diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_io.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index 2fb1b1e..416c547 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -1115,6 +1115,14 @@ class BufferedReaderTest(unittest.TestCase, CommonBufferedTests): self.assertEqual(rawio._extraneous_reads, 0, "failed for {}: {} != 0".format(n, rawio._extraneous_reads)) + def test_read_on_closed(self): + # Issue #23796 + b = io.BufferedReader(io.BytesIO(b"12")) + b.read(1) + b.close() + self.assertRaises(ValueError, b.peek) + self.assertRaises(ValueError, b.read1, 1) + class CBufferedReaderTest(BufferedReaderTest, SizeofTest): tp = io.BufferedReader |