mirror of https://github.com/python/cpython
Replace R=fractions.Fraction with F=fractions.Fraction in
test_fractions.py. This should have been part of the name change from Rational to Fraction.
This commit is contained in:
Mark Dickinson
parent
0aa52a1658
commit
5f8bd3729e
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@ -8,7 +8,7 @@ import fractions
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import unittest
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from copy import copy, deepcopy
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from cPickle import dumps, loads
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R = fractions.Fraction
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F = fractions.Fraction
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gcd = fractions.gcd
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@ -49,79 +49,79 @@ class FractionTest(unittest.TestCase):
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self.fail("%s not raised" % exc_type.__name__)
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def testInit(self):
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self.assertEquals((0, 1), _components(R()))
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self.assertEquals((7, 1), _components(R(7)))
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self.assertEquals((7, 3), _components(R(R(7, 3))))
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self.assertEquals((0, 1), _components(F()))
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self.assertEquals((7, 1), _components(F(7)))
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self.assertEquals((7, 3), _components(F(F(7, 3))))
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self.assertEquals((-1, 1), _components(R(-1, 1)))
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self.assertEquals((-1, 1), _components(R(1, -1)))
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self.assertEquals((1, 1), _components(R(-2, -2)))
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self.assertEquals((1, 2), _components(R(5, 10)))
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self.assertEquals((7, 15), _components(R(7, 15)))
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self.assertEquals((10**23, 1), _components(R(10**23)))
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self.assertEquals((-1, 1), _components(F(-1, 1)))
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self.assertEquals((-1, 1), _components(F(1, -1)))
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self.assertEquals((1, 1), _components(F(-2, -2)))
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self.assertEquals((1, 2), _components(F(5, 10)))
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self.assertEquals((7, 15), _components(F(7, 15)))
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self.assertEquals((10**23, 1), _components(F(10**23)))
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self.assertRaisesMessage(ZeroDivisionError, "Fraction(12, 0)",
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R, 12, 0)
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self.assertRaises(TypeError, R, 1.5)
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self.assertRaises(TypeError, R, 1.5 + 3j)
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F, 12, 0)
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self.assertRaises(TypeError, F, 1.5)
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self.assertRaises(TypeError, F, 1.5 + 3j)
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self.assertRaises(TypeError, R, R(1, 2), 3)
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self.assertRaises(TypeError, R, "3/2", 3)
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self.assertRaises(TypeError, F, F(1, 2), 3)
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self.assertRaises(TypeError, F, "3/2", 3)
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def testFromString(self):
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self.assertEquals((5, 1), _components(R("5")))
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self.assertEquals((3, 2), _components(R("3/2")))
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self.assertEquals((3, 2), _components(R(" \n +3/2")))
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self.assertEquals((-3, 2), _components(R("-3/2 ")))
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self.assertEquals((13, 2), _components(R(" 013/02 \n ")))
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self.assertEquals((13, 2), _components(R(u" 013/02 \n ")))
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self.assertEquals((5, 1), _components(F("5")))
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self.assertEquals((3, 2), _components(F("3/2")))
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self.assertEquals((3, 2), _components(F(" \n +3/2")))
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self.assertEquals((-3, 2), _components(F("-3/2 ")))
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self.assertEquals((13, 2), _components(F(" 013/02 \n ")))
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self.assertEquals((13, 2), _components(F(u" 013/02 \n ")))
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self.assertEquals((16, 5), _components(R(" 3.2 ")))
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self.assertEquals((-16, 5), _components(R(u" -3.2 ")))
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self.assertEquals((-3, 1), _components(R(u" -3. ")))
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self.assertEquals((3, 5), _components(R(u" .6 ")))
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self.assertEquals((16, 5), _components(F(" 3.2 ")))
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self.assertEquals((-16, 5), _components(F(u" -3.2 ")))
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self.assertEquals((-3, 1), _components(F(u" -3. ")))
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self.assertEquals((3, 5), _components(F(u" .6 ")))
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self.assertRaisesMessage(
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ZeroDivisionError, "Fraction(3, 0)",
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R, "3/0")
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F, "3/0")
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self.assertRaisesMessage(
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ValueError, "Invalid literal for Fraction: 3/",
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R, "3/")
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F, "3/")
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self.assertRaisesMessage(
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ValueError, "Invalid literal for Fraction: 3 /2",
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R, "3 /2")
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F, "3 /2")
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self.assertRaisesMessage(
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# Denominators don't need a sign.
