/usr/lib/python2.7/test/test_str.py is in libpython2.7-testsuite 2.7.6-8ubuntu0.5.
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 | import unittest
import struct
import sys
from test import test_support, string_tests
class StrTest(
string_tests.CommonTest,
string_tests.MixinStrUnicodeUserStringTest,
string_tests.MixinStrUserStringTest,
string_tests.MixinStrUnicodeTest,
):
type2test = str
# We don't need to propagate to str
def fixtype(self, obj):
return obj
def test_basic_creation(self):
self.assertEqual(str(''), '')
self.assertEqual(str(0), '0')
self.assertEqual(str(0L), '0')
self.assertEqual(str(()), '()')
self.assertEqual(str([]), '[]')
self.assertEqual(str({}), '{}')
a = []
a.append(a)
self.assertEqual(str(a), '[[...]]')
a = {}
a[0] = a
self.assertEqual(str(a), '{0: {...}}')
def test_formatting(self):
string_tests.MixinStrUnicodeUserStringTest.test_formatting(self)
self.assertRaises(OverflowError, '%c'.__mod__, 0x1234)
@test_support.cpython_only
def test_formatting_huge_precision(self):
from _testcapi import INT_MAX
format_string = "%.{}f".format(INT_MAX + 1)
with self.assertRaises(ValueError):
result = format_string % 2.34
def test_formatting_huge_width(self):
format_string = "%{}f".format(sys.maxsize + 1)
with self.assertRaises(ValueError):
result = format_string % 2.34
def test_conversion(self):
# Make sure __str__() behaves properly
class Foo0:
def __unicode__(self):
return u"foo"
class Foo1:
def __str__(self):
return "foo"
class Foo2(object):
def __str__(self):
return "foo"
class Foo3(object):
def __str__(self):
return u"foo"
class Foo4(unicode):
def __str__(self):
return u"foo"
class Foo5(str):
def __str__(self):
return u"foo"
class Foo6(str):
def __str__(self):
return "foos"
def __unicode__(self):
return u"foou"
class Foo7(unicode):
def __str__(self):
return "foos"
def __unicode__(self):
return u"foou"
class Foo8(str):
def __new__(cls, content=""):
return str.__new__(cls, 2*content)
def __str__(self):
return self
class Foo9(str):
def __str__(self):
return "string"
def __unicode__(self):
return "not unicode"
self.assertTrue(str(Foo0()).startswith("<")) # this is different from __unicode__
self.assertEqual(str(Foo1()), "foo")
self.assertEqual(str(Foo2()), "foo")
self.assertEqual(str(Foo3()), "foo")
self.assertEqual(str(Foo4("bar")), "foo")
self.assertEqual(str(Foo5("bar")), "foo")
self.assertEqual(str(Foo6("bar")), "foos")
self.assertEqual(str(Foo7("bar")), "foos")
self.assertEqual(str(Foo8("foo")), "foofoo")
self.assertEqual(str(Foo9("foo")), "string")
self.assertEqual(unicode(Foo9("foo")), u"not unicode")
# This test only affects 32-bit platforms because expandtabs can only take
# an int as the max value, not a 64-bit C long. If expandtabs is changed
# to take a 64-bit long, this test should apply to all platforms.
@unittest.skipIf(sys.maxint > (1 << 32) or struct.calcsize('P') != 4,
'only applies to 32-bit platforms')
def test_expandtabs_overflows_gracefully(self):
self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxint)
def test__format__(self):
def test(value, format, expected):
# test both with and without the trailing 's'
self.assertEqual(value.__format__(format), expected)
self.assertEqual(value.__format__(format + 's'), expected)
test('', '', '')
test('abc', '', 'abc')
test('abc', '.3', 'abc')
test('ab', '.3', 'ab')
test('abcdef', '.3', 'abc')
test('abcdef', '.0', '')
test('abc', '3.3', 'abc')
test('abc', '2.3', 'abc')
test('abc', '2.2', 'ab')
test('abc', '3.2', 'ab ')
test('result', 'x<0', 'result')
test('result', 'x<5', 'result')
test('result', 'x<6', 'result')
test('result', 'x<7', 'resultx')
test('result', 'x<8', 'resultxx')
test('result', ' <7', 'result ')
test('result', '<7', 'result ')
test('result', '>7', ' result')
test('result', '>8', ' result')
test('result', '^8', ' result ')
test('result', '^9', ' result ')
