refactor: PR시 테스트 workflow 동작하도록 구성

.github/workflows/pr-test-validation.yml

@@ -0,0 +1,29 @@
+name: PR Test Validation
+
+on:
+    pull_request:
+      types: [ opened, synchronize, reopened ]
+      branches: [ '*' ]
+
+env:
+  NODE_VERSION: '22'
+
+jobs:
+  test:
+    name: Run Unit Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test

tests/utils/DateUtils.test.ts

@@ -3,15 +3,12 @@ import { getKoreaTimeISO, parseDate, isEqualOrAfterDateOnly } from '../../src/ut
 describe('DateUtils', () => {
     describe('getKoreaTimeISO', () => {
         it('ISO 형식과 한국 시간대 확인', () => {
+            //given
             const result = getKoreaTimeISO();
 
+            //when then
             // ISO 형식 검증 (YYYY-MM-DDTHH:mm:ss+09:00)
             expect(result).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\+09:00$/);
-
-            // 한국 시간대 검증
-            const date = new Date(result);
-            const koreaOffset = date.getTimezoneOffset();
-            expect(koreaOffset).toBe(-540); // UTC+9 (9 * 60 = 540 minutes)
         });
     });