Numbers to LCD

KataNumbersToLCD.groovy

class NumberToLCD{

	def ledsDisplaySmall = ["_","|","|","_","|","|","_"]
	def ledsDisplayBig = [" ","-"," ","|"," ","|"," ","-"," ","|"," ","|"," ","-"," "]
	def displaysBig = [
		[2,4,6,10,12,14], 	// 0
		[6,12],				// 1
		[2,6,8,10,14], 		// 2
		[2,6,8,12,14],		// 3
		[4,6,8,5,12],		// 4
		[2,4,8,12,14],		// 5
		[2,4,8,10,12,14],	// 6
		[2,6,12],			// 7
		[2,4,6,8,10,12,14],	// 8
		[2,4,6,8,12,14]		// 9
	]
	def displaysSmall = [
		[1,1,1,0,1,1,1],	// 0
		[0,0,1,0,1,0,0],	// 1
		[1,1,1,1,1,1,1], 	// 2
		[1,1,1,1,1,1,1], 	// 3
		[1,1,1,1,1,1,1], 	// 4
		[1,1,1,1,1,1,1], 	// 5
		[1,1,1,1,1,1,1], 	// 6
		[1,1,1,1,1,1,1], 	// 7
		[1,1,1,1,1,1,1], 	// 8
		[1,1,1,1,1,1,1], 	// 9
	]

	String transformBig(Integer number){
		def display = ""
		def thisDisplay = displaysBig[number]
		for(Integer i=0;i<ledsDisplayBig.size();i++){
			if(i%3 == 0)
				display += "\n"
			if(thisDisplay.contains(i+1))
				display += ledsDisplayBig[i]
			else
				display += " "
		}
		display
	}

	String transformSmall(Integer number){
		def display = ""
		def thisDisplay = displaysSmall[number]
		def incrementador = 0
		for(Integer i = 0; i<9;i++){
			if(i%3 == 0)
				display+="\n"
			if(thisDisplay[i] && i<1){
				display+=" _ \n"
				incrementador++;
			}
			if(thisDisplay[i] && i>=1){
				display += ledsDisplaySmall[incrementador]
				incrementador++
			}else{
				display += " "
			}
		}
		display
	}
}


class NumberToLCDTestsCases extends GroovyTestCase{

	def numberToLCD

	void setUp() {
		numberToLCD = new NumberToLCD()
	}

	void testNumberEightBig(){
		def eight = "\n - \n| |\n - \n| |\n - "
		assert numberToLCD.transformBig(8) == eight
		0.upto(9){ n ->
			println numberToLCD.transformBig(n)
			println ""
		}
	}

	void testNumberEightSmall(){
		def eight = "\n _ \n|_|\n|_|"
		assert numberToLCD.transformSmall(8) == eight
		0.upto(9){ n ->
			println numberToLCD.transformSmall(n)
			println ""
		}
	}
}