456 lines
17 KiB
Python
456 lines
17 KiB
Python
import sys
|
|
|
|
import unittest
|
|
from test import support
|
|
|
|
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.maxsize), sys.maxsize),
|
|
(' 1x', ValueError),
|
|
(' 1 ', 1),
|
|
(' 1\02 ', ValueError),
|
|
('', ValueError),
|
|
(' ', ValueError),
|
|
(' \t\t ', ValueError),
|
|
("\u0200", ValueError)
|
|
]
|
|
|
|
class IntTestCases(unittest.TestCase):
|
|
|
|
def test_basic(self):
|
|
self.assertEqual(int(314), 314)
|
|
self.assertEqual(int(3.14), 3)
|
|
# 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)
|
|
self.assertEqual(int("-3"), -3)
|
|
self.assertEqual(int(" -3 "), -3)
|
|
self.assertEqual(int("\N{EM SPACE}-3\N{EN SPACE}"), -3)
|
|
# Different base:
|
|
self.assertEqual(int("10",16), 16)
|
|
# 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 ValueError:
|
|
pass
|
|
|
|
s = repr(-1-sys.maxsize)
|
|
x = int(s)
|
|
self.assertEqual(x+1, -sys.maxsize)
|
|
self.assertIsInstance(x, int)
|
|
# should return int
|
|
self.assertEqual(int(s[1:]), sys.maxsize+1)
|
|
|
|
# should return int
|
|
x = int(1e100)
|
|
self.assertIsInstance(x, int)
|
|
x = int(-1e100)
|
|
self.assertIsInstance(x, int)
|
|
|
|
|
|
# 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.maxsize
|
|
self.assertEqual(x >> 1, x//2)
|
|
|
|
x = int('1' * 600)
|
|
self.assertIsInstance(x, int)
|
|
|
|
|
|
self.assertRaises(TypeError, int, 1, 12)
|
|
|
|
self.assertEqual(int('0o123', 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), 4294967296)
|
|
self.assertEqual(int('102002022201221111211', 3), 4294967296)
|
|
self.assertEqual(int('10000000000000000', 4), 4294967296)
|
|
self.assertEqual(int('32244002423141', 5), 4294967296)
|
|
self.assertEqual(int('1550104015504', 6), 4294967296)
|
|
self.assertEqual(int('211301422354', 7), 4294967296)
|
|
self.assertEqual(int('40000000000', 8), 4294967296)
|
|
self.assertEqual(int('12068657454', 9), 4294967296)
|
|
self.assertEqual(int('4294967296', 10), 4294967296)
|
|
self.assertEqual(int('1904440554', 11), 4294967296)
|
|
self.assertEqual(int('9ba461594', 12), 4294967296)
|
|
self.assertEqual(int('535a79889', 13), 4294967296)
|
|
self.assertEqual(int('2ca5b7464', 14), 4294967296)
|
|
self.assertEqual(int('1a20dcd81', 15), 4294967296)
|
|
self.assertEqual(int('100000000', 16), 4294967296)
|
|
self.assertEqual(int('a7ffda91', 17), 4294967296)
|
|
self.assertEqual(int('704he7g4', 18), 4294967296)
|
|
self.assertEqual(int('4f5aff66', 19), 4294967296)
|
|
self.assertEqual(int('3723ai4g', 20), 4294967296)
|
|
self.assertEqual(int('281d55i4', 21), 4294967296)
|
|
self.assertEqual(int('1fj8b184', 22), 4294967296)
|
|
self.assertEqual(int('1606k7ic', 23), 4294967296)
|
|
self.assertEqual(int('mb994ag', 24), 4294967296)
|
|
self.assertEqual(int('hek2mgl', 25), 4294967296)
|
|
self.assertEqual(int('dnchbnm', 26), 4294967296)
|
|
self.assertEqual(int('b28jpdm', 27), 4294967296)
|
|
self.assertEqual(int('8pfgih4', 28), 4294967296)
|
|
self.assertEqual(int('76beigg', 29), 4294967296)
|
|
self.assertEqual(int('5qmcpqg', 30), 4294967296)
|
|
self.assertEqual(int('4q0jto4', 31), 4294967296)
|
|
self.assertEqual(int('4000000', 32), 4294967296)
|
|
self.assertEqual(int('3aokq94', 33), 4294967296)
|
|
self.assertEqual(int('2qhxjli', 34), 4294967296)
|
|
self.assertEqual(int('2br45qb', 35), 4294967296)
|
|
self.assertEqual(int('1z141z4', 36), 4294967296)
|
|
|
|
# tests with base 0
|
|
# this fails on 3.0, but in 2.x the old octal syntax is allowed
|
|
self.assertEqual(int(' 0o123 ', 0), 83)
|
|
self.assertEqual(int(' 0o123 ', 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), 4294967297)
|
|
self.assertEqual(int('102002022201221111212', 3), 4294967297)
|
|
self.assertEqual(int('10000000000000001', 4), 4294967297)
|
