diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
new file mode 100644
index 00000000..eb4d9d56
--- /dev/null
+++ b/.github/workflows/node.js.yml
@@ -0,0 +1,31 @@
+# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
+
+name: Node.js CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x, 16.x, 18.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run build --if-present
+    - run: npm test
diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..45817f96 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -3,21 +3,42 @@ const assert = require('assert');
 const { MyClass, Student } = require('./main');
 
 test("Test MyClass's addStudent", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName('John Doe');
+    const index = myClass.addStudent(student);
+    assert.strictEqual(index, 0); // 應該成功添加並返回索引 0
+
+    const nonStudent = {}; // 非 Student 實例
+    const wrongIndex = myClass.addStudent(nonStudent);
+    assert.strictEqual(wrongIndex, -1); // 嘗試添加非 Student 實例應返回 -1
 });
 
 test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName('Jane Doe');
+    const index = myClass.addStudent(student);
+    const retrievedStudent = myClass.getStudentById(index);
+    assert.strictEqual(retrievedStudent, student); // 應該返回相同的學生實例
+
+    const nullStudent = myClass.getStudentById(-1); // 錯誤的索引
+    assert.strictEqual(nullStudent, null); // 應該返回 null
 });
 
 test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    student.setName('John Doe');
+    assert.strictEqual(student.getName(), 'John Doe'); // setName 後 getName 應該返回設置的名字
+
+    student.setName(123); // 嘗試設置非字串
+    assert.strictEqual(student.getName(), 'John Doe'); // 名字應該保持不變
 });
 
 test("Test Student's getName", () => {
-    // TODO
-    throw new Error("Test not implemented");
-});
\ No newline at end of file
+    const student = new Student();
+    assert.strictEqual(student.getName(), ''); // 如果名字未設置應返回空字串
+
+    student.setName('Jane Doe');
+    assert.strictEqual(student.getName(), 'Jane Doe'); // setName 後 getName 應該返回設置的名字
+});