diff --git a/babel.config.json b/babel.config.json
new file mode 100644
index 0000000..1320b9a
--- /dev/null
+++ b/babel.config.json
@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/preset-env"]
+}
diff --git a/package.json b/package.json
index 9b3bca0..17b9da7 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,8 @@
 {
   "type": "module",
+  "scripts": {
+    "test": "jest --verbose --coverage tests/test.test.js"
+  },
   "dependencies": {
     "axios": "^1.6.8",
     "dayjs": "^1.11.10",
@@ -9,5 +12,10 @@
     "nodemailer": "^6.9.13",
     "sequelize": "^6.37.1",
     "youtube-transcript": "^1.1.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.24.4",
+    "@babel/preset-env": "^7.24.4",
+    "jest": "^29.7.0"
   }
 }
diff --git a/tests/add.js b/tests/add.js
new file mode 100644
index 0000000..1cdda07
--- /dev/null
+++ b/tests/add.js
@@ -0,0 +1,3 @@
+const add = (a, b) => a + b
+
+export default add
diff --git a/tests/add.test.js b/tests/add.test.js
new file mode 100644
index 0000000..405221e
--- /dev/null
+++ b/tests/add.test.js
@@ -0,0 +1,5 @@
+import add from './add'
+
+test('adds 1 + 2 to equal 3', () => {
+  expect(add(1, 2)).toBe(3)
+})
diff --git a/tests/sqluelize.join.test.js b/tests/sqluelize.join.sample.js
similarity index 87%
rename from tests/sqluelize.join.test.js
rename to tests/sqluelize.join.sample.js
index a027f42..bca7cfe 100644
--- a/tests/sqluelize.join.test.js
+++ b/tests/sqluelize.join.sample.js
@@ -1,4 +1,4 @@
-import { Sequelize, Model, DataTypes } from 'sequelize'
+import { Sequelize, DataTypes } from 'sequelize'
 const sequelize = new Sequelize(
   process.env.YOUDB_NAME || 'youtubedb',
   process.env.YOUDB_USER || 'devuser',
@@ -25,5 +25,6 @@ const Youtube = sequelize.define('Youtube', {
 
 Channel.hasMany(Youtube)
 Youtube.belongsTo(Channel)
-
-await sequelize.sync()
+;(async () => {
+  await sequelize.sync()
+})()
diff --git a/tests/test.test.js b/tests/test.test.js
index 2e72f26..64f0f20 100644
--- a/tests/test.test.js
+++ b/tests/test.test.js
@@ -1,4 +1,4 @@
-const youtube = require('./youtub')
+import youtube from '../youtube.js'
 
 describe('test', () => {
   it('test', () => {
@@ -22,7 +22,7 @@ describe('get channel info by id', () => {
     const channelInfo = await getChannelInfo(channelId)
     expect(channelInfo.title).toBe('프로그래머 김플 스튜디오')
     expect(channelInfo.thumbnail).toBe(
-      'https://yt3.ggpht.com/SrCeLz3yIf5kVvXOZz8VzenrpyYOIolN9xAdyQI9X6G-_JhiGKqR0nRQ_OcaK5c5cYkyeA0OFQ=s800-c-k-c0x00ffffff-no-rj'
+      'https://yt3.ggpht.com/SrCeLz3yIf5kVvXOZz8VzenrpyYOIolN9xAdyQI9X6G-_JhiGKqR0nRQ_OcaK5c5cYkyeA0OFQ=s240-c-k-c0x00ffffff-no-rj'
     )
   })
 })
@@ -31,7 +31,7 @@ async function getChannelInfo(channelId) {
   try {
     const response = await youtube.channels.list({
       id: channelId,
-      part: 'snippet,contentDetails', // 필요한 정보를 지정합니다.
+      part: 'snippet,contentDetails',
     })
     const items = response.data.items[0]
     const data = {
diff --git a/tests/transcript.test.js b/tests/transcript.test.js
index e3b6e34..eca5de2 100644
--- a/tests/transcript.test.js
+++ b/tests/transcript.test.js
@@ -1,4 +1,4 @@
-const fetchTranscript = require('./transcript.js')
+import fetchTranscript from '../web/transcript.js'
 
 test('', async() => {
   const videoId = '4Z8qAzlnue8'
diff --git a/tests/youtub.js b/tests/youtub.js
index c7d5b49..2b7c80e 100644
--- a/tests/youtub.js
+++ b/tests/youtub.js
@@ -5,4 +5,4 @@ const youtube = google.youtube({
   auth: process.env.YOUTUBE_API_KEY,
 })
 
-module.exports = youtube
+// module.exports = youtube