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ValueError, "Invalid literal for Fraction: 3/+2",
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R, "3/+2")
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F, "3/+2")
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self.assertRaisesMessage(
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# Imitate float's parsing.
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ValueError, "Invalid literal for Fraction: + 3/2",
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R, "+ 3/2")
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F, "+ 3/2")
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self.assertRaisesMessage(
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# Avoid treating '.' as a regex special character.
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ValueError, "Invalid literal for Fraction: 3a2",
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R, "3a2")
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F, "3a2")
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self.assertRaisesMessage(
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# Only parse ordinary decimals, not scientific form.
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ValueError, "Invalid literal for Fraction: 3.2e4",
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R, "3.2e4")
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F, "3.2e4")
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self.assertRaisesMessage(
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# Don't accept combinations of decimals and fractions.
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ValueError, "Invalid literal for Fraction: 3/7.2",
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R, "3/7.2")
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F, "3/7.2")
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self.assertRaisesMessage(
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# Don't accept combinations of decimals and fractions.
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ValueError, "Invalid literal for Fraction: 3.2/7",
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R, "3.2/7")
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F, "3.2/7")
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self.assertRaisesMessage(
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# Allow 3. and .3, but not .
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ValueError, "Invalid literal for Fraction: .",
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R, ".")
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F, ".")
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def testImmutable(self):
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r = R(7, 3)
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r = F(7, 3)
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r.__init__(2, 15)
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self.assertEquals((7, 3), _components(r))
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@ -134,237 +134,237 @@ class FractionTest(unittest.TestCase):
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r._denominator = 2
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self.assertEquals((4, 2), _components(r))
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# Which breaks some important operations:
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self.assertNotEquals(R(4, 2), r)
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self.assertNotEquals(F(4, 2), r)
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def testFromFloat(self):
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self.assertRaisesMessage(
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TypeError, "Fraction.from_float() only takes floats, not 3 (int)",
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R.from_float, 3)
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F.from_float, 3)
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self.assertEquals((0, 1), _components(R.from_float(-0.0)))
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self.assertEquals((10, 1), _components(R.from_float(10.0)))
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self.assertEquals((-5, 2), _components(R.from_float(-2.5)))
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self.assertEquals((0, 1), _components(F.from_float(-0.0)))
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self.assertEquals((10, 1), _components(F.from_float(10.0)))
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self.assertEquals((-5, 2), _components(F.from_float(-2.5)))
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self.assertEquals((99999999999999991611392, 1),
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_components(R.from_float(1e23)))
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self.assertEquals(float(10**23), float(R.from_float(1e23)))
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_components(F.from_float(1e23)))
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self.assertEquals(float(10**23), float(F.from_float(1e23)))
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self.assertEquals((3602879701896397, 1125899906842624),
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_components(R.from_float(3.2)))
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self.assertEquals(3.2, float(R.from_float(3.2)))
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_components(F.from_float(3.2)))
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self.assertEquals(3.2, float(F.from_float(3.2)))
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inf = 1e1000
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nan = inf - inf
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self.assertRaisesMessage(
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TypeError, "Cannot convert inf to Fraction.",
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R.from_float, inf)
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F.from_float, inf)
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self.assertRaisesMessage(
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TypeError, "Cannot convert -inf to Fraction.",
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R.from_float, -inf)
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F.from_float, -inf)
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self.assertRaisesMessage(
