diff options
Diffstat (limited to 'Lib/test/test_io.py')
| -rw-r--r-- | Lib/test/test_io.py | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index 02f7427..5b7cfc9 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -2163,6 +2163,17 @@ class TextIOWrapperTest(unittest.TestCase): self.assertRaises(TypeError, t.__init__, b, newline=42) self.assertRaises(ValueError, t.__init__, b, newline='xyzzy') + def test_uninitialized(self): + t = self.TextIOWrapper.__new__(self.TextIOWrapper) + del t + t = self.TextIOWrapper.__new__(self.TextIOWrapper) + self.assertRaises(Exception, repr, t) + self.assertRaisesRegex((ValueError, AttributeError), + 'uninitialized|has no attribute', + t.read, 0) + t.__init__(self.MockRawIO()) + self.assertEqual(t.read(0), '') + def test_non_text_encoding_codecs_are_rejected(self): # Ensure the constructor complains if passed a codec that isn't # marked as a text encoding @@ -3024,8 +3035,6 @@ class CTextIOWrapperTest(TextIOWrapperTest): r = self.BytesIO(b"\xc3\xa9\n\n") b = self.BufferedReader(r, 1000) t = self.TextIOWrapper(b) - self.assertRaises(TypeError, t.__init__, b, newline=42) - self.assertRaises(ValueError, t.read) self.assertRaises(ValueError, t.__init__, b, newline='xyzzy') self.assertRaises(ValueError, t.read) |