[Jython-checkins] jython: from:
frank.wierzbicki
jython-checkins at python.org
Wed Apr 18 23:00:54 CEST 2012
http://hg.python.org/jython/rev/c284f3bea4d1
changeset: 6604:c284f3bea4d1
user: Frank Wierzbicki <fwierzbicki at gmail.com>
date: Wed Apr 18 13:52:59 2012 -0700
summary:
from:
http://hg.python.org/cpython/Lib/test/test_int.py@22db03646d9b
files:
Lib/test/test_int.py | 406 +++++++++++++++++++++++++++++++
1 files changed, 406 insertions(+), 0 deletions(-)
diff --git a/Lib/test/test_int.py b/Lib/test/test_int.py
new file mode 100644
--- /dev/null
+++ b/Lib/test/test_int.py
@@ -0,0 +1,406 @@
+import sys
+
+import unittest
+from test.test_support import run_unittest, have_unicode
+import math
+
+L = [
+ ('0', 0),
+ ('1', 1),
+ ('9', 9),
+ ('10', 10),
+ ('99', 99),
+ ('100', 100),
+ ('314', 314),
+ (' 314', 314),
+ ('314 ', 314),
+ (' \t\t 314 \t\t ', 314),
+ (repr(sys.maxint), sys.maxint),
+ (' 1x', ValueError),
+ (' 1 ', 1),
+ (' 1\02 ', ValueError),
+ ('', ValueError),
+ (' ', ValueError),
+ (' \t\t ', ValueError)
+]
+if have_unicode:
+ L += [
+ (unicode('0'), 0),
+ (unicode('1'), 1),
+ (unicode('9'), 9),
+ (unicode('10'), 10),
+ (unicode('99'), 99),
+ (unicode('100'), 100),
+ (unicode('314'), 314),
+ (unicode(' 314'), 314),
+ (unicode('\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
+ (unicode(' \t\t 314 \t\t '), 314),
+ (unicode(' 1x'), ValueError),
+ (unicode(' 1 '), 1),
+ (unicode(' 1\02 '), ValueError),
+ (unicode(''), ValueError),
+ (unicode(' '), ValueError),
+ (unicode(' \t\t '), ValueError),
+ (unichr(0x200), ValueError),
+]
+
+class IntTestCases(unittest.TestCase):
+
+ def test_basic(self):
+ self.assertEqual(int(314), 314)
+ self.assertEqual(int(3.14), 3)
+ self.assertEqual(int(314L), 314)
+ # Check that conversion from float truncates towards zero
+ self.assertEqual(int(-3.14), -3)
+ self.assertEqual(int(3.9), 3)
+ self.assertEqual(int(-3.9), -3)
+ self.assertEqual(int(3.5), 3)
+ self.assertEqual(int(-3.5), -3)
+ # Different base:
+ self.assertEqual(int("10",16), 16L)
+ if have_unicode:
+ self.assertEqual(int(unicode("10"),16), 16L)
+ # Test conversion from strings and various anomalies
+ for s, v in L:
+ for sign in "", "+", "-":
+ for prefix in "", " ", "\t", " \t\t ":
+ ss = prefix + sign + s
+ vv = v
+ if sign == "-" and v is not ValueError:
+ vv = -v
+ try:
+ self.assertEqual(int(ss), vv)
+ except v:
+ pass
+
+ s = repr(-1-sys.maxint)
+ x = int(s)
+ self.assertEqual(x+1, -sys.maxint)
+ self.assertIsInstance(x, int)
+ # should return long
+ self.assertEqual(int(s[1:]), sys.maxint+1)
+
+ # should return long
+ x = int(1e100)
+ self.assertIsInstance(x, long)
+ x = int(-1e100)
+ self.assertIsInstance(x, long)
+
+
+ # SF bug 434186: 0x80000000/2 != 0x80000000>>1.
+ # Worked by accident in Windows release build, but failed in debug build.