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TypeError, "Cannot convert nan to Fraction.",
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R.from_float, nan)
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F.from_float, nan)
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def testFromDecimal(self):
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self.assertRaisesMessage(
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TypeError,
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"Fraction.from_decimal() only takes Decimals, not 3 (int)",
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R.from_decimal, 3)
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self.assertEquals(R(0), R.from_decimal(Decimal("-0")))
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self.assertEquals(R(5, 10), R.from_decimal(Decimal("0.5")))
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self.assertEquals(R(5, 1000), R.from_decimal(Decimal("5e-3")))
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self.assertEquals(R(5000), R.from_decimal(Decimal("5e3")))
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self.assertEquals(1 - R(1, 10**30),
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R.from_decimal(Decimal("0." + "9" * 30)))
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F.from_decimal, 3)
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self.assertEquals(F(0), F.from_decimal(Decimal("-0")))
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self.assertEquals(F(5, 10), F.from_decimal(Decimal("0.5")))
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self.assertEquals(F(5, 1000), F.from_decimal(Decimal("5e-3")))
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self.assertEquals(F(5000), F.from_decimal(Decimal("5e3")))
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self.assertEquals(1 - F(1, 10**30),
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F.from_decimal(Decimal("0." + "9" * 30)))
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self.assertRaisesMessage(
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TypeError, "Cannot convert Infinity to Fraction.",
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R.from_decimal, Decimal("inf"))
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F.from_decimal, Decimal("inf"))
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self.assertRaisesMessage(
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TypeError, "Cannot convert -Infinity to Fraction.",
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R.from_decimal, Decimal("-inf"))
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F.from_decimal, Decimal("-inf"))
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self.assertRaisesMessage(
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TypeError, "Cannot convert NaN to Fraction.",
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R.from_decimal, Decimal("nan"))
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F.from_decimal, Decimal("nan"))
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self.assertRaisesMessage(
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TypeError, "Cannot convert sNaN to Fraction.",
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R.from_decimal, Decimal("snan"))
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F.from_decimal, Decimal("snan"))
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def testLimitDenominator(self):
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rpi = R('3.1415926535897932')
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self.assertEqual(rpi.limit_denominator(10000), R(355, 113))
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self.assertEqual(-rpi.limit_denominator(10000), R(-355, 113))
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self.assertEqual(rpi.limit_denominator(113), R(355, 113))
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self.assertEqual(rpi.limit_denominator(112), R(333, 106))
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self.assertEqual(R(201, 200).limit_denominator(100), R(1))
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self.assertEqual(R(201, 200).limit_denominator(101), R(102, 101))
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self.assertEqual(R(0).limit_denominator(10000), R(0))
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rpi = F('3.1415926535897932')
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self.assertEqual(rpi.limit_denominator(10000), F(355, 113))
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self.assertEqual(-rpi.limit_denominator(10000), F(-355, 113))
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self.assertEqual(rpi.limit_denominator(113), F(355, 113))
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self.assertEqual(rpi.limit_denominator(112), F(333, 106))
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self.assertEqual(F(201, 200).limit_denominator(100), F(1))
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self.assertEqual(F(201, 200).limit_denominator(101), F(102, 101))
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self.assertEqual(F(0).limit_denominator(10000), F(0))
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def testConversions(self):
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self.assertTypedEquals(-1, math.trunc(R(-11, 10)))
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self.assertTypedEquals(-1, int(R(-11, 10)))
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self.assertTypedEquals(-1, math.trunc(F(-11, 10)))
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self.assertTypedEquals(-1, int(F(-11, 10)))
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self.assertEquals(False, bool(R(0, 1)))
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self.assertEquals(True, bool(R(3, 2)))
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self.assertTypedEquals(0.1, float(R(1, 10)))
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self.assertEquals(False, bool(F(0, 1)))
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self.assertEquals(True, bool(F(3, 2)))
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self.assertTypedEquals(0.1, float(F(1, 10)))
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# Check that __float__ isn't implemented by converting the
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# numerator and denominator to float before dividing.
