package
{
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.text.TextField;
    import flash.utils.*;  
	public class TestConcat extends Sprite
	{
		private var iteration_count:int=0
		private var concat_total:int=0
		private var slice_total:int=0
		private var clone_total:int=0
		private var tf:TextField = new TextField()
		private var test_array:Array = [];
		
		public function TestConcat():void
		{
			tf.x = tf.y = 100; tf.width = 600;
			addChild(tf)

			//Set up array to copy  
			for(var i:int = 0; i < 1000000; i++) test_array.push(i);  
			//Mouse click to rerun test
			stage.addEventListener(MouseEvent.CLICK, go);
			//First run
			go()
		}
		
		private function go(e:Event = null):void
		{
			iteration_count=concat_total=slice_total=clone_total=0
			addEventListener(Event.ENTER_FRAME, iterate)
		}

		//Loop through tests
		private function iterate(e:Event=null):void
		{
			concat_total +=testConcat()
			slice_total += testSlice()
			clone_total += testByteArrayClone()
			iteration_count++
			tf.text = "Av. Concat time=" + (concat_total / iteration_count) 
					+ "ms  Av. Slice time=" + (slice_total / iteration_count)
					+ "ms  Av. BA Clone time=" + (clone_total / iteration_count) + "ms";
			if(iteration_count<99) removeEventListener(Event.ENTER_FRAME,iterate)
		}

		//test array slice
		private function testSlice():int
		{
			var time_slice_start:Number = getTimer();  
			var slice_copy:Array = test_array.slice(0);
			return getTimer()-time_slice_start
		}
			
		//test array concat
		private function testConcat():int
		{
			var time_concat_start:Number = getTimer();  
			var concat_copy:Array = test_array.concat();  
			return getTimer()-time_concat_start
		}
		
		//test BA Clone method
		private function testByteArrayClone():int
		{
			var time_concat_start:Number = getTimer();  
			var concat_copy:Array = clone(test_array); 
			return getTimer()-time_concat_start
		}
		
		//Clone method for Deep Objects(via Bruno)
		private function clone(source:Object):*
		{
			var myBA:ByteArray = new ByteArray();
			myBA.writeObject(source);
			myBA.position = 0;
			return(myBA.readObject());
		}
	}
}