Kumite

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.Arrays;
import java.util.Random;
import java.util.regex.Pattern;

import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;


public class ExtendedTest {
	String[] season1 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
	String[] season2 = {"1-2","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
	String[] season3 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0"};
	String[] season4 = {"2-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","1-1"};
	String[] season5 = {"1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1"};
	String[] season6 = {"1-1","1-1","1-1","1-1",null,"1-1","1-1","1-1","1-1","1-1"};
	String[] season7 = {"1-1","1-1","1-1","1-1","a-7","1-1","1-1","1-1","1-1","1-1"};
	String[] season8 = {"1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","-1-1","2-1"};
	String[] season9 = {};
	
	
	
	
	@Tag("sampleTest")
	@Test
	void basicTest() {
		assertEquals(13, Ranking.getPoints(season1,true),"Season 1 home");
		assertEquals(13, Ranking.getPoints(season1,false),"Season 1 away");
		assertEquals(12, Ranking.getPoints(season2,true),"Season 2 home");
		assertEquals(15, Ranking.getPoints(season2,false),"Season 2 away");
		assertEquals(-1, Ranking.getPoints(season3,false),"Season 3 away");
		assertEquals(13, Ranking.getPoints(season4,true),"Season 4 home");
		assertEquals(13, Ranking.getPoints(season4,false),"Season 4 away");
		assertEquals(10, Ranking.getPoints(season5,false),"Season 5 away");
		assertEquals(-1, Ranking.getPoints(null,false),"Null param");
		assertEquals(-1, Ranking.getPoints(season6,false),"Invalid param test");
		assertEquals(-1, Ranking.getPoints(season7,false),"Wrong format test");
		assertEquals(-1, Ranking.getPoints(season8,false),"Wrong format test");
		assertEquals(-1, Ranking.getPoints(season9,false),"Wrong format test");
	}
	
	@RepeatedTest(50)
	void randomTest() {
		String[] param = generateParams();
		boolean homeOrNot = getRandomBoolean();
		assertEquals(getPoints(param, homeOrNot), Ranking.getPoints(param,homeOrNot));
	}
	
	private static String[] generateParams() {
		Random ran = new Random();
		String[] exit = new String[ran.nextInt(9, 12)];
		for(int i = 0;i < exit.length;i++) {
			exit[i] = generateMatch();
		}
		
		return exit;
	}
	
	private static String generateMatch() {
		Random ran = new Random();
		int goalsLeft = ran.nextInt(0, 5);
		int goalsRigth = ran.nextInt(0, 5);
		
		if(ran.nextInt(0, 100) == 37) {
			if(ran.nextBoolean()) {
				return null;
			}else {
				return "a-" + goalsRigth;
			}
		}
		
		return goalsLeft + "-" + goalsRigth;
	}
	
	private static boolean getRandomBoolean() {
		Random ran = new Random();
		return ran.nextBoolean();
	}
	
	private static int getPoints(String[] matches, boolean isHomeMatch) {
		if (matches == null)
			return -1;
		int points = 0;
		if (matches.length != 10) {
			return -1;
		}

		for (int i = 0; i < matches.length; i++) {
			if (matches[i] == null) {
				return -1;
			}

			if (!Pattern.matches("^[0-9]+[-]{1}[0-9]+$", matches[i])) {
				return -1;
			}

			String[] actualMatch = matches[i].split("-");
			if (!isHomeMatch) {
				String aux = actualMatch[0];
				actualMatch[0] = actualMatch[1];
				actualMatch[1] = aux;
			}

			if (Integer.parseInt(actualMatch[0]) > Integer.parseInt(actualMatch[1])) {
				points += 3;
			} else if (Integer.parseInt(actualMatch[0]) == Integer.parseInt(actualMatch[1])) {
				points += 1;
			}
			isHomeMatch = !isHomeMatch;
		}
		return points;
	}
}