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| author | Antoine Pitrou <solipsis@pitrou.net> | 2012-11-11 19:11:15 (GMT) |
|---|---|---|
| committer | Antoine Pitrou <solipsis@pitrou.net> | 2012-11-11 19:11:15 (GMT) |
| commit | f2985650a00f4aae6803cef1d2082385edad1824 (patch) | |
| tree | d280de488079e9b729dc49e6b210410f80dc074d | |
| parent | 05bc966490be9bfe62d906af7fa574547669dbc6 (diff) | |
| parent | 37bfa4e7ec5df1528aa208150933a3fc54508cf9 (diff) | |
| download | cpython-f2985650a00f4aae6803cef1d2082385edad1824.zip cpython-f2985650a00f4aae6803cef1d2082385edad1824.tar.gz cpython-f2985650a00f4aae6803cef1d2082385edad1824.tar.bz2 | |
Add a test for hashing of unaligned memory buffers (from issue #16427).
| -rw-r--r-- | Lib/test/test_hash.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/test/test_hash.py b/Lib/test/test_hash.py index 0776779..d1ddc76 100644 --- a/Lib/test/test_hash.py +++ b/Lib/test/test_hash.py @@ -45,6 +45,16 @@ class HashEqualityTestCase(unittest.TestCase): self.same_hash(int(1.23e300), float(1.23e300)) self.same_hash(float(0.5), complex(0.5, 0.0)) + def test_unaligned_buffers(self): + # The hash function for bytes-like objects shouldn't have + # alignment-dependent results (example in issue #16427). + b = b"123456789abcdefghijklmnopqrstuvwxyz" * 128 + for i in range(16): + for j in range(16): + aligned = b[i:128+j] + unaligned = memoryview(b)[i:128+j] + self.assertEqual(hash(aligned), hash(unaligned)) + _default_hash = object.__hash__ class DefaultHash(object): pass |