diff --git a/tests/basic/test_main.py b/tests/basic/test_main.py
index db9ddca09..102f2226f 100644
--- a/tests/basic/test_main.py
+++ b/tests/basic/test_main.py
@@ -401,18 +401,18 @@ class TestMain(TestCase):
         with GitTemporaryDirectory():
             test_file = "test_file.txt"
             Path(test_file).touch()
-            
+
             coder = main(
                 ["--read", test_file, "--exit", "--yes"],
                 input=DummyInput(),
                 output=DummyOutput(),
                 return_coder=True,
             )
-            
+
             self.assertIn(str(Path(test_file).resolve()), coder.abs_read_only_fnames)
 
     def test_read_option_with_external_file(self):
-        with tempfile.NamedTemporaryFile(mode='w', delete=False) as external_file:
+        with tempfile.NamedTemporaryFile(mode="w", delete=False) as external_file:
             external_file.write("External file content")
             external_file_path = external_file.name
 
@@ -424,7 +424,7 @@ class TestMain(TestCase):
                     output=DummyOutput(),
                     return_coder=True,
                 )
-                
+
                 self.assertIn(external_file_path, coder.abs_read_only_fnames)
         finally:
             os.unlink(external_file_path)