#3703 unhelpful _fileio.FileIO error message when trying to open a directory
Reviewer: Gregory P. Smith
diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
index a8b15fa..5a0e1a6 100644
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -101,6 +101,17 @@
# should raise on closed file
self.assertRaises(ValueError, method)
+ def testOpendir(self):
+ # Issue 3703: opening a directory should fill the errno
+ # Windows always returns "[Errno 13]: Permission denied
+ # Unix calls dircheck() and returns "[Errno 21]: Is a directory"
+ try:
+ _fileio._FileIO('.', 'r')
+ except IOError as e:
+ self.assertNotEqual(e.errno, 0)
+ else:
+ self.fail("Should have raised IOError")
+
class OtherFileTests(unittest.TestCase):