test('result', '^10', ' result ')
test('a', '10000', 'a' + ' ' * 9999)
test('', '10000', ' ' * 10000)
test('', '10000000', ' ' * 10000000)
def test_format(self):
self.assertEqual(''.format(), '')
self.assertEqual('a'.format(), 'a')
self.assertEqual('ab'.format(), 'ab')
self.assertEqual('a{{'.format(), 'a{')
self.assertEqual('a}}'.format(), 'a}')
self.assertEqual('{{b'.format(), '{b')
self.assertEqual('}}b'.format(), '}b')
self.assertEqual('a{{b'.format(), 'a{b')
# examples from the PEP:
import datetime
self.assertEqual("My name is {0}".format('Fred'), "My name is Fred")
self.assertEqual("My name is {0[name]}".format(dict(name='Fred')),
"My name is Fred")
self.assertEqual("My name is {0} :-{{}}".format('Fred'),
"My name is Fred :-{}")
d = datetime.date(2007, 8, 18)
self.assertEqual("The year is {0.year}".format(d),
"The year is 2007")
# classes we'll use for testing
class C:
def __init__(self, x=100):
self._x = x
def __format__(self, spec):
return spec
class D:
def __init__(self, x):
self.x = x
def __format__(self, spec):
return str(self.x)
# class with __str__, but no __format__
class E:
def __init__(self, x):
self.x = x
def __str__(self):
return 'E(' + self.x + ')'
# class with __repr__, but no __format__ or __str__
class F:
def __init__(self, x):
self.x = x
def __repr__(self):
return 'F(' + self.x + ')'
# class with __format__ that forwards to string, for some format_spec's
class G:
def __init__(self, x):
self.x = x
def __str__(self):
return "string is " + self.x
def __format__(self, format_spec):
if format_spec == 'd':
return 'G(' + self.x + ')'
return object.__format__(self, format_spec)
# class that returns a bad type from __format__
class H:
def __format__(self, format_spec):
return 1.0
class I(datetime.date):
def __format__(self, format_spec):
return self.strftime(format_spec)
class J(int):
def __format__(self, format_spec):
return int.__format__(self * 2, format_spec)
self.assertEqual(''.format(), '')
self.assertEqual('abc'.format(), 'abc')
self.assertEqual('{0}'.format('abc'), 'abc')
self.assertEqual('{0:}'.format('abc'), 'abc')
self.assertEqual('X{0}'.format('abc'), 'Xabc')
self.assertEqual('{0}X'.format('abc'), 'abcX')
self.assertEqual('X{0}Y'.format('abc'), 'XabcY')
self.assertEqual('{1}'.format(1, 'abc'), 'abc')
self.assertEqual('X{1}'.format(1, 'abc'), 'Xabc')
self.assertEqual('{1}X'.format(1, 'abc'), 'abcX')
self.assertEqual('X{1}Y'.format(1, 'abc'), 'XabcY')
self.assertEqual('{0}'.format(-15), '-15')
self.assertEqual('{0}{1}'.format(-15, 'abc'), '-15abc')
self.assertEqual('{0}X{1}'.format(-15, 'abc'), '-15Xabc')
self.assertEqual('{{'.format(), '{')
self.assertEqual('}}'.format(), '}')
self.assertEqual('{{}}'.format(), '{}')
self.assertEqual('{{x}}'.format(), '{x}')
self.assertEqual('{{{0}}}'.format(123), '{123}')
self.assertEqual('{{{{0}}}}'.format(), '{{0}}')
self.assertEqual('}}{{'.format(), '}{')
self.assertEqual('}}x{{'.format(), '}x{')
# weird field names
self.assertEqual("{0[foo-bar]}".format({'foo-bar':'baz'}), 'baz')
self.assertEqual("{0[foo bar]}".format({'foo bar':'baz'}), 'baz')
self.assertEqual("{0[ ]}".format({' ':3}), '3')
self.assertEqual('{foo._x}'.format(foo=C(20)), '20')
self.assertEqual('{1}{0}'.format(D(10), D(20)), '2010')
self.assertEqual('{0._x.x}'.format(C(D('abc'))), 'abc')
self.assertEqual('{0[0]}'.format(['abc', 'def']), 'abc')
self.assertEqual('{0[1]}'.format(['abc', 'def']), 'def')
self.assertEqual('{0[1][0]}'.format(['abc', ['def']]), 'def')
self.assertEqual('{0[1][0].x}'.format(['abc', [D('def')]]), 'def')
# strings
self.assertEqual('{0:.3s}'.format('abc'), 'abc')
self.assertEqual('{0:.3s}'.format('ab'), 'ab')
self.assertEqual('{0:.3s}'.format('abcdef'), 'abc')
self.assertEqual('{0:.0s}'.format('abcdef'), '')
self.assertEqual('{0:3.3s}'.format('abc'), 'abc')
self.assertEqual('{0:2.3s}'.format('abc'), 'abc')