+ # Failed in all Linux builds.
+ x = -1-sys.maxint
+ self.assertEqual(x >> 1, x//2)
+
+ self.assertRaises(ValueError, int, '123\0')
+ self.assertRaises(ValueError, int, '53', 40)
+
+ # SF bug 1545497: embedded NULs were not detected with
+ # explicit base
+ self.assertRaises(ValueError, int, '123\0', 10)
+ self.assertRaises(ValueError, int, '123\x00 245', 20)
+
+ x = int('1' * 600)
+ self.assertIsInstance(x, long)
+
+ if have_unicode:
+ x = int(unichr(0x661) * 600)
+ self.assertIsInstance(x, long)
+
+ self.assertRaises(TypeError, int, 1, 12)
+
+ self.assertEqual(int('0123', 0), 83)
+ self.assertEqual(int('0x123', 16), 291)
+
+ # Bug 1679: "0x" is not a valid hex literal
+ self.assertRaises(ValueError, int, "0x", 16)
+ self.assertRaises(ValueError, int, "0x", 0)
+
+ self.assertRaises(ValueError, int, "0o", 8)
+ self.assertRaises(ValueError, int, "0o", 0)
+
+ self.assertRaises(ValueError, int, "0b", 2)
+ self.assertRaises(ValueError, int, "0b", 0)
+
+
+ # SF bug 1334662: int(string, base) wrong answers
+ # Various representations of 2**32 evaluated to 0
+ # rather than 2**32 in previous versions
+
+ self.assertEqual(int('100000000000000000000000000000000', 2), 4294967296L)
+ self.assertEqual(int('102002022201221111211', 3), 4294967296L)
+ self.assertEqual(int('10000000000000000', 4), 4294967296L)
+ self.assertEqual(int('32244002423141', 5), 4294967296L)
+ self.assertEqual(int('1550104015504', 6), 4294967296L)
+ self.assertEqual(int('211301422354', 7), 4294967296L)
+ self.assertEqual(int('40000000000', 8), 4294967296L)
+ self.assertEqual(int('12068657454', 9), 4294967296L)
+ self.assertEqual(int('4294967296', 10), 4294967296L)
+ self.assertEqual(int('1904440554', 11), 4294967296L)
+ self.assertEqual(int('9ba461594', 12), 4294967296L)
+ self.assertEqual(int('535a79889', 13), 4294967296L)
+ self.assertEqual(int('2ca5b7464', 14), 4294967296L)
+ self.assertEqual(int('1a20dcd81', 15), 4294967296L)
+ self.assertEqual(int('100000000', 16), 4294967296L)
+ self.assertEqual(int('a7ffda91', 17), 4294967296L)
+ self.assertEqual(int('704he7g4', 18), 4294967296L)
+ self.assertEqual(int('4f5aff66', 19), 4294967296L)
+ self.assertEqual(int('3723ai4g', 20), 4294967296L)
+ self.assertEqual(int('281d55i4', 21), 4294967296L)
+ self.assertEqual(int('1fj8b184', 22), 4294967296L)
+ self.assertEqual(int('1606k7ic', 23), 4294967296L)
+ self.assertEqual(int('mb994ag', 24), 4294967296L)
+ self.assertEqual(int('hek2mgl', 25), 4294967296L)
+ self.assertEqual(int('dnchbnm', 26), 4294967296L)
+ self.assertEqual(int('b28jpdm', 27), 4294967296L)
+ self.assertEqual(int('8pfgih4', 28), 4294967296L)
+ self.assertEqual(int('76beigg', 29), 4294967296L)
+ self.assertEqual(int('5qmcpqg', 30), 4294967296L)
+ self.assertEqual(int('4q0jto4', 31), 4294967296L)
+ self.assertEqual(int('4000000', 32), 4294967296L)
+ self.assertEqual(int('3aokq94', 33), 4294967296L)
