X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/e4e59f87a8c4d3844dca9a14b6a4abf544c7a0c8..8d588273766675ece744f9b37c40483706f3a9d7:/tests/test_black.py

diff --git a/tests/test_black.py b/tests/test_black.py
index 6ff5840..30bb6fd 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -1291,7 +1291,7 @@ class BlackTestCase(unittest.TestCase):
         try:
             list(black.gen_python_files_in_dir(path, root, include, exclude, report))
         except ValueError as ve:
-            self.fail("`get_python_files_in_dir()` failed: {ve}")
+            self.fail(f"`get_python_files_in_dir()` failed: {ve}")
         path.iterdir.assert_called_once()
         child.resolve.assert_called_once()
         child.is_symlink.assert_called_once()