Kata:2010-12-12-FizzBuzz.groovy

import groovy.util.GroovyTestCase

//múltiplos de 3 > "Fizz", múltiplos de 5 > "Buzz", múltiplos de 3 y 5 > "FizzBuzz"
class FizzBuzz extends GroovyTestCase{
	void testSiNoCoincideDevuelveElNumero(){
		assertEquals("1", fizzBuzz(1))
	}
	
	void testSiEsMultiploDe3DevuelveFizz(){
		assertEquals("Fizz", fizzBuzz(9))
	}
	
	void testSiEsMultiploDe5DevuelveBuzz(){
		assertEquals("Buzz", fizzBuzz(10))
	}
	
	void testSiEsMultiplode3Y5DevuelveFizzBuzz(){
		assertEquals("FizzBuzz", fizzBuzz(45))
	}
	
	void testSiEsCeroDevuelveCero(){
		assertEquals("0", fizzBuzz(0))
	}
	
	static final int FIZZ_NUMBER = 3
	static final int BUZZ_NUMBER = 5
	static final int FIZZBUZZ_NUMBER = FIZZ_NUMBER * BUZZ_NUMBER
	String fizzBuzz(int value){
		if(valueIsNotZeroAndDivisibleBy(value, FIZZBUZZ_NUMBER))
			return "FizzBuzz"
		if(valueIsNotZeroAndDivisibleBy(value, FIZZ_NUMBER))
			return "Fizz"
		if(valueIsNotZeroAndDivisibleBy(value, BUZZ_NUMBER))
			return "Buzz"
		return value.toString()
	}
	
	Boolean valueIsNotZeroAndDivisibleBy(int value, int divisor){
		return (value!=0 && valueIsDivisibleBy(value, divisor))
	}
	
	Boolean valueIsDivisibleBy(int value, int divisor){
		return (value % divisor == 0)
	}
}