+ self.assertEqual(int('2qhxjli', 34), 4294967296L)
+ self.assertEqual(int('2br45qb', 35), 4294967296L)
+ self.assertEqual(int('1z141z4', 36), 4294967296L)
+
+ # tests with base 0
+ # this fails on 3.0, but in 2.x the old octal syntax is allowed
+ self.assertEqual(int(' 0123 ', 0), 83)
+ self.assertEqual(int(' 0123 ', 0), 83)
+ self.assertEqual(int('000', 0), 0)
+ self.assertEqual(int('0o123', 0), 83)
+ self.assertEqual(int('0x123', 0), 291)
+ self.assertEqual(int('0b100', 0), 4)
+ self.assertEqual(int(' 0O123 ', 0), 83)
+ self.assertEqual(int(' 0X123 ', 0), 291)
+ self.assertEqual(int(' 0B100 ', 0), 4)
+ self.assertEqual(int('0', 0), 0)
+ self.assertEqual(int('+0', 0), 0)
+ self.assertEqual(int('-0', 0), 0)
+ self.assertEqual(int('00', 0), 0)
+ self.assertRaises(ValueError, int, '08', 0)
+ self.assertRaises(ValueError, int, '-012395', 0)
+
+ # without base still base 10
+ self.assertEqual(int('0123'), 123)
+ self.assertEqual(int('0123', 10), 123)
+
+ # tests with prefix and base != 0
+ self.assertEqual(int('0x123', 16), 291)
+ self.assertEqual(int('0o123', 8), 83)
+ self.assertEqual(int('0b100', 2), 4)
+ self.assertEqual(int('0X123', 16), 291)
+ self.assertEqual(int('0O123', 8), 83)
+ self.assertEqual(int('0B100', 2), 4)
+
+ # the code has special checks for the first character after the
+ # type prefix
+ self.assertRaises(ValueError, int, '0b2', 2)
+ self.assertRaises(ValueError, int, '0b02', 2)
+ self.assertRaises(ValueError, int, '0B2', 2)
+ self.assertRaises(ValueError, int, '0B02', 2)
+ self.assertRaises(ValueError, int, '0o8', 8)
+ self.assertRaises(ValueError, int, '0o08', 8)
+ self.assertRaises(ValueError, int, '0O8', 8)
+ self.assertRaises(ValueError, int, '0O08', 8)
+ self.assertRaises(ValueError, int, '0xg', 16)
+ self.assertRaises(ValueError, int, '0x0g', 16)
+ self.assertRaises(ValueError, int, '0Xg', 16)
+ self.assertRaises(ValueError, int, '0X0g', 16)
+
+ # SF bug 1334662: int(string, base) wrong answers
+ # Checks for proper evaluation of 2**32 + 1
+ self.assertEqual(int('100000000000000000000000000000001', 2), 4294967297L)
+ self.assertEqual(int('102002022201221111212', 3), 4294967297L)
+ self.assertEqual(int('10000000000000001', 4), 4294967297L)
+ self.assertEqual(int('32244002423142', 5), 4294967297L)
+ self.assertEqual(int('1550104015505', 6), 4294967297L)
+ self.assertEqual(int('211301422355', 7), 4294967297L)
+ self.assertEqual(int('40000000001', 8), 4294967297L)
+ self.assertEqual(int('12068657455', 9), 4294967297L)
+ self.assertEqual(int('4294967297', 10), 4294967297L)
+ self.assertEqual(int('1904440555', 11), 4294967297L)
+ self.assertEqual(int('9ba461595', 12), 4294967297L)
+ self.assertEqual(int('535a7988a', 13), 4294967297L)
+ self.assertEqual(int('2ca5b7465', 14), 4294967297L)
+ self.assertEqual(int('1a20dcd82', 15), 4294967297L)
+ self.assertEqual(int('100000001', 16), 4294967297L)
