diff --git a/README.md b/README.md
index fcf3f057..03b16445 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,19 @@
## 과제 제출 과정
* [과제 제출 방법](https://github.com/next-step/nextstep-docs/tree/master/ent-precourse)
+
+## 구현할 기능 목록
+
+- [x] 게임이 시작하면 컴퓨터는 서로 다른 3자리의 수를 랜덤 생성한다.
+ - 숫자의 범위는 1-9 이다.
+- [x] 유저가 서로 다른 3자리의 수를 입력한다.
+ - 입력 포맷 : "숫자를 입력해주세요 : %s"
+- [x] 결과를 계산한다.
+ - 스트라이크, 볼의 갯수를 계산하여 return 한다.
+- [x] 결과를 종합한다.
+ - 스트라이크, 볼의 갯수가 둘 다 0이 아닐 시 그대로 출력
+ - 스트라이크, 볼의 갯수가 둘 다 0일 경우 낫싱 출력
+ - 스트라이크가 3개일 경우 정답처리
+- [x] 정답 처리
+ - '1' 입력시에 게임 재실행
+ - '2' 입력시에 게임 종료
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index d6eb8110..d702a9e2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
group = 'camp.nextstep'
version = '1.0.0'
-sourceCompatibility = '11'
+sourceCompatibility = "16"
repositories {
mavenCentral()
@@ -18,3 +18,4 @@ dependencies {
tasks.named('test') {
useJUnitPlatform()
}
+targetCompatibility = JavaVersion.VERSION_16
diff --git a/commit-message-template b/commit-message-template
new file mode 100644
index 00000000..29e3eef9
--- /dev/null
+++ b/commit-message-template
@@ -0,0 +1,27 @@
+# <타입>: <제목>
+
+##### 제목은 최대 50 글자까지만 입력 ############## -> |
+
+
+# 본문은 위에 작성
+######## 본문은 한 줄에 최대 72 글자까지만 입력 ########################### -> |
+
+# 꼬릿말은 아래에 작성: ex) #이슈 번호
+
+# --- COMMIT END ---
+# <타입> 리스트
+# feat : 기능 (새로운 기능)
+# fix : 버그 (버그 수정)
+# refactor : 리팩토링
+# style : 스타일 (코드 형식, 세미콜론 추가: 비즈니스 로직에 변경 없음)
+# docs : 문서 (문서 추가, 수정, 삭제)
+# test : 테스트 (테스트 코드 추가, 수정, 삭제: 비즈니스 로직에 변경 없음)
+# chore : 기타 변경사항 (빌드 스크립트 수정 등)
+# ------------------
+# 제목 첫 글자를 대문자로
+# 제목은 명령문으로
+# 제목 끝에 마침표(.) 금지
+# 제목과 본문을 한 줄 띄워 분리하기
+# 본문은 "어떻게" 보다 "무엇을", "왜"를 설명한다.
+# 본문에 여러줄의 메시지를 작성할 땐 "-"로 구분
+# ------------------
diff --git a/java-google-style.xml b/java-google-style.xml
new file mode 100644
index 00000000..45bf14cc
--- /dev/null
+++ b/java-google-style.xml
@@ -0,0 +1,598 @@
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+ xmlns:android
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+ ^$
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+ xmlns:.*
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+ ^$
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+ BY_NAME
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+ .*:id
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+ http://schemas.android.com/apk/res/android
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+ ^$
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+ ^$
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+ BY_NAME
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+
+ http://schemas.android.com/apk/res/android
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+ http://schemas.android.com/apk/res/android
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+ http://schemas.android.com/apk/res/android
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+ .*:layout_marginRight
+
+ http://schemas.android.com/apk/res/android
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+ .*:layout_.*
+
+ http://schemas.android.com/apk/res/android
+
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+ BY_NAME
+
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+ .*:padding
+
+ http://schemas.android.com/apk/res/android
+
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+ .*:paddingTop
+
+ http://schemas.android.com/apk/res/android
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+ http://schemas.android.com/apk/res/android
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+ .*:paddingRight
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+ http://schemas.android.com/apk/res/android
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+ .*
+ http://schemas.android.com/apk/res/android
+
+
+ BY_NAME
+
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+
+
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+ .*
