Issue #25911: more info on test_os failure

diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 11178753ad2175a28fb6fe832ac4315eeae65502..2fb7d1b6d6bc3d0ca136c78adc3a2666b40d0663 100644 (file)
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -892,7 +892,7 @@ class WalkTests(unittest.TestCase):
         # Walk bottom-up.
         all = list(self.walk(self.walk_path, topdown=False))
 
-        self.assertEqual(len(all), 4)
+        self.assertEqual(len(all), 4, all)
         # We can't know which order SUB1 and SUB2 will appear in.
         # Not flipped:  SUB11, SUB1, SUB2, TESTFN
         #     flipped:  SUB2, SUB11, SUB1, TESTFN