//Q4
public class StartGrading {
	public static void testVehicle() {
//The Vehicle class is abstract. We cannot create objects from this class. Therefore, we cannot test anything
	}

	public static void testCar() {
		// test case for constructors
		try {
			// exception
			Car c1 = new Car(70, 80);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be greater than speed limit!"));
		}
		try {
			// exception
			Car c2 = new Car(70, -10);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be negative!"));
		}
		// test case for accelerate, canFly and getSpeed methods
		try {
			Car c3 = new Car(100, 80);
			// test the canFly method
			System.out.println(c3.canFly() == false);
			c3.accelerate(10);
			System.out.println(c3.getSpeed() == 90);
			// test the accelerate with positive amount
			c3.accelerate(-20);
			System.out.println(c3.getSpeed() == 70);
			// test the accelerate with negative amount
			c3.accelerate(35); // exception
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (ExceedSpeedLimit e) {
			System.out
					.println(e.getMessage().equals("Current speed is 70. Accelerate 35 will exceed the speed limit!"));
		} catch (NotEnoughSpeed e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (TrainSpeedChange e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
		try {
			Car c4 = new Car(100, 80);
			// exception
			c4.accelerate(-90);
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (ExceedSpeedLimit e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (NotEnoughSpeed e) {
			System.out.println(e.getMessage().equals("Current speed is " + 80 + ", not enough speed to decelerate!"));
		} catch (TrainSpeedChange e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
	}

	public static void testAircraft() {
		// test case for constructors
		try {
			// Exception
			Aircraft a1 = new Aircraft(70, 80, 1000);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be greater than speed limit!"));
		} catch (BadAltitudeSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
		try {
			// exception
			Aircraft a2 = new Aircraft(70, -10, 1000);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be negative!"));
		} catch (BadAltitudeSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
		try {
			// exception
			Aircraft a3 = new Aircraft(700, 200, -10);
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (BadAltitudeSetting e) {
			System.out.println(e.getMessage().equals("Altitude cannot be negative!"));
		}
		// Test case for accelerate, canFly, getSpeed and getAltitude methods
		try {
			Aircraft a4 = new Aircraft(700, 200, 100);
			// test the getAltitude method
			System.out.println(a4.getAltitude() == 100);
			// test the canFly method
			System.out.println(a4.canFly() == true);
			a4.accelerate(100);
			System.out.println(a4.getSpeed() == 300);
			// test the accelerate with positive amount
			a4.accelerate(-200);
			System.out.println(a4.getSpeed() == 100);
			// test the accelerate with negative amount
			// exception
			a4.accelerate(650);
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (BadAltitudeSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (ExceedSpeedLimit e) {
			System.out.println(
					e.getMessage().equals("Current speed is 100. Accelerate 650 will exceed the speed limit!"));
		} catch (NotEnoughSpeed e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (TrainSpeedChange e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
		try {
			Aircraft a5 = new Aircraft(700, 200, 100);
			// exception
			a5.accelerate(-300);
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (BadAltitudeSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (ExceedSpeedLimit e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (NotEnoughSpeed e) {
			System.out.println(e.getMessage().equals("Current speed is " + 200 + ", not enough speed to decelerate!"));
		} catch (TrainSpeedChange e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		}
	}

	public static void testTrain() {
		// test case for constructors
		try {
			// exception
			Train t1 = new Train(350, 400);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be greater than speed limit!"));
		}
		try {
			// exception
			Train t2 = new Train(350, -100);
		} catch (BadSpeedSetting e) {
			System.out.println(e.getMessage().equals("Speed cannot be negative!"));
		}
		// test case for accelerate, canFly and getSpeed methods
		try {
			Train t3 = new Train(350, 300);
			// test the canFly method
			System.out.println(t3.canFly() == false);
			// test the getSpeed
			System.out.println(t3.getSpeed() == 300);
			// exception
			t3.accelerate(50);
		} catch (BadSpeedSetting e) {
			System.out.println("BUG! THIS MUST NEVER HAPPEN!");
		} catch (TrainSpeedChange e) {
			System.out.println(e.getMessage().equals("Do not try to accelerate or decelerate the train!"));
		}
	}

	public static void main(String[] args) {
		Vehicle.testVehicle();
		Car.testCar();
		Aircraft.testAircraft();
		Train.testTrain();
	}
}