diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..28682f04 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -4,20 +4,38 @@ 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(1), -1);
+    const student = new Student();
+    student.setName('John');
+    assert.strictEqual(myClass.addStudent(student), 0);
+    assert.strictEqual(myClass.getStudentById(0), student);
 });
 
 test("Test MyClass's getStudentById", () => {
     // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName('John');
+    myClass.addStudent(student);
+    assert.strictEqual(myClass.getStudentById(0), student);
+    assert.strictEqual(myClass.getStudentById(myClass.students.length), null);
+    assert.strictEqual(myClass.getStudentById(-1), null);
 });
 
 test("Test Student's setName", () => {
     // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    assert.strictEqual(student.setName(123), undefined);
+    assert.strictEqual(student.getName(), '');
+    student.setName('John');
+    assert.strictEqual(student.getName(), "John");
 });
 
 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(), '');
+    student.setName('John');
+    assert.strictEqual(student.getName(), "John");
+}); 
\ No newline at end of file