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Issue 1979: Make Decimal comparisons (other than !=, ==) involving NaN

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raise InvalidOperation (and return False if InvalidOperation is trapped).
This commit is contained in:
Mark Dickinson 2008-02-06 22:10:50 +00:00
parent 55b8c3e26f
commit 2fc9263df5
4 changed files with 145 additions and 40 deletions
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20
Lib/test/test_decimal.py
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@ -838,6 +838,19 @@ class DecimalArithmeticOperatorsTest(unittest.TestCase):
self.assertEqual(-Decimal(45), Decimal(-45)) # -
self.assertEqual(abs(Decimal(45)), abs(Decimal(-45))) # abs
def test_nan_comparisons(self):
n = Decimal('NaN')
s = Decimal('sNaN')
i = Decimal('Inf')
f = Decimal('2')
for x, y in [(n, n), (n, i), (i, n), (n, f), (f, n),
(s, n), (n, s), (s, i), (i, s), (s, f), (f, s), (s, s)]:
self.assert_(x != y)
self.assert_(not (x == y))
self.assert_(not (x < y))
self.assert_(not (x <= y))
self.assert_(not (x > y))
self.assert_(not (x >= y))
# The following are two functions used to test threading in the next class
@ -1147,7 +1160,12 @@ class DecimalUsabilityTest(unittest.TestCase):
checkSameDec("__add__", True)
checkSameDec("__div__", True)
checkSameDec("__divmod__", True)
checkSameDec("__cmp__", True)
checkSameDec("__eq__", True)
checkSameDec("__ne__", True)
checkSameDec("__le__", True)
checkSameDec("__lt__", True)
checkSameDec("__ge__", True)
checkSameDec("__gt__", True)
checkSameDec("__float__")
checkSameDec("__floordiv__", True)
checkSameDec("__hash__")