AgileAlicanteJuly2011

FizzBuzzTest.java

import static org.junit.Assert.*;

import java.util.HashMap;

import org.junit.Test;

public class FizzBuzzTest {
	@Test
	public void devuelveUno() throws Exception {
		assertEquals("1", dime(1));
	}

	@Test
	public void devuelveDOs() throws Exception {
		assertEquals("2", dime(2));
	}

	@Test
	public void devuelvefizz() throws Exception {
		assertEquals("Fizz", dime(3));
	}

	@Test
	public void devuelveCinco() throws Exception {
		assertEquals("Buzz", dime(5));
	}

	@Test
	public void recibe6devuelveFizz() throws Exception {
		assertEquals("Fizz", dime(6));
	}

	@Test
	public void recibe10devuelveBuzz() throws Exception {
		assertEquals("Buzz", dime(10));
	}

	@Test
	public void recibe_15_devuelve_FizzBuzz() throws Exception {
		assertEquals("FizzBuzz", dime(15));
	}

	@Test
	public void recibe35devuleveFizzBuzz() throws Exception {
		assertEquals("FizzBuzz", dime(35));
	}

	@Test
	public void learningMaps() throws Exception {
		HashMap<Integer, String> numeros = new HashMap<Integer, String>();
		numeros.put(3, "Fizz");
		numeros.put(5, "Buzz");

		assertTrue(3 == numeros.keySet().iterator().next());
	}

	@Test
	public void recibe13devuelveFizz() throws Exception {
		assertEquals("Fizz", dime(13));
	}

	@Test
	public void recibe53devuelveFizz() throws Exception {
		assertEquals("FizzBuzz", dime(53));
	}

	@Test
	public void recibe60devuelveFizzBuzz() throws Exception {
		assertEquals("FizzBuzz", dime(60));
	}

	@Test
	public void recibe51devuelveFizzBuzz() throws Exception {
		assertEquals("FizzBuzz", dime(51));
	}

	private String dime(Integer number) {
		HashMap<Integer, String> numeros = new HashMap<Integer, String>();
		numeros.put(3, "Fizz");
		numeros.put(5, "Buzz");

		String retorno = "";
		for (Integer key : numeros.keySet()) {
			if (number % key == 0 || String.valueOf(number).contains(key.toString())) {
				retorno += numeros.get(key);
			}
		}
		if (retorno.isEmpty()) {
			retorno = number.toString();
		}

		return retorno;
	}
}