diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..d7b23d76 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -2,22 +2,37 @@ const test = require('node:test');
 const assert = require('assert');
 const { MyClass, Student } = require('./main');
 
-test("Test MyClass's addStudent", () => {
-    // TODO
-    throw new Error("Test not implemented");
-});
+test("Test MyClass's addStudent", async (t) => {
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName("John Doe");
+    
+    const index = myClass.addStudent(student);
+    assert.strictEqual(index, 0); // 應該返回索引0
 
-test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const nonStudent = {};
+    const nonStudentIndex = myClass.addStudent(nonStudent);
+    assert.strictEqual(nonStudentIndex, -1); // 添加非Student對象，應返回-1
 });
 
-test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+test("Test MyClass's getStudentById", async (t) => {
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName("Jane Doe");
+    myClass.addStudent(student);
+    
+    const fetchedStudent = myClass.getStudentById(0);
+    assert.strictEqual(fetchedStudent.getName(), "Jane Doe"); // 確認可以通過ID獲取學生
+
+    const invalidStudent = myClass.getStudentById(999);
+    assert.strictEqual(invalidStudent, null); // 使用無效ID應返回null
 });
 
-test("Test Student's getName", () => {
-    // TODO
-    throw new Error("Test not implemented");
-});
\ No newline at end of file
+test("Test Student's setName and getName", async (t) => {
+    const student = new Student();
+    student.setName("John Doe");
+    assert.strictEqual(student.getName(), "John Doe"); // 檢查setName和getName功能
+
+    student.setName(123); // 嘗試使用非字符串設置名字
+    assert.strictEqual(student.getName(), "John Doe"); // 名字不應該改變
+});