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self.assertRaises(OverflowError, float, long('2'*400+'7'))
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self.assertAlmostEquals(2.0/3,
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float(R(long('2'*400+'7'), long('3'*400+'1'))))
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float(F(long('2'*400+'7'), long('3'*400+'1'))))
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self.assertTypedEquals(0.1+0j, complex(R(1,10)))
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self.assertTypedEquals(0.1+0j, complex(F(1,10)))
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def testArithmetic(self):
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self.assertEquals(R(1, 2), R(1, 10) + R(2, 5))
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self.assertEquals(R(-3, 10), R(1, 10) - R(2, 5))
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self.assertEquals(R(1, 25), R(1, 10) * R(2, 5))
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self.assertEquals(R(1, 4), R(1, 10) / R(2, 5))
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self.assertTypedEquals(2, R(9, 10) // R(2, 5))
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self.assertTypedEquals(10**23, R(10**23, 1) // R(1))
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self.assertEquals(R(2, 3), R(-7, 3) % R(3, 2))
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self.assertEquals(R(8, 27), R(2, 3) ** R(3))
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self.assertEquals(R(27, 8), R(2, 3) ** R(-3))
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self.assertTypedEquals(2.0, R(4) ** R(1, 2))
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self.assertEquals(F(1, 2), F(1, 10) + F(2, 5))
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self.assertEquals(F(-3, 10), F(1, 10) - F(2, 5))
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self.assertEquals(F(1, 25), F(1, 10) * F(2, 5))
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self.assertEquals(F(1, 4), F(1, 10) / F(2, 5))
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self.assertTypedEquals(2, F(9, 10) // F(2, 5))
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self.assertTypedEquals(10**23, F(10**23, 1) // F(1))
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self.assertEquals(F(2, 3), F(-7, 3) % F(3, 2))
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self.assertEquals(F(8, 27), F(2, 3) ** F(3))
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self.assertEquals(F(27, 8), F(2, 3) ** F(-3))
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self.assertTypedEquals(2.0, F(4) ** F(1, 2))
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# Will return 1j in 3.0:
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self.assertRaises(ValueError, pow, R(-1), R(1, 2))
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self.assertRaises(ValueError, pow, F(-1), F(1, 2))
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def testMixedArithmetic(self):
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self.assertTypedEquals(R(11, 10), R(1, 10) + 1)
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self.assertTypedEquals(1.1, R(1, 10) + 1.0)
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self.assertTypedEquals(1.1 + 0j, R(1, 10) + (1.0 + 0j))
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self.assertTypedEquals(R(11, 10), 1 + R(1, 10))
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self.assertTypedEquals(1.1, 1.0 + R(1, 10))
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self.assertTypedEquals(1.1 + 0j, (1.0 + 0j) + R(1, 10))
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self.assertTypedEquals(F(11, 10), F(1, 10) + 1)
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self.assertTypedEquals(1.1, F(1, 10) + 1.0)
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self.assertTypedEquals(1.1 + 0j, F(1, 10) + (1.0 + 0j))
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self.assertTypedEquals(F(11, 10), 1 + F(1, 10))
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self.assertTypedEquals(1.1, 1.0 + F(1, 10))
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self.assertTypedEquals(1.1 + 0j, (1.0 + 0j) + F(1, 10))
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self.assertTypedEquals(R(-9, 10), R(1, 10) - 1)
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self.assertTypedEquals(-0.9, R(1, 10) - 1.0)
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self.assertTypedEquals(-0.9 + 0j, R(1, 10) - (1.0 + 0j))
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self.assertTypedEquals(R(9, 10), 1 - R(1, 10))
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self.assertTypedEquals(0.9, 1.0 - R(1, 10))
