Adding BookingTest with cancellation option as well

BookingTestWithCancellation.kt

class SetupTeardownWithDataProvider {
    @DataProvider
    fun getVehicleTypes(): MutableIterator<Array<Any>> {
        val vehicles = arrayListOf<Array<Any>>()

        vehicles.add(arrayOf(VehicleType.CAR))
        vehicles.add(arrayOf(VehicleType.CAR_XL))

        return vehicles.iterator()
    }

    @Test(dataProvider = "getVehicleTypes")
    fun testBookingCreation(vehicleType: VehicleType) {
        val booking = Booking()
        val orderId = booking.makeBooking(vehicleType)

        val isBookingCreated = booking.doesBookingExists(vehicleType, orderId)
        Assert.assertNotNull(isBookingCreated)
    }

    @Test
    fun testBookingCancellation() {
        val vehicleType = VehicleType.CAR_XL

        val booking = Booking()
        val orderId = booking.makeBooking(vehicleType)

        val isBookingCreated = booking.doesBookingExists(vehicleType, orderId)
        Assert.assertNotNull(isBookingCreated)

        booking.cancelBooking(vehicleType, orderId)
        val isBookingFound = booking.doesBookingExists(vehicleType, orderId)

        Assert.assertNotNull(isBookingCreated)
        Assert.assertFalse(isBookingFound!!)
    }
}