자동차 경주 - 5단계

src/main/java/racingcar/RaceController.java

@@ -1,5 +1,7 @@
 package racingcar;
 
+import racingcar.view.InputView;
+
 public class RaceController {
 
 	public void runRace() {

src/main/java/racingcar/RaceService.java

@@ -1,20 +1,33 @@
 package racingcar;
 
+import java.util.List;
+import java.util.stream.Stream;
+
+import racingcar.domain.Cars;
+import racingcar.domain.MovingStrategy;
+import racingcar.domain.Race;
+import racingcar.domain.RaceResult;
+import racingcar.domain.RandomMovingStrategy;
+import racingcar.view.OutputView;
+
 public class RaceService {
 	private final Race race;
 	private final Cars cars;
 
 	public RaceService(String carInput, int roundInput) {
+		List<String> names = Stream.of(carInput.split(","))
+			.map(String::trim)
+			.toList();
 		this.race = new Race(roundInput);
-		this.cars = new Cars(carInput);
+		this.cars = new Cars(names);
 	}
 
 	public void runRace() {
 		OutputView.printResultMessage();
 		while (race.hasRemainRound()) {
 			runOneRound();
 		}
-		OutputView.printWinner(cars.determineWinner());
+		OutputView.printWinner(RaceResult.determineWinner(cars.getCarsNameAndLocation()));
 	}
 
 	private void runOneRound() {

src/main/java/racingcar/Car.java → src/main/java/racingcar/domain/Car.java

@@ -1,6 +1,7 @@
-package racingcar;
+package racingcar.domain;
 
 public class Car {
+	private static final int MAX_CAR_NAME_LENGTH = 5;
 	private final String name;
 	private int location;
 
@@ -14,7 +15,7 @@ private void validateName(String name) {
 		if (name == null || name.isBlank()) {
 			throw new RuntimeException("자동차 이름은 공백일 수 없습니다.");
 		}
-		if (name.length() > 5) {
+		if (name.length() > MAX_CAR_NAME_LENGTH) {
 			throw new RuntimeException("자동차 이름은 1자 이상 5자 이하만 가능합니다.");
 		}
 	}
@@ -25,10 +26,6 @@ public void go(MovingStrategy movingStrategy) {
 		}
 	}
 
-	public boolean isSameLocation(int compareLocation) {
-		return compareLocation == location;
-	}
-
 	public int getLocation() {
 		return location;
 	}

src/main/java/racingcar/CarInfo.java → src/main/java/racingcar/domain/CarInfo.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.domain;
 
 public record CarInfo(
 	String name,
@@ -10,4 +10,8 @@ public record CarInfo(
 			car.getLocation()
 		);
 	}
+
+	public boolean isSameLocation(int compareLocation) {
+		return compareLocation == location;
+	}
 }

src/main/java/racingcar/domain/Cars.java

@@ -0,0 +1,39 @@
+package racingcar.domain;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public class Cars {
+	private final List<Car> cars;
+
+	public Cars(List<String> names) {
+		validateDuplicateName(names);
+		List<Car> tempCars = new ArrayList<>();
+		for (String name : names) {
+			tempCars.add(new Car(name));
+		}
+		this.cars = tempCars;
+	}
+
+	private void validateDuplicateName(List<String> names) {
+		Set<String> uniqueNames = new HashSet<>(names);
+		if (uniqueNames.size() != names.size()) {
+			throw new RuntimeException("중복된 자동차 이름이 존재합니다.");
+		}
+	}
+
+	public void moveCars(MovingStrategy movingStrategy) {
+		for (Car car : cars) {
+			car.go(movingStrategy);
+		}
+	}
+
+	public List<CarInfo> getCarsNameAndLocation() {
+		return cars.stream()
+			.map(CarInfo::new)
+			.toList();
+	}
+
+}

src/main/java/racingcar/MovingStrategy.java → src/main/java/racingcar/domain/MovingStrategy.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.domain;
 
