diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b..ae4e7da 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -2,22 +2,73 @@ const test = require('node:test');
 const assert = require('assert');
 const { MyClass, Student } = require('./main');
 
+// 測試 MyClass 的 addStudent 方法
 test("Test MyClass's addStudent", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    
+    // 新增正確的 Student 物件
+    let index = myClass.addStudent(student);
+    assert.strictEqual(index, 0);
+    assert.strictEqual(myClass.students.length, 1);
+
+    // 嘗試新增非 Student 物件
+    index = myClass.addStudent({});
+    assert.strictEqual(index, -1);
+    assert.strictEqual(myClass.students.length, 1); // 確保長度未變
 });
 
+// 測試 MyClass 的 getStudentById 方法
 test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student1 = new Student();
+    student1.setName("Alice");
+
+    const student2 = new Student();
+    student2.setName("Bob");
+
+    myClass.addStudent(student1);
+    myClass.addStudent(student2);
+
+    // 測試有效 ID
+    let result = myClass.getStudentById(0);
+    assert.strictEqual(result.getName(), "Alice");
+
+    result = myClass.getStudentById(1);
+    assert.strictEqual(result.getName(), "Bob");
+
+    // 測試無效 ID
+    result = myClass.getStudentById(-1);
+    assert.strictEqual(result, null);
+
+    result = myClass.getStudentById(10);
+    assert.strictEqual(result, null);
 });
 
+// 測試 Student 的 setName 方法
 test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+
+    // 設定正確的名字
+    student.setName("Charlie");
+    assert.strictEqual(student.getName(), "Charlie");
+
+    // 設定無效的名字（非字串）
+    student.setName(12345);
+    assert.strictEqual(student.getName(), "Charlie"); // 名字應該不變
+
+    student.setName(null);
+    assert.strictEqual(student.getName(), "Charlie"); // 名字應該不變
 });
 
+// 測試 Student 的 getName 方法
 test("Test Student's getName", () => {
-    // TODO
-    throw new Error("Test not implemented");
-});
\ No newline at end of file
+    const student = new Student();
+
+    // 初始 name 應該是空字串
+    assert.strictEqual(student.getName(), "");
+
+    // 設定名稱後應該正確返回
+    student.setName("David");
+    assert.strictEqual(student.getName(), "David");
+});