|
self.assertEqual(int('32244002423142', 5), 4294967297)
|
|
self.assertEqual(int('1550104015505', 6), 4294967297)
|
|
self.assertEqual(int('211301422355', 7), 4294967297)
|
|
self.assertEqual(int('40000000001', 8), 4294967297)
|
|
self.assertEqual(int('12068657455', 9), 4294967297)
|
|
self.assertEqual(int('4294967297', 10), 4294967297)
|
|
self.assertEqual(int('1904440555', 11), 4294967297)
|
|
self.assertEqual(int('9ba461595', 12), 4294967297)
|
|
self.assertEqual(int('535a7988a', 13), 4294967297)
|
|
self.assertEqual(int('2ca5b7465', 14), 4294967297)
|
|
self.assertEqual(int('1a20dcd82', 15), 4294967297)
|
|
self.assertEqual(int('100000001', 16), 4294967297)
|
|
self.assertEqual(int('a7ffda92', 17), 4294967297)
|
|
self.assertEqual(int('704he7g5', 18), 4294967297)
|
|
self.assertEqual(int('4f5aff67', 19), 4294967297)
|
|
self.assertEqual(int('3723ai4h', 20), 4294967297)
|
|
self.assertEqual(int('281d55i5', 21), 4294967297)
|
|
self.assertEqual(int('1fj8b185', 22), 4294967297)
|
|
self.assertEqual(int('1606k7id', 23), 4294967297)
|
|
self.assertEqual(int('mb994ah', 24), 4294967297)
|
|
self.assertEqual(int('hek2mgm', 25), 4294967297)
|
|
self.assertEqual(int('dnchbnn', 26), 4294967297)
|
|
self.assertEqual(int('b28jpdn', 27), 4294967297)
|
|
self.assertEqual(int('8pfgih5', 28), 4294967297)
|
|
self.assertEqual(int('76beigh', 29), 4294967297)
|
|
self.assertEqual(int('5qmcpqh', 30), 4294967297)
|
|
self.assertEqual(int('4q0jto5', 31), 4294967297)
|
|
self.assertEqual(int('4000001', 32), 4294967297)
|
|
self.assertEqual(int('3aokq95', 33), 4294967297)
|
|
self.assertEqual(int('2qhxjlj', 34), 4294967297)
|
|
self.assertEqual(int('2br45qc', 35), 4294967297)
|
|
self.assertEqual(int('1z141z5', 36), 4294967297)
|
|
|
|
@support.cpython_only
|
|
def test_small_ints(self):
|
|
# Bug #3236: Return small longs from PyLong_FromString
|
|
self.assertIs(int('10'), 10)
|
|
self.assertIs(int('-1'), -1)
|
|
self.assertIs(int(b'10'), 10)
|
|
self.assertIs(int(b'-1'), -1)
|
|
|
|
def test_no_args(self):
|
|
self.assertEqual(int(), 0)
|
|
|
|
def test_keyword_args(self):
|
|
# Test invoking int() using keyword arguments.
|
|
self.assertEqual(int(x=1.2), 1)
|
|
self.assertEqual(int('100', base=2), 4)
|
|
self.assertEqual(int(x='100', base=2), 4)
|
|
self.assertRaises(TypeError, int, base=10)
|
|
self.assertRaises(TypeError, int, base=0)
|
|
|
|
def test_int_base_limits(self):
|
|
"""Testing the supported limits of the int() base parameter."""
|
|
self.assertEqual(int('0', 5), 0)
|
|
with self.assertRaises(ValueError):
|
|
int('0', 1)
|
|
with self.assertRaises(ValueError):
|
|
int('0', 37)
|
|
with self.assertRaises(ValueError):
|
|
int('0', -909) # An old magic value base from Python 2.
|
|
with self.assertRaises(ValueError):
|
|
int('0', base=0-(2**234))
|
|
with self.assertRaises(ValueError):
|
|
int('0', base=2**234)
|
|
# Bases 2 through 36 are supported.
|
|
for base in range(2,37):
|
|
self.assertEqual(int('0', base=base), 0)
|
|
|
|
def test_int_base_bad_types(self):
|
|
"""Not integer types are not valid bases; issue16772."""
|
|
with self.assertRaises(TypeError):
|
|
int('0', 5.5)
|
|
with self.assertRaises(TypeError):
|
|
int('0', 5.0)
|
|
|
|
def test_int_base_indexable(self):
|
|
class MyIndexable(object):
|
|
def __init__(self, value):
|
|
self.value = value
|
|
def __index__(self):
|
|
return self.value
|
|
|
|
# Check out of range bases.
|
|
for base in 2**100, -2**100, 1, 37:
|
|
with self.assertRaises(ValueError):
|
|
int('43', base)
|
|
|
|
# Check in-range bases.
|
|
self.assertEqual(int('101', base=MyIndexable(2)), 5)
|
|
self.assertEqual(int('101', base=MyIndexable(10)), 101)
|
|
self.assertEqual(int('101', base=MyIndexable(36)), 1 + 36**2)
|
|
|
|
def test_non_numeric_input_types(self):
