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| author | Serhiy Storchaka <storchaka@gmail.com> | 2023-10-25 10:50:16 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-10-25 10:50:16 (GMT) |
| commit | 9da98c0d9a7cc55c67fb0bd3fa162fd3b2c2629b (patch) | |
| tree | 6d4daecc496a574b2920ffda4e3703dd413c4315 /Lib/test/test_memoryio.py | |
| parent | f6a45a03d0e0ef6b00c45a0de9a606b1d23cbd2f (diff) | |
| download | cpython-9da98c0d9a7cc55c67fb0bd3fa162fd3b2c2629b.zip cpython-9da98c0d9a7cc55c67fb0bd3fa162fd3b2c2629b.tar.gz cpython-9da98c0d9a7cc55c67fb0bd3fa162fd3b2c2629b.tar.bz2 | |
gh-111174: Fix crash in getbuffer() called repeatedly for empty BytesIO (GH-111210)
Diffstat (limited to 'Lib/test/test_memoryio.py')
| -rw-r--r-- | Lib/test/test_memoryio.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py index cd2faba..7312992 100644 --- a/Lib/test/test_memoryio.py +++ b/Lib/test/test_memoryio.py @@ -463,6 +463,20 @@ class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase): memio.close() self.assertRaises(ValueError, memio.getbuffer) + def test_getbuffer_empty(self): + memio = self.ioclass() + buf = memio.getbuffer() + self.assertEqual(bytes(buf), b"") + # Trying to change the size of the BytesIO while a buffer is exported + # raises a BufferError. + self.assertRaises(BufferError, memio.write, b'x') + buf2 = memio.getbuffer() + self.assertRaises(BufferError, memio.write, b'x') + buf.release() + self.assertRaises(BufferError, memio.write, b'x') + buf2.release() + memio.write(b'x') + def test_read1(self): buf = self.buftype("1234567890") self.assertEqual(self.ioclass(buf).read1(), buf) |