/usr/lib/python2.7/test/test_int.py is in libpython2.7-testsuite 2.7.11-7ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 | import sys
import unittest
from test import test_support
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 IntSubclass(int):
pass
class IntLongCommonTests(object):
"""Mixin of test cases to share between both test_int and test_long."""
# Change to int or long in the TestCase subclass.
ntype = None
def test_no_args(self):
self.assertEqual(self.ntype(), 0)
def test_keyword_args(self):
# Test invoking constructor using keyword arguments.
self.assertEqual(self.ntype(x=1.2), 1)
self.assertEqual(self.ntype('100', base=2), 4)
self.assertEqual(self.ntype(x='100', base=2), 4)
self.assertRaises(TypeError, self.ntype, base=10)
self.assertRaises(TypeError, self.ntype, base=0)
class IntTestCases(IntLongCommonTests, unittest.TestCase):
ntype = int
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_valid_non_numeric_input_types_for_x(self):
# Test possible valid non-numeric types for x, including subclasses
# of the allowed built-in types.
class CustomStr(str): pass
class CustomByteArray(bytearray): pass
factories = [str, bytearray, CustomStr, CustomByteArray, buffer]
if have_unicode:
class CustomUnicode(unicode): pass
factories += [unicode, CustomUnicode]
for f in factories:
with test_support.check_py3k_warnings(quiet=True):
x = f('100')
msg = 'x has value %s and type %s' % (x, type(x).__name__)
try:
self.assertEqual(int(x), 100, msg=msg)
if isinstance(x, basestring):
self.assertEqual(int(x, 2), 4, msg=msg)
except TypeError, err:
raise AssertionError('For %s got TypeError: %s' %
(type(x).__name__, err))
if not isinstance(x, basestring):
errmsg = "can't convert non-string"
with self.assertRaisesRegexp(TypeError, errmsg, msg=msg):
int(x, 2)
errmsg = 'invalid literal'
with self.assertRaisesRegexp(ValueError, errmsg, msg=msg), \
test_support.check_py3k_warnings(quiet=True):
int(f('A' * 0x10))
def test_int_buffer(self):
with test_support.check_py3k_warnings():
self.assertEqual(int(buffer('123', 1, 2)), 23)
self.assertEqual(int(buffer('123\x00', 1, 2)), 23)
self.assertEqual(int(buffer('123 ', 1, 2)), 23)
self.assertEqual(int(buffer('123A', 1, 2)), 23)
self.assertEqual(int(buffer('1234', 1, 2)), 23)
def test_error_on_string_float_for_x(self):
self.assertRaises(ValueError, int, '1.2')
def test_error_on_bytearray_for_x(self):
self.assertRaises(TypeError, int, bytearray('100'), 2)
def test_error_on_invalid_int_bases(self):
for base in [-1, 1, 1000]:
self.assertRaises(ValueError, int, '100', base)
def test_error_on_string_base(self):
self.assertRaises(TypeError, int, 100, base='foo')
@test_support.cpython_only
def test_small_ints(self):
self.assertIs(int('10'), 10)
self.assertIs(int('-1'), -1)
if have_unicode:
self.assertIs(int(u'10'), 10)
self.assertIs(int(u'-1'), -1)
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),))
class TruncReturnsIntSubclass(base):
def __trunc__(self):
return True
good_int = TruncReturnsIntSubclass()
n = int(good_int)
self.assertEqual(n, 1)
self.assertIs(type(n), bool)
n = IntSubclass(good_int)
self.assertEqual(n, 1)
self.assertIs(type(n), IntSubclass)
def test_main():
run_unittest(IntTestCases)
if __name__ == "__main__":
test_main()
|