diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_memoryio.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py index df4ff7a512..44d66c388f 100644 --- a/Lib/test/test_memoryio.py +++ b/Lib/test/test_memoryio.py @@ -166,6 +166,10 @@ class MemoryTestMixin: memio.seek(0) self.assertEqual(memio.read(None), buf) self.assertRaises(TypeError, memio.read, '') + memio.seek(len(buf) + 1) + self.assertEqual(memio.read(1), self.EOF) + memio.seek(len(buf) + 1) + self.assertEqual(memio.read(), self.EOF) memio.close() self.assertRaises(ValueError, memio.read) @@ -185,6 +189,9 @@ class MemoryTestMixin: self.assertEqual(memio.readline(-1), buf) memio.seek(0) self.assertEqual(memio.readline(0), self.EOF) + # Issue #24989: Buffer overread + memio.seek(len(buf) * 2 + 1) + self.assertEqual(memio.readline(), self.EOF) buf = self.buftype("1234567890\n") memio = self.ioclass((buf * 3)[:-1]) @@ -217,6 +224,9 @@ class MemoryTestMixin: memio.seek(0) self.assertEqual(memio.readlines(None), [buf] * 10) self.assertRaises(TypeError, memio.readlines, '') + # Issue #24989: Buffer overread + memio.seek(len(buf) * 10 + 1) + self.assertEqual(memio.readlines(), []) memio.close() self.assertRaises(ValueError, memio.readlines) @@ -238,6 +248,9 @@ class MemoryTestMixin: self.assertEqual(line, buf) i += 1 self.assertEqual(i, 10) + # Issue #24989: Buffer overread + memio.seek(len(buf) * 10 + 1) + self.assertEqual(list(memio), []) memio = self.ioclass(buf * 2) memio.close() self.assertRaises(ValueError, memio.__next__) |