|
|
# Test possible non-numeric types for the argument x, including
|
|
# subclasses of the explicitly documented accepted types.
|
|
class CustomStr(str): pass
|
|
class CustomBytes(bytes): pass
|
|
class CustomByteArray(bytearray): pass
|
|
|
|
values = [b'100',
|
|
bytearray(b'100'),
|
|
CustomStr('100'),
|
|
CustomBytes(b'100'),
|
|
CustomByteArray(b'100')]
|
|
|
|
for x in values:
|
|
msg = 'x has type %s' % type(x).__name__
|
|
self.assertEqual(int(x), 100, msg=msg)
|
|
self.assertEqual(int(x, 2), 4, msg=msg)
|
|
|
|
def test_string_float(self):
|
|
self.assertRaises(ValueError, int, '1.2')
|
|
|
|
def test_intconversion(self):
|
|
# Test __int__()
|
|
class ClassicMissingMethods:
|
|
pass
|
|
self.assertRaises(TypeError, int, ClassicMissingMethods())
|
|
|
|
class MissingMethods(object):
|
|
pass
|
|
self.assertRaises(TypeError, int, MissingMethods())
|
|
|
|
class Foo0:
|
|
def __int__(self):
|
|
return 42
|
|
|
|
self.assertEqual(int(Foo0()), 42)
|
|
|
|
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)
|
|
|
|
class ExceptionalTrunc(base):
|
|
def __trunc__(self):
|
|
1 / 0
|
|
with self.assertRaises(ZeroDivisionError):
|
|
int(ExceptionalTrunc())
|
|
|
|
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),))
|
|
|
|
# Regression test for bugs.python.org/issue16060.
|
|
class BadInt(trunc_result_base):
|
|
def __int__(self):
|
|
return 42.0
|
|
|
|
class TruncReturnsBadInt(base):
|
|
def __trunc__(self):
|
|
return BadInt()
|
|
|
|
with self.assertRaises(TypeError):
|
|
int(TruncReturnsBadInt())
|
|
|
|
def test_int_subclass_with_int(self):
|
|
class MyInt(int):
|
|
def __int__(self):
|
|
return 42
|
|
|
|
class BadInt(int):
|
|
def __int__(self):
|
|
return 42.0
|
|
|
|
my_int = MyInt(7)
|
|
self.assertEqual(my_int, 7)
|
|
self.assertEqual(int(my_int), 42)
|
|
|
|
self.assertRaises(TypeError, int, BadInt())
|
|
|
|
def test_int_returns_int_subclass(self):
|
|
class BadInt:
|
|
def __int__(self):
|
|
return True
|
|
|
|
class BadInt2(int):
|
|
def __int__(self):
|
|
return True
|
|
|
|
class TruncReturnsBadInt:
|
|
def __trunc__(self):
|
|
return BadInt()
|
|
|
|
class TruncReturnsIntSubclass:
|
|
def __trunc__(self):
|
|
return True
|
|
|
|
bad_int = BadInt()
|
|
with self.assertWarns(DeprecationWarning):
|
|
n = int(bad_int)
|
|
self.assertEqual(n, 1)
|
|
|
|
bad_int = BadInt2()
|
|
with self.assertWarns(DeprecationWarning):
|
|
n = int(bad_int)
|
|
self.assertEqual(n, 1)
|
|
|
|
bad_int = TruncReturnsBadInt()
|
|
with self.assertWarns(DeprecationWarning):
|
|
n = int(bad_int)
|
|
self.assertEqual(n, 1)
|
|
|
|
good_int = TruncReturnsIntSubclass()
|
|
n = int(good_int)
|
|
self.assertEqual(n, 1)
|
|
|
|
def test_error_message(self):
|
|
def check(s, base=None):
|
|
with self.assertRaises(ValueError,
|
|
msg="int(%r, %r)" % (s, base)) as cm:
|
|
if base is None:
|
|
int(s)
|
|
else:
|
|
int(s, base)
|
|
self.assertEqual(cm.exception.args[0],
|
|
"invalid literal for int() with base %d: %r" %
|
|
(10 if base is None else base, s))
|
|
|
|
check('\xbd')
|
|
check('123\xbd')
|
|
check(' 123 456 ')
|
|
|
|
check('123\x00')
|
|
# SF bug 1545497: embedded NULs were not detected with explicit base
|
|
check('123\x00', 10)
|
|
check('123\x00 245', 20)
|
|
check('123\x00 245', 16)
|
|
check('123\x00245', 20)
|
|
check('123\x00245', 16)
|
|
# byte string with embedded NUL
|
|
check(b'123\x00')
|
|
check(b'123\x00', 10)
|
|
# non-UTF-8 byte string
|
|
check(b'123\xbd')
|
|
check(b'123\xbd', 10)
|
|
# lone surrogate in Unicode string
|
|
check('123\ud800')
|
|
check('123\ud800', 10)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|