Test Swift Tower Recursive implementation

SwiftTowerTests

import UIKit
import XCTest
import SwiftTower

class SwiftTowerTests: XCTestCase {
    
    override func setUp() {
        super.setUp()
        // No extra setup code here.
    }
    
    override func tearDown() {
        // No extra teardown code here.
        super.tearDown()
    }
    
    func testRecursiveTowerOfHanoi() {
        let numberOfDisks = 4
        let destStack:Stack<Int> = Stack<Int>()
        
        func checkTower(dest:Stack<Int>, numberOfDisks:Int) -> Bool {
            var match = true
            var index = 1
            while match && dest.size() > 0 && index <= numberOfDisks {
                match = dest.pop() == index
                index++
            }
            return match
        }
        
        tower(numberOfDisks, source:.Tower1, dest:.Tower3 , temp:.Tower2, finalDest:.Tower3, destStack)
        XCTAssert(checkTower(destStack, numberOfDisks), "Pass")
    }
}