GameTest.java

package racingcar;


import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

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


public class GameTest {
    @DisplayName("Car 객체 리스트 생성 테스트")
    @Test
    void addCars() {
        Game game = new Game();
        List<String> carNames = Arrays.asList("pobi", "woni", "crong");

        List<Car> result = game.addCars(carNames);

        assertEquals("pobi", result.get(0).getName());
        assertEquals("woni", result.get(1).getName());
        assertEquals("crong", result.get(2).getName());
    }
    @DisplayName("우승자 테스트")
    @Test
    void winnersTest(){
        Game game = new Game();

        List<Car> cars = new ArrayList<>();
        List<String> expected = new ArrayList<>();
        List<String> result = new ArrayList<>();

        cars.add(new Car("win1", 4));
        cars.add(new Car("win2", 4));
        cars.add(new Car("lose", 2));

        expected = List.of("win1", "win2");
        result = game.winners(cars);

        assertEquals(expected,result);

    }
    @DisplayName("우승자 출력 테스트")
    @Test
    void printWinners() {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        PrintStream printStream = new PrintStream(outputStream);
        System.setOut(printStream);

        Game game = new Game();

        List<String> winners = new ArrayList<>();

        winners = List.of("win1", "win2");

        game.printWinners(winners);

        assertEquals("최종 우승자 : win1, win2\n", outputStream.toString());
    }
}