self.assertEqual('{0:2.2s}'.format('abc'), 'ab')
self.assertEqual('{0:3.2s}'.format('abc'), 'ab ')
self.assertEqual('{0:x<0s}'.format('result'), 'result')
self.assertEqual('{0:x<5s}'.format('result'), 'result')
self.assertEqual('{0:x<6s}'.format('result'), 'result')
self.assertEqual('{0:x<7s}'.format('result'), 'resultx')
self.assertEqual('{0:x<8s}'.format('result'), 'resultxx')
self.assertEqual('{0: <7s}'.format('result'), 'result ')
self.assertEqual('{0:<7s}'.format('result'), 'result ')
self.assertEqual('{0:>7s}'.format('result'), ' result')
self.assertEqual('{0:>8s}'.format('result'), ' result')
self.assertEqual('{0:^8s}'.format('result'), ' result ')
self.assertEqual('{0:^9s}'.format('result'), ' result ')
self.assertEqual('{0:^10s}'.format('result'), ' result ')
self.assertEqual('{0:10000}'.format('a'), 'a' + ' ' * 9999)
self.assertEqual('{0:10000}'.format(''), ' ' * 10000)
self.assertEqual('{0:10000000}'.format(''), ' ' * 10000000)
# format specifiers for user defined type
self.assertEqual('{0:abc}'.format(C()), 'abc')
# !r and !s coercions
self.assertEqual('{0!s}'.format('Hello'), 'Hello')
self.assertEqual('{0!s:}'.format('Hello'), 'Hello')
self.assertEqual('{0!s:15}'.format('Hello'), 'Hello ')
self.assertEqual('{0!s:15s}'.format('Hello'), 'Hello ')
self.assertEqual('{0!r}'.format('Hello'), "'Hello'")
self.assertEqual('{0!r:}'.format('Hello'), "'Hello'")
self.assertEqual('{0!r}'.format(F('Hello')), 'F(Hello)')
# test fallback to object.__format__
self.assertEqual('{0}'.format({}), '{}')
self.assertEqual('{0}'.format([]), '[]')
self.assertEqual('{0}'.format([1]), '[1]')
self.assertEqual('{0}'.format(E('data')), 'E(data)')
self.assertEqual('{0:d}'.format(G('data')), 'G(data)')
self.assertEqual('{0!s}'.format(G('data')), 'string is data')
msg = 'object.__format__ with a non-empty format string is deprecated'
with test_support.check_warnings((msg, PendingDeprecationWarning)):
self.assertEqual('{0:^10}'.format(E('data')), ' E(data) ')
self.assertEqual('{0:^10s}'.format(E('data')), ' E(data) ')
self.assertEqual('{0:>15s}'.format(G('data')), ' string is data')
self.assertEqual("{0:date: %Y-%m-%d}".format(I(year=2007,
month=8,
day=27)),
"date: 2007-08-27")
# test deriving from a builtin type and overriding __format__
self.assertEqual("{0}".format(J(10)), "20")
# string format specifiers
self.assertEqual('{0:}'.format('a'), 'a')
# computed format specifiers
self.assertEqual("{0:.{1}}".format('hello world', 5), 'hello')
self.assertEqual("{0:.{1}s}".format('hello world', 5), 'hello')
self.assertEqual("{0:.{precision}s}".format('hello world', precision=5), 'hello')
self.assertEqual("{0:{width}.{precision}s}".format('hello world', width=10, precision=5), 'hello ')
self.assertEqual("{0:{width}.{precision}s}".format('hello world', width='10', precision='5'), 'hello ')
# test various errors
self.assertRaises(ValueError, '{'.format)
self.assertRaises(ValueError, '}'.format)
self.assertRaises(ValueError, 'a{'.format)
self.assertRaises(ValueError, 'a}'.format)
self.assertRaises(ValueError, '{a'.format)
self.assertRaises(ValueError, '}a'.format)
self.assertRaises(IndexError, '{0}'.format)
self.assertRaises(IndexError, '{1}'.format, 'abc')
self.assertRaises(KeyError, '{x}'.format)
self.assertRaises(ValueError, "}{".format)
self.assertRaises(ValueError, "{".format)
self.assertRaises(ValueError, "}".format)
self.assertRaises(ValueError, "abc{0:{}".format)
self.assertRaises(ValueError, "{0".format)
self.assertRaises(IndexError, "{0.}".format)
self.assertRaises(ValueError, "{0.}".format, 0)
self.assertRaises(IndexError, "{0[}".format)
self.assertRaises(ValueError, "{0[}".format, [])
self.assertRaises(KeyError, "{0]}".format)
self.assertRaises(ValueError, "{0.[]}".format, 0)
self.assertRaises(ValueError, "{0..foo}".format, 0)
self.assertRaises(ValueError, "{0[0}".format, 0)
