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Issue #25971: Optimized creating Fractions from floats by 2 times and from

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Decimals by 3 times.
Unified error messages in float.as_integer_ratio(), Decimal.as_integer_ratio(),
and Fraction constructors.
This commit is contained in:
Serhiy Storchaka 2015-12-29 22:34:23 +02:00
parent 5aab44b301
commit 0d250bc119
5 changed files with 22 additions and 45 deletions
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14
Lib/test/test_fractions.py
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@ -263,13 +263,13 @@ class FractionTest(unittest.TestCase):
nan = inf - inf
# bug 16469: error types should be consistent with float -> int
self.assertRaisesMessage(
OverflowError, "Cannot convert inf to Fraction.",
OverflowError, "cannot convert Infinity to integer ratio",
F.from_float, inf)
self.assertRaisesMessage(
OverflowError, "Cannot convert -inf to Fraction.",
OverflowError, "cannot convert Infinity to integer ratio",
F.from_float, -inf)
self.assertRaisesMessage(
ValueError, "Cannot convert nan to Fraction.",
ValueError, "cannot convert NaN to integer ratio",
F.from_float, nan)
def testFromDecimal(self):
@ -284,16 +284,16 @@ class FractionTest(unittest.TestCase):
# bug 16469: error types should be consistent with decimal -> int
self.assertRaisesMessage(
OverflowError, "Cannot convert Infinity to Fraction.",
OverflowError, "cannot convert Infinity to integer ratio",
F.from_decimal, Decimal("inf"))
self.assertRaisesMessage(
OverflowError, "Cannot convert -Infinity to Fraction.",
OverflowError, "cannot convert Infinity to integer ratio",
F.from_decimal, Decimal("-inf"))
self.assertRaisesMessage(
ValueError, "Cannot convert NaN to Fraction.",
ValueError, "cannot convert NaN to integer ratio",
F.from_decimal, Decimal("nan"))
self.assertRaisesMessage(
ValueError, "Cannot convert sNaN to Fraction.",
ValueError, "cannot convert NaN to integer ratio",
F.from_decimal, Decimal("snan"))
def testLimitDenominator(self):