+ self.assertEqual(int('a7ffda92', 17), 4294967297L)
+ self.assertEqual(int('704he7g5', 18), 4294967297L)
+ self.assertEqual(int('4f5aff67', 19), 4294967297L)
+ self.assertEqual(int('3723ai4h', 20), 4294967297L)
+ self.assertEqual(int('281d55i5', 21), 4294967297L)
+ self.assertEqual(int('1fj8b185', 22), 4294967297L)
+ self.assertEqual(int('1606k7id', 23), 4294967297L)
+ self.assertEqual(int('mb994ah', 24), 4294967297L)
+ self.assertEqual(int('hek2mgm', 25), 4294967297L)
+ self.assertEqual(int('dnchbnn', 26), 4294967297L)
+ self.assertEqual(int('b28jpdn', 27), 4294967297L)
+ self.assertEqual(int('8pfgih5', 28), 4294967297L)
+ self.assertEqual(int('76beigh', 29), 4294967297L)
+ self.assertEqual(int('5qmcpqh', 30), 4294967297L)
+ self.assertEqual(int('4q0jto5', 31), 4294967297L)
+ self.assertEqual(int('4000001', 32), 4294967297L)
+ self.assertEqual(int('3aokq95', 33), 4294967297L)
+ self.assertEqual(int('2qhxjlj', 34), 4294967297L)
+ self.assertEqual(int('2br45qc', 35), 4294967297L)
+ self.assertEqual(int('1z141z5', 36), 4294967297L)
+
+ def test_bit_length(self):
+ tiny = 1e-10
+ for x in xrange(-65000, 65000):
+ k = x.bit_length()
+ # Check equivalence with Python version
+ self.assertEqual(k, len(bin(x).lstrip('-0b')))
+ # Behaviour as specified in the docs
+ if x != 0:
+ self.assertTrue(2**(k-1) <= abs(x) < 2**k)
+ else:
+ self.assertEqual(k, 0)
+ # Alternative definition: x.bit_length() == 1 + floor(log_2(x))
+ if x != 0:
+ # When x is an exact power of 2, numeric errors can
+ # cause floor(log(x)/log(2)) to be one too small; for
+ # small x this can be fixed by adding a small quantity
+ # to the quotient before taking the floor.
+ self.assertEqual(k, 1 + math.floor(
+ math.log(abs(x))/math.log(2) + tiny))
+
+ self.assertEqual((0).bit_length(), 0)
+ self.assertEqual((1).bit_length(), 1)
+ self.assertEqual((-1).bit_length(), 1)
+ self.assertEqual((2).bit_length(), 2)
+ self.assertEqual((-2).bit_length(), 2)
+ for i in [2, 3, 15, 16, 17, 31, 32, 33, 63, 64]:
+ a = 2**i
+ self.assertEqual((a-1).bit_length(), i)
+ self.assertEqual((1-a).bit_length(), i)
+ self.assertEqual((a).bit_length(), i+1)
+ self.assertEqual((-a).bit_length(), i+1)
+ self.assertEqual((a+1).bit_length(), i+1)
+ self.assertEqual((-a-1).bit_length(), i+1)
+
+ @unittest.skipUnless(float.__getformat__("double").startswith("IEEE"),
+ "test requires IEEE 754 doubles")
+ def test_float_conversion(self):
+ # values exactly representable as floats
+ exact_values = [-2, -1, 0, 1, 2, 2**52, 2**53-1, 2**53, 2**53+2,
+ 2**53+4, 2**54-4, 2**54-2, 2**63, -2**63, 2**64,
+ -2**64, 10**20, 10**21, 10**22]
+ for value in exact_values:
+ self.assertEqual(int(float(int(value))), value)
+
+ # test round-half-to-even
+ self.assertEqual(int(float(2**53+1)), 2**53)
+ self.assertEqual(int(float(2**53+2)), 2**53+2)
+ self.assertEqual(int(float(2**53+3)), 2**53+4)