+ http://schemas.android.com/apk/res-auto
+
+
+ BY_NAME
+
+
+
+
+
+
+ .*
+ http://schemas.android.com/tools
+
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+ BY_NAME
+
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+ .*
+ .*
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+ BY_NAME
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\ No newline at end of file
diff --git a/src/main/java/baseball/Main.java b/src/main/java/baseball/Main.java
new file mode 100644
index 00000000..07c7e4d1
--- /dev/null
+++ b/src/main/java/baseball/Main.java
@@ -0,0 +1,16 @@
+package baseball;
+import baseball.controller.BaseballController;
+import baseball.domain.BaseballNumber;
+import baseball.service.BaseballService;
+import baseball.view.BaseballView;
+
+
+public class Main {
+ public static void main(String[] args) {
+ BaseballNumber baseballNumber = new BaseballNumber();
+ BaseballService baseballService = new BaseballService(baseballNumber);
+ BaseballController baseballController = new BaseballController(baseballService);
+ BaseballView baseballView = new BaseballView(baseballController);
+ baseballView.startGame();
+ }
+}
diff --git a/src/main/java/baseball/common/BaseballEnum.java b/src/main/java/baseball/common/BaseballEnum.java
new file mode 100644
index 00000000..3e13890f
--- /dev/null
+++ b/src/main/java/baseball/common/BaseballEnum.java
@@ -0,0 +1,8 @@
+package baseball.common;
+
+public class BaseballEnum {
+ public final static int CONTINUE_THE_GAME = 1;
+ public final static int FINISH_THE_GAME = 2;
+ public final static int BASEBALL_NUMBER_LENGTH = 3;
+
+}
diff --git a/src/main/java/baseball/controller/BaseballController.java b/src/main/java/baseball/controller/BaseballController.java
new file mode 100644
index 00000000..03dd33d1
--- /dev/null
+++ b/src/main/java/baseball/controller/BaseballController.java
@@ -0,0 +1,33 @@
+package baseball.controller;
+
+import baseball.dto.BaseballResultDto;
+import baseball.service.BaseballService;
+import java.util.List;
+
+public class BaseballController {
+
+ BaseballService baseballService;
+
+ public BaseballController(BaseballService baseballService) {
+ this.baseballService = baseballService;
+ }
+
+ public BaseballResultDto getBaseballResult(List userBaseballNumber) {
+ Integer strikeCount = baseballService.getStrikeCount(userBaseballNumber);
+ Integer ballCount = baseballService.getBallCount(userBaseballNumber);
+ return new BaseballResultDto(strikeCount, ballCount);
+ }
+
+ public boolean isPlaying() {
+ return baseballService.isPlaying();
+ }
+
+ public void startGame() {
+ baseballService.startGame();
+ }
+
+ public void finishGame() {
+ baseballService.finishGame();
+ }
+
+}
diff --git a/src/main/java/baseball/domain/BaseballNumber.java b/src/main/java/baseball/domain/BaseballNumber.java
new file mode 100644
index 00000000..22db8c6a
--- /dev/null
+++ b/src/main/java/baseball/domain/BaseballNumber.java
@@ -0,0 +1,34 @@
+package baseball.domain;
+
+import static baseball.common.BaseballEnum.BASEBALL_NUMBER_LENGTH;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class BaseballNumber {
+ private final List candidateNumbers = new ArrayList<>();
+ private List number = new ArrayList<>();
+
+ public BaseballNumber() {
+ for (int i = 1; i <= 9; i++) {
+ candidateNumbers.add(i);
+ }
+ }
+
+ public void generateBaseballNumber() {
+ number.clear();
+ Collections.shuffle(candidateNumbers);
+ for (int i = 0; i < BASEBALL_NUMBER_LENGTH; i++) {
+ number.add(candidateNumbers.get(i));
+ }
+ }
+
+ public List getNumber() {
+ return number;
+ }
+
+ public void setNumber(List number) {
+ this.number = number;
+ }
+}
diff --git a/src/main/java/baseball/dto/BaseballResultDto.java b/src/main/java/baseball/dto/BaseballResultDto.java
new file mode 100644
index 00000000..1ec99001
--- /dev/null
+++ b/src/main/java/baseball/dto/BaseballResultDto.java
