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Diffstat (limited to 'Lib/test/test_decimal.py')
| -rw-r--r-- | Lib/test/test_decimal.py | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py index 41d1dd5..513ba16 100644 --- a/Lib/test/test_decimal.py +++ b/Lib/test/test_decimal.py @@ -901,6 +901,38 @@ class DecimalUsabilityTest(unittest.TestCase): def test_hash_method(self): #just that it's hashable hash(Decimal(23)) + + test_values = [Decimal(sign*(2**m + n)) + for m in [0, 14, 15, 16, 17, 30, 31, + 32, 33, 62, 63, 64, 65, 66] + for n in range(-10, 10) + for sign in [-1, 1]] + test_values.extend([ + Decimal("-0"), # zeros + Decimal("0.00"), + Decimal("-0.000"), + Decimal("0E10"), + Decimal("-0E12"), + Decimal("10.0"), # negative exponent + Decimal("-23.00000"), + Decimal("1230E100"), # positive exponent + Decimal("-4.5678E50"), + # a value for which hash(n) != hash(n % (2**64-1)) + # in Python pre-2.6 + Decimal(2**64 + 2**32 - 1), + # selection of values which fail with the old (before + # version 2.6) long.__hash__ + Decimal("1.634E100"), + Decimal("90.697E100"), + Decimal("188.83E100"), + Decimal("1652.9E100"), + Decimal("56531E100"), + ]) + + # check that hash(d) == hash(int(d)) for integral values + for value in test_values: + self.assertEqual(hash(value), hash(int(value))) + #the same hash that to an int self.assertEqual(hash(Decimal(23)), hash(23)) self.assertRaises(TypeError, hash, Decimal('NaN')) |