 public interface MovingStrategy {
 	boolean canGo();

src/main/java/racingcar/Race.java → src/main/java/racingcar/domain/Race.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.domain;
 
 public class Race {
 	private int remainingRounds;

src/main/java/racingcar/domain/RaceResult.java

@@ -0,0 +1,24 @@
+package racingcar.domain;
+
+import java.util.List;
+
+public class RaceResult {
+	private RaceResult() {
+		throw new UnsupportedOperationException("유틸 클래스의 인스턴스를 생성할 수 없습니다.");
+	}
+
+	public static int findMaxLocation(List<CarInfo> cars) {
+		return cars.stream()
+			.mapToInt(CarInfo::location)
+			.max()
+			.orElseThrow(() -> new RuntimeException("자동차가 존재하지 않습니다."));
+	}
+
+	public static List<String> determineWinner(List<CarInfo> cars) {
+		int maxLocation = findMaxLocation(cars);
+		return cars.stream()
+			.filter(car -> car.isSameLocation(maxLocation))
+			.map(CarInfo::name)
+			.toList();
+	}
+}

src/main/java/racingcar/RandomMovingStrategy.java → src/main/java/racingcar/domain/RandomMovingStrategy.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.domain;
 
 public class RandomMovingStrategy implements MovingStrategy {
 	private static final int MIN_MOVE_VALUE = 4;

src/main/java/racingcar/RandomNumberGenerator.java → src/main/java/racingcar/domain/RandomNumberGenerator.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.domain;
 
 import java.util.Random;
 

src/main/java/racingcar/InputView.java → src/main/java/racingcar/view/InputView.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.view;
 
 import java.util.InputMismatchException;
 import java.util.NoSuchElementException;

src/main/java/racingcar/OutputView.java → src/main/java/racingcar/view/OutputView.java

@@ -1,4 +1,4 @@
-package racingcar;
+package racingcar.view;
 
 import java.util.List;
 

src/test/java/racingcar/CarInfoTest.java

@@ -0,0 +1,39 @@
+package racingcar;
+
+import static org.assertj.core.api.Assertions.*;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import racingcar.domain.CarInfo;
+
+class CarInfoTest {
+	@Test
+	@DisplayName("거리가 동일하면 true를 반환한다.")
+	void isSameLocationTest_sameLocation() {
+		// given
+		int location = 4;
+		CarInfo carInfo = new CarInfo("pobi", location);
+
+		// when
+		boolean result = carInfo.isSameLocation(location);
+
+		// then
+		assertThat(result).isTrue();
+	}
+
+	@Test
+	@DisplayName("거리가 동일하지 않으면 false를 반환한다.")
+	void isSameLocationTest_differentLocation() {
+		// given
+		int location = 4;
+		CarInfo carInfo = new CarInfo("pobi", location);
+
+		// when
+		boolean result = carInfo.isSameLocation(location + 1);
+
+		// then
+		assertThat(result).isFalse();
+	}
+
+}

src/test/java/racingcar/CarTest.java

@@ -5,9 +5,10 @@
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.CsvSource;
 import org.junit.jupiter.params.provider.ValueSource;
 
+import racingcar.domain.Car;
+
 class CarTest {
 
 	@ParameterizedTest(name = "invalidName : {0}")
@@ -67,22 +68,4 @@ void goTest_stop() {
 		assertThat(car.getLocation()).isEqualTo(0);
 	}
 
-	@ParameterizedTest(name = "거리: {0}, 기대값: {1}")
-	@CsvSource({
-		"0, true",
-		"1, false"
-	})
-	@DisplayName("거리가 동일하면 true를 반환하고, 그렇지 않으면 false를 반환한다.")
-	void isSameLocationTest(int location, boolean expected) {
-		// given
-		Car car = new Car("tdd");
-
-		// when
-		boolean result = car.isSameLocation(location);
-
-		// then
-		assertThat(result).isEqualTo(expected);
-
-	}
-
 }