@@ -0,0 +1,3 @@
+package baseball.dto;
+
+public record BaseballResultDto(Integer strikeCount, Integer ballCount){}
diff --git a/src/main/java/baseball/service/BaseballService.java b/src/main/java/baseball/service/BaseballService.java
new file mode 100644
index 00000000..b1079b6b
--- /dev/null
+++ b/src/main/java/baseball/service/BaseballService.java
@@ -0,0 +1,61 @@
+package baseball.service;
+
+import baseball.domain.BaseballNumber;
+import java.util.List;
+
+public class BaseballService {
+
+ private final int RUNNING = 1;
+ private final int READY = 0;
+ private final BaseballNumber baseballNumber;
+ private int status;
+
+ public BaseballService(BaseballNumber baseballNumber) {
+ this.baseballNumber = baseballNumber;
+ }
+
+ public int getBallCount(List userBaseballNumber) {
+ List computerBaseballNumber = baseballNumber.getNumber();
+ int ballCount = 0;
+
+ for (int i = 0; i < userBaseballNumber.size(); i++) {
+ for (int j = 0; j < computerBaseballNumber.size(); j++){
+ if (i != j & userBaseballNumber.get(i).equals(computerBaseballNumber.get(j))) {
+ ballCount++;
+ }
+ }
+ }
+
+ return ballCount;
+ }
+
+ public int getStrikeCount(List userBaseballNumber) {
+ List computerBaseballNumber = baseballNumber.getNumber();
+ int strikeCount = 0;
+
+ for (int i = 0; i < userBaseballNumber.size(); i++) {
+ if (userBaseballNumber.get(i).equals(computerBaseballNumber.get(i))) {
+ strikeCount++;
+ }
+ }
+
+ return strikeCount;
+ }
+
+ public boolean isPlaying() {
+ return status == RUNNING;
+ }
+
+ public void startGame(){
+ status = RUNNING;
+ baseballNumber.generateBaseballNumber();
+ }
+
+ public void finishGame(){
+ status = READY;
+ }
+
+ public void setBaseballNumber(List baseballNumber) {
+ this.baseballNumber.setNumber(baseballNumber);
+ }
+}
diff --git a/src/main/java/baseball/view/BaseballView.java b/src/main/java/baseball/view/BaseballView.java
new file mode 100644
index 00000000..f357360f
--- /dev/null
+++ b/src/main/java/baseball/view/BaseballView.java
@@ -0,0 +1,136 @@
+package baseball.view;
+
+import static baseball.common.BaseballEnum.BASEBALL_NUMBER_LENGTH;
+import static baseball.common.BaseballEnum.CONTINUE_THE_GAME;
+import static baseball.common.BaseballEnum.FINISH_THE_GAME;
+
+import baseball.controller.BaseballController;
+import baseball.dto.BaseballResultDto;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Scanner;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class BaseballView {
+
+ private final Scanner scanner;
+ private final BaseballController baseballController;
+
+ public BaseballView(BaseballController baseballController) {
+ this.baseballController = baseballController;
+ this.scanner = new Scanner(System.in);
+ }
+
+ public void startGame() {
+ baseballController.startGame();
+ while (baseballController.isPlaying()) {
+ playGame();
+ }
+ }
+
+ private void playGame() {
+ List playerBaseballNumber = getPlayerBaseballNumber();
+
+ BaseballResultDto baseballResultDto = baseballController
+ .getBaseballResult(playerBaseballNumber);
+
+ System.out.println(getBaseballResultString(baseballResultDto));
+ checkGameStatus(baseballResultDto);
+ }
+
+ private void checkGameStatus(BaseballResultDto baseballResultDto) {
+ if (baseballResultDto.strikeCount() == BASEBALL_NUMBER_LENGTH) {
+ baseballController.finishGame();
+ System.out.printf("%d개의 숫자를 모두 맞히셨습니다! 게임 종료 \n", BASEBALL_NUMBER_LENGTH);
+ checkToContinueGame();
+ }
+ }
+
+ private void checkToContinueGame() {
+ System.out.printf("게임을 새로 시작하려면 %d, 종료하려면 %d를 입력하세요.\n",
+ CONTINUE_THE_GAME, FINISH_THE_GAME);
+ int playerStatusInput = scanner.nextInt();
+ try {
+ validatePlayerStatusInput(playerStatusInput);
+ restartGameIfContinue(playerStatusInput);
+ } catch (IllegalArgumentException e) {
+ System.out.println(e.getMessage());
+ checkToContinueGame();
+ }
+ }
+
+ private void validatePlayerStatusInput(int playerInput) {