self.assertRaises(ValueError, "{0[0:foo}".format, 0)
self.assertRaises(KeyError, "{c]}".format)
self.assertRaises(ValueError, "{{ {{{0}}".format, 0)
self.assertRaises(ValueError, "{0}}".format, 0)
self.assertRaises(KeyError, "{foo}".format, bar=3)
self.assertRaises(ValueError, "{0!x}".format, 3)
self.assertRaises(ValueError, "{0!}".format, 0)
self.assertRaises(ValueError, "{0!rs}".format, 0)
self.assertRaises(ValueError, "{!}".format)
self.assertRaises(IndexError, "{:}".format)
self.assertRaises(IndexError, "{:s}".format)
self.assertRaises(IndexError, "{}".format)
# issue 6089
self.assertRaises(ValueError, "{0[0]x}".format, [None])
self.assertRaises(ValueError, "{0[0](10)}".format, [None])
# can't have a replacement on the field name portion
self.assertRaises(TypeError, '{0[{1}]}'.format, 'abcdefg', 4)
# exceed maximum recursion depth
self.assertRaises(ValueError, "{0:{1:{2}}}".format, 'abc', 's', '')
self.assertRaises(ValueError, "{0:{1:{2:{3:{4:{5:{6}}}}}}}".format,
0, 1, 2, 3, 4, 5, 6, 7)
# string format spec errors
self.assertRaises(ValueError, "{0:-s}".format, '')
self.assertRaises(ValueError, format, "", "-")
self.assertRaises(ValueError, "{0:=s}".format, '')
def test_format_huge_precision(self):
format_string = ".{}f".format(sys.maxsize + 1)
with self.assertRaises(ValueError):
result = format(2.34, format_string)
def test_format_huge_width(self):
format_string = "{}f".format(sys.maxsize + 1)
with self.assertRaises(ValueError):
result = format(2.34, format_string)
def test_format_huge_item_number(self):
format_string = "{{{}:.6f}}".format(sys.maxsize + 1)
with self.assertRaises(ValueError):
result = format_string.format(2.34)
def test_format_auto_numbering(self):
class C:
def __init__(self, x=100):
self._x = x
def __format__(self, spec):
return spec
self.assertEqual('{}'.format(10), '10')
self.assertEqual('{:5}'.format('s'), 's ')
self.assertEqual('{!r}'.format('s'), "'s'")
self.assertEqual('{._x}'.format(C(10)), '10')
self.assertEqual('{[1]}'.format([1, 2]), '2')
self.assertEqual('{[a]}'.format({'a':4, 'b':2}), '4')
self.assertEqual('a{}b{}c'.format(0, 1), 'a0b1c')
self.assertEqual('a{:{}}b'.format('x', '^10'), 'a x b')
self.assertEqual('a{:{}x}b'.format(20, '#'), 'a0x14b')
# can't mix and match numbering and auto-numbering
self.assertRaises(ValueError, '{}{1}'.format, 1, 2)
self.assertRaises(ValueError, '{1}{}'.format, 1, 2)
self.assertRaises(ValueError, '{:{1}}'.format, 1, 2)
self.assertRaises(ValueError, '{0:{}}'.format, 1, 2)
# can mix and match auto-numbering and named
self.assertEqual('{f}{}'.format(4, f='test'), 'test4')
self.assertEqual('{}{f}'.format(4, f='test'), '4test')
self.assertEqual('{:{f}}{g}{}'.format(1, 3, g='g', f=2), ' 1g3')
self.assertEqual('{f:{}}{}{g}'.format(2, 4, f=1, g='g'), ' 14g')
def test_buffer_is_readonly(self):
self.assertRaises(TypeError, sys.stdin.readinto, b"")
def test_encode_and_decode_kwargs(self):
self.assertEqual('abcde'.encode('ascii', 'replace'),
'abcde'.encode('ascii', errors='replace'))
self.assertEqual('abcde'.encode('ascii', 'ignore'),
'abcde'.encode(encoding='ascii', errors='ignore'))
self.assertEqual('Andr\202 x'.decode('ascii', 'ignore'),
'Andr\202 x'.decode('ascii', errors='ignore'))
self.assertEqual('Andr\202 x'.decode('ascii', 'replace'),
'Andr\202 x'.decode(encoding='ascii', errors='replace'))
def test_startswith_endswith_errors(self):
with self.assertRaises(UnicodeDecodeError):
'\xff'.startswith(u'x')
with self.assertRaises(UnicodeDecodeError):
'\xff'.endswith(u'x')
for meth in ('foo'.startswith, 'foo'.endswith):
with self.assertRaises(TypeError) as cm:
meth(['f'])
exc = str(cm.exception)
self.assertIn('unicode', exc)
self.assertIn('str', exc)
self.assertIn('tuple', exc)
def test_main():
test_support.run_unittest(StrTest)
if __name__ == "__main__":
test_main()
|