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self.assertTypedEquals(0.9 + 0j, (1.0 + 0j) - R(1, 10))
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self.assertTypedEquals(F(-9, 10), F(1, 10) - 1)
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self.assertTypedEquals(-0.9, F(1, 10) - 1.0)
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self.assertTypedEquals(-0.9 + 0j, F(1, 10) - (1.0 + 0j))
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self.assertTypedEquals(F(9, 10), 1 - F(1, 10))
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self.assertTypedEquals(0.9, 1.0 - F(1, 10))
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self.assertTypedEquals(0.9 + 0j, (1.0 + 0j) - F(1, 10))
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self.assertTypedEquals(R(1, 10), R(1, 10) * 1)
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self.assertTypedEquals(0.1, R(1, 10) * 1.0)
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self.assertTypedEquals(0.1 + 0j, R(1, 10) * (1.0 + 0j))
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self.assertTypedEquals(R(1, 10), 1 * R(1, 10))
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self.assertTypedEquals(0.1, 1.0 * R(1, 10))
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self.assertTypedEquals(0.1 + 0j, (1.0 + 0j) * R(1, 10))
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self.assertTypedEquals(F(1, 10), F(1, 10) * 1)
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self.assertTypedEquals(0.1, F(1, 10) * 1.0)
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self.assertTypedEquals(0.1 + 0j, F(1, 10) * (1.0 + 0j))
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self.assertTypedEquals(F(1, 10), 1 * F(1, 10))
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self.assertTypedEquals(0.1, 1.0 * F(1, 10))
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self.assertTypedEquals(0.1 + 0j, (1.0 + 0j) * F(1, 10))
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self.assertTypedEquals(R(1, 10), R(1, 10) / 1)
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self.assertTypedEquals(0.1, R(1, 10) / 1.0)
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self.assertTypedEquals(0.1 + 0j, R(1, 10) / (1.0 + 0j))
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self.assertTypedEquals(R(10, 1), 1 / R(1, 10))
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self.assertTypedEquals(10.0, 1.0 / R(1, 10))
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self.assertTypedEquals(10.0 + 0j, (1.0 + 0j) / R(1, 10))
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self.assertTypedEquals(F(1, 10), F(1, 10) / 1)
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self.assertTypedEquals(0.1, F(1, 10) / 1.0)
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self.assertTypedEquals(0.1 + 0j, F(1, 10) / (1.0 + 0j))
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self.assertTypedEquals(F(10, 1), 1 / F(1, 10))
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self.assertTypedEquals(10.0, 1.0 / F(1, 10))
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self.assertTypedEquals(10.0 + 0j, (1.0 + 0j) / F(1, 10))
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self.assertTypedEquals(0, R(1, 10) // 1)
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self.assertTypedEquals(0.0, R(1, 10) // 1.0)
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self.assertTypedEquals(10, 1 // R(1, 10))
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self.assertTypedEquals(10**23, 10**22 // R(1, 10))
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self.assertTypedEquals(10.0, 1.0 // R(1, 10))
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self.assertTypedEquals(0, F(1, 10) // 1)
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self.assertTypedEquals(0.0, F(1, 10) // 1.0)
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self.assertTypedEquals(10, 1 // F(1, 10))
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self.assertTypedEquals(10**23, 10**22 // F(1, 10))
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self.assertTypedEquals(10.0, 1.0 // F(1, 10))
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self.assertTypedEquals(R(1, 10), R(1, 10) % 1)
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self.assertTypedEquals(0.1, R(1, 10) % 1.0)
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self.assertTypedEquals(R(0, 1), 1 % R(1, 10))
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self.assertTypedEquals(0.0, 1.0 % R(1, 10))
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||||
self.assertTypedEquals(F(1, 10), F(1, 10) % 1)
|
||||
self.assertTypedEquals(0.1, F(1, 10) % 1.0)
|
||||
self.assertTypedEquals(F(0, 1), 1 % F(1, 10))
|
||||
self.assertTypedEquals(0.0, 1.0 % F(1, 10))
