diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..8ed87a20 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -3,21 +3,32 @@ 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();
+    const newStudentId = myClass.addStudent(student);
+    assert.strictEqual(newStudentId, 0);
+    assert.strictEqual(myClass.addStudent('not a student'), -1);
 });
 
 test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    myClass.addStudent(student);
+    assert.strictEqual(myClass.getStudentById(0), student);
+    assert.strictEqual(myClass.getStudentById(999), null);
 });
 
 test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    student.setName('John');
+    assert.strictEqual(student.getName(), 'John');
+    student.setName(123);
+    assert.strictEqual(student.getName(), 'John'); 
 });
 
 test("Test Student's getName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    assert.strictEqual(student.getName(), '');
+    student.setName('John');
+    assert.strictEqual(student.getName(), 'John');
 });
\ No newline at end of file