From c9a0cd1b72d7f55e536739f9182e82d936908200 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=97=B0=EC=A7=84?= <love_homebody@naver.com>
Date: Fri, 8 Sep 2023 17:58:03 +0900
Subject: [PATCH] =?UTF-8?q?feat(InputValidator):=20=EC=88=AB=EC=9E=90?=
 =?UTF-8?q?=EB=A1=9C=20=EC=9E=85=EB=A0=A5=ED=95=98=EC=A7=80=20=EC=95=8A?=
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---
 docs/README.md                                         | 2 +-
 src/main/java/racingcar/constant/ExceptionMessage.java | 3 ++-
 src/main/java/racingcar/validator/InputValidator.java  | 8 ++++++++
 src/main/java/racingcar/view/InputView.java            | 4 +++-
 4 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/docs/README.md b/docs/README.md
index 30c5d3a1f..fc90f9c5f 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -6,7 +6,7 @@
   - [x] 이름이 5글자가 넘을 경우 예외 발생
 - [x] 횟수 입력 안내 출력
 - [x] 횟수 입력
-  - [ ] 숫자로 입력하지 않은 경우 예외 발생
+  - [x] 숫자로 입력하지 않은 경우 예외 발생
 - [x] 입력받은 횟수만큼 자동차 이동
     - [x] 랜덤으로 숫자를 뽑는다.
     - [x] 뽑은 숫자가 4이상일 경우 이동한다.
diff --git a/src/main/java/racingcar/constant/ExceptionMessage.java b/src/main/java/racingcar/constant/ExceptionMessage.java
index f5fa85fd5..cc0ab3cbe 100644
--- a/src/main/java/racingcar/constant/ExceptionMessage.java
+++ b/src/main/java/racingcar/constant/ExceptionMessage.java
@@ -3,7 +3,8 @@
 public enum ExceptionMessage {
 
     INVALID_LENGTH("이름은 5글자 이하로 입력해야합니다."),
-    INCORRECT_DELIMITER("','로 구분하여 입력해야합니다.");
+    INCORRECT_DELIMITER("','로 구분하여 입력해야합니다."),
+    NOT_INTEGER("숫자로 입력해야 합니다.");
 
     private static final String PREFIX = "[ERROR] ";
     private final String message;
diff --git a/src/main/java/racingcar/validator/InputValidator.java b/src/main/java/racingcar/validator/InputValidator.java
index b8f7fe57d..e82057308 100644
--- a/src/main/java/racingcar/validator/InputValidator.java
+++ b/src/main/java/racingcar/validator/InputValidator.java
@@ -7,6 +7,7 @@
 public class InputValidator {
 
     private static final String DELIMITER_REGEXP = "^[a-zA-Zㄱ-힣0-9,]*$";
+    private static final String NUMBER_REGEXP = "^\\d*$";
 
     public void validateDelimiter(String input) {
         if (!Pattern.matches(DELIMITER_REGEXP, input)) {
@@ -14,4 +15,11 @@ public void validateDelimiter(String input) {
             throw new IllegalArgumentException(exceptionMessage.toString());
         }
     }
+
+    public void validateIsNumber(String input) {
+        if (!Pattern.matches(NUMBER_REGEXP, input)) {
+            ExceptionMessage exceptionMessage = ExceptionMessage.NOT_INTEGER;
+            throw new IllegalArgumentException(exceptionMessage.toString());
+        }
+    }
 }
diff --git a/src/main/java/racingcar/view/InputView.java b/src/main/java/racingcar/view/InputView.java
index e6a19df3b..661e56c5a 100644
--- a/src/main/java/racingcar/view/InputView.java
+++ b/src/main/java/racingcar/view/InputView.java
@@ -23,6 +23,8 @@ public List<Name> readNames() {
     }
 
     public int readTryCount() {
-        return Integer.parseInt(Console.readLine());
+        String input = Console.readLine();
+        inputValidator.validateIsNumber(input);
+        return Integer.parseInt(input);
     }
 }