[충남대 BE_송민주] 미션 제출합니다

README.md

@@ -1 +1,18 @@
-# java-baseball-precourse
+# java-baseball-precourse
+
+## 구현할 기능 목록
+
+### utils
+- 숫자 야구 기능 (1~9 수로 이뤄진 3자리 숫자 야구 생성)
+
+### Service
+- 게임 결과 판단
+- 게임 승리 여부 판단
+
+### Controller
+- 게임 결과 출력
+
+### IO(Input and Output)
+- 숫자 입력 : 정상적인 숫자 검증 (숫자 이외에는 다 예외처리 )
+  - 숫자가 아닐경우 예외 발생
+- 게임 시작 / 종료/ 결과 메세지 출력

src/main/java/Application.java

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+import Controller.GameController;
+public class Application {
+    public static void main(String[] args) {
+        GameController gameController = new GameController();
+        gameController.run();
+    }
+}

src/main/java/Controller/GameController.java

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+package Controller;
+
+import IO.*;
+import utils.*;
+
+public class GameController {
+    public void run(){
+        while(true){
+            firstGameStart();
+            if (!wantGame()){
+                break;
+            }
+        }
+    }
+
+    private void firstGameStart(){
+        // random 숫자 생성
+        int[] gameNumber = makeRandomNumber.getRandomNumbers();
+        int[] userNumber;
+        while(true){
+            try {
+                userNumber = Input.inputGameNumber();
+            } catch (IllegalArgumentException e) {
+                System.out.println(e.getMessage());
+                return;
+            }
+
+            int strikeCount = resultCalculation.countStrikes(gameNumber, userNumber);
+            int ballCount = resultCalculation.countBall(gameNumber, userNumber);
+            Output.printGameResult(strikeCount, ballCount);
+
+            if (strikeCount == 3) {
+                System.out.println("정답 입니다! 게임 종료");
+                break;
+            }
+        }
+    }
+
+    private boolean wantGame() {
+        int want = Input.inputStartGame();
+
+        return want == 1;
+    }
+}

src/main/java/IO/Input.java

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+package IO;
+
+import java.util.*;
+
+public class Input {
+    //    유저에게서 정보를 입력 받는 역할
+    private static Scanner sc = new Scanner(System.in);
+
+    public static int inputStartGame() {
+        int input;
+        while(true){
+            System.out.println("게임 시작은 1, 게임 종료는 2: ");
+            input = Integer.parseInt(sc.nextLine());
+            if (input != 1  && input != 2){
+                // 유효한 값 이외에 다른 게 들어오면
+                throw new IllegalArgumentException("잘못된 입력 방식입니다.");
+            }
+            return input;
+        }
+
+    }
+
+    public static int[] inputGameNumber() {
+        System.out.print("숫자를 입력해 주세요 : ");
+        String input = sc.nextLine();
+
+        if (!input.matches("[0-9]{3}")) {
+            // 1-9 숫자 3개가 들어오지 않았다면 -> IllegalArgumentException  발생
+            throw new IllegalArgumentException("잘못된 입력 방식입니다.");
+        }
+        int[] numbers = new int[3];
+        for (int i = 0; i < 3; i++) {
+            char digitChar = input.charAt(i);
+            int digit = Character.getNumericValue(digitChar);
+            numbers[i] = digit;
+        }
+
+        return numbers;
+    }
+
+}

src/main/java/IO/Output.java

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+package IO;
+
+public class Output {
+    public static void printGameResult(int strike, int ball) {
+        if (strike == 0 && ball == 0) {
+            System.out.println("낫싱");
+        } else {
+            if (strike > 0) {
+                System.out.print(strike + "스트라이크");
+                if (ball > 0) {
+                    System.out.print(" ");
+                }
+            }
+            if (ball > 0) {
+                System.out.print(ball + "볼");
+            }
+            System.out.println();
+        }
+    }
+}

src/main/java/utils/makeRandomNumber.java

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+package utils;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+
+public class makeRandomNumber {
+    public static int[] getRandomNumbers() {
+        List<Integer> numberList = new ArrayList<>();
+        for (int i = 1; i <= 9; i++) {
+            numberList.add(i);
+        }
+
+        Collections.shuffle(numberList);
+
+        int[] result = new int[3];
+        for (int i = 0; i < 3; i++) {
+            result[i] = numberList.get(i);
+        }
+
+        return result;
+    }
+}

