diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..4b5e9b54 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -1,23 +1,41 @@
-const test = require('node:test');
-const assert = require('assert');
-const { MyClass, Student } = require('./main');
+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");
+    const myClass = new MyClass();
+    assert.strictEqual(myClass.addStudent('Not a student'), -1);
+    const student = new Student();
+    for (let i = 0; i < 3; i++) {
+        const student = new Student();
+        assert.strictEqual(myClass.addStudent(student), i);
+    }
 });
 
 test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    assert.strictEqual(myClass.getStudentById(-1), null);
+    for (let i = 0; i < 3; i++) {
+        const student = new Student();
+        myClass.addStudent(student);
+        assert.strictEqual(myClass.getStudentById(i), student);
+    }
+    assert.strictEqual(myClass.getStudentById(3), null);
 });
 
 test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    student.setName(123);
+    assert.strictEqual(student.getName(), '');
+    const name = "Pudding0803";
+    student.setName(name);
+    assert.strictEqual(student.getName(), name);
 });
 
 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(), '');
+    const name = "Pudding0803";
+    student.setName(name);
+    assert.strictEqual(student.getName(), name);
+});