|
||||
|
||||
# No need for divmod since we don't override it.
|
||||
|
||||
# ** has more interesting conversion rules.
|
||||
self.assertTypedEquals(R(100, 1), R(1, 10) ** -2)
|
||||
self.assertTypedEquals(R(100, 1), R(10, 1) ** 2)
|
||||
self.assertTypedEquals(0.1, R(1, 10) ** 1.0)
|
||||
self.assertTypedEquals(0.1 + 0j, R(1, 10) ** (1.0 + 0j))
|
||||
self.assertTypedEquals(4 , 2 ** R(2, 1))
|
||||
self.assertTypedEquals(F(100, 1), F(1, 10) ** -2)
|
||||
self.assertTypedEquals(F(100, 1), F(10, 1) ** 2)
|
||||
self.assertTypedEquals(0.1, F(1, 10) ** 1.0)
|
||||
self.assertTypedEquals(0.1 + 0j, F(1, 10) ** (1.0 + 0j))
|
||||
self.assertTypedEquals(4 , 2 ** F(2, 1))
|
||||
# Will return 1j in 3.0:
|
||||
self.assertRaises(ValueError, pow, (-1), R(1, 2))
|
||||
self.assertTypedEquals(R(1, 4) , 2 ** R(-2, 1))
|
||||
self.assertTypedEquals(2.0 , 4 ** R(1, 2))
|
||||
self.assertTypedEquals(0.25, 2.0 ** R(-2, 1))
|
||||
self.assertTypedEquals(1.0 + 0j, (1.0 + 0j) ** R(1, 10))
|
||||
self.assertRaises(ValueError, pow, (-1), F(1, 2))
|
||||
self.assertTypedEquals(F(1, 4) , 2 ** F(-2, 1))
|
||||
self.assertTypedEquals(2.0 , 4 ** F(1, 2))
|
||||
self.assertTypedEquals(0.25, 2.0 ** F(-2, 1))
|
||||
self.assertTypedEquals(1.0 + 0j, (1.0 + 0j) ** F(1, 10))
|
||||
|
||||
def testMixingWithDecimal(self):
|
||||
# Decimal refuses mixed comparisons.
|
||||
self.assertRaisesMessage(
|
||||
TypeError,
|
||||
"unsupported operand type(s) for +: 'Fraction' and 'Decimal'",
|
||||
operator.add, R(3,11), Decimal('3.1415926'))
|
||||
self.assertNotEquals(R(5, 2), Decimal('2.5'))
|
||||
operator.add, F(3,11), Decimal('3.1415926'))
|
||||
self.assertNotEquals(F(5, 2), Decimal('2.5'))
|
||||
|
||||
def testComparisons(self):
|
||||
self.assertTrue(R(1, 2) < R(2, 3))
|
||||
self.assertFalse(R(1, 2) < R(1, 2))
|
||||
self.assertTrue(R(1, 2) <= R(2, 3))
|
||||
self.assertTrue(R(1, 2) <= R(1, 2))
|
||||
self.assertFalse(R(2, 3) <= R(1, 2))
|
||||
self.assertTrue(R(1, 2) == R(1, 2))
|
||||
self.assertFalse(R(1, 2) == R(1, 3))
|
||||
self.assertFalse(R(1, 2) != R(1, 2))
|
||||
self.assertTrue(R(1, 2) != R(1, 3))
|
||||
self.assertTrue(F(1, 2) < F(2, 3))
|
||||
self.assertFalse(F(1, 2) < F(1, 2))
|
||||
self.assertTrue(F(1, 2) <= F(2, 3))
|
||||
self.assertTrue(F(1, 2) <= F(1, 2))
|
||||
self.assertFalse(F(2, 3) <= F(1, 2))
|
||||
self.assertTrue(F(1, 2) == F(1, 2))
|
||||
self.assertFalse(F(1, 2) == F(1, 3))
|
||||
self.assertFalse(F(1, 2) != F(1, 2))
|
||||
self.assertTrue(F(1, 2) != F(1, 3))
|
||||
|
||||
def testMixedLess(self):
|
||||
