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Diffstat (limited to 'Lib/test/test_long.py')
| -rw-r--r-- | Lib/test/test_long.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_long.py b/Lib/test/test_long.py index 2de4526..d092e01 100644 --- a/Lib/test/test_long.py +++ b/Lib/test/test_long.py @@ -985,6 +985,10 @@ class LongTest(unittest.TestCase): self.assertEqual((-1122) >> 9, -3) self.assertEqual(2**128 >> 9, 2**119) self.assertEqual(-2**128 >> 9, -2**119) + # Exercise corner case of the current algorithm, where the result of + # shifting a two-limb int by the limb size still has two limbs. + self.assertEqual((1 - BASE*BASE) >> SHIFT, -BASE) + self.assertEqual((BASE - 1 - BASE*BASE) >> SHIFT, -BASE) def test_big_rshift(self): self.assertEqual(42 >> 32, 0) |