mirror of https://github.com/python/cpython
401 lines
16 KiB
Python
401 lines
16 KiB
Python
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.assertTrue(isinstance(x, int))
|
|
# should return long
|
|
self.assertEqual(int(s[1:]), sys.maxint+1)
|
|
|
|
# should return long
|
|
x = int(1e100)
|
|
self.assertTrue(isinstance(x, long))
|
|
x = int(-1e100)
|
|
self.assertTrue(isinstance(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.assertTrue(isinstance(x, long))
|
|
|
|
if have_unicode:
|
|
x = int(unichr(0x661) * 600)
|
|
self.assertTrue(isinstance(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)
|
|
|
|
# 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.assertEquals(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()
|