Jokenpo: From DojoPuzzles

Jokenpo.java

/**
 * @Author: Hercules Lemke Merscher
 * Jokenpo
 * http://dojopuzzles.com/problemas/exibe/jokenpo/
 */

enum Play {
	ROCK, SCISSORS, PAPER
}
enum Result {
	PLAYER1, PLAYER2, DRAW
}

public class Jokenpo {

	public Result jokenpo(Play playA, Play playB){
		if(playA == playB)
			return Result.DRAW;
		
		switch(playA){
			case ROCK:
				if(playB == Play.PAPER) return Result.PLAYER2;
				break;
			case SCISSORS:
				if(playB == Play.ROCK) return Result.PLAYER2;
				break;
			case PAPER:
				if(playB == Play.SCISSORS) return Result.PLAYER2;
				break;
		}
		
		return Result.PLAYER1;
	}
}

JokenpoTest.java

/**
 * @Author: Hercules Lemke Merscher
 * JokenpoTest
 * http://dojopuzzles.com/problemas/exibe/jokenpo/
 */

import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.Test;

public class JokenpoTest {
	Jokenpo jokenpo;
	Play play;
	Result result;
	
	@Before
	public void setup(){
		jokenpo= new Jokenpo();
	}
	
	@Test
	public void jokenpoWinRock(){
		assertEquals(Result.PLAYER1, jokenpo.jokenpo(Play.ROCK, Play.SCISSORS));
	}
	
	@Test 
	public void jokenpoWinScissors(){
		assertEquals(Result.PLAYER1, jokenpo.jokenpo(Play.SCISSORS, Play.PAPER));
	}
	
	@Test
	public void jokenpoWinPaper(){
		assertEquals(Result.PLAYER1, jokenpo.jokenpo(Play.PAPER, Play.ROCK));		
	}
	
	@Test
	public void jokenpoLostPaper(){
		assertEquals(Result.PLAYER2, jokenpo.jokenpo(Play.PAPER, Play.SCISSORS));
	}

	@Test
	public void jokenpoLostScissors(){
		assertEquals(Result.PLAYER2, jokenpo.jokenpo(Play.SCISSORS, Play.ROCK));
	}

	@Test
	public void jokenpoLostRock(){
		assertEquals(Result.PLAYER2, jokenpo.jokenpo(Play.ROCK, Play.PAPER));
	}

	@Test
	public void jokenpoDrawPaper(){
		assertEquals(Result.DRAW, jokenpo.jokenpo(Play.PAPER, Play.PAPER));
	}
	
	@Test
	public void jokenpoDrawRock(){
		assertEquals(Result.DRAW, jokenpo.jokenpo(Play.ROCK, Play.ROCK));
	}

	@Test
	public void jokenpoDrawScissors(){
		assertEquals(Result.DRAW, jokenpo.jokenpo(Play.SCISSORS, Play.SCISSORS));
	}
}