src/main/java/utils/resultCalculation.java

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+package utils;
+
+public class resultCalculation {
+    public static int countStrikes(int[] gameNumber, int[] userNumber) {
+        int strikeCount = 0;
+        for (int i = 0; i < 3; i++) {
+            if (gameNumber[i] == userNumber[i]) {
+                strikeCount++;
+            }
+        }
+
+        return strikeCount;
+    }
+
+    public static int countBall(int[] gameNumber, int[] userNumber) {
+        int ballCount = 0;
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 3; j++) {
+                if (gameNumber[i] == userNumber[j] && i != j) {
+                    ballCount++;
+                }
+            }
+        }
+
+        return ballCount;
+    }
+
+}

src/test/java/IO/InputTest.java

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+package IO;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class InputTest {
+    private InputStream systemIn;
+
+    @BeforeEach
+    void setUp() {
+        systemIn = System.in;
+    }
+
+    @AfterEach
+    void tearDown() {
+        System.setIn(systemIn);
+    }
+
+    @Test
+    void inputStartGame() {
+        String input = "2\n";
+        InputStream in = new ByteArrayInputStream(input.getBytes());
+        System.setIn(in);
+
+        int choice = Input.inputStartGame();
+
+        assertEquals(2, choice);
+    }
+
+    @Test
+    void inputGameNumber() {
+        String input = "456\n";
+        InputStream in = new ByteArrayInputStream(input.getBytes());
+        System.setIn(in);
+
+        int[] guess = Input.inputGameNumber();
+
+        assertArrayEquals(new int[]{4, 5, 6}, guess);
+    }
+}

src/test/java/IO/OutputTest.java

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+package IO;
+
+import org.junit.jupiter.api.AfterEach;
+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.InputStream;
+import java.io.PrintStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class OutputTest {
+    private InputStream systemIn;
+
+    @BeforeEach
+    void setUp() {
+        systemIn = System.in;
+    }
+
+    @AfterEach
+    void tearDown() {
+        System.setIn(systemIn);
+    }
+
+    @Test
+    @DisplayName("낫싱")
+    void printGameResult() {
+        ByteArrayOutputStream output = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(output));
+
+        Output.printGameResult(0, 0);
+
+        assertEquals("낫싱\n", output.toString());
+    }
+
+}

src/test/java/utils/makeRandomNumberTest.java

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+package utils;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class makeRandomNumberTest {
+    private InputStream systemIn;
+
+    @BeforeEach
+    void setUp() {
+        systemIn = System.in;
+    }
+
+    @AfterEach
+    void tearDown() {
+        System.setIn(systemIn);
+    }
+
+    @Test
+    @DisplayName(" 랜덤 숫자 생성 ")
+    void getRandomNumbers() {
+        int[] numbers = makeRandomNumber.getRandomNumbers();
+        assertNotNull(numbers);
+        assertEquals(3, numbers.length);
+        for (int number : numbers) {
+            assertTrue(number >= 1 && number <= 9);
+        }
+
+        for (int i = 0; i < numbers.length - 1; i++) {
+            for (int j = i + 1; j < numbers.length; j++) {
+                assertNotEquals(numbers[i], numbers[j]);
+            }
+        }
+
+    }
+
+}

src/test/java/utils/resultCalculationTest.java

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+package utils;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class resultCalculationTest {
+    private InputStream systemIn;
+
+    @BeforeEach
+    void setUp() {
+        systemIn = System.in;
+    }
+
+    @AfterEach
+    void tearDown() {
+        System.setIn(systemIn);
+    }
+
+    @Test
+    @DisplayName("스트라이크가 1개 이상")
+    void countStrikes() {
+        int[] game = {1, 2, 3};
+        int[] user = {1, 5, 3};
+        int result = resultCalculation.countStrikes(game, user);
+        assertEquals(2, result);
+    }
+
+
+    @Test
+    @DisplayName("볼이 2개 이상")
+    void countBall() {
+        int[] game = {1, 2, 3};
+        int[] user = {3, 5, 1};
+        int result = resultCalculation.countBall(game, user);
+        assertEquals(2, result);
+    }
+}