+ if (playerInput != CONTINUE_THE_GAME && playerInput != FINISH_THE_GAME) {
+ throw new IllegalArgumentException(
+ String.format("%d 또는 %d만 입력 가능합니다.", CONTINUE_THE_GAME, FINISH_THE_GAME)
+ );
+ }
+ }
+
+ private void restartGameIfContinue(int playerStatusInput) {
+ if (playerStatusInput == CONTINUE_THE_GAME) {
+ baseballController.startGame();
+ }
+ }
+ private List getPlayerBaseballNumber() {
+ System.out.print("숫자를 입력해주세요 : ");
+ String playerInput = scanner.nextLine();
+ try {
+ validatePlayerInput(playerInput);
+ } catch (IllegalArgumentException e) {
+ System.out.println(e.getMessage());
+ return getPlayerBaseballNumber();
+ }
+ return Arrays.stream(playerInput.split(""))
+ .map(Integer::parseInt)
+ .collect(Collectors.toList());
+ }
+
+ public void validatePlayerInput(String playerInput) {
+ isValidLength(playerInput);
+ isOnlyNumber(playerInput);
+ isNotDuplicated(playerInput);
+ }
+
+ private void isValidLength(String playerInput) {
+ if (playerInput.length() != BASEBALL_NUMBER_LENGTH) {
+ throw new IllegalArgumentException("3자리로 입력해주세요.");
+ }
+ }
+
+ private void isOnlyNumber(String playerInput) {
+ playerInput.chars().mapToObj(x -> (char)x).forEach(this::isNumber);
+ }
+
+
+ private void isNumber(char ch){
+ if (!Character.isDigit(ch)) {
+ throw new IllegalArgumentException("숫자만 입력 가능합니다.");
+ }
+ }
+
+ private void isNotDuplicated(String playerInput) {
+ Set playerInputSet = new HashSet<> (Arrays.asList(playerInput.split("")));
+ if (playerInputSet.size() != playerInput.length()) {
+ throw new IllegalArgumentException("숫자는 중복되지 않게 입력해주세요.");
+ }
+ }
+
+ public String getBaseballResultString(BaseballResultDto baseballResultDto) {
+ String baseballResultString = getStrikeString(baseballResultDto)
+ + getBallString(baseballResultDto);
+ return baseballResultString.isBlank() ? "낫싱" : baseballResultString;
+ }
+
+ private String getStrikeString(BaseballResultDto baseballResultDto) {
+ int strikeCount = baseballResultDto.strikeCount();
+ return strikeCount != 0 ? String.format("%d 스트라이크 ", strikeCount) : "";
+ }
+
+ private String getBallString(BaseballResultDto baseballResultDto) {
+ int ballCount = baseballResultDto.ballCount();
+ return ballCount != 0 ? String.format("%d 볼", ballCount) : "";
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/baseball/domain/BaseballNumberTest.java b/src/test/java/baseball/domain/BaseballNumberTest.java
new file mode 100644
index 00000000..c40e9f73
--- /dev/null
+++ b/src/test/java/baseball/domain/BaseballNumberTest.java
@@ -0,0 +1,31 @@
+package baseball.domain;
+
+import java.util.List;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class BaseballNumberTest {
+
+ BaseballNumber baseballNumber;
+
+ @BeforeEach
+ public void beforeEach() {
+ baseballNumber = new BaseballNumber();
+ }
+
+ @DisplayName("생성되는 숫자의 범위는 1-9이다.")
+ @Test
+ void GenerateBaseballNumbersTest() {
+ // given
+ baseballNumber.generateBaseballNumber();
+
+ // when
+ List numbers = baseballNumber.getNumber();
+
+ // then
+ assertThat(numbers.stream().allMatch(v -> 1 <= v && v <= 9)).isTrue();
+
+ }
+}
diff --git a/src/test/java/baseball/service/BaseballServiceTest.java b/src/test/java/baseball/service/BaseballServiceTest.java
new file mode 100644
index 00000000..ed69e1fd
--- /dev/null
+++ b/src/test/java/baseball/service/BaseballServiceTest.java
@@ -0,0 +1,49 @@
+package baseball.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import baseball.domain.BaseballNumber;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class BaseballServiceTest {
+
+ private BaseballNumber baseballNumber;
+ private BaseballService baseballService;
+
+ @BeforeEach
+ public void beforeEach() {
+ baseballNumber = new BaseballNumber();
+ baseballService = new BaseballService(baseballNumber);
+ baseballService.startGame();
+ }
+
+ @DisplayName("볼의 갯수를 계산할 수 있습니다.")
