[자동차 경주] 박대경 미션 제출합니다.

README.md

@@ -1 +1,12 @@
 # java-racingcar-precourse
+
+---
+
+## 구현 기능 목록
+
+- [x] 자동차 이름 입력
+- [x] 시도할 횟수 입력
+- [x] 자동차 이름 쉼표 구분
+- [x] 입력이 유효하지 않을 경우 오류 발생
+- [x] 자동차 전진 내용 출력
+- [ ] 우승자 안내 문구 출력

src/main/java/racingcar/Application.java

@@ -1,7 +1,9 @@
 package racingcar;
 
+import racingcar.controller.RacingController;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        RacingController.run();
     }
 }

src/main/java/racingcar/controller/RacingController.java

@@ -0,0 +1,23 @@
+package racingcar.controller;
+
+import racingcar.domain.Cars;
+import racingcar.view.RacingView;
+
+public class RacingController {
+    public static void run() {
+        String carNames = RacingView.getCarsInput();
+        int tryingCount = RacingView.getTryingCountInput();
+
+        Cars cars = new Cars(carNames);
+        System.out.println("실행 결과");
+        runRacing(cars, tryingCount);
+    }
+
+    private static void runRacing(Cars cars, int tryingCount) {
+        for (int i = 0; i < tryingCount; i++) {
+            cars.race();
+            RacingView.printResults(cars.getRacingResults());
+        }
+        RacingView.printWinners(cars.getWinners());
+    }
+}

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

@@ -0,0 +1,40 @@
+package racingcar.domain;
+
+public class Car {
+    private static final int MAX_NAME_LENGTH = 5;
+    private static final int MOVE_THRESHOLD = 4;
+
+    private final String name;
+    private int moveCount = 0;
+
+    public Car(String name) {
+        this.name = name;
+        validateName(name);
+    }
+
+    public int getMoveCount() {
+        return moveCount;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void increaseMoveCount(int randomNum) {
+        if (randomNum >= MOVE_THRESHOLD) {
+            moveCount++;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return name + " : " + "-".repeat(moveCount);
+    }
+
+    public static void validateName(String name) {
+        if (name.length() > MAX_NAME_LENGTH) {
+            throw new IllegalArgumentException("이름은 5자를 초과할 수 없습니다.");
+        }
+    }
+
+}

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

@@ -0,0 +1,47 @@
+package racingcar.domain;
+
+import java.util.Arrays;
+import java.util.List;
+import racingcar.utils.RandomGenerator;
+
+import java.util.stream.Collectors;
+
+public class Cars {
+    private final List<Car> cars;
+    private final RandomGenerator randomGenerator = new RandomGenerator();
+
+    public Cars(String rawNames) {
+        validateNames(rawNames);
+        cars = Arrays.stream(rawNames.split(","))
+                .map(Car::new)
+                .toList();
+    }
+
+    public static void validateNames(String rawNames) {
+        if (rawNames == null || rawNames.trim().isEmpty()) {
+            throw new IllegalArgumentException("자동차 이름 목록이 비어있습니다.");
+        }
+    }
+
+    public void race() {
+        cars.forEach(car -> car.increaseMoveCount(randomGenerator.generateRandomNumber(0, 9)));
+    }
+
+    public String getRacingResults() {
+        return cars.stream()
+                .map(Car::toString)
+                .collect(Collectors.joining("\n"));
+    }
+
+    public String getWinners() {
+        int maxMovedCount = cars.stream()
+                .map(Car::getMoveCount)
+                .max(Integer::compareTo)
+                .orElse(0);
+
+        return cars.stream()
+                .filter(car -> car.getMoveCount() == maxMovedCount)
+                .map(Car::getName)
+                .collect(Collectors.joining(","));
+    }
+}

src/main/java/racingcar/utils/RandomGenerator.java

@@ -0,0 +1,9 @@
+package racingcar.utils;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+public class RandomGenerator {
+    public int generateRandomNumber(int min, int max) {
+        return Randoms.pickNumberInRange(min, max);
+    }
+}

src/main/java/racingcar/view/RacingView.java

@@ -0,0 +1,23 @@
+package racingcar.view;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public class RacingView {
+    public static String getCarsInput() {
+        System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
+        return Console.readLine();
+    }
+
+    public static int getTryingCountInput() {
+        System.out.println("시도할 횟수는 몇 회인가요?");
+        return Integer.parseInt(Console.readLine());
+    }
+
+    public static void printResults(String result) {
+        System.out.println(result + "\n");
+    }
+
+    public static void printWinners(String winners) {
+        System.out.println("최종 우승자 : " + winners);
+    }
+}

src/test/java/racingcar/CarNamesTest.java

@@ -0,0 +1,36 @@
+package racingcar;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import racingcar.domain.Car;
+import racingcar.domain.Cars;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class CarNamesTest {
+    @Test
+    void 입력값_null_검증() {
+        assertThatThrownBy(() -> Cars.validateNames(null))
+                .isInstanceOf(IllegalArgumentException.class);
+    }
+
+    @Test
+    void 입력값_빈_문자열_검증() {
+        assertThatThrownBy(() -> Cars.validateNames("  "))
+                .isInstanceOf(IllegalArgumentException.class);
+    }
+
+    @Test
+    void 입력값_파싱_테스트() {
+        Assertions.assertDoesNotThrow(() -> Cars.validateNames("pobi,woni,jun"));
+    }
+
+    @Test
+    void 이름_길이_테스트() {
+        Assertions.assertThrows(
+                IllegalArgumentException.class, () -> new Car("abcdef")
+        );
+    }
+
+}