diff --git a/tests/tests_gestform.py b/tests/tests_gestform.py
index d69b816..f559c81 100644
--- a/tests/tests_gestform.py
+++ b/tests/tests_gestform.py
@@ -4,10 +4,14 @@ from gestform import generate_numbers_list, MIN, MAX
 
 
 class RandomListNumber(TestCase):
+    def setUp(self) -> None:
+        super().setUp()
+        self.generated: list = generate_numbers_list(mini=MIN, maxi=MAX)
+
     def test_generate_numbers_list(self):
-        generated: list = generate_numbers_list(mini=MIN, maxi=MAX)
-        self.assertEqual(min(generated), MIN)
-        self.assertEqual(max(generated), MAX)
-        self.assertIn(0, generated)
-        self.assertNotIn(MIN-1, generated)
-        self.assertNotIn(MAX+1, generated)
+        self.assertEqual(min(self.generated), MIN)
+        self.assertEqual(max(self.generated), MAX)
+        self.assertIn(0, self.generated)
+        self.assertNotIn(MIN-1, self.generated)
+        self.assertNotIn(MAX+1, self.generated)
+