(color="blue",
max_speed=50,
acceleration=20,
tyre_friction=4)
return race_car_obj
def race_car3():
car_obj = RaceCar(color="blue",
max_speed=10,
acceleration=3,
tyre_friction=3)
return car_obj
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
def racecar1():
racecar_obj1 = RaceCar(color='Red', max_speed=300, acceleration=30, tyre_friction=10)
return racecar_obj1