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gh-136599: Add tests for long_hash #138335

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Merged
vstinner merged 3 commits into from
Sep 2, 2025
Merged

gh-136599: Add tests for long_hash #138335

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41c4cee
Add tests to increase coverage of hash of multi-digit ints
eendebakpt Sep 1, 2025
f2e2626
Update Lib/test/test_long.py
eendebakpt Sep 1, 2025
aa2a3a1
Update Lib/test/test_long.py
eendebakpt Sep 1, 2025
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16 changes: 16 additions & 0 deletions Lib/test/test_long.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1693,5 +1693,21 @@ class MyInt(int):
# GH-117195 -- This shouldn't crash
object.__sizeof__(1)

def test_hash(self):
# gh-136599
self.assertEqual(hash(-1), -2)
self.assertEqual(hash(0), 0)
self.assertEqual(hash(10), 10)

self.assertEqual(hash(sys.hash_info.modulus - 2), sys.hash_info.modulus - 2)
self.assertEqual(hash(sys.hash_info.modulus - 1), sys.hash_info.modulus - 1)
self.assertEqual(hash(sys.hash_info.modulus), 0)
self.assertEqual(hash(sys.hash_info.modulus + 1), 1)

self.assertEqual(hash(-sys.hash_info.modulus - 2), -2)
self.assertEqual(hash(-sys.hash_info.modulus - 1), -2)
self.assertEqual(hash(-sys.hash_info.modulus), 0)
self.assertEqual(hash(-sys.hash_info.modulus + 1), - (sys.hash_info.modulus - 1))
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if __name__ == "__main__":
unittest.main()
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