diff --git a/src/utils/formatTimeAgo.test.ts b/src/utils/formatTimeAgo.test.ts
new file mode 100644
index 00000000..7fb5ac6e
--- /dev/null
+++ b/src/utils/formatTimeAgo.test.ts
@@ -0,0 +1,32 @@
+import formatTimeAgo from './formatTimeAgo'; // formatTimeAgo 함수를 임포트합니다.
+
+describe('시간이 얼마나 지났는지 값을 반환합니다', () => {
+  test('몇초 전인지 반환합니다', () => {
+    const now = new Date();
+    const thirtySecondsAgo = new Date(now.getTime() - 30 * 1000);
+    expect(formatTimeAgo(thirtySecondsAgo)).toBe('30초 전');
+  });
+
+  test('몇분 전인지 반환합니다', () => {
+    const now = new Date();
+    const fiveMinutesAgo = new Date(now.getTime() - 5 * 60 * 1000);
+    expect(formatTimeAgo(fiveMinutesAgo)).toBe('5분 전');
+  });
+
+  test('몇시간 전인지 반환합니다', () => {
+    const now = new Date();
+    const threeHoursAgo = new Date(now.getTime() - 3 * 60 * 60 * 1000);
+    expect(formatTimeAgo(threeHoursAgo)).toBe('3시간 전');
+  });
+
+  test('몇일 전인지 반환합니다', () => {
+    const now = new Date();
+    const twoDaysAgo = new Date(now.getTime() - 2 * 24 * 60 * 60 * 1000);
+    expect(formatTimeAgo(twoDaysAgo)).toBe('2일 전');
+  });
+
+  test('그 외의 날짜 형식을 반환합니다', () => {
+    const oldDate = new Date('2020-01-01');
+    expect(formatTimeAgo(oldDate)).toMatch(/\d{2}\.\d{2}\.\d{2}/);
+  });
+});
diff --git a/src/utils/parseInviteCode.test.ts b/src/utils/parseInviteCode.test.ts
new file mode 100644
index 00000000..5b56babe
--- /dev/null
+++ b/src/utils/parseInviteCode.test.ts
@@ -0,0 +1,36 @@
+import {parseInviteCode} from './parseInviteCode';
+
+describe('parseInviteCode Function', () => {
+  let consoleError: typeof console.error;
+
+  beforeEach(() => {
+    consoleError = console.error;
+    console.error = jest.fn();
+  });
+
+  afterEach(() => {
+    console.error = consoleError;
+  });
+  it('올바른 토큰 형식입니다.', () => {
+    const validInviteCode =
+      'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJvayIsInB1cnBvc2UiOiJqb2luX3NwYWNlIiwic3BhY2VfaWQiOjEsImlhdCI6MTcwNTkzMzE4NCwiZXhwIjoxNzA1OTQwMzg0fQ.Gj-f92qBjLJ_1OVMx-KGs4a_wjLKmq3ZEtROLobl2h4';
+    const expectedDecoded = {
+      exp: 1705940384,
+      iat: 1705933184,
+      iss: 'ok',
+      purpose: 'join_space',
+      space_id: 1,
+    };
+
+    const result = parseInviteCode(validInviteCode);
+
+    expect(result).toEqual(expectedDecoded);
+  });
+
+  it('잘못된 토큰 형식입니다.', () => {
+    const invalidInviteCode = '이상한코드.dfadfa.d123123';
+    const result = parseInviteCode(invalidInviteCode);
+
+    expect(result).toBeNull();
+  });
+});
diff --git a/src/utils/parseInviteCode.ts b/src/utils/parseInviteCode.ts
index dd2eb553..4e1ec811 100644
--- a/src/utils/parseInviteCode.ts
+++ b/src/utils/parseInviteCode.ts
@@ -7,7 +7,7 @@ export function parseInviteCode(inviteCode: string): InviteCode | null {
     const decoded = jwtDecode<InviteCode>(inviteCode);
     return decoded;
   } catch (error) {
-    console.error('JWT 디코딩 중 에러 발생:', error);
+    console.log('[친구초대]잘못된 토큰 형식입니다.', error);
     return null;
   }
 }
diff --git a/src/utils/parsingAlarm.test.ts b/src/utils/parsingAlarm.test.ts
new file mode 100644
index 00000000..89965c0e
--- /dev/null
+++ b/src/utils/parsingAlarm.test.ts
@@ -0,0 +1,68 @@
+import {parsingAlarmTravel} from './parsingAlarm';
+
+import {NotificationData, NotificationDetails} from '@/types/notification';
+
+describe('parsingAlarmTravel Function', () => {
+  let consoleError: typeof console.error;
+
+  beforeEach(() => {
+    consoleError = console.error;
+    console.error = jest.fn();
+  });
+
+  afterEach(() => {
+    console.error = consoleError;
+  });
+
+  it('should return an empty array for empty or null input', () => {
+    expect(parsingAlarmTravel([])).toEqual([]);
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    expect(parsingAlarmTravel(null as any)).toEqual([]);
+  });
+
+  it('should parse valid notification details correctly', () => {
+    const notificationDetails: NotificationDetails[] = [
+      {
+        id: 1,
+        type: 'VOTE_CREATED',
+        notificationInformation: JSON.stringify({
+          spaceEventInfo: {spaceTitle: '테스트 여행지'},
+          memberEventInfo: {memberNickname: '테스트 사용자'},
+          voteEventInfo: {voteTitle: '테스트 투표'},
+          createdAt: '2024-01-01T00:00:00Z',
+        }),
+        isRead: false,
+        receiverId: 123,
+        createdAt: '2024-01-01T00:00:00Z',
+      },
+    ];
+
+    const expected: NotificationData[] = [
+      {
+        url: '',
+        title: '[테스트 여행지] 테스트 사용자 님이 새로운 투표를 생성했습니다.',
+        time: '2024-01-01T00:00:00Z',
+      },
+    ];
+
+    const result = parsingAlarmTravel(notificationDetails);
+
+    expect(result).toEqual(expected);
+  });
+
+  it('should handle incorrect JSON format gracefully', () => {
+    const notificationDetailsWithBadJSON: NotificationDetails[] = [
+      {
+        id: 2,
+        type: 'VOTE_CREATED',
+        notificationInformation: 'not a valid json',
+        isRead: false,
+        receiverId: 456,
+        createdAt: '2024-01-02T00:00:00Z',
+      },
+    ];
+
+    expect(() => parsingAlarmTravel(notificationDetailsWithBadJSON)).not.toThrow();
+    expect(parsingAlarmTravel(notificationDetailsWithBadJSON)).toEqual([]);
+  });
+});