refactor: 코드래빗 리뷰사항 적용

- 테스트에서 Token 생성 시, TTL을 30초로 수정
- TTL이 너무 짧으면 테스트가 간헐적으로 꺠질 위험 존재

Author: sukangpunch

src/test/java/com/example/solidconnection/security/authentication/TokenAuthenticationProviderTest.java

@@ -44,6 +44,8 @@ void setUp() {
         user = siteUserFixture.사용자();
     }
 
+    private static final long VALID_TOKEN_TTL_MS = 30 * 1000L;
+
     @Test
     void 처리할_수_있는_타입인지를_반환한다() {
         // given
@@ -118,7 +120,7 @@ private String createValidToken(long id) {
         return Jwts.builder()
                 .subject(String.valueOf(id))
                 .issuedAt(new Date())
-                .expiration(new Date(System.currentTimeMillis() + 1000))
+                .expiration(new Date(System.currentTimeMillis() + VALID_TOKEN_TTL_MS))
                 .signWith(Keys.hmacShaKeyFor(jwtProperties.secret().getBytes(StandardCharsets.UTF_8)))
                 .compact();
     }
@@ -127,7 +129,7 @@ private String createExpiredToken() {
         return Jwts.builder()
                 .subject(String.valueOf(user.getId()))
                 .issuedAt(new Date())
-                .expiration(new Date(System.currentTimeMillis() - 1000))
+                .expiration(new Date(System.currentTimeMillis() - VALID_TOKEN_TTL_MS))
                 .signWith(Keys.hmacShaKeyFor(jwtProperties.secret().getBytes(StandardCharsets.UTF_8)))
                 .compact();
     }
@@ -136,7 +138,7 @@ private String createWrongSubjectTypeToken() {
         return Jwts.builder()
                 .subject("subject")
                 .issuedAt(new Date())
-                .expiration(new Date(System.currentTimeMillis() + 1000))
+                .expiration(new Date(System.currentTimeMillis() + VALID_TOKEN_TTL_MS))
                 .signWith(Keys.hmacShaKeyFor(jwtProperties.secret().getBytes(StandardCharsets.UTF_8)))
                 .compact();
     }