+ self.assertEqual(int(float(2**53+5)), 2**53+4)
+ self.assertEqual(int(float(2**53+6)), 2**53+6)
+ self.assertEqual(int(float(2**53+7)), 2**53+8)
+
+ self.assertEqual(int(float(-2**53-1)), -2**53)
+ self.assertEqual(int(float(-2**53-2)), -2**53-2)
+ self.assertEqual(int(float(-2**53-3)), -2**53-4)
+ self.assertEqual(int(float(-2**53-5)), -2**53-4)
+ self.assertEqual(int(float(-2**53-6)), -2**53-6)
+ self.assertEqual(int(float(-2**53-7)), -2**53-8)
+
+ self.assertEqual(int(float(2**54-2)), 2**54-2)
+ self.assertEqual(int(float(2**54-1)), 2**54)
+ self.assertEqual(int(float(2**54+2)), 2**54)
+ self.assertEqual(int(float(2**54+3)), 2**54+4)
+ self.assertEqual(int(float(2**54+5)), 2**54+4)
+ self.assertEqual(int(float(2**54+6)), 2**54+8)
+ self.assertEqual(int(float(2**54+10)), 2**54+8)
+ self.assertEqual(int(float(2**54+11)), 2**54+12)
+
+ def test_intconversion(self):
+ # Test __int__()
+ class ClassicMissingMethods:
+ pass
+ self.assertRaises(AttributeError, int, ClassicMissingMethods())
+
+ class MissingMethods(object):
+ pass
+ self.assertRaises(TypeError, int, MissingMethods())
+
+ class Foo0:
+ def __int__(self):
+ return 42
+
+ class Foo1(object):
+ def __int__(self):
+ return 42
+
+ class Foo2(int):
+ def __int__(self):
+ return 42
+
+ class Foo3(int):
+ def __int__(self):
+ return self
+
+ class Foo4(int):
+ def __int__(self):
+ return 42L
+
+ class Foo5(int):
+ def __int__(self):
+ return 42.
+
+ self.assertEqual(int(Foo0()), 42)
+ self.assertEqual(int(Foo1()), 42)
+ self.assertEqual(int(Foo2()), 42)
+ self.assertEqual(int(Foo3()), 0)
+ self.assertEqual(int(Foo4()), 42L)
+ self.assertRaises(TypeError, int, Foo5())
+
+ class Classic:
+ pass
+ for base in (object, Classic):
+ class IntOverridesTrunc(base):
+ def __int__(self):
+ return 42
+ def __trunc__(self):
+ return -12
+ self.assertEqual(int(IntOverridesTrunc()), 42)
+
+ class JustTrunc(base):
+ def __trunc__(self):
+ return 42
+ self.assertEqual(int(JustTrunc()), 42)
+
+ for trunc_result_base in (object, Classic):
+ class Integral(trunc_result_base):
+ def __int__(self):
+ return 42
+
+ class TruncReturnsNonInt(base):
+ def __trunc__(self):
+ return Integral()
+ self.assertEqual(int(TruncReturnsNonInt()), 42)
+
+ class NonIntegral(trunc_result_base):
+ def __trunc__(self):
+ # Check that we avoid infinite recursion.
+ return NonIntegral()
+
+ class TruncReturnsNonIntegral(base):
+ def __trunc__(self):
+ return NonIntegral()
+ try:
+ int(TruncReturnsNonIntegral())
+ except TypeError as e:
+ self.assertEqual(str(e),
+ "__trunc__ returned non-Integral"
+ " (type NonIntegral)")
+ else:
+ self.fail("Failed to raise TypeError with %s" %
+ ((base, trunc_result_base),))
+
+def test_main():
+ run_unittest(IntTestCases)
+
+if __name__ == "__main__":
+ test_main()
--
Repository URL: http://hg.python.org/jython
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