diff --git a/tests/teste_unitario.py b/tests/teste_unitario.py
index c3e7e3d..95d370d 100644
--- a/tests/teste_unitario.py
+++ b/tests/teste_unitario.py
@@ -1,4 +1,5 @@
 import pytest
+import unittest
 from io import BytesIO
 from app import app
 
@@ -8,6 +9,11 @@ def client():
     with app.test_client() as client:
         yield client
 
+class TestExample(unittest.TestCase):
+    def test_addition(self):
+        self.assertEqual(1 + 1, 2)
+
+
 def test_index(client):
     response = client.get('/')
     assert response.status_code == 200