Step4 리뷰 요청드립니다.

RACINGCAR_TODO.md

@@ -1,2 +1,5 @@
 - [X] 생선된 자동차 수는 1보다 크다.
 - [X] 전진하는 조건은 0에서 9 사이에서 random 값을 구한 후 random 값이 4이상일 경우이다.
+- [X] 자동차 이름은 5자를 초과할 수 없다.
+- [X] 우승자는 한명 이상일 수 있다.
+

src/main/java/Car.java

@@ -5,11 +5,23 @@
 public abstract class Car {
     protected String status = "";
 
+    protected String name = "";
+
+
     public abstract void drive(int num, String delimiter);
 
     public abstract int getNumber();
 
     public String getStatus() {
         return this.status;
     }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public Car(String name) {
+        this.name = name;
+    }
+
 }

src/main/java/FormattingUtil.java

@@ -0,0 +1,25 @@
+import java.util.List;
+
+/**
+ * @author jeongheekim
+ * @date 3/27/24
+ */
+public class FormattingUtil {
+    private FormattingUtil() {}
+
+    public static String formattingResult(List<String> list) {
+        StringBuilder sb = new StringBuilder();
+        int size = list.size();
+        for (int i = 0; i < size; i++) {
+            sb.append(list.get(i));
+            addComma(i, size, sb);
+        }
+        return sb.toString();
+    }
+
+    private static void addComma(int i, int size, StringBuilder sb) {
+        if (i < size - 1) {
+            sb.append(",");
+        }
+    }
+}

src/main/java/Game.java

@@ -8,51 +8,65 @@
 public class Game {
 
     public static final String DELIMETER = "-";
+
+    public static final String CAR_NAME_DELIMETER = ",";
+
     private int gameCount;
+
     private Car[] cars;
 
     public void start() {
-        cars =  createCar();
+
+        cars = createCar();
+
         gameCount = getGameCount();
         System.out.println("실행 결과");
         for (int i = 0; i < gameCount; i++) {
             job();
         }
 
+        Winner winner = new Winner();
+        System.out.println(FormattingUtil.formattingResult(winner.getWinners(cars)) + "가 최종 우승했습니다.");
+
     }
 
     private void job() {
         for (Car car : this.cars) {
             car.drive(car.getNumber(), DELIMETER);
-            System.out.println(car.getStatus());
+            System.out.println(car.getName() + ":" + car.getStatus());
         }
         System.out.println("                           ");
     }
 
     private int getGameCount() {
         Scanner scanner = new Scanner(System.in);
         System.out.println("시도할 회수는 몇 회 인가요?");
+
         int gameCount = scanner.nextInt();
-        System.out.println("gameCount = " + gameCount);
+        System.out.println(gameCount);
+
         return gameCount;
     }
 
 
     private Car[] createCar() {
-        int carCount = getCarCount();
-        Car[] cars = new Car[carCount];
-        for (int i = 0; i < carCount; i++) {
-            cars[i] = new SmallCar();
+        String[] carNameInputArr = getCarNameInputArr();
+        int length = carNameInputArr.length;
+        Car[] cars = new Car[length];
+        for (int i = 0; i < length; i++) {
+            cars[i] = new SmallCar(carNameInputArr[i]);
+
         }
         return cars;
     }
 
-    private int getCarCount() {
-        System.out.println("자동차 대수는 몇 대 인가요?");
+
+    private String[] getCarNameInputArr() {
+        System.out.println("경주할 자동차 이름을 입력하세요(이름은 " + CAR_NAME_DELIMETER + "를 기준으로 구분).");
         Scanner scanner = new Scanner(System.in);
-        int carCount = Integer.parseInt(scanner.nextLine());
-        System.out.println("자동차 대수 = " + carCount);
-        return carCount;
+        String carNameInput = scanner.nextLine();
+        System.out.println(carNameInput);
+        return carNameInput.split(CAR_NAME_DELIMETER);
     }
 
     public Car[] getCars() {

src/main/java/SmallCar.java

@@ -3,7 +3,10 @@
  * @date 3/12/24
  */
 public class SmallCar extends Car {
-    private String status = "";
+
+    public SmallCar(String name) {
+        super(name);
+    }
 
