diff options
Diffstat (limited to 'Lib/test/test_io.py')
| -rw-r--r-- | Lib/test/test_io.py | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index 1fe1cba516..ad22dfe9b2 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -3886,16 +3886,6 @@ class MiscIOTest(unittest.TestCase): self.assertEqual(f.mode, "wb") f.close() - with support.check_warnings(('', DeprecationWarning)): - f = self.open(support.TESTFN, "U") - self.assertEqual(f.name, support.TESTFN) - self.assertEqual(f.buffer.name, support.TESTFN) - self.assertEqual(f.buffer.raw.name, support.TESTFN) - self.assertEqual(f.mode, "U") - self.assertEqual(f.buffer.mode, "rb") - self.assertEqual(f.buffer.raw.mode, "rb") - f.close() - f = self.open(support.TESTFN, "w+") self.assertEqual(f.mode, "w+") self.assertEqual(f.buffer.mode, "rb+") # Does it really matter? @@ -3909,6 +3899,13 @@ class MiscIOTest(unittest.TestCase): f.close() g.close() + def test_removed_u_mode(self): + # "U" mode has been removed in Python 3.9 + for mode in ("U", "rU", "r+U"): + with self.assertRaises(ValueError) as cm: + self.open(support.TESTFN, mode) + self.assertIn('invalid mode', str(cm.exception)) + def test_io_after_close(self): for kwargs in [ {"mode": "w"}, |