diff --git a/lab1/main_test.js b/lab1/main_test.js
index 74a716b4..d1daf574 100644
--- a/lab1/main_test.js
+++ b/lab1/main_test.js
@@ -4,20 +4,37 @@ 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();
+    assert.strictEqual(myclass.addStudent(student),0);
+    assert.strictEqual(myclass.addStudent(), -1);
+    // throw new Error("Test not implemented");
 });
 
 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.ifError(myclass.getStudentById(-1));
+    // throw new Error("Test not implemented");
 });
 
 test("Test Student's setName", () => {
     // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    assert.ifError(student.setName(-1));
+    // throw new Error("Test not implemented");
 });
 
 test("Test Student's getName", () => {
     // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    student.setName("Jim");
+    assert.strictEqual(student.getName(),"Jim");
+    const student2 = new Student();
+    assert.strictEqual(student2.getName(),'');
+    // throw new Error("Test not implemented");
 });
\ No newline at end of file