self.assertTrue(2 < R(5, 2))
|
||||
self.assertFalse(2 < R(4, 2))
|
||||
self.assertTrue(R(5, 2) < 3)
|
||||
self.assertFalse(R(4, 2) < 2)
|
||||
self.assertTrue(2 < F(5, 2))
|
||||
self.assertFalse(2 < F(4, 2))
|
||||
self.assertTrue(F(5, 2) < 3)
|
||||
self.assertFalse(F(4, 2) < 2)
|
||||
|
||||
self.assertTrue(R(1, 2) < 0.6)
|
||||
self.assertFalse(R(1, 2) < 0.4)
|
||||
self.assertTrue(0.4 < R(1, 2))
|
||||
self.assertFalse(0.5 < R(1, 2))
|
||||
self.assertTrue(F(1, 2) < 0.6)
|
||||
self.assertFalse(F(1, 2) < 0.4)
|
||||
self.assertTrue(0.4 < F(1, 2))
|
||||
self.assertFalse(0.5 < F(1, 2))
|
||||
|
||||
def testMixedLessEqual(self):
|
||||
self.assertTrue(0.5 <= R(1, 2))
|
||||
self.assertFalse(0.6 <= R(1, 2))
|
||||
self.assertTrue(R(1, 2) <= 0.5)
|
||||
self.assertFalse(R(1, 2) <= 0.4)
|
||||
self.assertTrue(2 <= R(4, 2))
|
||||
self.assertFalse(2 <= R(3, 2))
|
||||
self.assertTrue(R(4, 2) <= 2)
|
||||
self.assertFalse(R(5, 2) <= 2)
|
||||
self.assertTrue(0.5 <= F(1, 2))
|
||||
self.assertFalse(0.6 <= F(1, 2))
|
||||
self.assertTrue(F(1, 2) <= 0.5)
|
||||
self.assertFalse(F(1, 2) <= 0.4)
|
||||
self.assertTrue(2 <= F(4, 2))
|
||||
self.assertFalse(2 <= F(3, 2))
|
||||
self.assertTrue(F(4, 2) <= 2)
|
||||
self.assertFalse(F(5, 2) <= 2)
|
||||
|
||||
def testBigFloatComparisons(self):
|
||||
# Because 10**23 can't be represented exactly as a float:
|
||||
self.assertFalse(R(10**23) == float(10**23))
|
||||
self.assertFalse(F(10**23) == float(10**23))
|
||||
# The first test demonstrates why these are important.
|
||||
self.assertFalse(1e23 < float(R(math.trunc(1e23) + 1)))
|
||||
self.assertTrue(1e23 < R(math.trunc(1e23) + 1))
|
||||
self.assertFalse(1e23 <= R(math.trunc(1e23) - 1))
|
||||
self.assertTrue(1e23 > R(math.trunc(1e23) - 1))
|
||||
self.assertFalse(1e23 >= R(math.trunc(1e23) + 1))
|
||||
self.assertFalse(1e23 < float(F(math.trunc(1e23) + 1)))
|
||||
self.assertTrue(1e23 < F(math.trunc(1e23) + 1))
|
||||
self.assertFalse(1e23 <= F(math.trunc(1e23) - 1))
|
||||
self.assertTrue(1e23 > F(math.trunc(1e23) - 1))
|
||||
self.assertFalse(1e23 >= F(math.trunc(1e23) + 1))
|
||||
|
||||
def testBigComplexComparisons(self):
|
||||
self.assertFalse(R(10**23) == complex(10**23))
|
||||
self.assertTrue(R(10**23) > complex(10**23))
|
||||
self.assertFalse(R(10**23) <= complex(10**23))
|
||||
self.assertFalse(F(10**23) == complex(10**23))
|
||||
self.assertTrue(F(10**23) > complex(10**23))
|
||||
self.assertFalse(F(10**23) <= complex(10**23))
|
||||
|
||||
def testMixedEqual(self):
|
||||
self.assertTrue(0.5 == R(1, 2))
|
