def testCanGetDistanceToPreviousCar(self):
car = Car(radius=100, alpha=0)
anotherCar = Car(radius=100, alpha=math.pi / 2)
car.previous_car = anotherCar
self.assertAlmostEqual(100 * math.sqrt(2), car.distance_to_previous_car)
def testAccelerateWhenDistanceToPreviousCarIsBig(self):
car = Car(radius=100, alpha=0, speed=1, speed_limit=2)
anotherCar = Car(radius=100, alpha=math.pi, speed=1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(1.2, car.speed)
def testDecelerateWhenDistanceToPreviousCarIsSmall(self):
car = Car(radius=100, alpha=0, speed=0.1)
anotherCar = Car(radius=100, alpha=0.5, speed=0.1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(0.08, car.speed)
def testStopWhenCrash(self):
car = Car(radius=100, alpha=0, speed=1)
anotherCar = Car(radius=100, alpha=0.01, speed=1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(0, car.speed)
def testAccelerateWhenDistanceToPreviousCarIsBig(self):
car = Car(radius=100, alpha=0, speed=1, speed_limit=2)
anotherCar = Car(radius=100, alpha=math.pi, speed=1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(1.2, car.speed)
def testDecelerateWhenDistanceToPreviousCarIsSmall(self):
car = Car(radius=100, alpha=0, speed=0.1)
anotherCar = Car(radius=100, alpha=0.5, speed=0.1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(0.08, car.speed)
def testCanGetDistanceToPreviousCar(self):
car = Car(radius=100, alpha=0)
anotherCar = Car(radius=100, alpha=math.pi / 2)
car.previous_car = anotherCar
self.assertAlmostEqual(100 * math.sqrt(2),
car.distance_to_previous_car)
def testStopWhenCrash(self):
car = Car(radius=100, alpha=0, speed=1)
anotherCar = Car(radius=100, alpha=0.01, speed=1)
car.previous_car = anotherCar
car.move()
self.assertAlmostEqual(0, car.speed)