     @Override
     public void drive(int num, String delimeter) {
@@ -18,6 +21,5 @@ public int getNumber() {
         return (int) (Math.random() * 10);
     }
 
-
 }
 

src/main/java/Winner.java

@@ -0,0 +1,47 @@
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author jeongheekim
+ * @date 3/26/24
+ */
+public class Winner {
+    private List<String> winners = new ArrayList<>();
+    private int maxLength;
+
+    public void addWinner(String name) {
+        this.winners.add(name);
+    }
+
+    public void updateMaxLength(int length) {
+        this.maxLength = length;
+    }
+
+    public List<String> getWinners(Car[] cars) {
+        this.filterMaxLength(cars);
+        for (Car car : cars) {
+            this.checkWinnerCondition(car);
+        }
+        return this.winners;
+    }
+
+    private void filterMaxLength (Car[] cars) {
+        for (Car car : cars) {
+            int carStatusLength = car.getStatus().length();
+            this.compareMaxLength(carStatusLength);
+        }
+    }
+
+    private void compareMaxLength(int carStatusLength) {
+        if (this.maxLength <= carStatusLength) {
+            this.updateMaxLength(carStatusLength);
+        }
+    }
+
+    private void checkWinnerCondition(Car car) {
+        int statusLength = car.getStatus().length();
+        if (this.maxLength <= statusLength) {
+            this.addWinner(car.getName());
+        }
+    }
+}

src/test/java/SmallCarTest.java

@@ -1,7 +1,9 @@
 import org.junit.jupiter.api.DisplayName;
+
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
-
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
@@ -14,7 +16,7 @@ class SmallCarTest {
     @ValueSource(ints = {4,5,6})
     @DisplayName("random 값이 4이상일 경우 앞으로 전진한다.")
     void whenRandom4goDriveTest(int randomNumber) {
-        SmallCar car = new SmallCar();
+        SmallCar car = new SmallCar("pobi");
         car.drive(randomNumber,"-");
         assertTrue(car.getStatus().length() > 0);
     }
@@ -23,8 +25,27 @@ void whenRandom4goDriveTest(int randomNumber) {
     @ValueSource(ints = {1,2,3})
     @DisplayName("random 값이 4미만일 경우 전진하지 않는다.")
     void whenRandom4NotDriveTest(int randomNumber) {
-        SmallCar car = new SmallCar();
+        SmallCar car = new SmallCar("pobi");
         car.drive(randomNumber,"-");
         assertTrue(car.getStatus().length() == 0);
     }
+
+    @ParameterizedTest
+    @ValueSource(ints = {5})
+    @DisplayName("자동차 이름은 5자를 초과할 수 없다.")
+    void carNameNotOverLength(int length) {
+        SmallCar car = new SmallCar("pobi");
+        String name = car.getName();
+        assertTrue(name.length() <= length);
+    }
+
+    @ParameterizedTest
+    @ValueSource(ints = {5})
+    @DisplayName("자동차 이름은 5자를 초과할 수 없다.")
+    void carNameNotOverLength2(int length) {
+        SmallCar car = new SmallCar("pobipobi");
+        String name = car.getName();
+        assertFalse(name.length() <= length);
+    }
+
 }

src/test/java/WinnerTest.java

@@ -0,0 +1,29 @@
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author jeongheekim
+ * @date 3/27/24
+ */
+class WinnerTest {
+
+    @Test
+    @DisplayName("우승자는 한명 이상이다.")
+    void winnerLengthTest() {
+        SmallCar car = new SmallCar("pobi");
+        car.drive(7, "-");
+
+        Car[] cars = new Car[1];
+        cars[0] = car;
+
+        Winner winner = new Winner();
+        List<String> winners = winner.getWinners(cars);
+
+        assertTrue(winners.size() >= 1);
+    }
+
+}