||||
self.assertFalse(0.6 == R(1, 2))
|
||||
self.assertTrue(R(1, 2) == 0.5)
|
||||
self.assertFalse(R(1, 2) == 0.4)
|
||||
self.assertTrue(2 == R(4, 2))
|
||||
self.assertFalse(2 == R(3, 2))
|
||||
self.assertTrue(R(4, 2) == 2)
|
||||
self.assertFalse(R(5, 2) == 2)
|
||||
self.assertTrue(0.5 == F(1, 2))
|
||||
self.assertFalse(0.6 == F(1, 2))
|
||||
self.assertTrue(F(1, 2) == 0.5)
|
||||
self.assertFalse(F(1, 2) == 0.4)
|
||||
self.assertTrue(2 == F(4, 2))
|
||||
self.assertFalse(2 == F(3, 2))
|
||||
self.assertTrue(F(4, 2) == 2)
|
||||
self.assertFalse(F(5, 2) == 2)
|
||||
|
||||
def testStringification(self):
|
||||
self.assertEquals("Fraction(7, 3)", repr(R(7, 3)))
|
||||
self.assertEquals("7/3", str(R(7, 3)))
|
||||
self.assertEquals("7", str(R(7, 1)))
|
||||
self.assertEquals("Fraction(7, 3)", repr(F(7, 3)))
|
||||
self.assertEquals("7/3", str(F(7, 3)))
|
||||
self.assertEquals("7", str(F(7, 1)))
|
||||
|
||||
def testHash(self):
|
||||
self.assertEquals(hash(2.5), hash(R(5, 2)))
|
||||
self.assertEquals(hash(10**50), hash(R(10**50)))
|
||||
self.assertNotEquals(hash(float(10**23)), hash(R(10**23)))
|
||||
self.assertEquals(hash(2.5), hash(F(5, 2)))
|
||||
self.assertEquals(hash(10**50), hash(F(10**50)))
|
||||
self.assertNotEquals(hash(float(10**23)), hash(F(10**23)))
|
||||
|
||||
def testApproximatePi(self):
|
||||
# Algorithm borrowed from
|
||||
# http://docs.python.org/lib/decimal-recipes.html
|
||||
three = R(3)
|
||||
three = F(3)
|
||||
lasts, t, s, n, na, d, da = 0, three, 3, 1, 0, 0, 24
|
||||
while abs(s - lasts) > R(1, 10**9):
|
||||
while abs(s - lasts) > F(1, 10**9):
|
||||
lasts = s
|
||||
n, na = n+na, na+8
|
||||
d, da = d+da, da+32
|
||||
|
|
@ -375,9 +375,9 @@ class FractionTest(unittest.TestCase):
|
|||
def testApproximateCos1(self):
|
||||
# Algorithm borrowed from
|
||||
# http://docs.python.org/lib/decimal-recipes.html
|
||||
x = R(1)
|
||||
i, lasts, s, fact, num, sign = 0, 0, R(1), 1, 1, 1
|
||||
while abs(s - lasts) > R(1, 10**9):
|
||||
x = F(1)
|
||||
i, lasts, s, fact, num, sign = 0, 0, F(1), 1, 1, 1
|
||||
while abs(s - lasts) > F(1, 10**9):
|
||||
lasts = s
|
||||
i += 2
|
||||
fact *= i * (i-1)
|
||||
|
|
@ -387,7 +387,7 @@ class FractionTest(unittest.TestCase):
|
|||
self.assertAlmostEquals(math.cos(1), s)
|
||||
|
||||
def test_copy_deepcopy_pickle(self):
|
||||
r = R(13, 7)
|
||||
r = F(13, 7)
|
||||
self.assertEqual(r, loads(dumps(r)))
|
||||
self.assertEqual(id(r), id(copy(r)))
|
||||
self.assertEqual(id(r), id(deepcopy(r)))
|
||||
|
|
|
|||
Loading…
Reference in New Issue