+ @Test
+ void getBallCount() {
+ // given
+ List userBaseballNumber = new ArrayList<>(Arrays.asList(1, 2, 3));
+ List computerBaseballNumber = new ArrayList<>(Arrays.asList(1, 3, 2));
+ baseballService.setBaseballNumber(computerBaseballNumber);
+
+ // when & then
+ assertThat(baseballService.getBallCount(userBaseballNumber)).isEqualTo(2);
+
+ }
+
+ @DisplayName("스트라이크의 갯수를 계산할 수 있습니다.")
+ @Test
+ void getStrikeCount() {
+ // given
+ List userBaseballNumber = new ArrayList<>(Arrays.asList(1, 2, 4));
+ List computerBaseballNumber = new ArrayList<>(Arrays.asList(1, 2, 3));
+ baseballService.setBaseballNumber(computerBaseballNumber);
+
+ // when & then
+ assertThat(baseballService.getStrikeCount(userBaseballNumber)).isEqualTo(2);
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/baseball/view/BaseballViewTest.java b/src/test/java/baseball/view/BaseballViewTest.java
new file mode 100644
index 00000000..3bb9be9f
--- /dev/null
+++ b/src/test/java/baseball/view/BaseballViewTest.java
@@ -0,0 +1,102 @@
+package baseball.view;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.assertj.core.api.Assertions.assertThat;
+import baseball.controller.BaseballController;
+import baseball.domain.BaseballNumber;
+import baseball.dto.BaseballResultDto;
+import baseball.service.BaseballService;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class BaseballViewTest {
+
+ private BaseballView baseballView;
+
+ @BeforeEach
+ public void beforeEach() {
+ BaseballNumber baseballNumber = new BaseballNumber();
+ BaseballService baseballService = new BaseballService(baseballNumber);
+ BaseballController baseballController = new BaseballController(baseballService);
+ baseballView = new BaseballView(baseballController);
+ }
+
+ @DisplayName("입력이 3글자가 아니면 Exception이 발생합니다.")
+ @Test
+ void isValidLength() {
+ // given
+ String fourLengthInput = "1234";
+
+ // when & then
+ assertThrows(
+ IllegalArgumentException.class,
+ () -> baseballView.validatePlayerInput(fourLengthInput)
+ );
+ }
+
+ @DisplayName("숫자가 아닌 다른 값이 input으로 들어가면 Exception이 발생합니다.")
+ @Test
+ void isOnlyNumber() {
+ // given
+ String notOnlyNumberInput = "12#";
+
+ // when & then
+ assertThrows(
+ IllegalArgumentException.class,
+ () -> baseballView.validatePlayerInput(notOnlyNumberInput)
+ );
+ }
+
+ @DisplayName("중복된 숫자를 입력하면 Exception이 발생합니다.")
+ @Test
+ void isNotDuplicated() {
+ // given
+ String duplicatedNumberInput = "112";
+
+ // when & then
+ assertThrows(
+ IllegalArgumentException.class,
+ () -> baseballView.validatePlayerInput(duplicatedNumberInput)
+ );
+ }
+
+ @DisplayName("하나도 맞지 않으면 '낫싱'이 반환됩니다.")
+ @Test
+ void getBaseballResultString() {
+ // given
+ BaseballResultDto baseballResultDto = new BaseballResultDto(0, 0);
+
+ // when
+ String resultString = baseballView.getBaseballResultString(baseballResultDto);
+
+ // then
+ assertThat(resultString).isEqualTo("낫싱");
+ }
+
+ @DisplayName("스트라이크가 0이 아니면 스트라이크에 대한 정보가 포함됩니다.")
+ @Test
+ void getStrikeString() {
+ // given
+ BaseballResultDto baseballResultDto = new BaseballResultDto(1, 0);
+
+ // when
+ String resultString = baseballView.getBaseballResultString(baseballResultDto);
+
+ // then
+ assertThat(resultString).contains("스트라이크");
+ }
+
+ @DisplayName("볼이 0이 아니면 볼에 대한 정보가 포함됩니다.")
+ @Test
+ void getBallString() {
+ // given
+ BaseballResultDto baseballResultDto = new BaseballResultDto(0, 1);
+
+ // when
+ String resultString = baseballView.getBaseballResultString(baseballResultDto);
+
+ // then
+ assertThat(resultString).contains("볼");
+ }
+}
\ No newline at end of file